1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 2 "http://www.w3.org/TR/html4/loose.dtd"> 3 <html> 4 <head> 5 <title>The XML C parser and toolkit of Gnome</title> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> 7 </head> 8 <body bgcolor="#ffffff"> 9 <h1 align="center">The XML C parser and toolkit of Gnome</h1> 10 11 <h1>Note: this is the flat content of the <a href="index.html">web 12 site</a></h1> 13 14 <h1 style="text-align: center">libxml, a.k.a. gnome-xml</h1> 15 16 <p></p> 17 18 <p 19 style="text-align: right; font-style: italic; font-size: 10pt">"Programming 20 with libxml2 is like the thrilling embrace of an exotic stranger." <a 21 href="http://diveintomark.org/archives/2004/02/18/libxml2">Mark 22 Pilgrim</a></p> 23 24 <p>Libxml2 is the XML C parser and toolkit developed for the Gnome project 25 (but usable outside of the Gnome platform), it is free software available 26 under the <a href="http://www.opensource.org/licenses/mit-license.html">MIT 27 License</a>. XML itself is a metalanguage to design markup languages, i.e. 28 text language where semantic and structure are added to the content using 29 extra "markup" information enclosed between angle brackets. HTML is the most 30 well-known markup language. Though the library is written in C <a 31 href="python.html">a variety of language bindings</a> make it available in 32 other environments.</p> 33 34 <p>Libxml2 is known to be very portable, the library should build and work 35 without serious troubles on a variety of systems (Linux, Unix, Windows, 36 CygWin, MacOS, MacOS X, RISC Os, OS/2, VMS, QNX, MVS, VxWorks, ...)</p> 37 38 <p>Libxml2 implements a number of existing standards related to markup 39 languages:</p> 40 <ul> 41 <li>the XML standard: <a 42 href="http://www.w3.org/TR/REC-xml">http://www.w3.org/TR/REC-xml</a></li> 43 <li>Namespaces in XML: <a 44 href="http://www.w3.org/TR/REC-xml-names/">http://www.w3.org/TR/REC-xml-names/</a></li> 45 <li>XML Base: <a 46 href="http://www.w3.org/TR/xmlbase/">http://www.w3.org/TR/xmlbase/</a></li> 47 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc2396.txt">RFC 2396</a> : 48 Uniform Resource Identifiers <a 49 href="http://www.ietf.org/rfc/rfc2396.txt">http://www.ietf.org/rfc/rfc2396.txt</a></li> 50 <li>XML Path Language (XPath) 1.0: <a 51 href="http://www.w3.org/TR/xpath">http://www.w3.org/TR/xpath</a></li> 52 <li>HTML4 parser: <a 53 href="http://www.w3.org/TR/html401/">http://www.w3.org/TR/html401/</a></li> 54 <li>XML Pointer Language (XPointer) Version 1.0: <a 55 href="http://www.w3.org/TR/xptr">http://www.w3.org/TR/xptr</a></li> 56 <li>XML Inclusions (XInclude) Version 1.0: <a 57 href="http://www.w3.org/TR/xinclude/">http://www.w3.org/TR/xinclude/</a></li> 58 <li>ISO-8859-x encodings, as well as <a 59 href="http://www.cis.ohio-state.edu/rfc/rfc2044.txt">rfc2044</a> [UTF-8] 60 and <a href="http://www.cis.ohio-state.edu/rfc/rfc2781.txt">rfc2781</a> 61 [UTF-16] Unicode encodings, and more if using iconv support</li> 62 <li>part of SGML Open Technical Resolution TR9401:1997</li> 63 <li>XML Catalogs Working Draft 06 August 2001: <a 64 href="http://www.oasis-open.org/committees/entity/spec-2001-08-06.html">http://www.oasis-open.org/committees/entity/spec-2001-08-06.html</a></li> 65 <li>Canonical XML Version 1.0: <a 66 href="http://www.w3.org/TR/xml-c14n">http://www.w3.org/TR/xml-c14n</a> 67 and the Exclusive XML Canonicalization CR draft <a 68 href="http://www.w3.org/TR/xml-exc-c14n">http://www.w3.org/TR/xml-exc-c14n</a></li> 69 <li>Relax NG, ISO/IEC 19757-2:2003, <a 70 href="http://www.oasis-open.org/committees/relax-ng/spec-20011203.html">http://www.oasis-open.org/committees/relax-ng/spec-20011203.html</a></li> 71 <li>W3C XML Schemas Part 2: Datatypes <a 72 href="http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/">REC 02 May 73 2001</a></li> 74 <li>W3C <a href="http://www.w3.org/TR/xml-id/">xml:id</a> Working Draft 7 75 April 2004</li> 76 </ul> 77 78 <p>In most cases libxml2 tries to implement the specifications in a 79 relatively strictly compliant way. As of release 2.4.16, libxml2 passed all 80 1800+ tests from the <a 81 href="http://www.oasis-open.org/committees/xml-conformance/">OASIS XML Tests 82 Suite</a>.</p> 83 84 <p>To some extent libxml2 provides support for the following additional 85 specifications but doesn't claim to implement them completely:</p> 86 <ul> 87 <li>Document Object Model (DOM) <a 88 href="http://www.w3.org/TR/DOM-Level-2-Core/">http://www.w3.org/TR/DOM-Level-2-Core/</a> 89 the document model, but it doesn't implement the API itself, gdome2 does 90 this on top of libxml2</li> 91 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc959.txt">RFC 959</a> : 92 libxml2 implements a basic FTP client code</li> 93 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc1945.txt">RFC 1945</a> : 94 HTTP/1.0, again a basic HTTP client code</li> 95 <li>SAX: a SAX2 like interface and a minimal SAX1 implementation compatible 96 with early expat versions</li> 97 </ul> 98 99 <p>A partial implementation of <a 100 href="http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/">XML Schemas Part 101 1: Structure</a> is being worked on but it would be far too early to make any 102 conformance statement about it at the moment.</p> 103 104 <p>Separate documents:</p> 105 <ul> 106 <li><a href="http://xmlsoft.org/XSLT/">the libxslt page</a> providing an 107 implementation of XSLT 1.0 and common extensions like EXSLT for 108 libxml2</li> 109 <li><a href="http://gdome2.cs.unibo.it/">the gdome2 page</a> 110 : a standard DOM2 implementation for libxml2</li> 111 <li><a href="http://www.aleksey.com/xmlsec/">the XMLSec page</a>: an 112 implementation of <a href="http://www.w3.org/TR/xmldsig-core/">W3C XML 113 Digital Signature</a> for libxml2</li> 114 <li>also check the related links section for more related and active 115 projects.</li> 116 </ul> 117 <p> Hosting sponsored by <a href="http://www.aoemedia.de/opensource-cms.html" 118 >Open Source CMS services</a> from AOE media.</p> 119 120 <p>Logo designed by <a href="mailto:liyanage (a] access.ch">Marc Liyanage</a>.</p> 121 122 <h2><a name="Introducti">Introduction</a></h2> 123 124 <p>This document describes libxml, the <a 125 href="http://www.w3.org/XML/">XML</a> C parser and toolkit developed for the 126 <a href="http://www.gnome.org/">Gnome</a> project. <a 127 href="http://www.w3.org/XML/">XML is a standard</a> for building tag-based 128 structured documents/data.</p> 129 130 <p>Here are some key points about libxml:</p> 131 <ul> 132 <li>Libxml2 exports Push (progressive) and Pull (blocking) type parser 133 interfaces for both XML and HTML.</li> 134 <li>Libxml2 can do DTD validation at parse time, using a parsed document 135 instance, or with an arbitrary DTD.</li> 136 <li>Libxml2 includes complete <a 137 href="http://www.w3.org/TR/xpath">XPath</a>, <a 138 href="http://www.w3.org/TR/xptr">XPointer</a> and <a 139 href="http://www.w3.org/TR/xinclude">XInclude</a> implementations.</li> 140 <li>It is written in plain C, making as few assumptions as possible, and 141 sticking closely to ANSI C/POSIX for easy embedding. Works on 142 Linux/Unix/Windows, ported to a number of other platforms.</li> 143 <li>Basic support for HTTP and FTP client allowing applications to fetch 144 remote resources.</li> 145 <li>The design is modular, most of the extensions can be compiled out.</li> 146 <li>The internal document representation is as close as possible to the <a 147 href="http://www.w3.org/DOM/">DOM</a> interfaces.</li> 148 <li>Libxml2 also has a <a 149 href="http://www.megginson.com/SAX/index.html">SAX like interface</a>; 150 the interface is designed to be compatible with <a 151 href="http://www.jclark.com/xml/expat.html">Expat</a>.</li> 152 <li>This library is released under the <a 153 href="http://www.opensource.org/licenses/mit-license.html">MIT 154 License</a>. See the Copyright file in the distribution for the precise 155 wording.</li> 156 </ul> 157 158 <p>Warning: unless you are forced to because your application links with a 159 Gnome-1.X library requiring it, <strong><span 160 style="background-color: #FF0000">Do Not Use libxml1</span></strong>, use 161 libxml2</p> 162 163 <h2><a name="FAQ">FAQ</a></h2> 164 165 <p>Table of Contents:</p> 166 <ul> 167 <li><a href="FAQ.html#License">License(s)</a></li> 168 <li><a href="FAQ.html#Installati">Installation</a></li> 169 <li><a href="FAQ.html#Compilatio">Compilation</a></li> 170 <li><a href="FAQ.html#Developer">Developer corner</a></li> 171 </ul> 172 173 <h3><a name="License">License</a>(s)</h3> 174 <ol> 175 <li><em>Licensing Terms for libxml</em> 176 <p>libxml2 is released under the <a 177 href="http://www.opensource.org/licenses/mit-license.html">MIT 178 License</a>; see the file Copyright in the distribution for the precise 179 wording</p> 180 </li> 181 <li><em>Can I embed libxml2 in a proprietary application ?</em> 182 <p>Yes. The MIT License allows you to keep proprietary the changes you 183 made to libxml, but it would be graceful to send-back bug fixes and 184 improvements as patches for possible incorporation in the main 185 development tree.</p> 186 </li> 187 </ol> 188 189 <h3><a name="Installati">Installation</a></h3> 190 <ol> 191 <li><strong><span style="background-color: #FF0000">Do Not Use 192 libxml1</span></strong>, use libxml2</li> 193 <p></p> 194 <li><em>Where can I get libxml</em> ? 195 <p>The original distribution comes from <a 196 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> or <a 197 href="ftp://ftp.gnome.org/pub/GNOME/sources/libxml2/2.6/">gnome.org</a></p> 198 <p>Most Linux and BSD distributions include libxml, this is probably the 199 safer way for end-users to use libxml.</p> 200 <p>David Doolin provides precompiled Windows versions at <a 201 href="http://www.ce.berkeley.edu/~doolin/code/libxmlwin32/ ">http://www.ce.berkeley.edu/~doolin/code/libxmlwin32/</a></p> 202 </li> 203 <p></p> 204 <li><em>I see libxml and libxml2 releases, which one should I install ?</em> 205 <ul> 206 <li>If you are not constrained by backward compatibility issues with 207 existing applications, install libxml2 only</li> 208 <li>If you are not doing development, you can safely install both. 209 Usually the packages <a 210 href="http://rpmfind.net/linux/RPM/libxml.html">libxml</a> and <a 211 href="http://rpmfind.net/linux/RPM/libxml2.html">libxml2</a> are 212 compatible (this is not the case for development packages).</li> 213 <li>If you are a developer and your system provides separate packaging 214 for shared libraries and the development components, it is possible 215 to install libxml and libxml2, and also <a 216 href="http://rpmfind.net/linux/RPM/libxml-devel.html">libxml-devel</a> 217 and <a 218 href="http://rpmfind.net/linux/RPM/libxml2-devel.html">libxml2-devel</a> 219 too for libxml2 >= 2.3.0</li> 220 <li>If you are developing a new application, please develop against 221 libxml2(-devel)</li> 222 </ul> 223 </li> 224 <li><em>I can't install the libxml package, it conflicts with libxml0</em> 225 <p>You probably have an old libxml0 package used to provide the shared 226 library for libxml.so.0, you can probably safely remove it. The libxml 227 packages provided on <a 228 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> provide 229 libxml.so.0</p> 230 </li> 231 <li><em>I can't install the libxml(2) RPM package due to failed 232 dependencies</em> 233 <p>The most generic solution is to re-fetch the latest src.rpm , and 234 rebuild it locally with</p> 235 <p><code>rpm --rebuild libxml(2)-xxx.src.rpm</code>.</p> 236 <p>If everything goes well it will generate two binary rpm packages (one 237 providing the shared libs and xmllint, and the other one, the -devel 238 package, providing includes, static libraries and scripts needed to build 239 applications with libxml(2)) that you can install locally.</p> 240 </li> 241 </ol> 242 243 <h3><a name="Compilatio">Compilation</a></h3> 244 <ol> 245 <li><em>What is the process to compile libxml2 ?</em> 246 <p>As most UNIX libraries libxml2 follows the "standard":</p> 247 <p><code>gunzip -c xxx.tar.gz | tar xvf -</code></p> 248 <p><code>cd libxml-xxxx</code></p> 249 <p><code>./configure --help</code></p> 250 <p>to see the options, then the compilation/installation proper</p> 251 <p><code>./configure [possible options]</code></p> 252 <p><code>make</code></p> 253 <p><code>make install</code></p> 254 <p>At that point you may have to rerun ldconfig or a similar utility to 255 update your list of installed shared libs.</p> 256 </li> 257 <li><em>What other libraries are needed to compile/install libxml2 ?</em> 258 <p>Libxml2 does not require any other library, the normal C ANSI API 259 should be sufficient (please report any violation to this rule you may 260 find).</p> 261 <p>However if found at configuration time libxml2 will detect and use the 262 following libs:</p> 263 <ul> 264 <li><a href="http://www.info-zip.org/pub/infozip/zlib/">libz</a> : a 265 highly portable and available widely compression library.</li> 266 <li>iconv: a powerful character encoding conversion library. It is 267 included by default in recent glibc libraries, so it doesn't need to 268 be installed specifically on Linux. It now seems a <a 269 href="http://www.opennc.org/onlinepubs/7908799/xsh/iconv.html">part 270 of the official UNIX</a> specification. Here is one <a 271 href="http://www.gnu.org/software/libiconv/">implementation of the 272 library</a> which source can be found <a 273 href="ftp://ftp.ilog.fr/pub/Users/haible/gnu/">here</a>.</li> 274 </ul> 275 </li> 276 <p></p> 277 <li><em>Make check fails on some platforms</em> 278 <p>Sometimes the regression tests' results don't completely match the 279 value produced by the parser, and the makefile uses diff to print the 280 delta. On some platforms the diff return breaks the compilation process; 281 if the diff is small this is probably not a serious problem.</p> 282 <p>Sometimes (especially on Solaris) make checks fail due to limitations 283 in make. Try using GNU-make instead.</p> 284 </li> 285 <li><em>I use the SVN version and there is no configure script</em> 286 <p>The configure script (and other Makefiles) are generated. Use the 287 autogen.sh script to regenerate the configure script and Makefiles, 288 like:</p> 289 <p><code>./autogen.sh --prefix=/usr --disable-shared</code></p> 290 </li> 291 <li><em>I have troubles when running make tests with gcc-3.0</em> 292 <p>It seems the initial release of gcc-3.0 has a problem with the 293 optimizer which miscompiles the URI module. Please use another 294 compiler.</p> 295 </li> 296 </ol> 297 298 <h3><a name="Developer">Developer</a> corner</h3> 299 <ol> 300 <li><em>Troubles compiling or linking programs using libxml2</em> 301 <p>Usually the problem comes from the fact that the compiler doesn't get 302 the right compilation or linking flags. There is a small shell script 303 <code>xml2-config</code> which is installed as part of libxml2 usual 304 install process which provides those flags. Use</p> 305 <p><code>xml2-config --cflags</code></p> 306 <p>to get the compilation flags and</p> 307 <p><code>xml2-config --libs</code></p> 308 <p>to get the linker flags. Usually this is done directly from the 309 Makefile as:</p> 310 <p><code>CFLAGS=`xml2-config --cflags`</code></p> 311 <p><code>LIBS=`xml2-config --libs`</code></p> 312 </li> 313 <li><em>I want to install my own copy of libxml2 in my home directory and 314 link my programs against it, but it doesn't work</em> 315 <p>There are many different ways to accomplish this. Here is one way to 316 do this under Linux. Suppose your home directory is <code>/home/user. 317 </code>Then:</p> 318 <ul> 319 <li>Create a subdirectory, let's call it <code>myxml</code></li> 320 <li>unpack the libxml2 distribution into that subdirectory</li> 321 <li>chdir into the unpacked distribution 322 (<code>/home/user/myxml/libxml2 </code>)</li> 323 <li>configure the library using the "<code>--prefix</code>" switch, 324 specifying an installation subdirectory in 325 <code>/home/user/myxml</code>, e.g. 326 <p><code>./configure --prefix /home/user/myxml/xmlinst</code> {other 327 configuration options}</p> 328 </li> 329 <li>now run <code>make</code> followed by <code>make install</code></li> 330 <li>At this point, the installation subdirectory contains the complete 331 "private" include files, library files and binary program files (e.g. 332 xmllint), located in 333 <p><code>/home/user/myxml/xmlinst/lib, 334 /home/user/myxml/xmlinst/include </code> and <code> 335 /home/user/myxml/xmlinst/bin</code></p> 336 respectively.</li> 337 <li>In order to use this "private" library, you should first add it to 338 the beginning of your default PATH (so that your own private program 339 files such as xmllint will be used instead of the normal system 340 ones). To do this, the Bash command would be 341 <p><code>export PATH=/home/user/myxml/xmlinst/bin:$PATH</code></p> 342 </li> 343 <li>Now suppose you have a program <code>test1.c</code> that you would 344 like to compile with your "private" library. Simply compile it using 345 the command 346 <p><code>gcc `xml2-config --cflags --libs` -o test test.c</code></p> 347 Note that, because your PATH has been set with <code> 348 /home/user/myxml/xmlinst/bin</code> at the beginning, the xml2-config 349 program which you just installed will be used instead of the system 350 default one, and this will <em>automatically</em> get the correct 351 libraries linked with your program.</li> 352 </ul> 353 </li> 354 355 <p></p> 356 <li><em>xmlDocDump() generates output on one line.</em> 357 <p>Libxml2 will not <strong>invent</strong> spaces in the content of a 358 document since <strong>all spaces in the content of a document are 359 significant</strong>. If you build a tree from the API and want 360 indentation:</p> 361 <ol> 362 <li>the correct way is to generate those yourself too.</li> 363 <li>the dangerous way is to ask libxml2 to add those blanks to your 364 content <strong>modifying the content of your document in the 365 process</strong>. The result may not be what you expect. There is 366 <strong>NO</strong> way to guarantee that such a modification won't 367 affect other parts of the content of your document. See <a 368 href="http://xmlsoft.org/html/libxml-parser.html#xmlKeepBlanksDefault">xmlKeepBlanksDefault 369 ()</a> and <a 370 href="http://xmlsoft.org/html/libxml-tree.html#xmlSaveFormatFile">xmlSaveFormatFile 371 ()</a></li> 372 </ol> 373 </li> 374 <p></p> 375 <li><em>Extra nodes in the document:</em> 376 <p><em>For an XML file as below:</em></p> 377 <pre><?xml version="1.0"?> 378 <PLAN xmlns="http://www.argus.ca/autotest/1.0/"> 379 <NODE CommFlag="0"/> 380 <NODE CommFlag="1"/> 381 </PLAN></pre> 382 <p><em>after parsing it with the function 383 pxmlDoc=xmlParseFile(...);</em></p> 384 <p><em>I want to the get the content of the first node (node with the 385 CommFlag="0")</em></p> 386 <p><em>so I did it as following;</em></p> 387 <pre>xmlNodePtr pnode; 388 pnode=pxmlDoc->children->children;</pre> 389 <p><em>but it does not work. If I change it to</em></p> 390 <pre>pnode=pxmlDoc->children->children->next;</pre> 391 <p><em>then it works. Can someone explain it to me.</em></p> 392 <p></p> 393 <p>In XML all characters in the content of the document are significant 394 <strong>including blanks and formatting line breaks</strong>.</p> 395 <p>The extra nodes you are wondering about are just that, text nodes with 396 the formatting spaces which are part of the document but that people tend 397 to forget. There is a function <a 398 href="http://xmlsoft.org/html/libxml-parser.html">xmlKeepBlanksDefault 399 ()</a> to remove those at parse time, but that's an heuristic, and its 400 use should be limited to cases where you are certain there is no 401 mixed-content in the document.</p> 402 </li> 403 <li><em>I get compilation errors of existing code like when accessing 404 <strong>root</strong> or <strong>child fields</strong> of nodes.</em> 405 <p>You are compiling code developed for libxml version 1 and using a 406 libxml2 development environment. Either switch back to libxml v1 devel or 407 even better fix the code to compile with libxml2 (or both) by <a 408 href="upgrade.html">following the instructions</a>.</p> 409 </li> 410 <li><em>I get compilation errors about non existing 411 <strong>xmlRootNode</strong> or <strong>xmlChildrenNode</strong> 412 fields.</em> 413 <p>The source code you are using has been <a 414 href="upgrade.html">upgraded</a> to be able to compile with both libxml 415 and libxml2, but you need to install a more recent version: 416 libxml(-devel) >= 1.8.8 or libxml2(-devel) >= 2.1.0</p> 417 </li> 418 <li><em>Random crashes in threaded applications</em> 419 <p>Read and follow all advices on the <a href="threads.html">thread 420 safety</a> page, and make 100% sure you never call xmlCleanupParser() 421 while the library or an XML document might still be in use by another 422 thread.</p> 423 </li> 424 <li><em>The example provided in the web page does not compile.</em> 425 <p>It's hard to maintain the documentation in sync with the code 426 <grin/> ...</p> 427 <p>Check the previous points 1/ and 2/ raised before, and please send 428 patches.</p> 429 </li> 430 <li><em>Where can I get more examples and information than provided on the 431 web page?</em> 432 <p>Ideally a libxml2 book would be nice. I have no such plan ... But you 433 can:</p> 434 <ul> 435 <li>check more deeply the <a href="html/libxml-lib.html">existing 436 generated doc</a></li> 437 <li>have a look at <a href="examples/index.html">the set of 438 examples</a>.</li> 439 <li>look for examples of use for libxml2 function using the Gnome code 440 or by asking on Google.</li> 441 <li><a 442 href="http://svn.gnome.org/viewvc/libxml2/trunk/">Browse 443 the libxml2 source</a> , I try to write code as clean and documented 444 as possible, so looking at it may be helpful. In particular the code 445 of <a href="http://svn.gnome.org/viewvc/libxml2/trunk/xmllint.c?view=markup">xmllint.c</a> and of the various testXXX.c test programs should 446 provide good examples of how to do things with the library.</li> 447 </ul> 448 </li> 449 <p></p> 450 <li><em>What about C++ ?</em> 451 <p>libxml2 is written in pure C in order to allow easy reuse on a number 452 of platforms, including embedded systems. I don't intend to convert to 453 C++.</p> 454 <p>There is however a C++ wrapper which may fulfill your needs:</p> 455 <ul> 456 <li>by Ari Johnson <ari (a] btigate.com>: 457 <p>Website: <a 458 href="http://libxmlplusplus.sourceforge.net/">http://libxmlplusplus.sourceforge.net/</a></p> 459 <p>Download: <a 460 href="http://sourceforge.net/project/showfiles.php?group_id=12999">http://sourceforge.net/project/showfiles.php?group_id=12999</a></p> 461 </li> 462 </ul> 463 </li> 464 <li><em>How to validate a document a posteriori ?</em> 465 <p>It is possible to validate documents which had not been validated at 466 initial parsing time or documents which have been built from scratch 467 using the API. Use the <a 468 href="http://xmlsoft.org/html/libxml-valid.html#xmlValidateDtd">xmlValidateDtd()</a> 469 function. It is also possible to simply add a DTD to an existing 470 document:</p> 471 <pre>xmlDocPtr doc; /* your existing document */ 472 xmlDtdPtr dtd = xmlParseDTD(NULL, filename_of_dtd); /* parse the DTD */ 473 474 dtd->name = xmlStrDup((xmlChar*)"root_name"); /* use the given root */ 475 476 doc->intSubset = dtd; 477 if (doc->children == NULL) xmlAddChild((xmlNodePtr)doc, (xmlNodePtr)dtd); 478 else xmlAddPrevSibling(doc->children, (xmlNodePtr)dtd); 479 </pre> 480 </li> 481 <li><em>So what is this funky "xmlChar" used all the time?</em> 482 <p>It is a null terminated sequence of utf-8 characters. And only utf-8! 483 You need to convert strings encoded in different ways to utf-8 before 484 passing them to the API. This can be accomplished with the iconv library 485 for instance.</p> 486 </li> 487 <li>etc ...</li> 488 </ol> 489 490 <p></p> 491 492 <h2><a name="Documentat">Developer Menu</a></h2> 493 494 <p>There are several on-line resources related to using libxml:</p> 495 <ol> 496 <li>Use the <a href="search.php">search engine</a> to look up 497 information.</li> 498 <li>Check the <a href="FAQ.html">FAQ.</a></li> 499 <li>Check the <a href="http://xmlsoft.org/html/libxml-lib.html">extensive 500 documentation</a> automatically extracted from code comments.</li> 501 <li>Look at the documentation about <a href="encoding.html">libxml 502 internationalization support</a>.</li> 503 <li>This page provides a global overview and <a href="example.html">some 504 examples</a> on how to use libxml.</li> 505 <li><a href="examples/index.html">Code examples</a></li> 506 <li>John Fleck's libxml2 tutorial: <a href="tutorial/index.html">html</a> 507 or <a href="tutorial/xmltutorial.pdf">pdf</a>.</li> 508 <li>If you need to parse large files, check the <a 509 href="xmlreader.html">xmlReader</a> API tutorial</li> 510 <li><a href="mailto:james (a] daa.com.au">James Henstridge</a> wrote <a 511 href="http://www.jamesh.id.au/articles/libxml-sax/libxml-sax.html">some nice 512 documentation</a> explaining how to use the libxml SAX interface.</li> 513 <li>George Lebl wrote <a 514 href="http://www-106.ibm.com/developerworks/library/l-gnome3/">an article 515 for IBM developerWorks</a> about using libxml.</li> 516 <li>Check <a href="http://svn.gnome.org/viewvc/libxml2/trunk/TODO?view=markup">the TODO 517 file</a>.</li> 518 <li>Read the <a href="upgrade.html">1.x to 2.x upgrade path</a> 519 description. If you are starting a new project using libxml you should 520 really use the 2.x version.</li> 521 <li>And don't forget to look at the <a 522 href="http://mail.gnome.org/archives/xml/">mailing-list archive</a>.</li> 523 </ol> 524 525 <h2><a name="Reporting">Reporting bugs and getting help</a></h2> 526 527 <p>Well, bugs or missing features are always possible, and I will make a 528 point of fixing them in a timely fashion. The best way to report a bug is to 529 use the <a href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Gnome 530 bug tracking database</a> (make sure to use the "libxml2" module name). I 531 look at reports there regularly and it's good to have a reminder when a bug 532 is still open. Be sure to specify that the bug is for the package libxml2.</p> 533 534 <p>For small problems you can try to get help on IRC, the #xml channel on 535 irc.gnome.org (port 6667) usually has a few people subscribed which may help 536 (but there is no guarantee and if a real issue is raised it should go on the 537 mailing-list for archival).</p> 538 539 <p>There is also a mailing-list <a 540 href="mailto:xml (a] gnome.org">xml (a] gnome.org</a> for libxml, with an <a 541 href="http://mail.gnome.org/archives/xml/">on-line archive</a> (<a 542 href="http://xmlsoft.org/messages">old</a>). To subscribe to this list, 543 please visit the <a 544 href="http://mail.gnome.org/mailman/listinfo/xml">associated Web</a> page and 545 follow the instructions. <strong>Do not send code, I won't debug it</strong> 546 (but patches are really appreciated!).</p> 547 548 <p>Please note that with the current amount of virus and SPAM, sending mail 549 to the list without being subscribed won't work. There is *far too many 550 bounces* (in the order of a thousand a day !) I cannot approve them manually 551 anymore. If your mail to the list bounced waiting for administrator approval, 552 it is LOST ! Repost it and fix the problem triggering the error. Also please 553 note that <span style="color: #FF0000; background-color: #FFFFFF">emails with 554 a legal warning asking to not copy or redistribute freely the information 555 they contain</span> are <strong>NOT</strong> acceptable for the mailing-list, 556 such mail will as much as possible be discarded automatically, and are less 557 likely to be answered if they made it to the list, <strong>DO NOT</strong> 558 post to the list from an email address where such legal requirements are 559 automatically added, get private paying support if you can't share 560 information.</p> 561 562 <p>Check the following <strong><span style="color: #FF0000">before 563 posting</span></strong>:</p> 564 <ul> 565 <li>Read the <a href="FAQ.html">FAQ</a> and <a href="search.php">use the 566 search engine</a> to get information related to your problem.</li> 567 <li>Make sure you are <a href="ftp://xmlsoft.org/libxml2/">using a recent 568 version</a>, and that the problem still shows up in a recent version.</li> 569 <li>Check the <a href="http://mail.gnome.org/archives/xml/">list 570 archives</a> to see if the problem was reported already. In this case 571 there is probably a fix available, similarly check the <a 572 href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">registered 573 open bugs</a>.</li> 574 <li>Make sure you can reproduce the bug with xmllint or one of the test 575 programs found in source in the distribution.</li> 576 <li>Please send the command showing the error as well as the input (as an 577 attachment)</li> 578 </ul> 579 580 <p>Then send the bug with associated information to reproduce it to the <a 581 href="mailto:xml (a] gnome.org">xml (a] gnome.org</a> list; if it's really libxml 582 related I will approve it. Please do not send mail to me directly, it makes 583 things really hard to track and in some cases I am not the best person to 584 answer a given question, ask on the list.</p> 585 586 <p>To <span style="color: #E50000">be really clear about support</span>:</p> 587 <ul> 588 <li>Support or help <span style="color: #E50000">requests MUST be sent to 589 the list or on bugzilla</span> in case of problems, so that the Question 590 and Answers can be shared publicly. Failing to do so carries the implicit 591 message "I want free support but I don't want to share the benefits with 592 others" and is not welcome. I will automatically Carbon-Copy the 593 xml (a] gnome.org mailing list for any technical reply made about libxml2 or 594 libxslt.</li> 595 <li>There is <span style="color: #E50000">no guarantee of support</span>. If 596 your question remains unanswered after a week, repost it, making sure you 597 gave all the detail needed and the information requested.</li> 598 <li>Failing to provide information as requested or double checking first 599 for prior feedback also carries the implicit message "the time of the 600 library maintainers is less valuable than my time" and might not be 601 welcome.</li> 602 </ul> 603 604 <p>Of course, bugs reported with a suggested patch for fixing them will 605 probably be processed faster than those without.</p> 606 607 <p>If you're looking for help, a quick look at <a 608 href="http://mail.gnome.org/archives/xml/">the list archive</a> may actually 609 provide the answer. I usually send source samples when answering libxml2 610 usage questions. The <a 611 href="http://xmlsoft.org/html/book1.html">auto-generated documentation</a> is 612 not as polished as I would like (i need to learn more about DocBook), but 613 it's a good starting point.</p> 614 615 <h2><a name="help">How to help</a></h2> 616 617 <p>You can help the project in various ways, the best thing to do first is to 618 subscribe to the mailing-list as explained before, check the <a 619 href="http://mail.gnome.org/archives/xml/">archives </a>and the <a 620 href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Gnome bug 621 database</a>:</p> 622 <ol> 623 <li>Provide patches when you find problems.</li> 624 <li>Provide the diffs when you port libxml2 to a new platform. They may not 625 be integrated in all cases but help pinpointing portability problems 626 and</li> 627 <li>Provide documentation fixes (either as patches to the code comments or 628 as HTML diffs).</li> 629 <li>Provide new documentations pieces (translations, examples, etc 630 ...).</li> 631 <li>Check the TODO file and try to close one of the items.</li> 632 <li>Take one of the points raised in the archive or the bug database and 633 provide a fix. <a href="mailto:daniel (a] veillard.com">Get in touch with me 634 </a>before to avoid synchronization problems and check that the suggested 635 fix will fit in nicely :-)</li> 636 </ol> 637 638 <h2><a name="Downloads">Downloads</a></h2> 639 640 <p>The latest versions of libxml2 can be found on the <a 641 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> server ( <a 642 href="ftp://xmlsoft.org/libxml2/">FTP</a> and rsync are available), there are also 643 mirrors (<a href="ftp://fr.rpmfind.net/pub/libxml/">France</a> and 644 Antonin Sprinzl also provide <a href="ftp://gd.tuwien.ac.at/pub/libxml/">a 645 mirror in Austria</a>). (NOTE that you need both the <a 646 href="http://rpmfind.net/linux/RPM/libxml2.html">libxml(2)</a> and <a 647 href="http://rpmfind.net/linux/RPM/libxml2-devel.html">libxml(2)-devel</a> 648 packages installed to compile applications using libxml if using RPMs.)</p> 649 650 <p>You can find all the history of libxml(2) and libxslt releases in the <a 651 href="http://xmlsoft.org/sources/old/">old</a> directory. The precompiled 652 Windows binaries made by Igor Zlatovic are available in the <a 653 href="http://xmlsoft.org/sources/win32/">win32</a> directory.</p> 654 655 <p>Binary ports:</p> 656 <ul> 657 <li>RPMs for x86_64 are available directly on <a 658 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a>, the source RPM will compile on 659 any architecture supported.</li> 660 <li><a href="mailto:igor (a] zlatkovic.com">Igor Zlatkovic</a> is now the 661 maintainer of the Windows port, <a 662 href="http://www.zlatkovic.com/projects/libxml/index.html">he provides 663 binaries</a>.</li> 664 <li>OpenCSW provides <a 665 href="http://opencsw.org/packages/libxml2">Solaris 666 binaries</a>.</li> 667 <li><a href="mailto:Steve.Ball (a] explain.com.au">Steve Ball</a> provides <a 668 href="http://www.explain.com.au/oss/libxml2xslt.html">Mac Os X 669 binaries</a>.</li> 670 <li>The HP-UX porting center provides <a 671 href="http://hpux.connect.org.uk/hppd/hpux/Gnome/">HP-UX binaries</a></li> 672 <li>Bull provides precompiled <a 673 href="http://gnome.bullfreeware.com/new_index.html">RPMs for AIX</a> as 674 patr of their GNOME packages</li> 675 </ul> 676 677 <p>If you know other supported binary ports, please <a 678 href="http://veillard.com/">contact me</a>.</p> 679 680 <p><a name="Snapshot">Snapshot:</a></p> 681 <ul> 682 <li>Code from the GNOME GIT base libxml2 module, updated hourly <a 683 href="ftp://xmlsoft.org/libxml2/libxml2-git-snapshot.tar.gz">libxml2-git-snapshot.tar.gz</a>.</li> 684 <li>Docs, content of the web site, the list archive included <a 685 href="ftp://xmlsoft.org/libxml2/libxml-docs.tar.gz">libxml-docs.tar.gz</a>.</li> 686 </ul> 687 688 <p><a name="Contribs">Contributions:</a></p> 689 690 <p>I do accept external contributions, especially if compiling on another 691 platform, get in touch with the list to upload the package, wrappers for 692 various languages have been provided, and can be found in the <a 693 href="python.html">bindings section</a></p> 694 695 <p>Libxml2 is also available from GIT:</p> 696 <ul> 697 <li><p>See <a href="http://git.gnome.org/browse/libxml2/">libxml2 Git web</a>. 698 To checkout a local tree use:</p> 699 <pre>git clone git://git.gnome.org/libxml2</pre> 700 </li> 701 <li>The <strong>libxslt</strong> module is also present 702 <a href="http://git.gnome.org/browse/libxslt/">there</a>.</li> 703 </ul> 704 705 <h2><a name="News">Releases</a></h2> 706 707 <p>The <a href="ChangeLog.html">change log</a> describes the recents commits 708 to the <a href="http://git.gnome.org/browse/libxml2/">GIT</a> code base.</p> 709 710 <p>Here is the list of public releases:</p> 711 712 <h3>v2.9.9: Jan 03 2019</h3> 713 <ul> 714 <li>Security:<br/> 715 CVE-2018-9251 CVE-2018-14567 Fix infinite loop in LZMA decompression (Nick Wellnhofer),<br/> 716 CVE-2018-14404 Fix nullptr deref with XPath logic ops (Nick Wellnhofer),<br/> 717 </li> 718 719 <li>Documentation:<br/> 720 reader: Fix documentation comment (Mohammed Sadiq)<br/> 721 </li> 722 723 <li>Portability:<br/> 724 Fix MSVC build with lzma (Nick Wellnhofer),<br/> 725 Variables need 'extern' in static lib on Cygwin (Michael Haubenwallner),<br/> 726 Really declare dllexport/dllimport for Cygwin (Michael Haubenwallner),<br/> 727 Merge branch 'patch-2' into 'master' (Nick Wellnhofer),<br/> 728 Change dir to $THEDIR after ACLOCAL_PATH check autoreconf creates aclocal.m4 in $srcdir (Vitaly Buka),<br/> 729 Improve error message if pkg.m4 couldn't be found (Nick Wellnhofer),<br/> 730 NaN and Inf fixes for pre-C99 compilers (Nick Wellnhofer)<br/> 731 </li> 732 733 <li>Bug Fixes:<br/> 734 Revert "Support xmlTextReaderNextSibling w/o preparsed doc" (Nick Wellnhofer),<br/> 735 Fix building relative URIs (Thomas Holder),<br/> 736 Problem with data in interleave in RelaxNG validation (Nikolai Weibull),<br/> 737 Fix memory leak in xmlSwitchInputEncodingInt error path (Nick Wellnhofer),<br/> 738 Set doc on element obtained from freeElems (Nick Wellnhofer),<br/> 739 Fix HTML serialization with UTF-8 encoding (Nick Wellnhofer),<br/> 740 Use actual doc in xmlTextReaderRead*Xml (Nick Wellnhofer),<br/> 741 Unlink node before freeing it in xmlSAX2StartElement (Nick Wellnhofer),<br/> 742 Check return value of nodePush in xmlSAX2StartElement (Nick Wellnhofer),<br/> 743 Free input buffer in xmlHaltParser (Nick Wellnhofer),<br/> 744 Reset HTML parser input pointers on encoding failure (Nick Wellnhofer),<br/> 745 Don't run icu_parse_test if EUC-JP is unsupported (Nick Wellnhofer),<br/> 746 Fix xmlSchemaValidCtxtPtr reuse memory leak (Greg Hildstrom),<br/> 747 Fix xmlTextReaderNext with preparsed document (Felix Bunemann),<br/> 748 Remove stray character from comment (Nick Wellnhofer),<br/> 749 Remove a misleading line from xmlCharEncOutput (Andrey Bienkowski),<br/> 750 HTML noscript should not close p (Daniel Veillard),<br/> 751 Don't change context node in xmlXPathRoot (Nick Wellnhofer),<br/> 752 Stop using XPATH_OP_RESET (Nick Wellnhofer),<br/> 753 Revert "Change calls to xmlCharEncInput to set flush false" (Nick Wellnhofer)<br/> 754 </li> 755 756 <li>Improvements:<br/> 757 Fix "Problem with data in interleave in RelaxNG validation" (Nikolai Weibull),<br/> 758 cleanup: remove some unreachable code (Thomas Holder),<br/> 759 add --relative to testURI (Thomas Holder),<br/> 760 Remove redefined starts and defines inside include elements (Nikolai Weibull),<br/> 761 Allow choice within choice in nameClass in RELAX NG (Nikolai Weibull),<br/> 762 Look inside divs for starts and defines inside include (Nikolai Weibull),<br/> 763 Add compile and libxml2-config.cmake to .gitignore (Nikolai Weibull),<br/> 764 Stop using doc->charset outside parser code (Nick Wellnhofer),<br/> 765 Add newlines to 'xmllint --xpath' output (Nick Wellnhofer),<br/> 766 Don't include SAX.h from globals.h (Nick Wellnhofer),<br/> 767 Support xmlTextReaderNextSibling w/o preparsed doc (Felix Bunemann),<br/> 768 Don't instruct user to run make when autogen.sh failed ((Buo-ren Lin)),<br/> 769 Run Travis ASan tests with "sudo: required" (Nick Wellnhofer),<br/> 770 Improve restoring of context size and position (Nick Wellnhofer),<br/> 771 Simplify and harden nodeset filtering (Nick Wellnhofer),<br/> 772 Avoid unnecessary backups of the context node (Nick Wellnhofer),<br/> 773 Fix inconsistency in xmlXPathIsInf (Nick Wellnhofer)<br/> 774 </li> 775 776 <li>Cleanups:<br/> 777 </li> 778 </ul> 779 <h3>v2.9.8: Mar 05 2018</h3> 780 <ul> 781 <li>Portability:<br/> 782 python: remove single use of _PyVerify_fd (Patrick Welche),<br/> 783 Build more test executables on Windows/MSVC (Nick Wellnhofer),<br/> 784 Stop including ansidecl.h (Nick Wellnhofer),<br/> 785 Fix libz and liblzma detection (Nick Wellnhofer),<br/> 786 Revert "Compile testapi with -Wno-unused-function" (Nick Wellnhofer)<br/> 787 </li> 788 789 <li>Bug Fixes:<br/> 790 Fix xmlParserEntityCheck (Nick Wellnhofer),<br/> 791 Halt parser in case of encoding error (Nick Wellnhofer),<br/> 792 Clear entity content in case of errors (Nick Wellnhofer),<br/> 793 Change calls to xmlCharEncInput to set flush false when not final call. Having flush incorrectly set to true causes errors for ICU. (Joel Hockey),<br/> 794 Fix buffer over-read in xmlParseNCNameComplex (Nick Wellnhofer),<br/> 795 Fix ICU library filenames on Windows/MSVC (Nick Wellnhofer),<br/> 796 Fix xmlXPathIsNaN broken by recent commit (Nick Wellnhofer),<br/> 797 Fix -Wenum-compare warnings (Nick Wellnhofer),<br/> 798 Fix callback signature in testapi.c (Nick Wellnhofer),<br/> 799 Fix unused parameter warning without ICU (Nick Wellnhofer),<br/> 800 Fix IO callback signatures (Nick Wellnhofer),<br/> 801 Fix misc callback signatures (Nick Wellnhofer),<br/> 802 Fix list callback signatures (Nick Wellnhofer),<br/> 803 Fix hash callback signatures (Nick Wellnhofer),<br/> 804 Refactor name and type signature for xmlNop (Vlad Tsyrklevich),<br/> 805 Fixed ICU to set flush correctly and provide pivot buffer. (Joel Hockey),<br/> 806 Skip EBCDIC tests if EBCDIC isn't supported (Nick Wellnhofer)<br/> 807 </li> 808 809 <li>Improvements:<br/> 810 Disable pointer-overflow UBSan checks under Travis (Nick Wellnhofer),<br/> 811 Improve handling of context input_id (Daniel Veillard),<br/> 812 Add resource file to Windows DLL (ccpaging),<br/> 813 Run Travis tests with -Werror (Nick Wellnhofer),<br/> 814 Build with "-Wall -Wextra" (Nick Wellnhofer),<br/> 815 Fix -Wtautological-pointer-compare warnings (Nick Wellnhofer),<br/> 816 Remove unused AC_CHECKs (Nick Wellnhofer),<br/> 817 Update information about contributing (Nick Wellnhofer),<br/> 818 Fix -Wmisleading-indentation warnings (Nick Wellnhofer),<br/> 819 Don't touch CFLAGS in configure.ac (Nick Wellnhofer),<br/> 820 Ignore function pointer cast warnings (Nick Wellnhofer),<br/> 821 Simplify XPath NaN, inf and -0 handling (Nick Wellnhofer),<br/> 822 Introduce xmlPosixStrdup and update xmlMemStrdup (Nick Wellnhofer),<br/> 823 Add test for ICU flush and pivot buffer (Nick Wellnhofer),<br/> 824 Compile testapi with -Wno-unused-function (Nick Wellnhofer)<br/> 825 </li> 826 </ul> 827 <h3>2.9.7: Nov 02 2017</h3> 828 <ul> 829 <li>Documentation:<br/> 830 xmlcatalog: refresh man page wrt. quering system catalog easily (Jan Pokorn)<br/> 831 </li> 832 833 <li>Portability:<br/> 834 Fix deprecated Travis compiler flag (Nick Wellnhofer),<br/> 835 Add declaration for DllMain (J. Peter Mugaas),<br/> 836 Fix preprocessor conditional in threads.h (J. Peter Mugaas),<br/> 837 Fix pointer comparison warnings on 64-bit Windows (J. Peter Mugaas),<br/> 838 Fix macro redefinition warning (J. Peter Mugaas),<br/> 839 Default to native threads on MinGW-w64 (Nick Wellnhofer),<br/> 840 Simplify Windows IO functions (Nick Wellnhofer),<br/> 841 Fix runtest on Windows (Nick Wellnhofer),<br/> 842 socklen_t is always int on Windows (Nick Wellnhofer),<br/> 843 Don't redefine socket error codes on Windows (Nick Wellnhofer),<br/> 844 Fix pointer/int cast warnings on 64-bit Windows (Nick Wellnhofer),<br/> 845 Fix Windows compiler warnings in xmlCanonicPath (Nick Wellnhofer)<br/> 846 </li> 847 848 <li>Bug Fixes:<br/> 849 xmlcatalog: restore ability to query system catalog easily (Jan Pokorn),<br/> 850 Fix comparison of nodesets to strings (Nick Wellnhofer)<br/> 851 </li> 852 853 <li>Improvements:<br/> 854 Add Makefile rules to rebuild HTML man pages (Nick Wellnhofer),<br/> 855 Fix mixed decls and code in timsort.h (Nick Wellnhofer),<br/> 856 Rework handling of return values in thread tests (Nick Wellnhofer),<br/> 857 Fix unused variable warnings in testrecurse (Nick Wellnhofer),<br/> 858 Fix -Wimplicit-fallthrough warnings (J. Peter Mugaas),<br/> 859 Upgrade timsort.h to latest revision (Nick Wellnhofer),<br/> 860 Increase warning level to /W3 under MSVC (Nick Wellnhofer),<br/> 861 Fix a couple of warnings in dict.c and threads.c (Nick Wellnhofer),<br/> 862 Update .gitignore for Windows (Nick Wellnhofer),<br/> 863 Fix unused variable warnings in nanohttp.c (Nick Wellnhofer),<br/> 864 Fix the Windows header mess (Nick Wellnhofer),<br/> 865 Don't include winsock2.h in xmllint.c (Nick Wellnhofer),<br/> 866 Remove generated file python/setup.py from version control (Nick Wellnhofer),<br/> 867 Use __linux__ macro in generated code (Nick Wellnhofer)<br/> 868 </li> 869 870 </ul> 871 <h3>v2.9.6: Oct 06 2017</h3> 872 <ul> 873 <li>Portability:<br/> 874 Change preprocessor OS tests to __linux__ (Nick Wellnhofer)<br/> 875 </li> 876 877 <li>Bug Fixes:<br/> 878 Fix XPath stack frame logic (Nick Wellnhofer),<br/> 879 Report undefined XPath variable error message (Nick Wellnhofer),<br/> 880 Fix regression with librsvg (Nick Wellnhofer),<br/> 881 Handle more invalid entity values in recovery mode (Nick Wellnhofer),<br/> 882 Fix structured validation errors (Nick Wellnhofer),<br/> 883 Fix memory leak in LZMA decompressor (Nick Wellnhofer),<br/> 884 Set memory limit for LZMA decompression (Nick Wellnhofer),<br/> 885 Handle illegal entity values in recovery mode (Nick Wellnhofer),<br/> 886 Fix debug dump of streaming XPath expressions (Nick Wellnhofer),<br/> 887 Fix memory leak in nanoftp (Nick Wellnhofer),<br/> 888 Fix memory leaks in SAX1 parser (Nick Wellnhofer)<br/> 889 </li> 890 </ul> 891 <h3>v2.9.5: Sep 04 2017</h3> 892 <ul> 893 894 <li>Security:<br/> 895 Detect infinite recursion in parameter entities (Nick Wellnhofer),<br/> 896 Fix handling of parameter-entity references (Nick Wellnhofer),<br/> 897 Disallow namespace nodes in XPointer ranges (Nick Wellnhofer),<br/> 898 Fix XPointer paths beginning with range-to (Nick Wellnhofer)<br/> 899 </li> 900 901 <li>Documentation:<br/> 902 Documentation fixes (Nick Wellnhofer),<br/> 903 Spelling and grammar fixes (Nick Wellnhofer)<br/> 904 </li> 905 906 <li>Portability:<br/> 907 Adding README.zOS to list of extra files for the release (Daniel Veillard),<br/> 908 Description of work needed to compile on zOS (Stphane Michaut),<br/> 909 Porting libxml2 on zOS encoding of code (Stphane Michaut),<br/> 910 small changes for OS/400 (Patrick Monnerat),<br/> 911 relaxng.c, xmlschemas.c: Fix build on pre-C99 compilers (Chun-wei Fan)<br/> 912 </li> 913 914 <li>Bug Fixes:<br/> 915 Problem resolving relative URIs (Daniel Veillard),<br/> 916 Fix unwanted warnings when switching encodings (Nick Wellnhofer),<br/> 917 Fix signature of xmlSchemaAugmentImportedIDC (Daniel Veillard),<br/> 918 Heap-buffer-overflow read of size 1 in xmlFAParsePosCharGroup (David Kilzer),<br/> 919 Fix NULL pointer deref in xmlFAParseCharClassEsc (Nick Wellnhofer),<br/> 920 Fix infinite loops with push parser in recovery mode (Nick Wellnhofer),<br/> 921 Send xmllint usage error to stderr (Nick Wellnhofer),<br/> 922 Fix NULL deref in xmlParseExternalEntityPrivate (Nick Wellnhofer),<br/> 923 Make sure not to call IS_BLANK_CH when parsing the DTD (Nick Wellnhofer),<br/> 924 Fix xmlHaltParser (Nick Wellnhofer),<br/> 925 Fix pathological performance when outputting charrefs (Nick Wellnhofer),<br/> 926 Fix invalid-source-encoding warnings in testWriter.c (Nick Wellnhofer),<br/> 927 Fix duplicate SAX callbacks for entity content (David Kilzer),<br/> 928 Treat URIs with scheme as absolute in C14N (Nick Wellnhofer),<br/> 929 Fix copy-paste errors in error messages (Nick Wellnhofer),<br/> 930 Fix sanity check in htmlParseNameComplex (Nick Wellnhofer),<br/> 931 Fix potential infinite loop in xmlStringLenDecodeEntities (Nick Wellnhofer),<br/> 932 Reset parser input pointers on encoding failure (Nick Wellnhofer),<br/> 933 Fix memory leak in xmlParseEntityDecl error path (Nick Wellnhofer),<br/> 934 Fix xmlBuildRelativeURI for URIs starting with './' (Nick Wellnhofer),<br/> 935 Fix type confusion in xmlValidateOneNamespace (Nick Wellnhofer),<br/> 936 Fix memory leak in xmlStringLenGetNodeList (Nick Wellnhofer),<br/> 937 Fix NULL pointer deref in xmlDumpElementContent (Daniel Veillard),<br/> 938 Fix memory leak in xmlBufAttrSerializeTxtContent (Nick Wellnhofer),<br/> 939 Stop parser on unsupported encodings (Nick Wellnhofer),<br/> 940 Check for integer overflow in memory debug code (Nick Wellnhofer),<br/> 941 Fix buffer size checks in xmlSnprintfElementContent (Nick Wellnhofer),<br/> 942 Avoid reparsing in xmlParseStartTag2 (Nick Wellnhofer),<br/> 943 Fix undefined behavior in xmlRegExecPushStringInternal (Nick Wellnhofer),<br/> 944 Check XPath exponents for overflow (Nick Wellnhofer),<br/> 945 Check for overflow in xmlXPathIsPositionalPredicate (Nick Wellnhofer),<br/> 946 Fix spurious error message (Nick Wellnhofer),<br/> 947 Fix memory leak in xmlCanonicPath (Nick Wellnhofer),<br/> 948 Fix memory leak in xmlXPathCompareNodeSetValue (Nick Wellnhofer),<br/> 949 Fix memory leak in pattern error path (Nick Wellnhofer),<br/> 950 Fix memory leak in parser error path (Nick Wellnhofer),<br/> 951 Fix memory leaks in XPointer error paths (Nick Wellnhofer),<br/> 952 Fix memory leak in xmlXPathNodeSetMergeAndClear (Nick Wellnhofer),<br/> 953 Fix memory leak in XPath filter optimizations (Nick Wellnhofer),<br/> 954 Fix memory leaks in XPath error paths (Nick Wellnhofer),<br/> 955 Do not leak the new CData node if adding fails (David Tardon),<br/> 956 Prevent unwanted external entity reference (Neel Mehta),<br/> 957 Increase buffer space for port in HTTP redirect support (Daniel Veillard),<br/> 958 Fix more NULL pointer derefs in xpointer.c (Nick Wellnhofer),<br/> 959 Avoid function/data pointer conversion in xpath.c (Nick Wellnhofer),<br/> 960 Fix format string warnings (Nick Wellnhofer),<br/> 961 Disallow namespace nodes in XPointer points (Nick Wellnhofer),<br/> 962 Fix comparison with root node in xmlXPathCmpNodes (Nick Wellnhofer),<br/> 963 Fix attribute decoding during XML schema validation (Alex Henrie),<br/> 964 Fix NULL pointer deref in XPointer range-to (Nick Wellnhofer)<br/> 965 </li> 966 967 <li>Improvements:<br/> 968 Updating the spec file to reflect Fedora 24 (Daniel Veillard),<br/> 969 Add const in five places to move 1 KiB to .rdata (Bruce Dawson),<br/> 970 Fix missing part of comment for function xmlXPathEvalExpression() (Daniel Veillard),<br/> 971 Get rid of "blanks wrapper" for parameter entities (Nick Wellnhofer),<br/> 972 Simplify handling of parameter entity references (Nick Wellnhofer),<br/> 973 Deduplicate code in encoding.c (Nick Wellnhofer),<br/> 974 Make HTML parser functions take const pointers (Nick Wellnhofer),<br/> 975 Build test programs only when needed (Nick Wellnhofer),<br/> 976 Fix doc/examples/index.py (Nick Wellnhofer),<br/> 977 Fix compiler warnings in threads.c (Nick Wellnhofer),<br/> 978 Fix empty-body warning in nanohttp.c (Nick Wellnhofer),<br/> 979 Fix cast-align warnings (Nick Wellnhofer),<br/> 980 Fix unused-parameter warnings (Nick Wellnhofer),<br/> 981 Rework entity boundary checks (Nick Wellnhofer),<br/> 982 Don't switch encoding for internal parameter entities (Nick Wellnhofer),<br/> 983 Merge duplicate code paths handling PE references (Nick Wellnhofer),<br/> 984 Test SAX2 callbacks with entity substitution (Nick Wellnhofer),<br/> 985 Support catalog and threads tests under --without-sax1 (Nick Wellnhofer),<br/> 986 Misc fixes for 'make tests' (Nick Wellnhofer),<br/> 987 Initialize keepBlanks in HTML parser (Nick Wellnhofer),<br/> 988 Add test cases for bug 758518 (David Kilzer),<br/> 989 Fix compiler warning in htmlParseElementInternal (Nick Wellnhofer),<br/> 990 Remove useless check in xmlParseAttributeListDecl (Nick Wellnhofer),<br/> 991 Allow zero sized memory input buffers (Nick Wellnhofer),<br/> 992 Add TODO comment in xmlSwitchEncoding (Nick Wellnhofer),<br/> 993 Check for integer overflow in xmlXPathFormatNumber (Nick Wellnhofer),<br/> 994 Make Travis print UBSan stacktraces (Nick Wellnhofer),<br/> 995 Add .travis.yml (Nick Wellnhofer),<br/> 996 Fix expected error output in Python tests (Nick Wellnhofer),<br/> 997 Simplify control flow in xmlParseStartTag2 (Nick Wellnhofer),<br/> 998 Disable LeakSanitizer when running API tests (Nick Wellnhofer),<br/> 999 Avoid out-of-bound array access in API tests (Nick Wellnhofer),<br/> 1000 Avoid spurious UBSan errors in parser.c (Nick Wellnhofer),<br/> 1001 Parse small XPath numbers more accurately (Nick Wellnhofer),<br/> 1002 Rework XPath rounding functions (Nick Wellnhofer),<br/> 1003 Fix white space in test output (Nick Wellnhofer),<br/> 1004 Fix axis traversal from attribute and namespace nodes (Nick Wellnhofer),<br/> 1005 Check for trailing characters in XPath expressions earlier (Nick Wellnhofer),<br/> 1006 Rework final handling of XPath results (Nick Wellnhofer),<br/> 1007 Make xmlXPathEvalExpression call xmlXPathEval (Nick Wellnhofer),<br/> 1008 Remove unused variables (Nick Wellnhofer),<br/> 1009 Don't print generic error messages in XPath tests (Nick Wellnhofer)<br/> 1010 </li> 1011 1012 <li>Cleanups:<br/> 1013 Fix a couple of misleading indentation errors (Daniel Veillard),<br/> 1014 Remove unnecessary calls to xmlPopInput (Nick Wellnhofer)<br/> 1015 </li> 1016 </ul> 1017 <h3>2.9.4: May 23 2016</h3> 1018 <ul> 1019 <li>Security:<br/> 1020 More format string warnings with possible format string vulnerability (David Kilzer),<br/> 1021 Avoid building recursive entities (Daniel Veillard),<br/> 1022 Heap-based buffer overread in htmlCurrentChar (Pranjal Jumde),<br/> 1023 Heap-based buffer-underreads due to xmlParseName (David Kilzer),<br/> 1024 Heap use-after-free in xmlSAX2AttributeNs (Pranjal Jumde),<br/> 1025 Heap use-after-free in htmlParsePubidLiteral and htmlParseSystemiteral (Pranjal Jumde),<br/> 1026 Fix some format string warnings with possible format string vulnerability (David Kilzer),<br/> 1027 Detect change of encoding when parsing HTML names (Hugh Davenport),<br/> 1028 Fix inappropriate fetch of entities content (Daniel Veillard),<br/> 1029 Bug 759398: Heap use-after-free in xmlDictComputeFastKey <https://bugzilla.gnome.org/show_bug.cgi?id=759398>; (Pranjal Jumde),<br/> 1030 Bug 758605: Heap-based buffer overread in xmlDictAddString <https://bugzilla.gnome.org/show_bug.cgi?id=758605>; (Pranjal Jumde),<br/> 1031 Bug 758588: Heap-based buffer overread in xmlParserPrintFileContextInternal <https://bugzilla.gnome.org/show_bug.cgi?id=758588>; (David Kilzer),<br/> 1032 Bug 757711: heap-buffer-overflow in xmlFAParsePosCharGroup <https://bugzilla.gnome.org/show_bug.cgi?id=757711>; (Pranjal Jumde),<br/> 1033 Add missing increments of recursion depth counter to XML parser. (Peter Simons)<br/> 1034 </li> 1035 1036 <li>Documentation:<br/> 1037 Fix typo: s{ ec -> cr }cipt (Jan Pokorn),<br/> 1038 Fix typos: dictio{ nn -> n }ar{y,ies} (Jan Pokorn),<br/> 1039 Fix typos: PATH_{ SEAPARATOR -> SEPARATOR } (Jan Pokorn),<br/> 1040 Correct a typo. (Shlomi Fish)<br/> 1041 </li> 1042 1043 <li>Portability:<br/> 1044 Correct the usage of LDFLAGS (Mattias Hansson),<br/> 1045 Revert the use of SAVE_LDFLAGS in configure.ac (Mattias Hansson),<br/> 1046 libxml2 hardcodes -L/lib in zlib/lzma tests which breaks cross-compiles (Mike Frysinger),<br/> 1047 Fix apibuild for a recently added construct (Daniel Veillard),<br/> 1048 Use pkg-config to locate zlib when possible (Stewart Brodie),<br/> 1049 Use pkg-config to locate ICU when possible (Stewart Brodie),<br/> 1050 Portability to non C99 compliant compilers (Patrick Monnerat),<br/> 1051 dict.h: Move xmlDictPtr definition before includes to allow direct inclusion. (Patrick Monnerat),<br/> 1052 os400: tell about xmllint and xmlcatalog in README400. (Patrick Monnerat),<br/> 1053 os400: properly process SGML add in XMLCATALOG command. (Patrick Monnerat),<br/> 1054 os400: implement CL command XMLCATALOG. (Patrick Monnerat),<br/> 1055 os400: compile and install program xmlcatalog (qshell-only). (Patrick Monnerat),<br/> 1056 os400: expand tabs in sources, strip trailing blanks. (Patrick Monnerat),<br/> 1057 os400: implement CL command XMLLINT. (Patrick Monnerat),<br/> 1058 os400: compile and install program xmllint (qshell-only). (Patrick Monnerat),<br/> 1059 os400: initscript make_module(): Use options instead of positional parameters. (Patrick Monnerat),<br/> 1060 os400: c14n.rpgle: allow *omit for nullable reference parameters. (Patrick Monnerat),<br/> 1061 os400: use like() for double type. (Patrick Monnerat),<br/> 1062 os400: use like() for int type. (Patrick Monnerat),<br/> 1063 os400: use like() for unsigned int type. (Patrick Monnerat),<br/> 1064 os400: use like() for enum types. (Patrick Monnerat),<br/> 1065 Add xz to xml2-config --libs output (Baruch Siach),<br/> 1066 Bug 760190: configure.ac should be able to build --with-icu without icu-config tool <https://bugzilla.gnome.org/show_bug.cgi?id=760190>; (David Kilzer),<br/> 1067 win32\VC10\config.h and VS 2015 (Bruce Dawson),<br/> 1068 Add configure maintainer mode (orzen)<br/> 1069 </li> 1070 1071 <li>Bug Fixes:<br/> 1072 Avoid an out of bound access when serializing malformed strings (Daniel Veillard),<br/> 1073 Unsigned addition may overflow in xmlMallocAtomicLoc() (David Kilzer),<br/> 1074 Integer signed/unsigned type mismatch in xmlParserInputGrow() (David Kilzer),<br/> 1075 Bug 763071: heap-buffer-overflow in xmlStrncat <https://bugzilla.gnome.org/show_bug.cgi?id=763071>; (Pranjal Jumde),<br/> 1076 Integer overflow parsing port number in URI (Michael Paddon),<br/> 1077 Fix an error with regexp on nullable counted char transition (Daniel Veillard),<br/> 1078 Fix memory leak with XPath namespace nodes (Nick Wellnhofer),<br/> 1079 Fix namespace axis traversal (Nick Wellnhofer),<br/> 1080 Fix null pointer deref in docs with no root element (Hugh Davenport),<br/> 1081 Fix XSD validation of URIs with ampersands (Alex Henrie),<br/> 1082 xmlschemastypes.c: accept endOfDayFrag Times set to "24:00:00" mean "end of day" and should not cause an error. (Patrick Monnerat),<br/> 1083 xmlcatalog: flush stdout before interactive shell input. (Patrick Monnerat),<br/> 1084 xmllint: flush stdout before interactive shell input. (Patrick Monnerat),<br/> 1085 Don't recurse into OP_VALUEs in xmlXPathOptimizeExpression (Nick Wellnhofer),<br/> 1086 Fix namespace::node() XPath expression (Nick Wellnhofer),<br/> 1087 Fix OOB write in xmlXPathEmptyNodeSet (Nick Wellnhofer),<br/> 1088 Fix parsing of NCNames in XPath (Nick Wellnhofer),<br/> 1089 Fix OOB read with invalid UTF-8 in xmlUTF8Strsize (Nick Wellnhofer),<br/> 1090 Do normalize string-based datatype value in RelaxNG facet checking (Audric Schiltknecht),<br/> 1091 Bug 760921: REGRESSION (8eb55d78): doc/examples/io1 test fails after fix for "xmlSaveUri() incorrectly recomposes URIs with rootless paths" <https://bugzilla.gnome.org/show_bug.cgi?id=760921>; (David Kilzer),<br/> 1092 Bug 760861: REGRESSION (bf9c1dad): Missing results for test/schemas/regexp-char-ref_[01].xsd <https://bugzilla.gnome.org/show_bug.cgi?id=760861>; (David Kilzer),<br/> 1093 error.c: *input->cur == 0 does not mean no error (Pavel Raiskup),<br/> 1094 Add missing RNG test files (David Kilzer),<br/> 1095 Bug 760183: REGRESSION (v2.9.3): XML push parser fails with bogus UTF-8 encoding error when multi-byte character in large CDATA section is split across buffer <https://bugzilla.gnome.org/show_bug.cgi?id=760183>; (David Kilzer),<br/> 1096 Bug 758572: ASAN crash in make check <https://bugzilla.gnome.org/show_bug.cgi?id=758572>; (David Kilzer),<br/> 1097 Bug 721158: Missing ICU string when doing --version on xmllint <https://bugzilla.gnome.org/show_bug.cgi?id=721158>; (David Kilzer),<br/> 1098 python 3: libxml2.c wrappers create Unicode str already (Michael Stahl),<br/> 1099 Add autogen.sh to distrib (orzen),<br/> 1100 Heap-based buffer overread in xmlNextChar (Daniel Veillard)<br/> 1101 </li> 1102 1103 <li>Improvements:<br/> 1104 Add more debugging info to runtest (Daniel Veillard),<br/> 1105 Implement "runtest -u" mode (David Kilzer),<br/> 1106 Add a make rule to rebuild for ASAN (Daniel Veillard)<br/> 1107 </li> 1108 </ul> 1109 <h3>v2.9.3: Nov 20 2015</h3> 1110 <ul> 1111 <li>Security:<br/> 1112 CVE-2015-8242 Buffer overead with HTML parser in push mode (Hugh Davenport),<br/> 1113 CVE-2015-7500 Fix memory access error due to incorrect entities boundaries (Daniel Veillard),<br/> 1114 CVE-2015-7499-2 Detect incoherency on GROW (Daniel Veillard),<br/> 1115 CVE-2015-7499-1 Add xmlHaltParser() to stop the parser (Daniel Veillard),<br/> 1116 CVE-2015-5312 Another entity expansion issue (David Drysdale),<br/> 1117 CVE-2015-7497 Avoid an heap buffer overflow in xmlDictComputeFastQKey (David Drysdale),<br/> 1118 CVE-2015-7498 Avoid processing entities after encoding conversion failures (Daniel Veillard),<br/> 1119 CVE-2015-8035 Fix XZ compression support loop (Daniel Veillard),<br/> 1120 CVE-2015-7942-2 Fix an error in previous Conditional section patch (Daniel Veillard),<br/> 1121 CVE-2015-7942 Another variation of overflow in Conditional sections (Daniel Veillard),<br/> 1122 CVE-2015-1819 Enforce the reader to run in constant memory (Daniel Veillard)<br/> 1123 CVE-2015-7941_2 Cleanup conditional section error handling (Daniel Veillard),<br/> 1124 CVE-2015-7941_1 Stop parsing on entities boundaries errors (Daniel Veillard),<br/> 1125 </li> 1126 1127 <li>Documentation:<br/> 1128 Correct spelling of "calling" (Alex Henrie),<br/> 1129 Fix a small error in xmllint --format description (Fabien Degomme),<br/> 1130 Avoid XSS on the search of xmlsoft.org (Daniel Veillard)<br/> 1131 </li> 1132 1133 <li>Portability:<br/> 1134 threads: use forward declarations only for glibc (Michael Heimpold),<br/> 1135 Update Win32 configure.js to search for configure.ac (Daniel Veillard)<br/> 1136 </li> 1137 1138 <li>Bug Fixes:<br/> 1139 Bug on creating new stream from entity (Daniel Veillard),<br/> 1140 Fix some loop issues embedding NEXT (Daniel Veillard),<br/> 1141 Do not print error context when there is none (Daniel Veillard),<br/> 1142 Avoid extra processing of MarkupDecl when EOF (Hugh Davenport),<br/> 1143 Fix parsing short unclosed comment uninitialized access (Daniel Veillard),<br/> 1144 Add missing Null check in xmlParseExternalEntityPrivate (Gaurav Gupta),<br/> 1145 Fix a bug in CData error handling in the push parser (Daniel Veillard),<br/> 1146 Fix a bug on name parsing at the end of current input buffer (Daniel Veillard),<br/> 1147 Fix the spurious ID already defined error (Daniel Veillard),<br/> 1148 Fix previous change to node sort order (Nick Wellnhofer),<br/> 1149 Fix a self assignment issue raised by clang (Scott Graham),<br/> 1150 Fail parsing early on if encoding conversion failed (Daniel Veillard),<br/> 1151 Do not process encoding values if the declaration if broken (Daniel Veillard),<br/> 1152 Silence clang's -Wunknown-attribute (Michael Catanzaro),<br/> 1153 xmlMemUsed is not thread-safe (Martin von Gagern),<br/> 1154 Fix support for except in nameclasses (Daniel Veillard),<br/> 1155 Fix order of root nodes (Nick Wellnhofer),<br/> 1156 Allow attributes on descendant-or-self axis (Nick Wellnhofer),<br/> 1157 Fix the fix to Windows locking (Steve Nairn),<br/> 1158 Fix timsort invariant loop re: Envisage article (Christopher Swenson),<br/> 1159 Don't add IDs in xmlSetTreeDoc (Nick Wellnhofer),<br/> 1160 Account for ID attributes in xmlSetTreeDoc (Nick Wellnhofer),<br/> 1161 Remove various unused value assignments (Philip Withnall),<br/> 1162 Fix missing entities after CVE-2014-3660 fix (Daniel Veillard),<br/> 1163 Revert "Missing initialization for the catalog module" (Daniel Veillard)<br/> 1164 </li> 1165 1166 <li>Improvements:<br/> 1167 Reuse xmlHaltParser() where it makes sense (Daniel Veillard),<br/> 1168 xmlStopParser reset errNo (Daniel Veillard),<br/> 1169 Reenable xz support by default (Daniel Veillard),<br/> 1170 Recover unescaped less-than character in HTML recovery parsing (Daniel Veillard),<br/> 1171 Allow HTML serializer to output HTML5 DOCTYPE (Shaun McCance),<br/> 1172 Regression test for bug #695699 (Nick Wellnhofer),<br/> 1173 Add a couple of XPath tests (Nick Wellnhofer),<br/> 1174 Add Python 3 rpm subpackage (Tomas Radej),<br/> 1175 libxml2-config.cmake.in: update include directories (Samuel Martin),<br/> 1176 Adding example from bugs 738805 to regression tests (Daniel Veillard)<br/> 1177 </li> 1178 1179 <li>Cleanups:<br/> 1180 </li> 1181 </ul> 1182 <h3>2.9.2: Oct 16 2014</h3> 1183 <ul> 1184 <li>Security:<br/> 1185 Fix for CVE-2014-3660 billion laugh variant (Daniel Veillard),<br/> 1186 CVE-2014-0191 Do not fetch external parameter entities (Daniel Veillard)<br/> 1187 </li> 1188 1189 <li>Bug Fixes:<br/> 1190 fix memory leak xml header encoding field with XML_PARSE_IGNORE_ENC (Bart De Schuymer),<br/> 1191 xmlmemory: handle realloc properly (Yegor Yefremov),<br/> 1192 Python generator bug raised by the const change (Daniel Veillard),<br/> 1193 Windows Critical sections not released correctly (Daniel Veillard),<br/> 1194 Parser error on repeated recursive entity expansion containing &lt; (Daniel Veillard),<br/> 1195 xpointer : fixing Null Pointers (Gaurav Gupta),<br/> 1196 Remove Unnecessary Null check in xpointer.c (Gaurav Gupta),<br/> 1197 parser bug on misformed namespace attributes (Dennis Filder),<br/> 1198 Pointer dereferenced before null check (Daniel Veillard),<br/> 1199 Leak of struct addrinfo in xmlNanoFTPConnect() (Gaurav Gupta),<br/> 1200 Possible overflow in HTMLParser.c (Daniel Veillard),<br/> 1201 python/tests/sync.py assumes Python dictionaries are ordered (John Beck),<br/> 1202 Fix Enum check and missing break (Gaurav Gupta),<br/> 1203 xmlIO: Handle error returns from dup() (Philip Withnall),<br/> 1204 Fix a problem properly saving URIs (Daniel Veillard),<br/> 1205 wrong error column in structured error when parsing attribute values (Juergen Keil),<br/> 1206 wrong error column in structured error when skipping whitespace in xml decl (Juergen Keil),<br/> 1207 no error column in structured error handler for xml schema validation errors (Juergen Keil),<br/> 1208 Couple of Missing Null checks (Gaurav Gupta),<br/> 1209 Add couple of missing Null checks (Daniel Veillard),<br/> 1210 xmlschemastypes: Fix potential array overflow (Philip Withnall),<br/> 1211 runtest: Fix a memory leak on parse failure (Philip Withnall),<br/> 1212 xmlIO: Fix an FD leak on gzdopen() failure (Philip Withnall),<br/> 1213 xmlcatalog: Fix a memory leak on quit (Philip Withnall),<br/> 1214 HTMLparser: Correctly initialise a stack allocated structure (Philip Withnall),<br/> 1215 Check for tmon in _xmlSchemaDateAdd() is incorrect (David Kilzer),<br/> 1216 Avoid Possible Null Pointer in trio.c (Gaurav Gupta),<br/> 1217 Fix processing in SAX2 in case of an allocation failure (Daniel Veillard),<br/> 1218 XML Shell command "cd" does not handle "/" at end of path (Daniel Veillard),<br/> 1219 Fix various Missing Null checks (Gaurav Gupta),<br/> 1220 Fix a potential NULL dereference (Daniel Veillard),<br/> 1221 Add a couple of misisng check in xmlRelaxNGCleanupTree (Gaurav Gupta),<br/> 1222 Add a missing argument check (Gaurav Gupta),<br/> 1223 Adding a check in case of allocation error (Gaurav Gupta),<br/> 1224 xmlSaveUri() incorrectly recomposes URIs with rootless paths (Dennis Filder),<br/> 1225 Adding some missing NULL checks (Gaurav),<br/> 1226 Fixes for xmlInitParserCtxt (Daniel Veillard),<br/> 1227 Fix regressions introduced by CVE-2014-0191 patch (Daniel Veillard),<br/> 1228 erroneously ignores a validation error if no error callback set (Daniel Veillard),<br/> 1229 xmllint was not parsing the --c14n11 flag (Srgio Batista),<br/> 1230 Avoid Possible null pointer dereference in memory debug mode (Gaurav),<br/> 1231 Avoid Double Null Check (Gaurav),<br/> 1232 Restore context size and position after XPATH_OP_ARG (Nick Wellnhofer),<br/> 1233 Fix xmlParseInNodeContext() if node is not element (Daniel Veillard),<br/> 1234 Avoid a possible NULL pointer dereference (Gaurav),<br/> 1235 Fix xmlTextWriterWriteElement when a null content is given (Daniel Veillard),<br/> 1236 Fix an typo 'onrest' in htmlScriptAttributes (Daniel Veillard),<br/> 1237 fixing a ptotential uninitialized access (Daniel Veillard),<br/> 1238 Fix an fd leak in an error case (Daniel Veillard),<br/> 1239 Missing initialization for the catalog module (Daniel Veillard),<br/> 1240 Handling of XPath function arguments in error case (Nick Wellnhofer),<br/> 1241 Fix a couple of missing NULL checks (Gaurav),<br/> 1242 Avoid a possibility of dangling encoding handler (Gaurav),<br/> 1243 Fix HTML push parser to accept HTML_PARSE_NODEFDTD (Arnold Hendriks),<br/> 1244 Fix a bug loading some compressed files (Mike Alexander),<br/> 1245 Fix XPath node comparison bug (Gaurav),<br/> 1246 Type mismatch in xmlschemas.c (Gaurav),<br/> 1247 Type mismatch in xmlschemastypes.c (Gaurav),<br/> 1248 Avoid a deadcode in catalog.c (Daniel Veillard),<br/> 1249 run close socket on Solaris, same as we do on other platforms (Denis Pauk),<br/> 1250 Fix pointer dereferenced before null check (Gaurav),<br/> 1251 Fix a potential NULL dereference in tree code (Daniel Veillard),<br/> 1252 Fix potential NULL pointer dereferences in regexp code (Gaurav),<br/> 1253 xmllint --pretty crashed without following numeric argument (Tim Galeckas),<br/> 1254 Fix XPath expressions of the form '@ns:*' (Nick Wellnhofer),<br/> 1255 Fix XPath '//' optimization with predicates (Nick Wellnhofer),<br/> 1256 Clear up a potential NULL dereference (Daniel Veillard),<br/> 1257 Fix a possible NULL dereference (Gaurav),<br/> 1258 Avoid crash if allocation fails (Daniel Veillard),<br/> 1259 Remove occasional leading space in XPath number formatting (Daniel Veillard),<br/> 1260 Fix handling of mmap errors (Daniel Veillard),<br/> 1261 Catch malloc error and exit accordingly (Daniel Veillard),<br/> 1262 missing else in xlink.c (Ami Fischman),<br/> 1263 Fix a parsing bug on non-ascii element and CR/LF usage (Daniel Veillard),<br/> 1264 Fix a regression in xmlGetDocCompressMode() (Daniel Veillard),<br/> 1265 properly quote the namespace uris written out during c14n (Aleksey Sanin),<br/> 1266 Remove premature XInclude check on URI being relative (Alexey Neyman),<br/> 1267 Fix missing break on last() function for attributes (dcb),<br/> 1268 Do not URI escape in server side includes (Romain Bondue),<br/> 1269 Fix an error in xmlCleanupParser (Alexander Pastukhov)<br/> 1270 </li> 1271 1272 <li>Documentation:<br/> 1273 typo in error messages "colon are forbidden from..." (Daniel Veillard),<br/> 1274 Fix a link to James SAX documentation old page (Daniel Veillard),<br/> 1275 Fix typos in relaxng.c (Jan Pokorn),<br/> 1276 Fix a doc typo (Daniel Veillard),<br/> 1277 Fix typos in {tree,xpath}.c (errror) (Jan Pokorn),<br/> 1278 Add limitations about encoding conversion (Daniel Veillard),<br/> 1279 Fix typos in xmlschemas{,types}.c (Jan Pokorn),<br/> 1280 Fix incorrect spelling entites->entities (Jan Pokorn),<br/> 1281 Forgot to document 2.9.1 release, regenerate docs (Daniel Veillard)<br/> 1282 </li> 1283 1284 <li>Portability:<br/> 1285 AC_CONFIG_FILES and executable bit (Roumen Petrov),<br/> 1286 remove HAVE_CONFIG_H dependency in testlimits.c (Roumen Petrov),<br/> 1287 fix some tabs mixing incompatible with python3 (Roumen Petrov),<br/> 1288 Visual Studio 14 CTP defines snprintf() (Francis Dupont),<br/> 1289 OS400: do not try to copy unexisting doc files (Patrick Monnerat),<br/> 1290 OS400: use either configure.ac or configure.in. (Patrick Monnerat),<br/> 1291 os400: make-src.sh: create physical file with target CCSID (Patrick Monnerat),<br/> 1292 OS400: Add some more C macros equivalent procedures. (Patrick Monnerat),<br/> 1293 OS400: use C macros to implement equivalent RPG support procedures. (Patrick Monnerat),<br/> 1294 OS400: implement XPath macros as procedures for ILE/RPG support. (Patrick Monnerat),<br/> 1295 OS400: include in distribution tarball. (Patrick Monnerat),<br/> 1296 OS400: Add README: compilation directives and OS/400 specific stuff. (Patrick Monnerat),<br/> 1297 OS400: Add compilation scripts. (Patrick Monnerat),<br/> 1298 OS400: ILE RPG language header files. (Patrick Monnerat),<br/> 1299 OS400: implement some macros as functions for ILE/RPG language support (that as no macros). (Patrick Monnerat),<br/> 1300 OS400: UTF8<-->EBCDIC wrappers for system and external library calls (Patrick Monnerat),<br/> 1301 OS400: Easy character transcoding support (Patrick Monnerat),<br/> 1302 OS400: iconv functions compatibility wrappers and table builder. (Patrick Monnerat),<br/> 1303 OS400: create architecture directory. Implement dlfcn emulation. (Patrick Monnerat),<br/> 1304 Fix building when configuring without xpath and xptr (Daniel Veillard),<br/> 1305 configure: Add --with-python-install-dir (Jonas Eriksson),<br/> 1306 Fix compilation with minimum and xinclude. (Nicolas Le Cam),<br/> 1307 Compile out use of xmlValidateNCName() when not available. (Nicolas Le Cam),<br/> 1308 Fix compilation with minimum and schematron. (Nicolas Le Cam),<br/> 1309 Legacy needs xmlSAX2StartElement() and xmlSAX2EndElement(). (Nicolas Le Cam),<br/> 1310 Don't use xmlValidateName() when not available. (Nicolas Le Cam),<br/> 1311 Fix a portability issue on Windows (Longstreth Jon),<br/> 1312 Various portability patches for OpenVMS (Jacob (Jouk) Jansen),<br/> 1313 Use specific macros for portability to OS/400 (Patrick Monnerat),<br/> 1314 Add macros needed for OS/400 portability (Patrick Monnerat),<br/> 1315 Portability patch for fopen on OS/400 (Patrick Monnerat),<br/> 1316 Portability fixes for OS/400 (Patrick Monnerat),<br/> 1317 Improve va_list portability (Patrick Monnerat),<br/> 1318 Portability fix (Patrick Monnerat),<br/> 1319 Portability fix (Patrick Monnerat),<br/> 1320 Generic portability fix (Patrick Monnerat),<br/> 1321 Shortening lines in headers (Patrick Monnerat),<br/> 1322 build: Use pkg-config to find liblzma in preference to AC_CHECK_LIB (Philip Withnall),<br/> 1323 build: Add @LZMA_LIBS@ to libxmls pkg-config files (Philip Withnall),<br/> 1324 fix some tabs mixing incompatible with python3 (Daniel Veillard),<br/> 1325 add additional defines checks for support "./configure --with-minimum" (Denis Pauk),<br/> 1326 Another round of fixes for older versions of Python (Arfrever Frehtes Taifersar Arahesis),<br/> 1327 python: fix drv_libxml2.py for python3 compatibility (Alexandre Rostovtsev),<br/> 1328 python: Fix compiler warnings when building python3 bindings (Armin K),<br/> 1329 Fix for compilation with python 2.6.8 (Petr Sumbera)<br/> 1330 </li> 1331 1332 <li>Improvements:<br/> 1333 win32/libxml2.def.src after rebuild in doc (Roumen Petrov),<br/> 1334 elfgcchack.h: more legacy needs xmlSAX2StartElement() and xmlSAX2EndElement() (Roumen Petrov),<br/> 1335 elfgcchack.h: add xmlXPathNodeEval and xmlXPathSetContextNode (Roumen Petrov),<br/> 1336 Provide cmake module (Samuel Martin),<br/> 1337 Fix a couple of issues raised by make dist (Daniel Veillard),<br/> 1338 Fix and add const qualifiers (Kurt Roeckx),<br/> 1339 Preparing for upcoming release of 2.9.2 (Daniel Veillard),<br/> 1340 Fix zlib and lzma libraries check via command line (Dmitriy),<br/> 1341 wrong error column in structured error when parsing end tag (Juergen Keil),<br/> 1342 doc/news.html: small update to avoid line join while generating NEWS. (Patrick Monnerat),<br/> 1343 Add methods for python3 iterator (Ron Angeles),<br/> 1344 Support element node traversal in document fragments. (Kyle VanderBeek),<br/> 1345 xmlNodeSetName: Allow setting the name to a substring of the currently set name (Tristan Van Berkom),<br/> 1346 Added macros for argument casts (Eric Zurcher),<br/> 1347 adding init calls to xml and html Read parsing entry points (Daniel Veillard),<br/> 1348 Get rid of 'REPLACEMENT CHARACTER' Unicode chars in xmlschemas.c (Jan Pokorn),<br/> 1349 Implement choice for name classes on attributes (Shaun McCance),<br/> 1350 Two small namespace tweaks (Daniel Veillard),<br/> 1351 xmllint --memory should fail on empty files (Daniel Veillard),<br/> 1352 Cast encoding name to char pointer to match arg type (Nikolay Sivov)<br/> 1353 </li> 1354 1355 <li>Cleanups:<br/> 1356 Removal of old configure.in (Daniel Veillard),<br/> 1357 Unreachable code in tree.c (Gaurav Gupta),<br/> 1358 Remove a couple of dead conditions (Gaurav Gupta),<br/> 1359 Avoid some dead code and cleanup in relaxng.c (Gaurav),<br/> 1360 Drop not needed checks (Denis Pauk),<br/> 1361 Fix a wrong test (Daniel Veillard)<br/> 1362 </li> 1363 </ul> 1364 <h3>2.9.1: Apr 19 2013</h3> 1365 <ul> 1366 <li> Features:<br/> 1367 Support for Python3 (Daniel Veillard),<br/> 1368 Add xmlXPathSetContextNode and xmlXPathNodeEval (Alex Bligh)<br/> 1369 </li> 1370 1371 <li> Documentation:<br/> 1372 Add documentation for xmllint --xpath (Daniel Veillard),<br/> 1373 Fix the URL of the SAX documentation from James (Daniel Veillard),<br/> 1374 Fix spelling of "length". (Michael Wood)<br/> 1375 </li> 1376 1377 <li> Portability:<br/> 1378 Fix python bindings with versions older than 2.7 (Daniel Veillard),<br/> 1379 rebuild docs:Makefile.am (Roumen Petrov),<br/> 1380 elfgcchack.h after rebuild in doc (Roumen Petrov),<br/> 1381 elfgcchack for buf module (Roumen Petrov),<br/> 1382 Fix a uneeded and wrong extra link parameter (Daniel Veillard),<br/> 1383 Few cleanup patches for Windows (Denis Pauk),<br/> 1384 Fix rpmbuild --nocheck (Mark Salter),<br/> 1385 Fix for win32/configure.js and WITH_THREAD_ALLOC (Daniel Richard),<br/> 1386 Fix Broken multi-arch support in xml2-config (Daniel Veillard),<br/> 1387 Fix a portability issue for GCC < 3.4.0 (Daniel Veillard),<br/> 1388 Windows build fixes (Daniel Richard),<br/> 1389 Fix a thread portability problem (Friedrich Haubensak),<br/> 1390 Downgrade autoconf requirement to 2.63 (Daniel Veillard)<br/> 1391 </li> 1392 1393 <li> Bug Fixes:<br/> 1394 Fix a linking error for python bindings (Daniel Veillard),<br/> 1395 Fix a couple of return without value (Jri Aedla),<br/> 1396 Improve the hashing functions (Daniel Franke),<br/> 1397 Improve handling of xmlStopParser() (Daniel Veillard),<br/> 1398 Remove risk of lockup in dictionary initialization (Daniel Veillard),<br/> 1399 Activate detection of encoding in external subset (Daniel Veillard),<br/> 1400 Fix an output buffer flushing conversion bug (Mikhail Titov),<br/> 1401 Fix an old bug in xmlSchemaValidateOneElement (Csaba Lszl),<br/> 1402 Fix configure cannot remove messages (Gilles Espinasse),<br/> 1403 fix schema validation in combination with xsi:nil (Daniel Veillard),<br/> 1404 xmlCtxtReadFile doesn't work with literal IPv6 URLs (Steve Wolf),<br/> 1405 Fix a few problems with setEntityLoader (Alexey Neyman),<br/> 1406 Detect excessive entities expansion upon replacement (Daniel Veillard),<br/> 1407 Fix the flushing out of raw buffers on encoding conversions (Daniel,<br/> 1408 Veillard),<br/> 1409 Fix some buffer conversion issues (Daniel Veillard),<br/> 1410 When calling xmlNodeDump make sure we grow the buffer quickly (Daniel,<br/> 1411 Veillard),<br/> 1412 Fix an error in the progressive DTD parsing code (Dan Winship),<br/> 1413 xmllint should not load DTD by default when using the reader (Daniel,<br/> 1414 Veillard),<br/> 1415 Try IBM-037 when looking for EBCDIC handlers (Petr Sumbera),<br/> 1416 Fix potential out of bound access (Daniel Veillard),<br/> 1417 Fix large parse of file from memory (Daniel Veillard),<br/> 1418 Fix a bug in the nsclean option of the parser (Daniel Veillard),<br/> 1419 Fix a regression in 2.9.0 breaking validation while streaming (Daniel,<br/> 1420 Veillard),<br/> 1421 Remove potential calls to exit() (Daniel Veillard)<br/> 1422 </li> 1423 1424 <li> Improvements:<br/> 1425 Regenerated API, and testapi, rebuild documentation (Daniel Veillard),<br/> 1426 Fix tree iterators broken by 2to3 script (Daniel Veillard),<br/> 1427 update all tests for Python3 and Python2 (Daniel Veillard),<br/> 1428 A few more fixes for python 3 affecting libxml2.py (Daniel Veillard),<br/> 1429 Fix compilation on Python3 (Daniel Veillard),<br/> 1430 Converting apibuild.py to python3 (Daniel Veillard),<br/> 1431 First pass at starting porting to python3 (Daniel Veillard),<br/> 1432 updated configure.in for python3 (Daniel Veillard),<br/> 1433 Add support for xpathRegisterVariable in Python (Shaun McCance),<br/> 1434 Added a regression tests from bug 694228 data (Daniel Veillard),<br/> 1435 Cache presence of '<' in entities content (Daniel Veillard),<br/> 1436 Avoid extra processing on entities (Daniel Veillard),<br/> 1437 Python binding for xmlRegisterInputCallback (Alexey Neyman),<br/> 1438 Python bindings: DOM casts everything to xmlNode (Alexey Neyman),<br/> 1439 Define LIBXML_THREAD_ALLOC_ENABLED via xmlversion.h (Tim Starling),<br/> 1440 Adding streaming validation to runtest checks (Daniel Veillard),<br/> 1441 Add a --pushsmall option to xmllint (Daniel Veillard)<br/> 1442 </li> 1443 1444 <li> Cleanups:<br/> 1445 Switched comment in file to UTF-8 encoding (Daniel Veillard),<br/> 1446 Extend gitignore (Daniel Veillard),<br/> 1447 Silent the new python test on input (Alexey Neyman),<br/> 1448 Cleanup of a duplicate test (Daniel Veillard),<br/> 1449 Cleanup on duplicate test expressions (Daniel Veillard),<br/> 1450 Fix compiler warning after 153cf15905cf4ec080612ada6703757d10caba1e (Patrick,<br/> 1451 Gansterer),<br/> 1452 Spec cleanups and a fix for multiarch support (Daniel Veillard),<br/> 1453 Silence a clang warning (Daniel Veillard),<br/> 1454 Cleanup the Copyright to be pure MIT Licence wording (Daniel Veillard),<br/> 1455 rand_seed should be static in dict.c (Wouter Van Rooy),<br/> 1456 Fix typos in parser comments (Jan Pokorn)<br/> 1457 </li> 1458 </ul> 1459 <h3>2.9.0: Sep 11 2012</h3> 1460 <ul> 1461 <li> Features:<br/> 1462 A few new API entry points,<br/> 1463 More resilient push parser mode,<br/> 1464 A lot of portability improvement,<br/> 1465 Faster XPath evaluation<br/> 1466 </li> 1467 1468 <li> Documentation:<br/> 1469 xml2-config.1 markup error (Christian Weisgerber),<br/> 1470 libxml(3) manpage typo fix (John Bradshaw),<br/> 1471 More cleanups to the documentation part of libxml2 (Daniel Richard G)<br/> 1472 </li> 1473 1474 <li> Portability:<br/> 1475 Bug 676544 - fails to build with --without-sax1 (Akira TAGOH),<br/> 1476 fix builds not having stdint.h (Rob Richards),<br/> 1477 GetProcAddressA is available only on WinCE (Daniel Veillard),<br/> 1478 More updates and cleanups on autotools and Makefiles (Daniel Richard G),<br/> 1479 More changes for Win32 compilation (Eric Zurcher),<br/> 1480 Basic changes for Win32 builds of release 2.9.0: compile buf.c (Eric Zurcher),<br/> 1481 Bundles all generated files for python into the distribution (Daniel Richard G),<br/> 1482 Fix compiler warnings of wincecompat.c (Patrick Gansterer),<br/> 1483 Fix non __GNUC__ build (Patrick Gansterer),<br/> 1484 Fix windows unicode build (Patrick Gansterer),<br/> 1485 clean redefinition of {v}snprintf in C-source (Roumen Petrov),<br/> 1486 use xmlBuf... if DEBUG_INPUT is defined (Roumen Petrov),<br/> 1487 fix runtests to use pthreads support for various Unix platforms (Daniel Richard G),<br/> 1488 Various "make distcheck" and portability fixups 2nd part (Daniel Richard G),<br/> 1489 Various "make distcheck" and portability fixups (Daniel Richard G),<br/> 1490 Fix compilation on older Visual Studio (Daniel Veillard)<br/> 1491 </li> 1492 1493 <li> Bug Fixes:<br/> 1494 Change the XPath code to percolate allocation errors (Daniel Veillard),<br/> 1495 Fix reuse of xmlInitParser (Daniel Veillard),<br/> 1496 Fix potential crash on entities errors (Daniel Veillard),<br/> 1497 initialize var (Rob Richards),<br/> 1498 Fix the XPath arity check to also check the XPath stack limits (Daniel Veillard),<br/> 1499 Fix problem with specific and generic error handlers (Pietro Cerutti),<br/> 1500 Avoid a potential infinite recursion (Daniel Veillard),<br/> 1501 Fix an XSD error when generating internal automata (Daniel Veillard),<br/> 1502 Patch for xinclude of text using multibyte characters (Vitaly Ostanin),<br/> 1503 Fix a segfault on XSD validation on pattern error (Daniel Veillard),<br/> 1504 Fix missing xmlsave.h module which was ignored in recent builds (Daniel Veillard),<br/> 1505 Add a missing element check (Daniel Veillard),<br/> 1506 Adding various checks on node type though the API (Daniel Veillard),<br/> 1507 Namespace nodes can't be unlinked with xmlUnlinkNode (Daniel Veillard),<br/> 1508 Fix make dist to include new private header files (Daniel Veillard),<br/> 1509 More fixups on the push parser behaviour (Daniel Veillard),<br/> 1510 Strengthen behaviour of the push parser in problematic situations (Daniel Veillard),<br/> 1511 Enforce XML_PARSER_EOF state handling through the parser (Daniel Veillard),<br/> 1512 Fixup limits parser (Daniel Veillard),<br/> 1513 Do not fetch external parsed entities (Daniel Veillard),<br/> 1514 Fix an error in previous commit (Aron Xu),<br/> 1515 Fix entities local buffers size problems (Daniel Veillard),<br/> 1516 Fix parser local buffers size problems (Daniel Veillard),<br/> 1517 Fix a failure to report xmlreader parsing failures (Daniel Veillard)<br/> 1518 </li> 1519 1520 <li> Improvements:<br/> 1521 Keep libxml2.syms when running "make distclean" (Daniel Veillard),<br/> 1522 Allow to set the quoting character of an xmlWriter (Csaba Raduly),<br/> 1523 Keep non-significant blanks node in HTML parser (Daniel Veillard),<br/> 1524 Add a forbidden variable error number and message to XPath (Daniel Veillard),<br/> 1525 Support long path names on WNT (Michael Stahl),<br/> 1526 Improve HTML escaping of attribute on output (Daniel Veillard),<br/> 1527 Handle ICU_LIBS as LIBADD, not LDFLAGS to prevent linking errors (Arfrever Frehtes Taifersar Arahesis),<br/> 1528 Switching XPath node sorting to Timsort (Vojtech Fried),<br/> 1529 Optimizing '//' in XPath expressions (Nick Wellnhofer),<br/> 1530 Expose xmlBufShrink in the public tree API (Daniel Veillard),<br/> 1531 Visible HTML elements close the head tag (Conrad Irwin),<br/> 1532 Fix file and line report for XSD SAX and reader streaming validation (Daniel Veillard),<br/> 1533 Fix const qualifyer to definition of xmlBufferDetach (Daniel Veillard),<br/> 1534 minimize use of HAVE_CONFIG_H (Roumen Petrov),<br/> 1535 fixup regression in Various "make distcheck" and portability fixups (Roumen Petrov),<br/> 1536 Add support for big line numbers in error reporting (Daniel Veillard),<br/> 1537 Avoid using xmlBuffer for serialization (Daniel Veillard),<br/> 1538 Improve compatibility between xmlBuf and xmlBuffer (Daniel Veillard),<br/> 1539 Provide new accessors for xmlOutputBuffer (Daniel Veillard),<br/> 1540 Improvements for old buffer compatibility (Daniel Veillard),<br/> 1541 Expand the limit test program (Daniel Veillard),<br/> 1542 Improve error reporting on parser errors (Daniel Veillard),<br/> 1543 Implement some default limits in the XPath module (Daniel Veillard),<br/> 1544 Introduce some default parser limits (Daniel Veillard),<br/> 1545 Cleanups and new limit APIs for dictionaries (Daniel Veillard),<br/> 1546 Fixup for buf.c (Daniel Veillard),<br/> 1547 Cleanup URI module memory allocation code (Daniel Veillard),<br/> 1548 Extend testlimits (Daniel Veillard),<br/> 1549 More avoid quadratic behaviour (Daniel Veillard),<br/> 1550 Impose a reasonable limit on PI size (Daniel Veillard),<br/> 1551 first version of testlimits new test (Daniel Veillard),<br/> 1552 Avoid quadratic behaviour in some push parsing cases (Daniel Veillard),<br/> 1553 Impose a reasonable limit on comment size (Daniel Veillard),<br/> 1554 Impose a reasonable limit on attribute size (Daniel Veillard),<br/> 1555 Harden the buffer code and make it more compatible (Daniel Veillard),<br/> 1556 More cleanups for input/buffers code (Daniel Veillard),<br/> 1557 Cleanup function xmlBufResetInput(),<br/> to set input from Buffer (Daniel Veillard) 1558 Swicth the test program for characters to new input buffers (Daniel Veillard),<br/> 1559 Convert the HTML tree module to the new buffers (Daniel Veillard),<br/> 1560 Convert of the HTML parser to new input buffers (Daniel Veillard),<br/> 1561 Convert the writer to new output buffer and save APIs (Daniel Veillard),<br/> 1562 Convert XMLReader to the new input buffers (Daniel Veillard),<br/> 1563 New saving functions using xmlBuf and conversion (Daniel Veillard),<br/> 1564 Provide new xmlBuf based saving functions (Daniel Veillard),<br/> 1565 Convert XInclude to the new input buffers (Daniel Veillard),<br/> 1566 Convert catalog code to the new input buffers (Daniel Veillard),<br/> 1567 Convert C14N to the new Input buffer (Daniel Veillard),<br/> 1568 Convert xmlIO.c to the new input and output buffers (Daniel Veillard),<br/> 1569 Convert XML parser to the new input buffers (Daniel Veillard),<br/> 1570 Incompatible change to the Input and Output buffers (Daniel Veillard),<br/> 1571 Adding new encoding function to deal with the new structures (Daniel Veillard),<br/> 1572 Convert XPath to xmlBuf (Daniel Veillard),<br/> 1573 Adding a new buf module for buffers (Daniel Veillard),<br/> 1574 Memory error within SAX2 reuse common framework (Daniel Veillard),<br/> 1575 Fix xmllint --xpath node initialization (Daniel Veillard)<br/> 1576 </li> 1577 1578 <li> Cleanups:<br/> 1579 Various cleanups to avoid compiler warnings (Daniel Veillard),<br/> 1580 Big space and tab cleanup (Daniel Veillard),<br/> 1581 Followup to LibXML2 docs/examples cleanup patch (Daniel Veillard),<br/> 1582 Second round of cleanups for LibXML2 docs/examples (Daniel Richard),<br/> 1583 Remove all .cvsignore as they are not used anymore (Daniel Veillard),<br/> 1584 Fix a Timsort function helper comment (Daniel Veillard),<br/> 1585 Small cleanup for valgrind target (Daniel Veillard),<br/> 1586 Patch for portability of latin characters in C files (Daniel Veillard),<br/> 1587 Cleanup some of the parser code (Daniel Veillard),<br/> 1588 Fix a variable name in comment (Daniel Veillard),<br/> 1589 Regenerated testapi.c (Daniel Veillard),<br/> 1590 Regenerating docs and API files (Daniel Veillard),<br/> 1591 Small cleanup of unused variables in test (Daniel Veillard),<br/> 1592 Expand .gitignore with more files (Daniel Veillard)<br/> 1593 </li> 1594 </ul> 1595 <h3>2.8.0: May 23 2012</h3> 1596 <ul> 1597 <li>Features: 1598 add lzma compression support (Anders F Bjorklund) 1599 </li> 1600 1601 <li>Documentation: 1602 xmlcatalog: Add uri and delegateURI to possible add types in man page. (Ville Skytt), 1603 Update README.tests (Daniel Veillard), 1604 URI handling code is not OOM resilient (Daniel Veillard), 1605 Fix an error in comment (Daniel Veillard), 1606 Fixed bug #617016 (Daniel Mustieles), 1607 Fixed two typos in the README document (Daniel Neel), 1608 add generated html files (Anders F Bjorklund), 1609 Clarify the need to use xmlFreeNode after xmlUnlinkNode (Daniel Veillard), 1610 Improve documentation a bit (Daniel Veillard), 1611 Updated URL for lxml python bindings (Daniel Veillard) 1612 </li> 1613 1614 <li>Portability: 1615 Restore code for Windows compilation (Daniel Veillard), 1616 Remove git error message during configure (Christian Dywan), 1617 xmllint: Build fix for endTimer if !defined(HAVE_GETTIMEOFDAY) (Patrick R. Gansterer), 1618 remove a bashism in confgure.in (John Hein), 1619 undef ERROR if already defined (Patrick R. Gansterer), 1620 Fix library problems with mingw-w64 (Michael Cronenworth), 1621 fix windows build. ifdef addition from bug 666491 makes no sense (Rob Richards), 1622 prefer native threads on win32 (Sam Thursfield), 1623 Allow to compile with Visual Studio 2010 (Thomas Lemm), 1624 Fix mingw's snprintf configure check (Andoni Morales), 1625 fixed a 64bit big endian issue (Marcus Meissner), 1626 Fix portability failure if netdb.h lacks NO_ADDRESS (Daniel Veillard), 1627 Fix windows build from lzma addition (Rob Richards), 1628 autogen: Only check for libtoolize (Colin Walters), 1629 Fix the Windows build files (Patrick von Reth), 1630 634846 Remove a linking option breaking Windows VC10 (Daniel Veillard), 1631 599241 fix an initialization problem on Win64 (Andrew W. Nosenko), 1632 fix win build (Rob Richards) 1633 </li> 1634 1635 <li>Bug fixes: 1636 Part for rand_r checking missing (Daniel Veillard), 1637 Cleanup on randomization (Daniel Veillard), 1638 Fix undefined reference in python module (Pacho Ramos), 1639 Fix a race in xmlNewInputStream (Daniel Veillard), 1640 Fix weird streaming RelaxNG errors (Noam), 1641 Fix various bugs in new code raised by the API checking (Daniel Veillard), 1642 Fix various problems with "make dist" (Daniel Veillard), 1643 Fix a memory leak in the xzlib code (Daniel Veillard), 1644 HTML parser error with <noscript> in the <head> (Denis Pauk), 1645 XSD: optional element in complex type extension (Remi Gacogne), 1646 Fix html serialization error and htmlSetMetaEncoding() (Daniel Veillard), 1647 Fix a wrong return value in previous patch (Daniel Veillard), 1648 Fix an uninitialized variable use (Daniel Veillard), 1649 Fix a compilation problem with --minimum (Brandon Slack), 1650 Remove redundant and ungarded include of resolv.h (Daniel Veillard), 1651 xinclude with parse="text" does not use the entity loader (Shaun McCance), 1652 Allow to parse 1 byte HTML files (Denis Pauk), 1653 Patch that fixes the skipping of the HTML_PARSE_NOIMPLIED flag (Martin Schrder), 1654 Avoid memory leak if xmlParserInputBufferCreateIO fails (Lin Yi-Li), 1655 Prevent an infinite loop when dumping a node with encoding problems (Timothy Elliott), 1656 xmlParseNodeInContext problems with an empty document (Tim Elliott), 1657 HTML element position is not detected propperly (Pavel Andrejs), 1658 Fix an off by one pointer access (Jri Aedla), 1659 Try to fix a problem with entities in SAX mode (Daniel Veillard), 1660 Fix a crash with xmllint --path on empty results (Daniel Veillard), 1661 Fixed bug #667946 (Daniel Mustieles), 1662 Fix a logic error in Schemas Component Constraints (Ryan Sleevi), 1663 Fix a wrong enum type use in Schemas Types (Nico Weber), 1664 Fix SAX2 builder in case of undefined attributes namespace (Daniel Veillard), 1665 Fix SAX2 builder in case of undefined element namespaces (Daniel Veillard), 1666 fix reference to STDOUT_FILENO on MSVC (Tay Ray Chuan), 1667 fix a pair of possible out of array char references (Daniel Veillard), 1668 Fix an allocation error when copying entities (Daniel Veillard), 1669 Make sure the parser returns when getting a Stop order (Chris Evans), 1670 Fix some potential problems on reallocation failures(parser.c) (Xia Xinfeng), 1671 Fix a schema type duration comparison overflow (Daniel Veillard), 1672 Fix an unimplemented part in RNG value validation (Daniel Veillard), 1673 Fix missing error status in XPath evaluation (Daniel Veillard), 1674 Hardening of XPath evaluation (Daniel Veillard), 1675 Fix an off by one error in encoding (Daniel Veillard), 1676 Fix RELAX NG include bug #655288 (Shaun McCance), 1677 Fix XSD validation bug #630130 (Toyoda Eizi), 1678 Fix some potential problems on reallocation failures (Chris Evans), 1679 __xmlRaiseError: fix use of the structured callback channel (Dmitry V. Levin), 1680 __xmlRaiseError: fix the structured callback channel's data initialization (Dmitry V. Levin), 1681 Fix memory corruption when xmlParseBalancedChunkMemoryInternal is called from xmlParseBalancedChunk (Rob Richards), 1682 Small fix for previous commit (Daniel Veillard), 1683 Fix a potential freeing error in XPath (Daniel Veillard), 1684 Fix a potential memory access error (Daniel Veillard), 1685 Reactivate the shared library versionning script (Daniel Veillard) 1686 </li> 1687 1688 <li>Improvements: 1689 use mingw C99 compatible functions {v}snprintf instead those from MSVC runtime (Roumen Petrov), 1690 New symbols added for the next release (Daniel Veillard), 1691 xmlTextReader bails too quickly on error (Andy Lutomirski), 1692 Use a hybrid allocation scheme in xmlNodeSetContent (Conrad Irwin), 1693 Use buffers when constructing string node lists. (Conrad Irwin), 1694 Add HTML parser support for HTML5 meta charset encoding declaration (Denis Pauk), 1695 wrong message for double hyphen in comment XML error (Bryan Henderson), 1696 Fix "make tst" to grab lzma lib too (Daniel Veillard), 1697 Add "whereis" command to xmllint shell (Ryan), 1698 Improve xmllint shell (Ryan), 1699 add function xmlTextReaderRelaxNGValidateCtxt() (Noam Postavsky), 1700 Add --system support to autogen.sh (Daniel Veillard), 1701 Add hash randomization to hash and dict structures (Daniel Veillard), 1702 included xzlib in dist (Anders F Bjorklund), 1703 move xz/lzma helpers to separate included files (Anders F Bjorklund), 1704 add generated devhelp files (Anders F Bjorklund), 1705 add XML_WITH_LZMA to api (Anders F Bjorklund), 1706 autogen.sh: Honor NOCONFIGURE environment variable (Colin Walters), 1707 Improve the error report on undefined REFs (Daniel Veillard), 1708 Add exception for new W3C PI xml-model (Daniel Veillard), 1709 Add options to ignore the internal encoding (Daniel Veillard), 1710 testapi: use the right type for the check (Stefan Kost), 1711 various: handle return values of write calls (Stefan Kost), 1712 testWriter: xmlTextWriterWriteFormatElement wants an int instead of a long int (Stefan Kost), 1713 runxmlconf: update to latest testsuite version (Stefan Kost), 1714 configure: add -Wno-long-long to CFLAGS (Stefan Kost), 1715 configure: support silent automake rules if possible (Stefan Kost), 1716 xmlmemory: add a cast as size_t has no portable printf modifier (Stefan Kost), 1717 __xmlRaiseError: remove redundant schannel initialization (Dmitry V. Levin), 1718 __xmlRaiseError: do cheap code check early (Dmitry V. Levin) 1719 </li> 1720 1721 <li>Cleanups: 1722 Cleanups before 2.8.0-rc2 (Daniel Veillard), 1723 Avoid an extra operation (Daniel Veillard), 1724 Remove vestigial de-ANSI-fication support. (Javier Jardn), 1725 autogen.sh: Fix typo (Javier Jardn), 1726 Do not use unsigned but unsigned int (Daniel Veillard), 1727 Remove two references to u_short (Daniel Veillard), 1728 Fix -Wempty-body warning from clang (Nico Weber), 1729 Cleanups of lzma support (Daniel Veillard), 1730 Augment the list of ignored files (Daniel Veillard), 1731 python: remove unused variable (Stefan Kost), 1732 python: flag two unused args (Stefan Kost), 1733 configure: acconfig.h is deprecated since autoconf-2.50 (Stefan Kost), 1734 xpath: remove unused variable (Stefan Kost) 1735 </li> 1736 </ul> 1737 <h3>2.7.8: Nov 4 2010</h3> 1738 <ul> 1739 <li> Features: 1740 480323 add code to plug in ICU converters by default (Giuseppe Iuculano), 1741 Add xmlSaveOption XML_SAVE_WSNONSIG (Adam Spragg) 1742 </li> 1743 <li> Documentation: 1744 Fix devhelp documentation installation (Mike Hommey), 1745 Fix web site encoding problems (Daniel Veillard), 1746 Fix a couple of typo in HTML parser error messages (Michael Day), 1747 Forgot to update the news page for 0.7.7 (Daniel Veillard) 1748 </li> 1749 <li> Portability: 1750 607273 Fix python detection on MSys/Windows (LRN), 1751 614087 Fix Socket API usage to allow Windows64 compilation (Ozkan Sezer), 1752 Fix compilation with Clang (Koop Mast), 1753 Fix Win32 build (Rob Richards) 1754 </li> 1755 <li> Bug Fixes: 1756 595789 fix a remaining potential Solaris problem (Daniel Veillard), 1757 617468 fix progressive HTML parsing with style using "'" (Denis Pauk), 1758 616478 Fix xmllint shell write command (Gwenn Kahz), 1759 614005 Possible erroneous HTML parsing on unterminated script (Pierre Belzile), 1760 627987 Fix XSD IDC errors in imported schemas (Jim Panetta), 1761 629325 XPath rounding errors first cleanup (Phil Shafer), 1762 630140 fix iso995x encoding error (Daniel Veillard), 1763 make sure htmlCtxtReset do reset the disableSAX field (Daniel Veillard), 1764 Fix a change of semantic on XPath preceding and following axis (Daniel Veillard), 1765 Fix a potential segfault due to weak symbols on pthreads (Mike Hommey), 1766 Fix a leak in XPath compilation (Daniel Veillard), 1767 Fix the semantic of XPath axis for namespace/attribute context nodes (Daniel Veillard), 1768 Avoid a descriptor leak in catalog loading code (Carlo Bramini), 1769 Fix a small bug in XPath evaluation code (Marius Wachtler), 1770 Fix handling of XML-1.0 XML namespace declaration (Daniel Veillard), 1771 Fix errors in XSD double validation check (Csaba Raduly), 1772 Fix handling of apos in URIs (Daniel Veillard), 1773 xmlTextReaderReadOuterXml should handle DTD (Rob Richards), 1774 Autogen.sh needs to create m4 directory (Rob Richards) 1775 </li> 1776 <li> Improvements: 1777 606592 update language ID parser to RFC 5646 (Daniel Veillard), 1778 Sort python generated stubs (Mike Hommey), 1779 Add an HTML parser option to avoid a default doctype (Daniel Veillard) 1780 </li> 1781 <li> Cleanups: 1782 618831 don't ship generated files in git (Adrian Bunk), 1783 Switch from the obsolete mkinstalldirs to AC_PROG_MKDIR_P (Adrian Bunk), 1784 Various cleanups on encoding handling (Daniel Veillard), 1785 Fix xmllint to use format=1 for default formatting (Adam Spragg), 1786 Force _xmlSaveCtxt.format to be 0 or 1 (Adam Spragg), 1787 Cleanup encoding pointer comparison (Nikolay Sivov), 1788 Small code cleanup on previous patch (Daniel Veillard) 1789 </li> 1790 </ul> 1791 <h3>2.7.7: Mar 15 2010</h3> 1792 <ul> 1793 <li> Improvements: 1794 Adding a --xpath option to xmllint (Daniel Veillard), 1795 Make HTML parser non-recursive (Eugene Pimenov) 1796 </li> 1797 <li> Portability: 1798 relaxng.c: cast to allow compilation with sun studio 11 (Ben Walton), 1799 Fix build failure on Sparc solaris (Roumen Petrov), 1800 use autoreconf in autogen.sh (Daniel Veillard), 1801 Fix build with mingw (Roumen Petrov), 1802 Upgrade some of the configure and autogen (Daniel Veillard), 1803 Fix relaxNG tests in runtest for Windows runtest.c: initialize ret (Rob Richards), 1804 Fix a const warning in xmlNodeSetBase (Martin Trappel), 1805 Fix python generator to not use deprecated xmllib (Daniel Veillard), 1806 Update some automake files (Daniel Veillard), 1807 598785 Fix nanohttp on Windows (spadix) 1808 </li> 1809 <li> Bug Fixes: 1810 libxml violates the zlib interface and crashes (Mark Adler), 1811 Fix broken escape behaviour in regexp ranges (Daniel Veillard), 1812 Fix missing win32 libraries in libxml-2.0.pc (Volker Grabsch), 1813 Fix detection of python linker flags (Daniel Macks), 1814 fix build error in libxml2/python (Paul Smith), 1815 ChunkParser: Incorrect decoding of small xml files (Raul Hudea), 1816 htmlCheckEncoding doesn't update input-end after shrink (Eugene Pimenov), 1817 Fix a missing #ifdef (Daniel Veillard), 1818 Fix encoding selection for xmlParseInNodeContext (Daniel Veillard), 1819 xmlPreviousElementSibling mistake (Franois Delyon), 1820 608773 add a missing check in xmlGROW (Daniel Veillard), 1821 Fix xmlParseInNodeContext for HTML content (Daniel Veillard), 1822 Fix lost namespace when copying node * tree.c: reconcile namespace if not found (Rob Richards), 1823 Fix some missing commas in HTML element lists (Eugene Pimenov), 1824 Correct variable type to unsigned (Nikolay Sivov), 1825 Recognize ID attribute in HTML without DOCTYPE (Daniel Veillard), 1826 Fix memory leak in xmlXPathEvalExpression() (Martin), 1827 Fix an init bug in global.c (Kai Henning), 1828 Fix xmlNodeSetBase() comment (Daniel Veillard), 1829 Fix broken escape behaviour in regexp ranges (Daniel Veillard), 1830 Don't give default HTML boolean attribute values in parser (Daniel Veillard), 1831 xmlCtxtResetLastError should reset ctxt-errNo (Daniel Veillard) 1832 </li> 1833 <li> Cleanups: 1834 Cleanup a couple of weirdness in HTML parser (Eugene Pimenov) 1835 </li> 1836 </ul> 1837 <h3>2.7.6: Oct 6 2009</h3> 1838 <ul> 1839 <li> Bug Fixes: 1840 Restore thread support in default configuration (Andrew W. Nosenko), 1841 URI with no path parsing problem (Daniel Veillard), 1842 Minor patch for conditional defines in threads.c (Eric Zurcher) 1843 </li> 1844 </ul> 1845 <h3>2.7.5: Sep 24 2009</h3> 1846 <ul> 1847 <li> Bug Fixes: 1848 Restore behavior of --with-threads without argument (Andrew W. Nosenko), 1849 Fix memory leak when doc is NULL (Rob Richards), 1850 595792 fixing a RelaxNG bug introduced in 2.7.4 (Daniel Veillard), 1851 Fix a Relaxng bug raised by libvirt test suite (Daniel Veillard), 1852 Fix a parsing problem with little data at startup (Daniel Veillard), 1853 link python module with python library (Frederic Crozat), 1854 594874 Forgot an fclose in xmllint (Daniel Veillard) 1855 </li> 1856 <li> Cleanup: 1857 Adding symbols.xml to EXTRA_DIST (Daniel Veillard) 1858 </li> 1859 </ul> 1860 <h3>2.7.4: Sep 10 2009</h3> 1861 <ul> 1862 <li>Improvements: 1863 Switch to GIT (GNOME), 1864 Add symbol versioning to libxml2 shared libs (Daniel Veillard) 1865 </li> 1866 <li>Portability: 1867 593857 try to work around thread pbm MinGW 4.4 (Daniel Veillard), 1868 594250 rename ATTRIBUTE_ALLOC_SIZE to avoid clashes (Daniel Veillard), 1869 Fix Windows build * relaxng.c: fix windows build (Rob Richards), 1870 Fix the globals.h to use XMLPUBFUN (Paul Smith), 1871 Problem with extern extern in header (Daniel Veillard), 1872 Add -lnetwork for compiling on Haiku (Scott McCreary), 1873 Runtest portability patch for Solaris (Tim Rice), 1874 Small patch to accomodate the Haiku OS (Scott McCreary), 1875 584605 package VxWorks folder in the distribution (Daniel Veillard), 1876 574017 Realloc too expensive on most platform (Daniel Veillard), 1877 Fix windows build (Rob Richards), 1878 545579 doesn't compile without schema support (Daniel Veillard), 1879 xmllint use xmlGetNodePath when not compiled in (Daniel Veillard), 1880 Try to avoid __imp__xmlFree link trouble on msys (Daniel Veillard), 1881 Allow to select the threading system on Windows (LRN), 1882 Fix Solaris binary links, cleanups (Daniel Veillard), 1883 Bug 571059 MSVC doesn't work with the bakefile (Intron), 1884 fix ATTRIBUTE_PRINTF header clash (Belgabor and Mike Hommey), 1885 fixes for Borland/CodeGear/Embarcadero compilers (Eric Zurcher) 1886 </li> 1887 <li>Documentation: 1888 544910 typo: "renciliateNs" (Leonid Evdokimov), 1889 Add VxWorks to list of OSes (Daniel Veillard), 1890 Regenerate the documentation and update for git (Daniel Veillard), 1891 560524 xmlTextReaderLocalName description (Daniel Veillard), 1892 Added sponsoring by AOE media for the server (Daniel Veillard), 1893 updated URLs for GNOME (Vincent Lefevre), 1894 more warnings about xmlCleanupThreads and xmlCleanupParser (Daniel Veillard) 1895 </li> 1896 <li>Bug fixes: 1897 594514 memory leaks - duplicate initialization (MOD), 1898 Wrong block opening in htmlNodeDumpOutputInternal (Daniel Veillard), 1899 492317 Fix Relax-NG validation problems (Daniel Veillard), 1900 558452 fight with reg test and error report (Daniel Veillard), 1901 558452 RNG compilation of optional multiple child (Daniel Veillard), 1902 579746 XSD validation not correct / nilable groups (Daniel Veillard), 1903 502960 provide namespace stack when parsing entity (Daniel Veillard), 1904 566012 part 2 fix regresion tests and push mode (Daniel Veillard), 1905 566012 autodetected encoding and encoding conflict (Daniel Veillard), 1906 584220 xpointer(/) and xinclude problems (Daniel Veillard), 1907 587663 Incorrect Attribute-Value Normalization (Daniel Veillard), 1908 444994 HTML chunked failure for attribute with <> (Daniel Veillard), 1909 Fix end of buffer char being split in XML parser (Daniel Veillard), 1910 Non ASCII character may be split at buffer end (Adiel Mittmann), 1911 440226 Add xmlXIncludeProcessTreeFlagsData API (Stefan Behnel), 1912 572129 speed up parsing of large HTML text nodes (Markus Kull), 1913 Fix HTML parsing with 0 character in CDATA (Daniel Veillard), 1914 Fix SetGenericErrorFunc and SetStructured clash (Wang Lam), 1915 566012 Incomplete EBCDIC parsing support (Martin Kogler), 1916 541335 HTML avoid creating 2 head or 2 body element (Daniel Veillard), 1917 541237 error correcting missing end tags in HTML (Daniel Veillard), 1918 583439 missing line numbers in push mode (Daniel Veillard), 1919 587867 xmllint --html --xmlout serializing as HTML (Daniel Veillard), 1920 559501 avoid select and use poll for nanohttp (Raphael Prevost), 1921 559410 - Regexp bug on (...)? constructs (Daniel Veillard), 1922 Fix a small problem on previous HTML parser patch (Daniel Veillard), 1923 592430 - HTML parser runs into endless loop (Daniel Veillard), 1924 447899 potential double free in xmlFreeTextReader (Daniel Veillard), 1925 446613 small validation bug mixed content with NS (Daniel Veillard), 1926 Fix the problem of revalidating a doc with RNG (Daniel Veillard), 1927 Fix xmlKeepBlanksDefault to not break indent (Nick Wellnhofer), 1928 512131 refs from externalRef part need to be added (Daniel Veillard), 1929 512131 crash in xmlRelaxNGValidateFullElement (Daniel Veillard), 1930 588441 allow '.' in HTML Names even if invalid (Daniel Veillard), 1931 582913 Fix htmlSetMetaEncoding() to be nicer (Daniel Veillard), 1932 579317 Try to find the HTML encoding information (Daniel Veillard), 1933 575875 don't output charset=html (Daniel Veillard), 1934 571271 fix semantic of xsd:all with minOccurs=0 (Daniel Veillard), 1935 570702 fix a bug in regexp determinism checking (Daniel Veillard), 1936 567619 xmlValidateNotationUse missing param test (Daniel Veillard), 1937 574393 utf-8 filename magic for compressed files (Hans Breuer), 1938 Fix a couple of problems in the parser (Daniel Veillard), 1939 585505 Document ids and refs populated by XSD (Wayne Jensen), 1940 582906 XSD validating multiple imports of the same schema (Jason Childs), 1941 Bug 582887 problems validating complex schemas (Jason Childs), 1942 Bug 579729 fix XSD schemas parsing crash (Miroslav Bajtos), 1943 576368 htmlChunkParser with special attributes (Jiri Netolicky), 1944 Bug 565747 relax anyURI data character checking (Vincent Lefevre), 1945 Preserve attributes of include start on tree copy (Petr Pajas), 1946 Skip silently unrecognized XPointer schemes (Jakub Wilk), 1947 Fix leak on SAX1, xmllint --sax1 option and debug (Daniel Veillard), 1948 potential NULL dereference on non-glibc (Jim Meyering), 1949 Fix an XSD validation crash (Daniel Veillard), 1950 Fix a regression in streaming entities support (Daniel Veillard), 1951 Fix a couple of ABI issues with C14N 1.1 (Aleksey Sanin), 1952 Aleksey Sanin support for c14n 1.1 (Aleksey Sanin), 1953 reader bug fix with entities (Daniel Veillard), 1954 use options from current parser ctxt for external entities (Rob Richards), 1955 581612 use %s to printf strings (Christian Persch), 1956 584605 change the threading initialization sequence (Igor Novoseltsev), 1957 580705 keep line numbers in HTML parser (Aaron Patterson), 1958 581803 broken HTML table attributes init (Roland Steiner), 1959 do not set error code in xmlNsWarn (Rob Richards), 1960 564217 fix structured error handling problems, 1961 reuse options from current parser for entities (Rob Richards), 1962 xmlXPathRegisterNs should not allow enpty prefixes (Daniel Veillard), 1963 add a missing check in xmlAddSibling (Kris Breuker), 1964 avoid leaks on errors (Jinmei Tatuya) 1965 </li> 1966 <li>Cleanup: 1967 Chasing dead assignments reported by clang-scan (Daniel Veillard), 1968 A few more safety cleanup raised by scan (Daniel Veillard), 1969 Fixing assorted potential problems raised by scan (Daniel Veillard), 1970 Potential uninitialized arguments raised by scan (Daniel Veillard), 1971 Fix a bunch of scan 'dead increments' and cleanup (Daniel Veillard), 1972 Remove a pedantic warning (Daniel Veillard), 1973 555833 always use rm -f in uninstall-local (Daniel Veillard), 1974 542394 xmlRegisterOutputCallbacks MAX_INPUT_CALLBACK (Daniel Veillard), 1975 Autoregenerate libxml2.syms automated checkings (Daniel Veillard), 1976 Make xmlRecoverDoc const (Martin Trappel) (Daniel Veillard), 1977 Both args of xmlStrcasestr are const (Daniel Veillard), 1978 hide the nbParse* variables used for debugging (Mike Hommey), 1979 570806 changed include of config.h (William M. Brack), 1980 cleanups and error reports when xmlTextWriterVSprintf fails (Jinmei Tatuya) 1981 </li> 1982 </ul> 1983 <h3>2.7.3: Jan 18 2009</h3> 1984 <ul> 1985 <li>Build fix: fix build when HTML support is not included.</li> 1986 <li>Bug fixes: avoid memory overflow in gigantic text nodes, 1987 indentation problem on the writed (Rob Richards), 1988 xmlAddChildList pointer problem (Rob Richards and Kevin Milburn), 1989 xmlAddChild problem with attribute (Rob Richards and Kris Breuker), 1990 avoid a memory leak in an edge case (Daniel Zimmermann), 1991 deallocate some pthread data (Alex Ott).</li> 1992 <li>Improvements: configure option to avoid rebuilding docs (Adrian Bunk), 1993 limit text nodes to 10MB max by default, add element traversal 1994 APIs, add a parser option to enable pre 2.7 SAX behavior (Rob Richards), 1995 add gcc malloc checking (Marcus Meissner), add gcc printf like functions 1996 parameters checking (Marcus Meissner).</li> 1997 </ul> 1998 <h3>2.7.2: Oct 3 2008</h3> 1999 <ul> 2000 <li>Portability fix: fix solaris compilation problem, fix compilation 2001 if XPath is not configured in</li> 2002 <li>Bug fixes: nasty entity bug introduced in 2.7.0, restore old behaviour 2003 when saving an HTML doc with an xml dump function, HTML UTF-8 parsing 2004 bug, fix reader custom error handlers (Riccardo Scussat) 2005 <li>Improvement: xmlSave options for more flexibility to save as 2006 XML/HTML/XHTML, handle leading BOM in HTML documents</li> 2007 </ul> 2008 2009 <h3>2.7.1: Sep 1 2008</h3> 2010 <ul> 2011 <li>Portability fix: Borland C fix (Moritz Both)</li> 2012 <li>Bug fixes: python serialization wrappers, XPath QName corner 2013 case handking and leaks (Martin)</li> 2014 <li>Improvement: extend the xmlSave to handle HTML documents and trees</li> 2015 <li>Cleanup: python serialization wrappers</li> 2016 </ul> 2017 2018 <h3>2.7.0: Aug 30 2008</h3> 2019 <ul> 2020 <li>Documentation: switch ChangeLog to UTF-8, improve mutithreads and 2021 xmlParserCleanup docs</li> 2022 <li>Portability fixes: Older Win32 platforms (Rob Richards), MSVC 2023 porting fix (Rob Richards), Mac OS X regression tests (Sven Herzberg), 2024 non GNUCC builds (Rob Richards), compilation on Haiku (Andreas Frber) 2025 </li> 2026 <li>Bug fixes: various realloc problems (Ashwin), potential double-free 2027 (Ashwin), regexp crash, icrash with invalid whitespace facets (Rob 2028 Richards), pattern fix when streaming (William Brack), various XML 2029 parsing and validation fixes based on the W3C regression tests, reader 2030 tree skipping function fix (Ashwin), Schemas regexps escaping fix 2031 (Volker Grabsch), handling of entity push errors (Ashwin), fix a slowdown 2032 when encoder cant serialize characters on output</li> 2033 <li>Code cleanup: compilation fix without the reader, without the output 2034 (Robert Schwebel), python whitespace (Martin), many space/tabs cleanups, 2035 serious cleanup of the entity handling code</li> 2036 <li>Improvement: switch parser to XML-1.0 5th edition, add parsing flags 2037 for old versions, switch URI parsing to RFC 3986, 2038 add xmlSchemaValidCtxtGetParserCtxt (Holger Kaelberer), 2039 new hashing functions for dictionnaries (based on Stefan Behnel work), 2040 improve handling of misplaced html/head/body in HTML parser, better 2041 regression test tools and code coverage display, better algorithms 2042 to detect various versions of the billion laughts attacks, make 2043 arbitrary parser limits avoidable as a parser option</li> 2044 </ul> 2045 <h3>2.6.32: Apr 8 2008</h3> 2046 <ul> 2047 <li>Documentation: returning heap memory to kernel (Wolfram Sang), 2048 trying to clarify xmlCleanupParser() use, xmlXPathContext improvement 2049 (Jack Jansen), improve the *Recover* functions documentation, 2050 XmlNodeType doc link fix (Martijn Arts)</li> 2051 <li>Bug fixes: internal subset memory leak (Ashwin), avoid problem with 2052 paths starting with // (Petr Sumbera), streaming XSD validation callback 2053 patches (Ashwin), fix redirection on port other than 80 (William Brack), 2054 SAX2 leak (Ashwin), XInclude fragment of own document (Chris Ryan), 2055 regexp bug with '.' (Andrew Tosh), flush the writer at the end of the 2056 document (Alfred Mickautsch), output I/O bug fix (William Brack), 2057 writer CDATA output after a text node (Alex Khesin), UTF-16 encoding 2058 detection (William Brack), fix handling of empty CDATA nodes for Safari 2059 team, python binding problem with namespace nodes, improve HTML parsing 2060 (Arnold Hendriks), regexp automata build bug, memory leak fix (Vasily 2061 Chekalkin), XSD test crash, weird system parameter entity parsing problem, 2062 allow save to file:///X:/ windows paths, various attribute normalisation 2063 problems, externalSubsetSplit fix (Ashwin), attribute redefinition in 2064 the DTD (Ashwin), fix in char ref parsing check (Alex Khesin), many 2065 out of memory handling fixes (Ashwin), XPath out of memory handling fixes 2066 (Alvaro Herrera), various realloc problems (Ashwin), UCS4 encoding 2067 conversion buffer size (Christian Fruth), problems with EatName 2068 functions on memory errors, BOM handling in external parsed entities 2069 (Mark Rowe)</li> 2070 <li>Code cleanup: fix build under VS 2008 (David Wimsey), remove useless 2071 mutex in xmlDict (Florent Guilian), Mingw32 compilation fix (Carlo 2072 Bramini), Win and MacOS EOL cleanups (Florent Guiliani), iconv need 2073 a const detection (Roumen Petrov), simplify xmlSetProp (Julien Charbon), 2074 cross compilation fixes for Mingw (Roumen Petrov), SCO Openserver build 2075 fix (Florent Guiliani), iconv uses const on Win32 (Rob Richards), 2076 duplicate code removal (Ashwin), missing malloc test and error reports 2077 (Ashwin), VMS makefile fix (Tycho Hilhorst)</li> 2078 <li>improvements: better plug of schematron in the normal error handling 2079 (Tobias Minich)</li> 2080 </ul> 2081 2082 <h3>2.6.31: Jan 11 2008</h3> 2083 <ul> 2084 <li>Security fix: missing of checks in UTF-8 parsing</li> 2085 <li>Bug fixes: regexp bug, dump attribute from XHTML document, fix 2086 xmlFree(NULL) to not crash in debug mode, Schematron parsing crash 2087 (Rob Richards), global lock free on Windows (Marc-Antoine Ruel), 2088 XSD crash due to double free (Rob Richards), indentation fix in 2089 xmlTextWriterFullEndElement (Felipe Pena), error in attribute type 2090 parsing if attribute redeclared, avoid crash in hash list scanner if 2091 deleting elements, column counter bug fix (Christian Schmidt), 2092 HTML embed element saving fix (Stefan Behnel), avoid -L/usr/lib 2093 output from xml2-config (Fred Crozat), avoid an xmllint crash 2094 (Stefan Kost), don't stop HTML parsing on out of range chars. 2095 </li> 2096 <li>Code cleanup: fix open() call third argument, regexp cut'n paste 2097 copy error, unused variable in __xmlGlobalInitMutexLock (Hannes Eder), 2098 some make distcheck realted fixes (John Carr)</li> 2099 <li>Improvements: HTTP Header: includes port number (William Brack), 2100 testURI --debug option, </li> 2101 </ul> 2102 <h3>2.6.30: Aug 23 2007</h3> 2103 <ul> 2104 <li>Portability: Solaris crash on error handling, windows path fixes 2105 (Roland Schwarz and Rob Richards), mingw build (Roland Schwarz)</li> 2106 <li>Bugfixes: xmlXPathNodeSetSort problem (William Brack), leak when 2107 reusing a writer for a new document (Dodji Seketeli), Schemas 2108 xsi:nil handling patch (Frank Gross), relative URI build problem 2109 (Patrik Fimml), crash in xmlDocFormatDump, invalid char in comment 2110 detection bug, fix disparity with xmlSAXUserParseMemory, automata 2111 generation for complex regexp counts problems, Schemas IDC import 2112 problems (Frank Gross), xpath predicate evailation error handling 2113 (William Brack)</li> 2114 </ul> 2115 <h3>2.6.29: Jun 12 2007</h3> 2116 <ul> 2117 <li>Portability: patches from Andreas Stricke for WinCEi, 2118 fix compilation warnings (William Brack), avoid warnings on Apple OS/X 2119 (Wendy Doyle and Mark Rowe), Windows compilation and threading 2120 improvements (Rob Richards), compilation against old Python versions, 2121 new GNU tar changes (Ryan Hill)</li> 2122 <li>Documentation: xmlURIUnescapeString comment, </li> 2123 <li>Bugfixes: xmlBufferAdd problem (Richard Jones), 'make valgrind' 2124 flag fix (Richard Jones), regexp interpretation of \, 2125 htmlCreateDocParserCtxt (Jean-Daniel Dupas), configure.in 2126 typo (Bjorn Reese), entity content failure, xmlListAppend() fix 2127 (Georges-Andr Silber), XPath number serialization (William Brack), 2128 nanohttp gzipped stream fix (William Brack and Alex Cornejo), 2129 xmlCharEncFirstLine typo (Mark Rowe), uri bug (Franois Delyon), 2130 XPath string value of PI nodes (William Brack), XPath node set 2131 sorting bugs (William Brack), avoid outputting namespace decl 2132 dups in the writer (Rob Richards), xmlCtxtReset bug, UTF-8 encoding 2133 error handling, recustion on next in catalogs, fix a Relax-NG crash, 2134 workaround wrong file: URIs, htmlNodeDumpFormatOutput on attributes, 2135 invalid character in attribute detection bug, big comments before 2136 internal subset streaming bug, HTML parsing of attributes with : in 2137 the name, IDness of name in HTML (Dagfinn I. Mannsker) </li> 2138 <li>Improvement: keep URI query parts in raw form (Richard Jones), 2139 embed tag support in HTML (Michael Day) </li> 2140 </ul> 2141 2142 <h3>2.6.28: Apr 17 2007</h3> 2143 <ul> 2144 <li>Documentation: comment fixes (Markus Keim), xpath comments fixes too 2145 (James Dennett)</li> 2146 <li>Bug fixes: XPath bug (William Brack), HTML parser autoclose stack usage 2147 (Usamah Malik), various regexp bug fixes (DV and William), path conversion 2148 on Windows (Igor Zlatkovic), htmlCtxtReset fix (Michael Day), XPath 2149 principal node of axis bug, HTML serialization of some codepoint 2150 (Steven Rainwater), user data propagation in XInclude (Michael Day), 2151 standalone and XML decl detection (Michael Day), Python id ouptut 2152 for some id, fix the big python string memory leak, URI parsing fixes 2153 (Stphane Bidoul and William), long comments parsing bug (William), 2154 concurrent threads initialization (Ted Phelps), invalid char 2155 in text XInclude (William), XPath memory leak (William), tab in 2156 python problems (Andreas Hanke), XPath node comparison error 2157 (Oleg Paraschenko), cleanup patch for reader (Julien Reichel), 2158 XML Schemas attribute group (William), HTML parsing problem (William), 2159 fix char 0x2d in regexps (William), regexp quantifier range with 2160 min occurs of 0 (William), HTML script/style parsing (Mike Day)</li> 2161 <li>Improvement: make xmlTextReaderSetup() public</li> 2162 <li>Compilation and postability: fix a missing include problem (William), 2163 __ss_familly on AIX again (Bjrn Wiberg), compilation without zlib 2164 (Michael Day), catalog patch for Win32 (Christian Ehrlicher), 2165 Windows CE fixes (Andreas Stricke)</li> 2166 <li>Various CVS to SVN infrastructure changes</li> 2167 </ul> 2168 <h3>2.6.27: Oct 25 2006</h3> 2169 <ul> 2170 <li>Portability fixes: file names on windows (Roland Schwingel, 2171 Emelyanov Alexey), windows compile fixup (Rob Richards), 2172 AIX iconv() is apparently case sensitive</li> 2173 <li>improvements: Python XPath types mapping (Nic Ferrier), XPath optimization 2174 (Kasimier), add xmlXPathCompiledEvalToBoolean (Kasimier), Python node 2175 equality and comparison (Andreas Pakulat), xmlXPathCollectAndTest 2176 improvememt (Kasimier), expose if library was compiled with zlib 2177 support (Andrew Nosenko), cache for xmlSchemaIDCMatcher structs 2178 (Kasimier), xmlTextConcat should work with comments and PIs (Rob 2179 Richards), export htmlNewParserCtxt needed by Michael Day, refactoring 2180 of catalog entity loaders (Michael Day), add XPointer support to 2181 python bindings (Ross Reedstrom, Brian West and Stefan Anca), 2182 try to sort out most file path to URI conversions and xmlPathToUri, 2183 add --html --memory case to xmllint</li> 2184 <li>building fix: fix --with-minimum (Felipe Contreras), VMS fix, 2185 const'ification of HTML parser structures (Matthias Clasen), 2186 portability fix (Emelyanov Alexey), wget autodetection (Peter 2187 Breitenlohner), remove the build path recorded in the python 2188 shared module, separate library flags for shared and static builds 2189 (Mikhail Zabaluev), fix --with-minimum --with-sax1 builds, fix 2190 --with-minimum --with-schemas builds</li> 2191 <li>bug fix: xmlGetNodePath fix (Kasimier), xmlDOMWrapAdoptNode and 2192 attribute (Kasimier), crash when using the recover mode, 2193 xmlXPathEvalExpr problem (Kasimier), xmlXPathCompExprAdd bug (Kasimier), 2194 missing destry in xmlFreeRMutex (Andrew Nosenko), XML Schemas fixes 2195 (Kasimier), warning on entities processing, XHTML script and style 2196 serialization (Kasimier), python generator for long types, bug in 2197 xmlSchemaClearValidCtxt (Bertrand Fritsch), xmlSchemaXPathEvaluate 2198 allocation bug (Marton Illes), error message end of line (Rob Richards), 2199 fix attribute serialization in writer (Rob Richards), PHP4 DTD validation 2200 crasher, parser safety patch (Ben Darnell), _private context propagation 2201 when parsing entities (with Michael Day), fix entities behaviour when 2202 using SAX, URI to file path fix (Mikhail Zabaluev), disapearing validity 2203 context, arg error in SAX callback (Mike Hommey), fix mixed-content 2204 autodetect when using --noblanks, fix xmlIOParseDTD error handling, 2205 fix bug in xmlSplitQName on special Names, fix Relax-NG element content 2206 validation bug, fix xmlReconciliateNs bug, fix potential attribute 2207 XML parsing bug, fix line/column accounting in XML parser, chunking bug 2208 in the HTML parser on script, try to detect obviously buggy HTML 2209 meta encoding indications, bugs with encoding BOM and xmlSaveDoc, 2210 HTML entities in attributes parsing, HTML minimized attribute values, 2211 htmlReadDoc and htmlReadIO were broken, error handling bug in 2212 xmlXPathEvalExpression (Olaf Walkowiak), fix a problem in 2213 htmlCtxtUseOptions, xmlNewInputFromFile could leak (Marius Konitzer), 2214 bug on misformed SSD regexps (Christopher Boumenot) 2215 </li> 2216 <li>documentation: warning about XML_PARSE_COMPACT (Kasimier Buchcik), 2217 fix xmlXPathCastToString documentation, improve man pages for 2218 xmllitn and xmlcatalog (Daniel Leidert), fixed comments of a few 2219 functions</li> 2220 </ul> 2221 <h3>2.6.26: Jun 6 2006</h3> 2222 <ul> 2223 <li>portability fixes: Python detection (Joseph Sacco), compilation 2224 error(William Brack and Graham Bennett), LynxOS patch (Olli Savia)</li> 2225 <li>bug fixes: encoding buffer problem, mix of code and data in 2226 xmlIO.c(Kjartan Maraas), entities in XSD validation (Kasimier Buchcik), 2227 variousXSD validation fixes (Kasimier), memory leak in pattern (Rob 2228 Richards andKasimier), attribute with colon in name (Rob Richards), XPath 2229 leak inerror reporting (Aleksey Sanin), XInclude text include of 2230 selfdocument.</li> 2231 <li>improvements: Xpath optimizations (Kasimier), XPath object 2232 cache(Kasimier)</li> 2233 </ul> 2234 2235 <h3>2.6.25: Jun 6 2006:</h3> 2236 2237 <p>Do not use or package 2.6.25</p> 2238 2239 <h3>2.6.24: Apr 28 2006</h3> 2240 <ul> 2241 <li>Portability fixes: configure on Windows, testapi compile on windows 2242 (Kasimier Buchcik, venkat naidu), Borland C++ 6 compile (Eric Zurcher), 2243 HP-UX compiler workaround (Rick Jones), xml2-config bugfix, gcc-4.1 2244 cleanups, Python detection scheme (Joseph Sacco), UTF-8 file paths on 2245 Windows (Roland Schwingel). 2246 </li> 2247 <li>Improvements: xmlDOMWrapReconcileNamespaces xmlDOMWrapCloneNode (Kasimier 2248 Buchcik), XML catalog debugging (Rick Jones), update to Unicode 4.01.</li> 2249 <li>Bug fixes: xmlParseChunk() problem in 2.6.23, xmlParseInNodeContext() 2250 on HTML docs, URI behaviour on Windows (Rob Richards), comment streaming 2251 bug, xmlParseComment (with William Brack), regexp bug fixes (DV & 2252 Youri Golovanov), xmlGetNodePath on text/CDATA (Kasimier), 2253 one Relax-NG interleave bug, xmllint --path and --valid, 2254 XSD bugfixes (Kasimier), remove debug 2255 left in Python bindings (Nic Ferrier), xmlCatalogAdd bug (Martin Cole), 2256 xmlSetProp fixes (Rob Richards), HTML IDness (Rob Richards), a large 2257 number of cleanups and small fixes based on Coverity reports, bug 2258 in character ranges, Unicode tables const (Aivars Kalvans), schemas 2259 fix (Stefan Kost), xmlRelaxNGParse error deallocation, 2260 xmlSchemaAddSchemaDoc error deallocation, error handling on unallowed 2261 code point, ixmllint --nonet to never reach the net (Gary Coady), 2262 line break in writer after end PI (Jason Viers). </li> 2263 <li>Documentation: man pages updates and cleanups (Daniel Leidert).</li> 2264 <li>New features: Relax NG structure error handlers.</li> 2265 </ul> 2266 2267 <h3>2.6.23: Jan 5 2006</h3> 2268 <ul> 2269 <li>portability fixes: Windows (Rob Richards), getaddrinfo on Windows 2270 (Kolja Nowak, Rob Richards), icc warnings (Kjartan Maraas), 2271 --with-minimum compilation fixes (William Brack), error case handling fix 2272 on Solaris (Albert Chin), don't use 'list' as parameter name reported by 2273 Samuel Diaz Garcia, more old Unices portability fixes (Albert Chin), 2274 MinGW compilation (Mark Junker), HP-UX compiler warnings (Rick 2275 Jones),</li> 2276 <li>code cleanup: xmlReportError (Adrian Mouat), remove xmlBufferClose 2277 (Geert Jansen), unreachable code (Oleksandr Kononenko), refactoring 2278 parsing code (Bjorn Reese)</li> 2279 <li>bug fixes: xmlBuildRelativeURI and empty path (William Brack), 2280 combinatory explosion and performances in regexp code, leak in 2281 xmlTextReaderReadString(), xmlStringLenDecodeEntities problem (Massimo 2282 Morara), Identity Constraints bugs and a segfault (Kasimier Buchcik), 2283 XPath pattern based evaluation bugs (DV & Kasimier), 2284 xmlSchemaContentModelDump() memory leak (Kasimier), potential leak in 2285 xmlSchemaCheckCSelectorXPath(), xmlTextWriterVSprintf() misuse of 2286 vsnprintf (William Brack), XHTML serialization fix (Rob Richards), CRLF 2287 split problem (William), issues with non-namespaced attributes in 2288 xmlAddChild() xmlAddNextSibling() and xmlAddPrevSibling() (Rob Richards), 2289 HTML parsing of script, Python must not output to stdout (Nic Ferrier), 2290 exclusive C14N namespace visibility (Aleksey Sanin), XSD dataype 2291 totalDigits bug (Kasimier Buchcik), error handling when writing to an 2292 xmlBuffer (Rob Richards), runtest schemas error not reported (Hisashi 2293 Fujinaka), signed/unsigned problem in date/time code (Albert Chin), fix 2294 XSI driven XSD validation (Kasimier), parsing of xs:decimal (Kasimier), 2295 fix DTD writer output (Rob Richards), leak in xmlTextReaderReadInnerXml 2296 (Gary Coady), regexp bug affecting schemas (Kasimier), configuration of 2297 runtime debugging (Kasimier), xmlNodeBufGetContent bug on entity refs 2298 (Oleksandr Kononenko), xmlRegExecPushString2 bug (Sreeni Nair), 2299 compilation and build fixes (Michael Day), removed dependancies on 2300 xmlSchemaValidError (Kasimier), bug with <xml:foo/>, more XPath 2301 pattern based evaluation fixes (Kasimier)</li> 2302 <li>improvements: XSD Schemas redefinitions/restrictions (Kasimier 2303 Buchcik), node copy checks and fix for attribute (Rob Richards), counted 2304 transition bug in regexps, ctxt->standalone = -2 to indicate no 2305 standalone attribute was found, add xmlSchemaSetParserStructuredErrors() 2306 (Kasimier Buchcik), add xmlTextReaderSchemaValidateCtxt() to API 2307 (Kasimier), handle gzipped HTTP resources (Gary Coady), add 2308 htmlDocDumpMemoryFormat. (Rob Richards),</li> 2309 <li>documentation: typo (Michael Day), libxml man page (Albert Chin), save 2310 function to XML buffer (Geert Jansen), small doc fix (Aron Stansvik),</li> 2311 </ul> 2312 2313 <h3>2.6.22: Sep 12 2005</h3> 2314 <ul> 2315 <li>build fixes: compile without schematron (Stphane Bidoul)</li> 2316 <li>bug fixes: xmlDebugDumpNode on namespace node (Oleg Paraschenko)i, 2317 CDATA push parser bug, xmlElemDump problem with XHTML1 doc, 2318 XML_FEATURE_xxx clash with expat headers renamed XML_WITH_xxx, fix some 2319 output formatting for meta element (Rob Richards), script and style 2320 XHTML1 serialization (David Madore), Attribute derivation fixups in XSD 2321 (Kasimier Buchcik), better IDC error reports (Kasimier Buchcik)</li> 2322 <li>improvements: add XML_SAVE_NO_EMPTY xmlSaveOption (Rob Richards), add 2323 XML_SAVE_NO_XHTML xmlSaveOption, XML Schemas improvements preparing for 2324 derive (Kasimier Buchcik).</li> 2325 <li>documentation: generation of gtk-doc like docs, integration with 2326 devhelp.</li> 2327 </ul> 2328 2329 <h3>2.6.21: Sep 4 2005</h3> 2330 <ul> 2331 <li>build fixes: Cygwin portability fixes (Gerrit P. Haase), calling 2332 convention problems on Windows (Marcus Boerger), cleanups based on Linus' 2333 sparse tool, update of win32/configure.js (Rob Richards), remove warnings 2334 on Windows(Marcus Boerger), compilation without SAX1, detection of the 2335 Python binary, use $GCC inestad of $CC = 'gcc' (Andrew W. Nosenko), 2336 compilation/link with threads and old gcc, compile problem by C370 on 2337 Z/OS,</li> 2338 <li>bug fixes: http_proxy environments (Peter Breitenlohner), HTML UTF-8 2339 bug (Jiri Netolicky), XPath NaN compare bug (William Brack), 2340 htmlParseScript potential bug, Schemas regexp handling of spaces, Base64 2341 Schemas comparisons NIST passes, automata build error xsd:all, 2342 xmlGetNodePath for namespaced attributes (Alexander Pohoyda), xmlSchemas 2343 foreign namespaces handling, XML Schemas facet comparison (Kupriyanov 2344 Anatolij), xmlSchemaPSimpleTypeErr error report (Kasimier Buchcik), xml: 2345 namespace ahndling in Schemas (Kasimier), empty model group in Schemas 2346 (Kasimier), wilcard in Schemas (Kasimier), URI composition (William), 2347 xs:anyType in Schemas (Kasimier), Python resolver emmitting error 2348 messages directly, Python xmlAttr.parent (Jakub Piotr Clapa), trying to 2349 fix the file path/URI conversion, xmlTextReaderGetAttribute fix (Rob 2350 Richards), xmlSchemaFreeAnnot memleak (Kasimier), HTML UTF-8 2351 serialization, streaming XPath, Schemas determinism detection problem, 2352 XInclude bug, Schemas context type (Dean Hill), validation fix (Derek 2353 Poon), xmlTextReaderGetAttribute[Ns] namespaces (Rob Richards), Schemas 2354 type fix (Kuba Nowakowski), UTF-8 parser bug, error in encoding handling, 2355 xmlGetLineNo fixes, bug on entities handling, entity name extraction in 2356 error handling with XInclude, text nodes in HTML body tags (Gary Coady), 2357 xml:id and IDness at the treee level fixes, XPath streaming patterns 2358 bugs.</li> 2359 <li>improvements: structured interfaces for schemas and RNG error reports 2360 (Marcus Boerger), optimization of the char data inner loop parsing 2361 (thanks to Behdad Esfahbod for the idea), schematron validation though 2362 not finished yet, xmlSaveOption to omit XML declaration, keyref match 2363 error reports (Kasimier), formal expression handling code not plugged 2364 yet, more lax mode for the HTML parser, parser XML_PARSE_COMPACT option 2365 for text nodes allocation.</li> 2366 <li>documentation: xmllint man page had --nonet duplicated</li> 2367 </ul> 2368 2369 <h3>2.6.20: Jul 10 2005</h3> 2370 <ul> 2371 <li>build fixes: Windows build (Rob Richards), Mingw compilation (Igor 2372 Zlatkovic), Windows Makefile (Igor), gcc warnings (Kasimier and 2373 andriy (a] google.com), use gcc weak references to pthread to avoid the 2374 pthread dependancy on Linux, compilation problem (Steve Nairn), compiling 2375 of subset (Morten Welinder), IPv6/ss_family compilation (William Brack), 2376 compilation when disabling parts of the library, standalone test 2377 distribution.</li> 2378 <li>bug fixes: bug in lang(), memory cleanup on errors (William Brack), 2379 HTTP query strings (Aron Stansvik), memory leak in DTD (William), integer 2380 overflow in XPath (William), nanoftp buffer size, pattern "." apth fixup 2381 (Kasimier), leak in tree reported by Malcolm Rowe, replaceNode patch 2382 (Brent Hendricks), CDATA with NULL content (Mark Vakoc), xml:base fixup 2383 on XInclude (William), pattern fixes (William), attribute bug in 2384 exclusive c14n (Aleksey Sanin), xml:space and xml:lang with SAX2 (Rob 2385 Richards), namespace trouble in complex parsing (Malcolm Rowe), XSD type 2386 QNames fixes (Kasimier), XPath streaming fixups (William), RelaxNG bug 2387 (Rob Richards), Schemas for Schemas fixes (Kasimier), removal of ID (Rob 2388 Richards), a small RelaxNG leak, HTML parsing in push mode bug (James 2389 Bursa), failure to detect UTF-8 parsing bugs in CDATA sections, 2390 areBlanks() heuristic failure, duplicate attributes in DTD bug 2391 (William).</li> 2392 <li>improvements: lot of work on Schemas by Kasimier Buchcik both on 2393 conformance and streaming, Schemas validation messages (Kasimier Buchcik, 2394 Matthew Burgess), namespace removal at the python level (Brent 2395 Hendricks), Update to new Schemas regression tests from W3C/Nist 2396 (Kasimier), xmlSchemaValidateFile() (Kasimier), implementation of 2397 xmlTextReaderReadInnerXml and xmlTextReaderReadOuterXml (James Wert), 2398 standalone test framework and programs, new DOM import APIs 2399 xmlDOMWrapReconcileNamespaces() xmlDOMWrapAdoptNode() and 2400 xmlDOMWrapRemoveNode(), extension of xmllint capabilities for SAX and 2401 Schemas regression tests, xmlStopParser() available in pull mode too, 2402 ienhancement to xmllint --shell namespaces support, Windows port of the 2403 standalone testing tools (Kasimier and William), 2404 xmlSchemaValidateStream() xmlSchemaSAXPlug() and xmlSchemaSAXUnplug() SAX 2405 Schemas APIs, Schemas xmlReader support.</li> 2406 </ul> 2407 2408 <h3>2.6.19: Apr 02 2005</h3> 2409 <ul> 2410 <li>build fixes: drop .la from RPMs, --with-minimum build fix (William 2411 Brack), use XML_SOCKLEN_T instead of SOCKLEN_T because it breaks with AIX 2412 5.3 compiler, fixed elfgcchack.h generation and PLT reduction code on 2413 Linux/ELF/gcc4</li> 2414 <li>bug fixes: schemas type decimal fixups (William Brack), xmmlint return 2415 code (Gerry Murphy), small schemas fixes (Matthew Burgess and GUY 2416 Fabrice), workaround "DAV:" namespace brokeness in c14n (Aleksey Sanin), 2417 segfault in Schemas (Kasimier Buchcik), Schemas attribute validation 2418 (Kasimier), Prop related functions and xmlNewNodeEatName (Rob Richards), 2419 HTML serialization of name attribute on a elements, Python error handlers 2420 leaks and improvement (Brent Hendricks), uninitialized variable in 2421 encoding code, Relax-NG validation bug, potential crash if 2422 gnorableWhitespace is NULL, xmlSAXParseDoc and xmlParseDoc signatures, 2423 switched back to assuming UTF-8 in case no encoding is given at 2424 serialization time</li> 2425 <li>improvements: lot of work on Schemas by Kasimier Buchcik on facets 2426 checking and also mixed handling.</li> 2427 <li></li> 2428 </ul> 2429 2430 <h3>2.6.18: Mar 13 2005</h3> 2431 <ul> 2432 <li>build fixes: warnings (Peter Breitenlohner), testapi.c generation, 2433 Bakefile support (Francesco Montorsi), Windows compilation (Joel Reed), 2434 some gcc4 fixes, HP-UX portability fixes (Rick Jones).</li> 2435 <li>bug fixes: xmlSchemaElementDump namespace (Kasimier Buchcik), push and 2436 xmlreader stopping on non-fatal errors, thread support for dictionnaries 2437 reference counting (Gary Coady), internal subset and push problem, URL 2438 saved in xmlCopyDoc, various schemas bug fixes (Kasimier), Python paths 2439 fixup (Stephane Bidoul), xmlGetNodePath and namespaces, xmlSetNsProp fix 2440 (Mike Hommey), warning should not count as error (William Brack), 2441 xmlCreatePushParser empty chunk, XInclude parser flags (William), cleanup 2442 FTP and HTTP code to reuse the uri parsing and IPv6 (William), 2443 xmlTextWriterStartAttributeNS fix (Rob Richards), XMLLINT_INDENT being 2444 empty (William), xmlWriter bugs (Rob Richards), multithreading on Windows 2445 (Rich Salz), xmlSearchNsByHref fix (Kasimier), Python binding leak (Brent 2446 Hendricks), aliasing bug exposed by gcc4 on s390, xmlTextReaderNext bug 2447 (Rob Richards), Schemas decimal type fixes (William Brack), 2448 xmlByteConsumed static buffer (Ben Maurer).</li> 2449 <li>improvement: speedup parsing comments and DTDs, dictionary support for 2450 hash tables, Schemas Identity constraints (Kasimier), streaming XPath 2451 subset, xmlTextReaderReadString added (Bjorn Reese), Schemas canonical 2452 values handling (Kasimier), add xmlTextReaderByteConsumed (Aron 2453 Stansvik),</li> 2454 <li>Documentation: Wiki support (Joel Reed)</li> 2455 </ul> 2456 2457 <h3>2.6.17: Jan 16 2005</h3> 2458 <ul> 2459 <li>build fixes: Windows, warnings removal (William Brack), 2460 maintainer-clean dependency(William), build in a different directory 2461 (William), fixing --with-minimum configure build (William), BeOS build 2462 (Marcin Konicki), Python-2.4 detection (William), compilation on AIX (Dan 2463 McNichol)</li> 2464 <li>bug fixes: xmlTextReaderHasAttributes (Rob Richards), xmlCtxtReadFile() 2465 to use the catalog(s), loop on output (William Brack), XPath memory leak, 2466 ID deallocation problem (Steve Shepard), debugDumpNode crash (William), 2467 warning not using error callback (William), xmlStopParser bug (William), 2468 UTF-16 with BOM on DTDs (William), namespace bug on empty elements in 2469 push mode (Rob Richards), line and col computations fixups (Aleksey 2470 Sanin), xmlURIEscape fix (William), xmlXPathErr on bad range (William), 2471 patterns with too many steps, bug in RNG choice optimization, line number 2472 sometimes missing.</li> 2473 <li>improvements: XSD Schemas (Kasimier Buchcik), python generator 2474 (William), xmlUTF8Strpos speedup (William), unicode Python strings 2475 (William), XSD error reports (Kasimier Buchcik), Python __str__ call 2476 serialize().</li> 2477 <li>new APIs: added xmlDictExists(), GetLineNumber and GetColumnNumber for 2478 the xmlReader (Aleksey Sanin), Dynamic Shared Libraries APIs (mostly Joel 2479 Reed), error extraction API from regexps, new XMLSave option for format 2480 (Phil Shafer)</li> 2481 <li>documentation: site improvement (John Fleck), FAQ entries 2482 (William).</li> 2483 </ul> 2484 2485 <h3>2.6.16: Nov 10 2004</h3> 2486 <ul> 2487 <li>general hardening and bug fixing crossing all the API based on new 2488 automated regression testing</li> 2489 <li>build fix: IPv6 build and test on AIX (Dodji Seketeli)</li> 2490 <li>bug fixes: problem with XML::Libxml reported by Petr Pajas, encoding 2491 conversion functions return values, UTF-8 bug affecting XPath reported by 2492 Markus Bertheau, catalog problem with NULL entries (William Brack)</li> 2493 <li>documentation: fix to xmllint man page, some API function descritpion 2494 were updated.</li> 2495 <li>improvements: DTD validation APIs provided at the Python level (Brent 2496 Hendricks)</li> 2497 </ul> 2498 2499 <h3>2.6.15: Oct 27 2004</h3> 2500 <ul> 2501 <li>security fixes on the nanoftp and nanohttp modules</li> 2502 <li>build fixes: xmllint detection bug in configure, building outside the 2503 source tree (Thomas Fitzsimmons)</li> 2504 <li>bug fixes: HTML parser on broken ASCII chars in names (William), Python 2505 paths (Malcolm Tredinnick), xmlHasNsProp and default namespace (William), 2506 saving to python file objects (Malcolm Tredinnick), DTD lookup fix 2507 (Malcolm), save back <group> in catalogs (William), tree build 2508 fixes (DV and Rob Richards), Schemas memory bug, structured error handler 2509 on Python 64bits, thread local memory deallocation, memory leak reported 2510 by Volker Roth, xmlValidateDtd in the presence of an internal subset, 2511 entities and _private problem (William), xmlBuildRelativeURI error 2512 (William).</li> 2513 <li>improvements: better XInclude error reports (William), tree debugging 2514 module and tests, convenience functions at the Reader API (Graham 2515 Bennett), add support for PI in the HTML parser.</li> 2516 </ul> 2517 2518 <h3>2.6.14: Sep 29 2004</h3> 2519 <ul> 2520 <li>build fixes: configure paths for xmllint and xsltproc, compilation 2521 without HTML parser, compilation warning cleanups (William Brack & 2522 Malcolm Tredinnick), VMS makefile update (Craig Berry),</li> 2523 <li>bug fixes: xmlGetUTF8Char (William Brack), QName properties (Kasimier 2524 Buchcik), XInclude testing, Notation serialization, UTF8ToISO8859x 2525 transcoding (Mark Itzcovitz), lots of XML Schemas cleanup and fixes 2526 (Kasimier), ChangeLog cleanup (Stepan Kasal), memory fixes (Mark Vakoc), 2527 handling of failed realloc(), out of bound array adressing in Schemas 2528 date handling, Python space/tabs cleanups (Malcolm Tredinnick), NMTOKENS 2529 E20 validation fix (Malcolm),</li> 2530 <li>improvements: added W3C XML Schemas testsuite (Kasimier Buchcik), add 2531 xmlSchemaValidateOneElement (Kasimier), Python exception hierearchy 2532 (Malcolm Tredinnick), Python libxml2 driver improvement (Malcolm 2533 Tredinnick), Schemas support for xsi:schemaLocation, 2534 xsi:noNamespaceSchemaLocation, xsi:type (Kasimier Buchcik)</li> 2535 </ul> 2536 2537 <h3>2.6.13: Aug 31 2004</h3> 2538 <ul> 2539 <li>build fixes: Windows and zlib (Igor Zlatkovic), -O flag with gcc, 2540 Solaris compiler warning, fixing RPM BuildRequires,</li> 2541 <li>fixes: DTD loading on Windows (Igor), Schemas error reports APIs 2542 (Kasimier Buchcik), Schemas validation crash, xmlCheckUTF8 (William Brack 2543 and Julius Mittenzwei), Schemas facet check (Kasimier), default namespace 2544 problem (William), Schemas hexbinary empty values, encoding error could 2545 genrate a serialization loop.</li> 2546 <li>Improvements: Schemas validity improvements (Kasimier), added --path 2547 and --load-trace options to xmllint</li> 2548 <li>documentation: tutorial update (John Fleck)</li> 2549 </ul> 2550 2551 <h3>2.6.12: Aug 22 2004</h3> 2552 <ul> 2553 <li>build fixes: fix --with-minimum, elfgcchack.h fixes (Peter 2554 Breitenlohner), perl path lookup (William), diff on Solaris (Albert 2555 Chin), some 64bits cleanups.</li> 2556 <li>Python: avoid a warning with 2.3 (William Brack), tab and space mixes 2557 (William), wrapper generator fixes (William), Cygwin support (Gerrit P. 2558 Haase), node wrapper fix (Marc-Antoine Parent), XML Schemas support 2559 (Torkel Lyng)</li> 2560 <li>Schemas: a lot of bug fixes and improvements from Kasimier Buchcik</li> 2561 <li>fixes: RVT fixes (William), XPath context resets bug (William), memory 2562 debug (Steve Hay), catalog white space handling (Peter Breitenlohner), 2563 xmlReader state after attribute reading (William), structured error 2564 handler (William), XInclude generated xml:base fixup (William), Windows 2565 memory reallocation problem (Steve Hay), Out of Memory conditions 2566 handling (William and Olivier Andrieu), htmlNewDoc() charset bug, 2567 htmlReadMemory init (William), a posteriori validation DTD base 2568 (William), notations serialization missing, xmlGetNodePath (Dodji), 2569 xmlCheckUTF8 (Diego Tartara), missing line numbers on entity 2570 (William)</li> 2571 <li>improvements: DocBook catalog build scrip (William), xmlcatalog tool 2572 (Albert Chin), xmllint --c14n option, no_proxy environment (Mike Hommey), 2573 xmlParseInNodeContext() addition, extend xmllint --shell, allow XInclude 2574 to not generate start/end nodes, extend xmllint --version to include CVS 2575 tag (William)</li> 2576 <li>documentation: web pages fixes, validity API docs fixes (William) 2577 schemas API fix (Eric Haszlakiewicz), xmllint man page (John Fleck)</li> 2578 </ul> 2579 2580 <h3>2.6.11: July 5 2004</h3> 2581 <ul> 2582 <li>Schemas: a lot of changes and improvements by Kasimier Buchcik for 2583 attributes, namespaces and simple types.</li> 2584 <li>build fixes: --with-minimum (William Brack), some gcc cleanup 2585 (William), --with-thread-alloc (William)</li> 2586 <li>portability: Windows binary package change (Igor Zlatkovic), Catalog 2587 path on Windows</li> 2588 <li>documentation: update to the tutorial (John Fleck), xmllint return code 2589 (John Fleck), man pages (Ville Skytta),</li> 2590 <li>bug fixes: C14N bug serializing namespaces (Aleksey Sanin), testSAX 2591 properly initialize the library (William), empty node set in XPath 2592 (William), xmlSchemas errors (William), invalid charref problem pointed 2593 by Morus Walter, XInclude xml:base generation (William), Relax-NG bug 2594 with div processing (William), XPointer and xml:base problem(William), 2595 Reader and entities, xmllint return code for schemas (William), reader 2596 streaming problem (Steve Ball), DTD serialization problem (William), 2597 libxml.m4 fixes (Mike Hommey), do not provide destructors as methods on 2598 Python classes, xmlReader buffer bug, Python bindings memory interfaces 2599 improvement (with Stphane Bidoul), Fixed the push parser to be back to 2600 synchronous behaviour.</li> 2601 <li>improvement: custom per-thread I/O enhancement (Rob Richards), register 2602 namespace in debug shell (Stefano Debenedetti), Python based regression 2603 test for non-Unix users (William), dynamically increase the number of 2604 XPath extension functions in Python and fix a memory leak (Marc-Antoine 2605 Parent and William)</li> 2606 <li>performance: hack done with Arjan van de Ven to reduce ELF footprint 2607 and generated code on Linux, plus use gcc runtime profiling to optimize 2608 the code generated in the RPM packages.</li> 2609 </ul> 2610 2611 <h3>2.6.10: May 17 2004</h3> 2612 <ul> 2613 <li>Web page generated for ChangeLog</li> 2614 <li>build fixes: --without-html problems, make check without make all</li> 2615 <li>portability: problem with xpath.c on Windows (MSC and Borland), memcmp 2616 vs. strncmp on Solaris, XPath tests on Windows (Mark Vakoc), C++ do not 2617 use "list" as parameter name, make tests work with Python 1.5 (Ed 2618 Davis),</li> 2619 <li>improvements: made xmlTextReaderMode public, small buffers resizing 2620 (Morten Welinder), add --maxmem option to xmllint, add 2621 xmlPopInputCallback() for Matt Sergeant, refactoring of serialization 2622 escaping, added escaping customization</li> 2623 <li>bugfixes: xsd:extension (Taihei Goi), assorted regexp bugs (William 2624 Brack), xmlReader end of stream problem, node deregistration with reader, 2625 URI escaping and filemanes, XHTML1 formatting (Nick Wellnhofer), regexp 2626 transition reduction (William), various XSD Schemas fixes (Kasimier 2627 Buchcik), XInclude fallback problem (William), weird problems with DTD 2628 (William), structured error handler callback context (William), reverse 2629 xmlEncodeSpecialChars() behaviour back to escaping '"'</li> 2630 </ul> 2631 2632 <h3>2.6.9: Apr 18 2004</h3> 2633 <ul> 2634 <li>implement xml:id Working Draft, relaxed XPath id() checking</li> 2635 <li>bugfixes: xmlCtxtReset (Brent Hendricks), line number and CDATA (Dave 2636 Beckett), Relax-NG compilation (William Brack), Regexp patches (with 2637 William), xmlUriEscape (Mark Vakoc), a Relax-NG notAllowed problem (with 2638 William), Relax-NG name classes compares (William), XInclude duplicate 2639 fallback (William), external DTD encoding detection (William), a DTD 2640 validation bug (William), xmlReader Close() fix, recusive extention 2641 schemas</li> 2642 <li>improvements: use xmlRead* APIs in test tools (Mark Vakoc), indenting 2643 save optimization, better handle IIS broken HTTP redirect behaviour (Ian 2644 Hummel), HTML parser frameset (James Bursa), libxml2-python RPM 2645 dependancy, XML Schemas union support (Kasimier Buchcik), warning removal 2646 clanup (William), keep ChangeLog compressed when installing from RPMs</li> 2647 <li>documentation: examples and xmlDocDumpMemory docs (John Fleck), new 2648 example (load, xpath, modify, save), xmlCatalogDump() comments,</li> 2649 <li>Windows: Borland C++ builder (Eric Zurcher), work around Microsoft 2650 compiler NaN handling bug (Mark Vakoc)</li> 2651 </ul> 2652 2653 <h3>2.6.8: Mar 23 2004</h3> 2654 <ul> 2655 <li>First step of the cleanup of the serialization code and APIs</li> 2656 <li>XML Schemas: mixed content (Adam Dickmeiss), QName handling fixes (Adam 2657 Dickmeiss), anyURI for "" (John Belmonte)</li> 2658 <li>Python: Canonicalization C14N support added (Anthony Carrico)</li> 2659 <li>xmlDocCopyNode() extension (William)</li> 2660 <li>Relax-NG: fix when processing XInclude results (William), external 2661 reference in interleave (William), missing error on <choice> 2662 failure (William), memory leak in schemas datatype facets.</li> 2663 <li>xmlWriter: patch for better DTD support (Alfred Mickautsch)</li> 2664 <li>bug fixes: xmlXPathLangFunction memory leak (Mike Hommey and William 2665 Brack), no ID errors if using HTML_PARSE_NOERROR, xmlcatalog fallbacks to 2666 URI on SYSTEM lookup failure, XInclude parse flags inheritance (William), 2667 XInclude and XPointer fixes for entities (William), XML parser bug 2668 reported by Holger Rauch, nanohttp fd leak (William), regexps char 2669 groups '-' handling (William), dictionary reference counting problems, 2670 do not close stderr.</li> 2671 <li>performance patches from Petr Pajas</li> 2672 <li>Documentation fixes: XML_CATALOG_FILES in man pages (Mike Hommey)</li> 2673 <li>compilation and portability fixes: --without-valid, catalog cleanups 2674 (Peter Breitenlohner), MingW patch (Roland Schwingel), cross-compilation 2675 to Windows (Christophe de Vienne), --with-html-dir fixup (Julio Merino 2676 Vidal), Windows build (Eric Zurcher)</li> 2677 </ul> 2678 2679 <h3>2.6.7: Feb 23 2004</h3> 2680 <ul> 2681 <li>documentation: tutorial updates (John Fleck), benchmark results</li> 2682 <li>xmlWriter: updates and fixes (Alfred Mickautsch, Lucas Brasilino)</li> 2683 <li>XPath optimization (Petr Pajas)</li> 2684 <li>DTD ID handling optimization</li> 2685 <li>bugfixes: xpath number with > 19 fractional (William Brack), push 2686 mode with unescaped '>' characters, fix xmllint --stream --timing, fix 2687 xmllint --memory --stream memory usage, xmlAttrSerializeTxtContent 2688 handling NULL, trying to fix Relax-NG/Perl interface.</li> 2689 <li>python: 2.3 compatibility, whitespace fixes (Malcolm Tredinnick)</li> 2690 <li>Added relaxng option to xmllint --shell</li> 2691 </ul> 2692 2693 <h3>2.6.6: Feb 12 2004</h3> 2694 <ul> 2695 <li>nanohttp and nanoftp: buffer overflow error on URI parsing (Igor and 2696 William) reported by Yuuichi Teranishi</li> 2697 <li>bugfixes: make test and path issues, xmlWriter attribute serialization 2698 (William Brack), xmlWriter indentation (William), schemas validation 2699 (Eric Haszlakiewicz), XInclude dictionnaries issues (William and Oleg 2700 Paraschenko), XInclude empty fallback (William), HTML warnings (William), 2701 XPointer in XInclude (William), Python namespace serialization, 2702 isolat1ToUTF8 bound error (Alfred Mickautsch), output of parameter 2703 entities in internal subset (William), internal subset bug in push mode, 2704 <xs:all> fix (Alexey Sarytchev)</li> 2705 <li>Build: fix for automake-1.8 (Alexander Winston), warnings removal 2706 (Philip Ludlam), SOCKLEN_T detection fixes (Daniel Richard), fix 2707 --with-minimum configuration.</li> 2708 <li>XInclude: allow the 2001 namespace without warning.</li> 2709 <li>Documentation: missing example/index.html (John Fleck), version 2710 dependancies (John Fleck)</li> 2711 <li>reader API: structured error reporting (Steve Ball)</li> 2712 <li>Windows compilation: mingw, msys (Mikhail Grushinskiy), function 2713 prototype (Cameron Johnson), MSVC6 compiler warnings, _WINSOCKAPI_ 2714 patch</li> 2715 <li>Parsers: added xmlByteConsumed(ctxt) API to get the byte offest in 2716 input.</li> 2717 </ul> 2718 2719 <h3>2.6.5: Jan 25 2004</h3> 2720 <ul> 2721 <li>Bugfixes: dictionnaries for schemas (William Brack), regexp segfault 2722 (William), xs:all problem (William), a number of XPointer bugfixes 2723 (William), xmllint error go to stderr, DTD validation problem with 2724 namespace, memory leak (William), SAX1 cleanup and minimal options fixes 2725 (Mark Vadoc), parser context reset on error (Shaun McCance), XPath union 2726 evaluation problem (William) , xmlReallocLoc with NULL (Aleksey Sanin), 2727 XML Schemas double free (Steve Ball), XInclude with no href, argument 2728 callbacks order for XPath callbacks (Frederic Peters)</li> 2729 <li>Documentation: python scripts (William Brack), xslt stylesheets (John 2730 Fleck), doc (Sven Zimmerman), I/O example.</li> 2731 <li>Python bindings: fixes (William), enum support (Stphane Bidoul), 2732 structured error reporting (Stphane Bidoul)</li> 2733 <li>XInclude: various fixes for conformance, problem related to dictionary 2734 references (William & me), recursion (William)</li> 2735 <li>xmlWriter: indentation (Lucas Brasilino), memory leaks (Alfred 2736 Mickautsch),</li> 2737 <li>xmlSchemas: normalizedString datatype (John Belmonte)</li> 2738 <li>code cleanup for strings functions (William)</li> 2739 <li>Windows: compiler patches (Mark Vakoc)</li> 2740 <li>Parser optimizations, a few new XPath and dictionary APIs for future 2741 XSLT optimizations.</li> 2742 </ul> 2743 2744 <h3>2.6.4: Dec 24 2003</h3> 2745 <ul> 2746 <li>Windows build fixes (Igor Zlatkovic)</li> 2747 <li>Some serious XInclude problems reported by Oleg Paraschenko and</li> 2748 <li>Unix and Makefile packaging fixes (me, William Brack,</li> 2749 <li>Documentation improvements (John Fleck, William Brack), example fix 2750 (Lucas Brasilino)</li> 2751 <li>bugfixes: xmlTextReaderExpand() with xmlReaderWalker, XPath handling of 2752 NULL strings (William Brack) , API building reader or parser from 2753 filedescriptor should not close it, changed XPath sorting to be stable 2754 again (William Brack), xmlGetNodePath() generating '(null)' (William 2755 Brack), DTD validation and namespace bug (William Brack), XML Schemas 2756 double inclusion behaviour</li> 2757 </ul> 2758 2759 <h3>2.6.3: Dec 10 2003</h3> 2760 <ul> 2761 <li>documentation updates and cleanup (DV, William Brack, John Fleck)</li> 2762 <li>added a repository of examples, examples from Aleksey Sanin, Dodji 2763 Seketeli, Alfred Mickautsch</li> 2764 <li>Windows updates: Mark Vakoc, Igor Zlatkovic, Eric Zurcher, Mingw 2765 (Kenneth Haley)</li> 2766 <li>Unicode range checking (William Brack)</li> 2767 <li>code cleanup (William Brack)</li> 2768 <li>Python bindings: doc (John Fleck), bug fixes</li> 2769 <li>UTF-16 cleanup and BOM issues (William Brack)</li> 2770 <li>bug fixes: ID and xmlReader validation, XPath (William Brack), 2771 xmlWriter (Alfred Mickautsch), hash.h inclusion problem, HTML parser 2772 (James Bursa), attribute defaulting and validation, some serialization 2773 cleanups, XML_GET_LINE macro, memory debug when using threads (William 2774 Brack), serialization of attributes and entities content, xmlWriter 2775 (Daniel Schulman)</li> 2776 <li>XInclude bugfix, new APIs and update to the last version including the 2777 namespace change.</li> 2778 <li>XML Schemas improvements: include (Robert Stepanek), import and 2779 namespace handling, fixed the regression tests troubles, added examples 2780 based on Eric van der Vlist book, regexp fixes</li> 2781 <li>preliminary pattern support for streaming (needed for schemas 2782 constraints), added xmlTextReaderPreservePattern() to collect subdocument 2783 when streaming.</li> 2784 <li>various fixes in the structured error handling</li> 2785 </ul> 2786 2787 <h3>2.6.2: Nov 4 2003</h3> 2788 <ul> 2789 <li>XPath context unregistration fixes</li> 2790 <li>text node coalescing fixes (Mark Lilback)</li> 2791 <li>API to screate a W3C Schemas from an existing document (Steve Ball)</li> 2792 <li>BeOS patches (Marcin 'Shard' Konicki)</li> 2793 <li>xmlStrVPrintf function added (Aleksey Sanin)</li> 2794 <li>compilation fixes (Mark Vakoc)</li> 2795 <li>stdin parsing fix (William Brack)</li> 2796 <li>a posteriori DTD validation fixes</li> 2797 <li>xmlReader bug fixes: Walker fixes, python bindings</li> 2798 <li>fixed xmlStopParser() to really stop the parser and errors</li> 2799 <li>always generate line numbers when using the new xmlReadxxx 2800 functions</li> 2801 <li>added XInclude support to the xmlReader interface</li> 2802 <li>implemented XML_PARSE_NONET parser option</li> 2803 <li>DocBook XSLT processing bug fixed</li> 2804 <li>HTML serialization for <p> elements (William Brack and me)</li> 2805 <li>XPointer failure in XInclude are now handled as resource errors</li> 2806 <li>fixed xmllint --html to use the HTML serializer on output (added 2807 --xmlout to implement the previous behaviour of saving it using the XML 2808 serializer)</li> 2809 </ul> 2810 2811 <h3>2.6.1: Oct 28 2003</h3> 2812 <ul> 2813 <li>Mostly bugfixes after the big 2.6.0 changes</li> 2814 <li>Unix compilation patches: libxml.m4 (Patrick Welche), warnings cleanup 2815 (William Brack)</li> 2816 <li>Windows compilation patches (Joachim Bauch, Stephane Bidoul, Igor 2817 Zlatkovic)</li> 2818 <li>xmlWriter bugfix (Alfred Mickautsch)</li> 2819 <li>chvalid.[ch]: couple of fixes from Stephane Bidoul</li> 2820 <li>context reset: error state reset, push parser reset (Graham 2821 Bennett)</li> 2822 <li>context reuse: generate errors if file is not readable</li> 2823 <li>defaulted attributes for element coming from internal entities 2824 (Stephane Bidoul)</li> 2825 <li>Python: tab and spaces mix (William Brack)</li> 2826 <li>Error handler could crash in DTD validation in 2.6.0</li> 2827 <li>xmlReader: do not use the document or element _private field</li> 2828 <li>testSAX.c: avoid a problem with some PIs (Massimo Morara)</li> 2829 <li>general bug fixes: mandatory encoding in text decl, serializing 2830 Document Fragment nodes, xmlSearchNs 2.6.0 problem (Kasimier Buchcik), 2831 XPath errors not reported, slow HTML parsing of large documents.</li> 2832 </ul> 2833 2834 <h3>2.6.0: Oct 20 2003</h3> 2835 <ul> 2836 <li>Major revision release: should be API and ABI compatible but got a lot 2837 of change</li> 2838 <li>Increased the library modularity, far more options can be stripped out, 2839 a --with-minimum configuration will weight around 160KBytes</li> 2840 <li>Use per parser and per document dictionary, allocate names and small 2841 text nodes from the dictionary</li> 2842 <li>Switch to a SAX2 like parser rewrote most of the XML parser core, 2843 provides namespace resolution and defaulted attributes, minimize memory 2844 allocations and copies, namespace checking and specific error handling, 2845 immutable buffers, make predefined entities static structures, etc...</li> 2846 <li>rewrote all the error handling in the library, all errors can be 2847 intercepted at a structured level, with precise information 2848 available.</li> 2849 <li>New simpler and more generic XML and HTML parser APIs, allowing to 2850 easilly modify the parsing options and reuse parser context for multiple 2851 consecutive documents.</li> 2852 <li>Similar new APIs for the xmlReader, for options and reuse, provided new 2853 functions to access content as const strings, use them for Python 2854 bindings</li> 2855 <li>a lot of other smaller API improvements: xmlStrPrintf (Aleksey Sanin), 2856 Walker i.e. reader on a document tree based on Alfred Mickautsch code, 2857 make room in nodes for line numbers, reference counting and future PSVI 2858 extensions, generation of character ranges to be checked with faster 2859 algorithm (William), xmlParserMaxDepth (Crutcher Dunnavant), buffer 2860 access</li> 2861 <li>New xmlWriter API provided by Alfred Mickautsch</li> 2862 <li>Schemas: base64 support by Anthony Carrico</li> 2863 <li>Parser<->HTTP integration fix, proper processing of the Mime-Type 2864 and charset information if available.</li> 2865 <li>Relax-NG: bug fixes including the one reported by Martijn Faassen and 2866 zeroOrMore, better error reporting.</li> 2867 <li>Python bindings (Stphane Bidoul), never use stdout for errors 2868 output</li> 2869 <li>Portability: all the headers have macros for export and calling 2870 convention definitions (Igor Zlatkovic), VMS update (Craig A. Berry), 2871 Windows: threads (Jesse Pelton), Borland compiler (Eric Zurcher, Igor), 2872 Mingw (Igor), typos (Mark Vakoc), beta version (Stephane Bidoul), 2873 warning cleanups on AIX and MIPS compilers (William Brack), BeOS (Marcin 2874 'Shard' Konicki)</li> 2875 <li>Documentation fixes and README (William Brack), search fix (William), 2876 tutorial updates (John Fleck), namespace docs (Stefan Kost)</li> 2877 <li>Bug fixes: xmlCleanupParser (Dave Beckett), threading uninitialized 2878 mutexes, HTML doctype lowercase, SAX/IO (William), compression detection 2879 and restore (William), attribute declaration in DTDs (William), namespace 2880 on attribute in HTML output (William), input filename (Rob Richards), 2881 namespace DTD validation, xmlReplaceNode (Chris Ryland), I/O callbacks 2882 (Markus Keim), CDATA serialization (Shaun McCance), xmlReader (Peter 2883 Derr), high codepoint charref like &#x10FFFF;, buffer access in push 2884 mode (Justin Fletcher), TLS threads on Windows (Jesse Pelton), XPath bug 2885 (William), xmlCleanupParser (Marc Liyanage), CDATA output (William), HTTP 2886 error handling.</li> 2887 <li>xmllint options: --dtdvalidfpi for Tobias Reif, --sax1 for compat 2888 testing, --nodict for building without tree dictionary, --nocdata to 2889 replace CDATA by text, --nsclean to remove surperfluous namespace 2890 declarations</li> 2891 <li>added xml2-config --libtool-libs option from Kevin P. Fleming</li> 2892 <li>a lot of profiling and tuning of the code, speedup patch for 2893 xmlSearchNs() by Luca Padovani. The xmlReader should do far less 2894 allocation and it speed should get closer to SAX. Chris Anderson worked 2895 on speeding and cleaning up repetitive checking code.</li> 2896 <li>cleanup of "make tests"</li> 2897 <li>libxml-2.0-uninstalled.pc from Malcolm Tredinnick</li> 2898 <li>deactivated the broken docBook SGML parser code and plugged the XML 2899 parser instead.</li> 2900 </ul> 2901 2902 <h3>2.5.11: Sep 9 2003</h3> 2903 2904 <p>A bugfix only release:</p> 2905 <ul> 2906 <li>risk of crash in Relax-NG</li> 2907 <li>risk of crash when using multithreaded programs</li> 2908 </ul> 2909 2910 <h3>2.5.10: Aug 15 2003</h3> 2911 2912 <p>A bugfixes only release</p> 2913 <ul> 2914 <li>Windows Makefiles (William Brack)</li> 2915 <li>UTF-16 support fixes (Mark Itzcovitz)</li> 2916 <li>Makefile and portability (William Brack) automake, Linux alpha, Mingw 2917 on Windows (Mikhail Grushinskiy)</li> 2918 <li>HTML parser (Oliver Stoeneberg)</li> 2919 <li>XInclude performance problem reported by Kevin Ruscoe</li> 2920 <li>XML parser performance problem reported by Grant Goodale</li> 2921 <li>xmlSAXParseDTD() bug fix from Malcolm Tredinnick</li> 2922 <li>and a couple other cleanup</li> 2923 </ul> 2924 2925 <h3>2.5.9: Aug 9 2003</h3> 2926 <ul> 2927 <li>bugfixes: IPv6 portability, xmlHasNsProp (Markus Keim), Windows build 2928 (Wiliam Brake, Jesse Pelton, Igor), Schemas (Peter Sobisch), threading 2929 (Rob Richards), hexBinary type (), UTF-16 BOM (Dodji Seketeli), 2930 xmlReader, Relax-NG schemas compilation, namespace handling, EXSLT (Sean 2931 Griffin), HTML parsing problem (William Brack), DTD validation for mixed 2932 content + namespaces, HTML serialization, library initialization, 2933 progressive HTML parser</li> 2934 <li>better interfaces for Relax-NG error handling (Joachim Bauch, )</li> 2935 <li>adding xmlXIncludeProcessTree() for XInclud'ing in a subtree</li> 2936 <li>doc fixes and improvements (John Fleck)</li> 2937 <li>configure flag for -with-fexceptions when embedding in C++</li> 2938 <li>couple of new UTF-8 helper functions (William Brack)</li> 2939 <li>general encoding cleanup + ISO-8859-x without iconv (Peter Jacobi)</li> 2940 <li>xmlTextReader cleanup + enum for node types (Bjorn Reese)</li> 2941 <li>general compilation/warning cleanup Solaris/HP-UX/... (William 2942 Brack)</li> 2943 </ul> 2944 2945 <h3>2.5.8: Jul 6 2003</h3> 2946 <ul> 2947 <li>bugfixes: XPath, XInclude, file/URI mapping, UTF-16 save (Mark 2948 Itzcovitz), UTF-8 checking, URI saving, error printing (William Brack), 2949 PI related memleak, compilation without schemas or without xpath (Joerg 2950 Schmitz-Linneweber/Garry Pennington), xmlUnlinkNode problem with DTDs, 2951 rpm problem on , i86_64, removed a few compilation problems from 2.5.7, 2952 xmlIOParseDTD, and xmlSAXParseDTD (Malcolm Tredinnick)</li> 2953 <li>portability: DJGPP (MsDos) , OpenVMS (Craig A. Berry)</li> 2954 <li>William Brack fixed multithreading lock problems</li> 2955 <li>IPv6 patch for FTP and HTTP accesses (Archana Shah/Wipro)</li> 2956 <li>Windows fixes (Igor Zlatkovic, Eric Zurcher), threading (Stphane 2957 Bidoul)</li> 2958 <li>A few W3C Schemas Structure improvements</li> 2959 <li>W3C Schemas Datatype improvements (Charlie Bozeman)</li> 2960 <li>Python bindings for thread globals (Stphane Bidoul), and method/class 2961 generator</li> 2962 <li>added --nonet option to xmllint</li> 2963 <li>documentation improvements (John Fleck)</li> 2964 </ul> 2965 2966 <h3>2.5.7: Apr 25 2003</h3> 2967 <ul> 2968 <li>Relax-NG: Compiling to regexp and streaming validation on top of the 2969 xmlReader interface, added to xmllint --stream</li> 2970 <li>xmlReader: Expand(), Next() and DOM access glue, bug fixes</li> 2971 <li>Support for large files: RGN validated a 4.5GB instance</li> 2972 <li>Thread support is now configured in by default</li> 2973 <li>Fixes: update of the Trio code (Bjorn), WXS Date and Duration fixes 2974 (Charles Bozeman), DTD and namespaces (Brent Hendricks), HTML push parser 2975 and zero bytes handling, some missing Windows file path conversions, 2976 behaviour of the parser and validator in the presence of "out of memory" 2977 error conditions</li> 2978 <li>extended the API to be able to plug a garbage collecting memory 2979 allocator, added xmlMallocAtomic() and modified the allocations 2980 accordingly.</li> 2981 <li>Performances: removed excessive malloc() calls, speedup of the push and 2982 xmlReader interfaces, removed excessive thread locking</li> 2983 <li>Documentation: man page (John Fleck), xmlReader documentation</li> 2984 <li>Python: adding binding for xmlCatalogAddLocal (Brent M Hendricks)</li> 2985 </ul> 2986 2987 <h3>2.5.6: Apr 1 2003</h3> 2988 <ul> 2989 <li>Fixed W3C XML Schemas datatype, should be compliant now except for 2990 binHex and base64 which are not supported yet.</li> 2991 <li>bug fixes: non-ASCII IDs, HTML output, XInclude on large docs and 2992 XInclude entities handling, encoding detection on external subsets, XML 2993 Schemas bugs and memory leaks, HTML parser (James Bursa)</li> 2994 <li>portability: python/trio (Albert Chin), Sun compiler warnings</li> 2995 <li>documentation: added --relaxng option to xmllint man page (John)</li> 2996 <li>improved error reporting: xml:space, start/end tag mismatches, Relax NG 2997 errors</li> 2998 </ul> 2999 3000 <h3>2.5.5: Mar 24 2003</h3> 3001 <ul> 3002 <li>Lot of fixes on the Relax NG implementation. More testing including 3003 DocBook and TEI examples.</li> 3004 <li>Increased the support for W3C XML Schemas datatype</li> 3005 <li>Several bug fixes in the URI handling layer</li> 3006 <li>Bug fixes: HTML parser, xmlReader, DTD validation, XPath, encoding 3007 conversion, line counting in the parser.</li> 3008 <li>Added support for $XMLLINT_INDENT environment variable, FTP delete</li> 3009 <li>Fixed the RPM spec file name</li> 3010 </ul> 3011 3012 <h3>2.5.4: Feb 20 2003</h3> 3013 <ul> 3014 <li>Conformance testing and lot of fixes on Relax NG and XInclude 3015 implementation</li> 3016 <li>Implementation of XPointer element() scheme</li> 3017 <li>Bug fixes: XML parser, XInclude entities merge, validity checking on 3018 namespaces, 3019 <p>2 serialization bugs, node info generation problems, a DTD regexp 3020 generation problem.</p> 3021 </li> 3022 <li>Portability: windows updates and path canonicalization (Igor)</li> 3023 <li>A few typo fixes (Kjartan Maraas)</li> 3024 <li>Python bindings generator fixes (Stephane Bidoul)</li> 3025 </ul> 3026 3027 <h3>2.5.3: Feb 10 2003</h3> 3028 <ul> 3029 <li>RelaxNG and XML Schemas datatypes improvements, and added a first 3030 version of RelaxNG Python bindings</li> 3031 <li>Fixes: XLink (Sean Chittenden), XInclude (Sean Chittenden), API fix for 3032 serializing namespace nodes, encoding conversion bug, XHTML1 3033 serialization</li> 3034 <li>Portability fixes: Windows (Igor), AMD 64bits RPM spec file</li> 3035 </ul> 3036 3037 <h3>2.5.2: Feb 5 2003</h3> 3038 <ul> 3039 <li>First implementation of RelaxNG, added --relaxng flag to xmllint</li> 3040 <li>Schemas support now compiled in by default.</li> 3041 <li>Bug fixes: DTD validation, namespace checking, XInclude and entities, 3042 delegateURI in XML Catalogs, HTML parser, XML reader (Stphane Bidoul), 3043 XPath parser and evaluation, UTF8ToUTF8 serialization, XML reader memory 3044 consumption, HTML parser, HTML serialization in the presence of 3045 namespaces</li> 3046 <li>added an HTML API to check elements and attributes.</li> 3047 <li>Documentation improvement, PDF for the tutorial (John Fleck), doc 3048 patches (Stefan Kost)</li> 3049 <li>Portability fixes: NetBSD (Julio Merino), Windows (Igor Zlatkovic)</li> 3050 <li>Added python bindings for XPointer, contextual error reporting 3051 (Stphane Bidoul)</li> 3052 <li>URI/file escaping problems (Stefano Zacchiroli)</li> 3053 </ul> 3054 3055 <h3>2.5.1: Jan 8 2003</h3> 3056 <ul> 3057 <li>Fixes a memory leak and configuration/compilation problems in 2.5.0</li> 3058 <li>documentation updates (John)</li> 3059 <li>a couple of XmlTextReader fixes</li> 3060 </ul> 3061 3062 <h3>2.5.0: Jan 6 2003</h3> 3063 <ul> 3064 <li>New <a href="xmlreader.html">XmltextReader interface</a> based on C# 3065 API (with help of Stphane Bidoul)</li> 3066 <li>Windows: more exports, including the new API (Igor)</li> 3067 <li>XInclude fallback fix</li> 3068 <li>Python: bindings for the new API, packaging (Stphane Bidoul), 3069 drv_libxml2.py Python xml.sax driver (Stphane Bidoul), fixes, speedup 3070 and iterators for Python-2.2 (Hannu Krosing)</li> 3071 <li>Tutorial fixes (john Fleck and Niraj Tolia) xmllint man update 3072 (John)</li> 3073 <li>Fix an XML parser bug raised by Vyacheslav Pindyura</li> 3074 <li>Fix for VMS serialization (Nigel Hall) and config (Craig A. Berry)</li> 3075 <li>Entities handling fixes</li> 3076 <li>new API to optionally track node creation and deletion (Lukas 3077 Schroeder)</li> 3078 <li>Added documentation for the XmltextReader interface and some <a 3079 href="guidelines.html">XML guidelines</a></li> 3080 </ul> 3081 3082 <h3>2.4.30: Dec 12 2002</h3> 3083 <ul> 3084 <li>2.4.29 broke the python bindings, rereleasing</li> 3085 <li>Improvement/fixes of the XML API generator, and couple of minor code 3086 fixes.</li> 3087 </ul> 3088 3089 <h3>2.4.29: Dec 11 2002</h3> 3090 <ul> 3091 <li>Windows fixes (Igor): Windows CE port, pthread linking, python bindings 3092 (Stphane Bidoul), Mingw (Magnus Henoch), and export list updates</li> 3093 <li>Fix for prev in python bindings (ERDI Gergo)</li> 3094 <li>Fix for entities handling (Marcus Clarke)</li> 3095 <li>Refactored the XML and HTML dumps to a single code path, fixed XHTML1 3096 dump</li> 3097 <li>Fix for URI parsing when handling URNs with fragment identifiers</li> 3098 <li>Fix for HTTP URL escaping problem</li> 3099 <li>added an TextXmlReader (C#) like API (work in progress)</li> 3100 <li>Rewrote the API in XML generation script, includes a C parser and saves 3101 more information needed for C# bindings</li> 3102 </ul> 3103 3104 <h3>2.4.28: Nov 22 2002</h3> 3105 <ul> 3106 <li>a couple of python binding fixes</li> 3107 <li>2 bug fixes in the XML push parser</li> 3108 <li>potential memory leak removed (Martin Stoilov)</li> 3109 <li>fix to the configure script for Unix (Dimitri Papadopoulos)</li> 3110 <li>added encoding support for XInclude parse="text"</li> 3111 <li>autodetection of XHTML1 and specific serialization rules added</li> 3112 <li>nasty threading bug fixed (William Brack)</li> 3113 </ul> 3114 3115 <h3>2.4.27: Nov 17 2002</h3> 3116 <ul> 3117 <li>fixes for the Python bindings</li> 3118 <li>a number of bug fixes: SGML catalogs, xmlParseBalancedChunkMemory(), 3119 HTML parser, Schemas (Charles Bozeman), document fragment support 3120 (Christian Glahn), xmlReconciliateNs (Brian Stafford), XPointer, 3121 xmlFreeNode(), xmlSAXParseMemory (Peter Jones), xmlGetNodePath (Petr 3122 Pajas), entities processing</li> 3123 <li>added grep to xmllint --shell</li> 3124 <li>VMS update patch from Craig A. Berry</li> 3125 <li>cleanup of the Windows build with support for more compilers (Igor), 3126 better thread support on Windows</li> 3127 <li>cleanup of Unix Makefiles and spec file</li> 3128 <li>Improvements to the documentation (John Fleck)</li> 3129 </ul> 3130 3131 <h3>2.4.26: Oct 18 2002</h3> 3132 <ul> 3133 <li>Patches for Windows CE port, improvements on Windows paths handling</li> 3134 <li>Fixes to the validation code (DTD and Schemas), xmlNodeGetPath() , 3135 HTML serialization, Namespace compliance, and a number of small 3136 problems</li> 3137 </ul> 3138 3139 <h3>2.4.25: Sep 26 2002</h3> 3140 <ul> 3141 <li>A number of bug fixes: XPath, validation, Python bindings, DOM and 3142 tree, xmlI/O, Html</li> 3143 <li>Serious rewrite of XInclude</li> 3144 <li>Made XML Schemas regexp part of the default build and APIs, small fix 3145 and improvement of the regexp core</li> 3146 <li>Changed the validation code to reuse XML Schemas regexp APIs</li> 3147 <li>Better handling of Windows file paths, improvement of Makefiles (Igor, 3148 Daniel Gehriger, Mark Vakoc)</li> 3149 <li>Improved the python I/O bindings, the tests, added resolver and regexp 3150 APIs</li> 3151 <li>New logos from Marc Liyanage</li> 3152 <li>Tutorial improvements: John Fleck, Christopher Harris</li> 3153 <li>Makefile: Fixes for AMD x86_64 (Mandrake), DESTDIR (Christophe 3154 Merlet)</li> 3155 <li>removal of all stderr/perror use for error reporting</li> 3156 <li>Better error reporting: XPath and DTD validation</li> 3157 <li>update of the trio portability layer (Bjorn Reese)</li> 3158 </ul> 3159 3160 <p><strong>2.4.24: Aug 22 2002</strong></p> 3161 <ul> 3162 <li>XPath fixes (William), xf:escape-uri() (Wesley Terpstra)</li> 3163 <li>Python binding fixes: makefiles (William), generator, rpm build, x86-64 3164 (fcrozat)</li> 3165 <li>HTML <style> and boolean attributes serializer fixes</li> 3166 <li>C14N improvements by Aleksey</li> 3167 <li>doc cleanups: Rick Jones</li> 3168 <li>Windows compiler makefile updates: Igor and Elizabeth Barham</li> 3169 <li>XInclude: implementation of fallback and xml:base fixup added</li> 3170 </ul> 3171 3172 <h3>2.4.23: July 6 2002</h3> 3173 <ul> 3174 <li>performances patches: Peter Jacobi</li> 3175 <li>c14n fixes, testsuite and performances: Aleksey Sanin</li> 3176 <li>added xmlDocFormatDump: Chema Celorio</li> 3177 <li>new tutorial: John Fleck</li> 3178 <li>new hash functions and performances: Sander Vesik, portability fix from 3179 Peter Jacobi</li> 3180 <li>a number of bug fixes: XPath (William Brack, Richard Jinks), XML and 3181 HTML parsers, ID lookup function</li> 3182 <li>removal of all remaining sprintf: Aleksey Sanin</li> 3183 </ul> 3184 3185 <h3>2.4.22: May 27 2002</h3> 3186 <ul> 3187 <li>a number of bug fixes: configure scripts, base handling, parser, memory 3188 usage, HTML parser, XPath, documentation (Christian Cornelssen), 3189 indentation, URI parsing</li> 3190 <li>Optimizations for XMLSec, fixing and making public some of the network 3191 protocol handlers (Aleksey)</li> 3192 <li>performance patch from Gary Pennington</li> 3193 <li>Charles Bozeman provided date and time support for XML Schemas 3194 datatypes</li> 3195 </ul> 3196 3197 <h3>2.4.21: Apr 29 2002</h3> 3198 3199 <p>This release is both a bug fix release and also contains the early XML 3200 Schemas <a href="http://www.w3.org/TR/xmlschema-1/">structures</a> and <a 3201 href="http://www.w3.org/TR/xmlschema-2/">datatypes</a> code, beware, all 3202 interfaces are likely to change, there is huge holes, it is clearly a work in 3203 progress and don't even think of putting this code in a production system, 3204 it's actually not compiled in by default. The real fixes are: 3205 </p> 3206 3207 <ul> 3208 <li>a couple of bugs or limitations introduced in 2.4.20</li> 3209 <li>patches for Borland C++ and MSC by Igor</li> 3210 <li>some fixes on XPath strings and conformance patches by Richard 3211 Jinks</li> 3212 <li>patch from Aleksey for the ExcC14N specification</li> 3213 <li>OSF/1 bug fix by Bjorn</li> 3214 </ul> 3215 3216 <h3>2.4.20: Apr 15 2002</h3> 3217 <ul> 3218 <li>bug fixes: file descriptor leak, XPath, HTML output, DTD validation</li> 3219 <li>XPath conformance testing by Richard Jinks</li> 3220 <li>Portability fixes: Solaris, MPE/iX, Windows, OSF/1, python bindings, 3221 libxml.m4</li> 3222 </ul> 3223 3224 <h3>2.4.19: Mar 25 2002</h3> 3225 <ul> 3226 <li>bug fixes: half a dozen XPath bugs, Validation, ISO-Latin to UTF8 3227 encoder</li> 3228 <li>portability fixes in the HTTP code</li> 3229 <li>memory allocation checks using valgrind, and profiling tests</li> 3230 <li>revamp of the Windows build and Makefiles</li> 3231 </ul> 3232 3233 <h3>2.4.18: Mar 18 2002</h3> 3234 <ul> 3235 <li>bug fixes: tree, SAX, canonicalization, validation, portability, 3236 XPath</li> 3237 <li>removed the --with-buffer option it was becoming unmaintainable</li> 3238 <li>serious cleanup of the Python makefiles</li> 3239 <li>speedup patch to XPath very effective for DocBook stylesheets</li> 3240 <li>Fixes for Windows build, cleanup of the documentation</li> 3241 </ul> 3242 3243 <h3>2.4.17: Mar 8 2002</h3> 3244 <ul> 3245 <li>a lot of bug fixes, including "namespace nodes have no parents in 3246 XPath"</li> 3247 <li>fixed/improved the Python wrappers, added more examples and more 3248 regression tests, XPath extension functions can now return node-sets</li> 3249 <li>added the XML Canonicalization support from Aleksey Sanin</li> 3250 </ul> 3251 3252 <h3>2.4.16: Feb 20 2002</h3> 3253 <ul> 3254 <li>a lot of bug fixes, most of them were triggered by the XML Testsuite 3255 from OASIS and W3C. Compliance has been significantly improved.</li> 3256 <li>a couple of portability fixes too.</li> 3257 </ul> 3258 3259 <h3>2.4.15: Feb 11 2002</h3> 3260 <ul> 3261 <li>Fixed the Makefiles, especially the python module ones</li> 3262 <li>A few bug fixes and cleanup</li> 3263 <li>Includes cleanup</li> 3264 </ul> 3265 3266 <h3>2.4.14: Feb 8 2002</h3> 3267 <ul> 3268 <li>Change of License to the <a 3269 href="http://www.opensource.org/licenses/mit-license.html">MIT 3270 License</a> basically for integration in XFree86 codebase, and removing 3271 confusion around the previous dual-licensing</li> 3272 <li>added Python bindings, beta software but should already be quite 3273 complete</li> 3274 <li>a large number of fixes and cleanups, especially for all tree 3275 manipulations</li> 3276 <li>cleanup of the headers, generation of a reference API definition in 3277 XML</li> 3278 </ul> 3279 3280 <h3>2.4.13: Jan 14 2002</h3> 3281 <ul> 3282 <li>update of the documentation: John Fleck and Charlie Bozeman</li> 3283 <li>cleanup of timing code from Justin Fletcher</li> 3284 <li>fixes for Windows and initial thread support on Win32: Igor and Serguei 3285 Narojnyi</li> 3286 <li>Cygwin patch from Robert Collins</li> 3287 <li>added xmlSetEntityReferenceFunc() for Keith Isdale work on xsldbg</li> 3288 </ul> 3289 3290 <h3>2.4.12: Dec 7 2001</h3> 3291 <ul> 3292 <li>a few bug fixes: thread (Gary Pennington), xmllint (Geert Kloosterman), 3293 XML parser (Robin Berjon), XPointer (Danny Jamshy), I/O cleanups 3294 (robert)</li> 3295 <li>Eric Lavigne contributed project files for MacOS</li> 3296 <li>some makefiles cleanups</li> 3297 </ul> 3298 3299 <h3>2.4.11: Nov 26 2001</h3> 3300 <ul> 3301 <li>fixed a couple of errors in the includes, fixed a few bugs, some code 3302 cleanups</li> 3303 <li>xmllint man pages improvement by Heiko Rupp</li> 3304 <li>updated VMS build instructions from John A Fotheringham</li> 3305 <li>Windows Makefiles updates from Igor</li> 3306 </ul> 3307 3308 <h3>2.4.10: Nov 10 2001</h3> 3309 <ul> 3310 <li>URI escaping fix (Joel Young)</li> 3311 <li>added xmlGetNodePath() (for paths or XPointers generation)</li> 3312 <li>Fixes namespace handling problems when using DTD and validation</li> 3313 <li>improvements on xmllint: Morus Walter patches for --format and 3314 --encode, Stefan Kost and Heiko Rupp improvements on the --shell</li> 3315 <li>fixes for xmlcatalog linking pointed by Weiqi Gao</li> 3316 <li>fixes to the HTML parser</li> 3317 </ul> 3318 3319 <h3>2.4.9: Nov 6 2001</h3> 3320 <ul> 3321 <li>fixes more catalog bugs</li> 3322 <li>avoid a compilation problem, improve xmlGetLineNo()</li> 3323 </ul> 3324 3325 <h3>2.4.8: Nov 4 2001</h3> 3326 <ul> 3327 <li>fixed SGML catalogs broken in previous release, updated xmlcatalog 3328 tool</li> 3329 <li>fixed a compile errors and some includes troubles.</li> 3330 </ul> 3331 3332 <h3>2.4.7: Oct 30 2001</h3> 3333 <ul> 3334 <li>exported some debugging interfaces</li> 3335 <li>serious rewrite of the catalog code</li> 3336 <li>integrated Gary Pennington thread safety patch, added configure option 3337 and regression tests</li> 3338 <li>removed an HTML parser bug</li> 3339 <li>fixed a couple of potentially serious validation bugs</li> 3340 <li>integrated the SGML DocBook support in xmllint</li> 3341 <li>changed the nanoftp anonymous login passwd</li> 3342 <li>some I/O cleanup and a couple of interfaces for Perl wrapper</li> 3343 <li>general bug fixes</li> 3344 <li>updated xmllint man page by John Fleck</li> 3345 <li>some VMS and Windows updates</li> 3346 </ul> 3347 3348 <h3>2.4.6: Oct 10 2001</h3> 3349 <ul> 3350 <li>added an updated man pages by John Fleck</li> 3351 <li>portability and configure fixes</li> 3352 <li>an infinite loop on the HTML parser was removed (William)</li> 3353 <li>Windows makefile patches from Igor</li> 3354 <li>fixed half a dozen bugs reported for libxml or libxslt</li> 3355 <li>updated xmlcatalog to be able to modify SGML super catalogs</li> 3356 </ul> 3357 3358 <h3>2.4.5: Sep 14 2001</h3> 3359 <ul> 3360 <li>Remove a few annoying bugs in 2.4.4</li> 3361 <li>forces the HTML serializer to output decimal charrefs since some 3362 version of Netscape can't handle hexadecimal ones</li> 3363 </ul> 3364 3365 <h3>1.8.16: Sep 14 2001</h3> 3366 <ul> 3367 <li>maintenance release of the old libxml1 branch, couple of bug and 3368 portability fixes</li> 3369 </ul> 3370 3371 <h3>2.4.4: Sep 12 2001</h3> 3372 <ul> 3373 <li>added --convert to xmlcatalog, bug fixes and cleanups of XML 3374 Catalog</li> 3375 <li>a few bug fixes and some portability changes</li> 3376 <li>some documentation cleanups</li> 3377 </ul> 3378 3379 <h3>2.4.3: Aug 23 2001</h3> 3380 <ul> 3381 <li>XML Catalog support see the doc</li> 3382 <li>New NaN/Infinity floating point code</li> 3383 <li>A few bug fixes</li> 3384 </ul> 3385 3386 <h3>2.4.2: Aug 15 2001</h3> 3387 <ul> 3388 <li>adds xmlLineNumbersDefault() to control line number generation</li> 3389 <li>lot of bug fixes</li> 3390 <li>the Microsoft MSC projects files should now be up to date</li> 3391 <li>inheritance of namespaces from DTD defaulted attributes</li> 3392 <li>fixes a serious potential security bug</li> 3393 <li>added a --format option to xmllint</li> 3394 </ul> 3395 3396 <h3>2.4.1: July 24 2001</h3> 3397 <ul> 3398 <li>possibility to keep line numbers in the tree</li> 3399 <li>some computation NaN fixes</li> 3400 <li>extension of the XPath API</li> 3401 <li>cleanup for alpha and ia64 targets</li> 3402 <li>patch to allow saving through HTTP PUT or POST</li> 3403 </ul> 3404 3405 <h3>2.4.0: July 10 2001</h3> 3406 <ul> 3407 <li>Fixed a few bugs in XPath, validation, and tree handling.</li> 3408 <li>Fixed XML Base implementation, added a couple of examples to the 3409 regression tests</li> 3410 <li>A bit of cleanup</li> 3411 </ul> 3412 3413 <h3>2.3.14: July 5 2001</h3> 3414 <ul> 3415 <li>fixed some entities problems and reduce memory requirement when 3416 substituting them</li> 3417 <li>lots of improvements in the XPath queries interpreter can be 3418 substantially faster</li> 3419 <li>Makefiles and configure cleanups</li> 3420 <li>Fixes to XPath variable eval, and compare on empty node set</li> 3421 <li>HTML tag closing bug fixed</li> 3422 <li>Fixed an URI reference computation problem when validating</li> 3423 </ul> 3424 3425 <h3>2.3.13: June 28 2001</h3> 3426 <ul> 3427 <li>2.3.12 configure.in was broken as well as the push mode XML parser</li> 3428 <li>a few more fixes for compilation on Windows MSC by Yon Derek</li> 3429 </ul> 3430 3431 <h3>1.8.14: June 28 2001</h3> 3432 <ul> 3433 <li>Zbigniew Chyla gave a patch to use the old XML parser in push mode</li> 3434 <li>Small Makefile fix</li> 3435 </ul> 3436 3437 <h3>2.3.12: June 26 2001</h3> 3438 <ul> 3439 <li>lots of cleanup</li> 3440 <li>a couple of validation fix</li> 3441 <li>fixed line number counting</li> 3442 <li>fixed serious problems in the XInclude processing</li> 3443 <li>added support for UTF8 BOM at beginning of entities</li> 3444 <li>fixed a strange gcc optimizer bugs in xpath handling of float, gcc-3.0 3445 miscompile uri.c (William), Thomas Leitner provided a fix for the 3446 optimizer on Tru64</li> 3447 <li>incorporated Yon Derek and Igor Zlatkovic fixes and improvements for 3448 compilation on Windows MSC</li> 3449 <li>update of libxml-doc.el (Felix Natter)</li> 3450 <li>fixed 2 bugs in URI normalization code</li> 3451 </ul> 3452 3453 <h3>2.3.11: June 17 2001</h3> 3454 <ul> 3455 <li>updates to trio, Makefiles and configure should fix some portability 3456 problems (alpha)</li> 3457 <li>fixed some HTML serialization problems (pre, script, and block/inline 3458 handling), added encoding aware APIs, cleanup of this code</li> 3459 <li>added xmlHasNsProp()</li> 3460 <li>implemented a specific PI for encoding support in the DocBook SGML 3461 parser</li> 3462 <li>some XPath fixes (-Infinity, / as a function parameter and namespaces 3463 node selection)</li> 3464 <li>fixed a performance problem and an error in the validation code</li> 3465 <li>fixed XInclude routine to implement the recursive behaviour</li> 3466 <li>fixed xmlFreeNode problem when libxml is included statically twice</li> 3467 <li>added --version to xmllint for bug reports</li> 3468 </ul> 3469 3470 <h3>2.3.10: June 1 2001</h3> 3471 <ul> 3472 <li>fixed the SGML catalog support</li> 3473 <li>a number of reported bugs got fixed, in XPath, iconv detection, 3474 XInclude processing</li> 3475 <li>XPath string function should now handle unicode correctly</li> 3476 </ul> 3477 3478 <h3>2.3.9: May 19 2001</h3> 3479 3480 <p>Lots of bugfixes, and added a basic SGML catalog support: 3481 </p> 3482 <ul> 3483 <li>HTML push bugfix #54891 and another patch from Jonas Borgstrom</li> 3484 <li>some serious speed optimization again</li> 3485 <li>some documentation cleanups</li> 3486 <li>trying to get better linking on Solaris (-R)</li> 3487 <li>XPath API cleanup from Thomas Broyer</li> 3488 <li>Validation bug fixed #54631, added a patch from Gary Pennington, fixed 3489 xmlValidGetValidElements()</li> 3490 <li>Added an INSTALL file</li> 3491 <li>Attribute removal added to API: #54433</li> 3492 <li>added a basic support for SGML catalogs</li> 3493 <li>fixed xmlKeepBlanksDefault(0) API</li> 3494 <li>bugfix in xmlNodeGetLang()</li> 3495 <li>fixed a small configure portability problem</li> 3496 <li>fixed an inversion of SYSTEM and PUBLIC identifier in HTML document</li> 3497 </ul> 3498 3499 <h3>1.8.13: May 14 2001</h3> 3500 <ul> 3501 <li>bugfixes release of the old libxml1 branch used by Gnome</li> 3502 </ul> 3503 3504 <h3>2.3.8: May 3 2001</h3> 3505 <ul> 3506 <li>Integrated an SGML DocBook parser for the Gnome project</li> 3507 <li>Fixed a few things in the HTML parser</li> 3508 <li>Fixed some XPath bugs raised by XSLT use, tried to fix the floating 3509 point portability issue</li> 3510 <li>Speed improvement (8M/s for SAX, 3M/s for DOM, 1.5M/s for 3511 DOM+validation using the XML REC as input and a 700MHz celeron).</li> 3512 <li>incorporated more Windows cleanup</li> 3513 <li>added xmlSaveFormatFile()</li> 3514 <li>fixed problems in copying nodes with entities references (gdome)</li> 3515 <li>removed some troubles surrounding the new validation module</li> 3516 </ul> 3517 3518 <h3>2.3.7: April 22 2001</h3> 3519 <ul> 3520 <li>lots of small bug fixes, corrected XPointer</li> 3521 <li>Non deterministic content model validation support</li> 3522 <li>added xmlDocCopyNode for gdome2</li> 3523 <li>revamped the way the HTML parser handles end of tags</li> 3524 <li>XPath: corrections of namespaces support and number formatting</li> 3525 <li>Windows: Igor Zlatkovic patches for MSC compilation</li> 3526 <li>HTML output fixes from P C Chow and William M. Brack</li> 3527 <li>Improved validation speed sensible for DocBook</li> 3528 <li>fixed a big bug with ID declared in external parsed entities</li> 3529 <li>portability fixes, update of Trio from Bjorn Reese</li> 3530 </ul> 3531 3532 <h3>2.3.6: April 8 2001</h3> 3533 <ul> 3534 <li>Code cleanup using extreme gcc compiler warning options, found and 3535 cleared half a dozen potential problem</li> 3536 <li>the Eazel team found an XML parser bug</li> 3537 <li>cleaned up the user of some of the string formatting function. used the 3538 trio library code to provide the one needed when the platform is missing 3539 them</li> 3540 <li>xpath: removed a memory leak and fixed the predicate evaluation 3541 problem, extended the testsuite and cleaned up the result. XPointer seems 3542 broken ...</li> 3543 </ul> 3544 3545 <h3>2.3.5: Mar 23 2001</h3> 3546 <ul> 3547 <li>Biggest change is separate parsing and evaluation of XPath expressions, 3548 there is some new APIs for this too</li> 3549 <li>included a number of bug fixes(XML push parser, 51876, notations, 3550 52299)</li> 3551 <li>Fixed some portability issues</li> 3552 </ul> 3553 3554 <h3>2.3.4: Mar 10 2001</h3> 3555 <ul> 3556 <li>Fixed bugs #51860 and #51861</li> 3557 <li>Added a global variable xmlDefaultBufferSize to allow default buffer 3558 size to be application tunable.</li> 3559 <li>Some cleanup in the validation code, still a bug left and this part 3560 should probably be rewritten to support ambiguous content model :-\</li> 3561 <li>Fix a couple of serious bugs introduced or raised by changes in 2.3.3 3562 parser</li> 3563 <li>Fixed another bug in xmlNodeGetContent()</li> 3564 <li>Bjorn fixed XPath node collection and Number formatting</li> 3565 <li>Fixed a loop reported in the HTML parsing</li> 3566 <li>blank space are reported even if the Dtd content model proves that they 3567 are formatting spaces, this is for XML conformance</li> 3568 </ul> 3569 3570 <h3>2.3.3: Mar 1 2001</h3> 3571 <ul> 3572 <li>small change in XPath for XSLT</li> 3573 <li>documentation cleanups</li> 3574 <li>fix in validation by Gary Pennington</li> 3575 <li>serious parsing performances improvements</li> 3576 </ul> 3577 3578 <h3>2.3.2: Feb 24 2001</h3> 3579 <ul> 3580 <li>chasing XPath bugs, found a bunch, completed some TODO</li> 3581 <li>fixed a Dtd parsing bug</li> 3582 <li>fixed a bug in xmlNodeGetContent</li> 3583 <li>ID/IDREF support partly rewritten by Gary Pennington</li> 3584 </ul> 3585 3586 <h3>2.3.1: Feb 15 2001</h3> 3587 <ul> 3588 <li>some XPath and HTML bug fixes for XSLT</li> 3589 <li>small extension of the hash table interfaces for DOM gdome2 3590 implementation</li> 3591 <li>A few bug fixes</li> 3592 </ul> 3593 3594 <h3>2.3.0: Feb 8 2001 (2.2.12 was on 25 Jan but I didn't kept track)</h3> 3595 <ul> 3596 <li>Lots of XPath bug fixes</li> 3597 <li>Add a mode with Dtd lookup but without validation error reporting for 3598 XSLT</li> 3599 <li>Add support for text node without escaping (XSLT)</li> 3600 <li>bug fixes for xmlCheckFilename</li> 3601 <li>validation code bug fixes from Gary Pennington</li> 3602 <li>Patch from Paul D. Smith correcting URI path normalization</li> 3603 <li>Patch to allow simultaneous install of libxml-devel and 3604 libxml2-devel</li> 3605 <li>the example Makefile is now fixed</li> 3606 <li>added HTML to the RPM packages</li> 3607 <li>tree copying bugfixes</li> 3608 <li>updates to Windows makefiles</li> 3609 <li>optimization patch from Bjorn Reese</li> 3610 </ul> 3611 3612 <h3>2.2.11: Jan 4 2001</h3> 3613 <ul> 3614 <li>bunch of bug fixes (memory I/O, xpath, ftp/http, ...)</li> 3615 <li>added htmlHandleOmittedElem()</li> 3616 <li>Applied Bjorn Reese's IPV6 first patch</li> 3617 <li>Applied Paul D. Smith patches for validation of XInclude results</li> 3618 <li>added XPointer xmlns() new scheme support</li> 3619 </ul> 3620 3621 <h3>2.2.10: Nov 25 2000</h3> 3622 <ul> 3623 <li>Fix the Windows problems of 2.2.8</li> 3624 <li>integrate OpenVMS patches</li> 3625 <li>better handling of some nasty HTML input</li> 3626 <li>Improved the XPointer implementation</li> 3627 <li>integrate a number of provided patches</li> 3628 </ul> 3629 3630 <h3>2.2.9: Nov 25 2000</h3> 3631 <ul> 3632 <li>erroneous release :-(</li> 3633 </ul> 3634 3635 <h3>2.2.8: Nov 13 2000</h3> 3636 <ul> 3637 <li>First version of <a href="http://www.w3.org/TR/xinclude">XInclude</a> 3638 support</li> 3639 <li>Patch in conditional section handling</li> 3640 <li>updated MS compiler project</li> 3641 <li>fixed some XPath problems</li> 3642 <li>added an URI escaping function</li> 3643 <li>some other bug fixes</li> 3644 </ul> 3645 3646 <h3>2.2.7: Oct 31 2000</h3> 3647 <ul> 3648 <li>added message redirection</li> 3649 <li>XPath improvements (thanks TOM !)</li> 3650 <li>xmlIOParseDTD() added</li> 3651 <li>various small fixes in the HTML, URI, HTTP and XPointer support</li> 3652 <li>some cleanup of the Makefile, autoconf and the distribution content</li> 3653 </ul> 3654 3655 <h3>2.2.6: Oct 25 2000:</h3> 3656 <ul> 3657 <li>Added an hash table module, migrated a number of internal structure to 3658 those</li> 3659 <li>Fixed a posteriori validation problems</li> 3660 <li>HTTP module cleanups</li> 3661 <li>HTML parser improvements (tag errors, script/style handling, attribute 3662 normalization)</li> 3663 <li>coalescing of adjacent text nodes</li> 3664 <li>couple of XPath bug fixes, exported the internal API</li> 3665 </ul> 3666 3667 <h3>2.2.5: Oct 15 2000:</h3> 3668 <ul> 3669 <li>XPointer implementation and testsuite</li> 3670 <li>Lot of XPath fixes, added variable and functions registration, more 3671 tests</li> 3672 <li>Portability fixes, lots of enhancements toward an easy Windows build 3673 and release</li> 3674 <li>Late validation fixes</li> 3675 <li>Integrated a lot of contributed patches</li> 3676 <li>added memory management docs</li> 3677 <li>a performance problem when using large buffer seems fixed</li> 3678 </ul> 3679 3680 <h3>2.2.4: Oct 1 2000:</h3> 3681 <ul> 3682 <li>main XPath problem fixed</li> 3683 <li>Integrated portability patches for Windows</li> 3684 <li>Serious bug fixes on the URI and HTML code</li> 3685 </ul> 3686 3687 <h3>2.2.3: Sep 17 2000</h3> 3688 <ul> 3689 <li>bug fixes</li> 3690 <li>cleanup of entity handling code</li> 3691 <li>overall review of all loops in the parsers, all sprintf usage has been 3692 checked too</li> 3693 <li>Far better handling of larges Dtd. Validating against DocBook XML Dtd 3694 works smoothly now.</li> 3695 </ul> 3696 3697 <h3>1.8.10: Sep 6 2000</h3> 3698 <ul> 3699 <li>bug fix release for some Gnome projects</li> 3700 </ul> 3701 3702 <h3>2.2.2: August 12 2000</h3> 3703 <ul> 3704 <li>mostly bug fixes</li> 3705 <li>started adding routines to access xml parser context options</li> 3706 </ul> 3707 3708 <h3>2.2.1: July 21 2000</h3> 3709 <ul> 3710 <li>a purely bug fixes release</li> 3711 <li>fixed an encoding support problem when parsing from a memory block</li> 3712 <li>fixed a DOCTYPE parsing problem</li> 3713 <li>removed a bug in the function allowing to override the memory 3714 allocation routines</li> 3715 </ul> 3716 3717 <h3>2.2.0: July 14 2000</h3> 3718 <ul> 3719 <li>applied a lot of portability fixes</li> 3720 <li>better encoding support/cleanup and saving (content is now always 3721 encoded in UTF-8)</li> 3722 <li>the HTML parser now correctly handles encodings</li> 3723 <li>added xmlHasProp()</li> 3724 <li>fixed a serious problem with &#38;</li> 3725 <li>propagated the fix to FTP client</li> 3726 <li>cleanup, bugfixes, etc ...</li> 3727 <li>Added a page about <a href="encoding.html">libxml Internationalization 3728 support</a></li> 3729 </ul> 3730 3731 <h3>1.8.9: July 9 2000</h3> 3732 <ul> 3733 <li>fixed the spec the RPMs should be better</li> 3734 <li>fixed a serious bug in the FTP implementation, released 1.8.9 to solve 3735 rpmfind users problem</li> 3736 </ul> 3737 3738 <h3>2.1.1: July 1 2000</h3> 3739 <ul> 3740 <li>fixes a couple of bugs in the 2.1.0 packaging</li> 3741 <li>improvements on the HTML parser</li> 3742 </ul> 3743 3744 <h3>2.1.0 and 1.8.8: June 29 2000</h3> 3745 <ul> 3746 <li>1.8.8 is mostly a commodity package for upgrading to libxml2 according 3747 to <a href="upgrade.html">new instructions</a>. It fixes a nasty problem 3748 about &#38; charref parsing</li> 3749 <li>2.1.0 also ease the upgrade from libxml v1 to the recent version. it 3750 also contains numerous fixes and enhancements: 3751 <ul> 3752 <li>added xmlStopParser() to stop parsing</li> 3753 <li>improved a lot parsing speed when there is large CDATA blocs</li> 3754 <li>includes XPath patches provided by Picdar Technology</li> 3755 <li>tried to fix as much as possible DTD validation and namespace 3756 related problems</li> 3757 <li>output to a given encoding has been added/tested</li> 3758 <li>lot of various fixes</li> 3759 </ul> 3760 </li> 3761 </ul> 3762 3763 <h3>2.0.0: Apr 12 2000</h3> 3764 <ul> 3765 <li>First public release of libxml2. If you are using libxml, it's a good 3766 idea to check the 1.x to 2.x upgrade instructions. NOTE: while initially 3767 scheduled for Apr 3 the release occurred only on Apr 12 due to massive 3768 workload.</li> 3769 <li>The include are now located under $prefix/include/libxml (instead of 3770 $prefix/include/gnome-xml), they also are referenced by 3771 <pre>#include <libxml/xxx.h></pre> 3772 <p>instead of</p> 3773 <pre>#include "xxx.h"</pre> 3774 </li> 3775 <li>a new URI module for parsing URIs and following strictly RFC 2396</li> 3776 <li>the memory allocation routines used by libxml can now be overloaded 3777 dynamically by using xmlMemSetup()</li> 3778 <li>The previously CVS only tool tester has been renamed 3779 <strong>xmllint</strong> and is now installed as part of the libxml2 3780 package</li> 3781 <li>The I/O interface has been revamped. There is now ways to plug in 3782 specific I/O modules, either at the URI scheme detection level using 3783 xmlRegisterInputCallbacks() or by passing I/O functions when creating a 3784 parser context using xmlCreateIOParserCtxt()</li> 3785 <li>there is a C preprocessor macro LIBXML_VERSION providing the version 3786 number of the libxml module in use</li> 3787 <li>a number of optional features of libxml can now be excluded at 3788 configure time (FTP/HTTP/HTML/XPath/Debug)</li> 3789 </ul> 3790 3791 <h3>2.0.0beta: Mar 14 2000</h3> 3792 <ul> 3793 <li>This is a first Beta release of libxml version 2</li> 3794 <li>It's available only from<a href="ftp://xmlsoft.org/libxml2/">xmlsoft.org 3795 FTP</a>, it's packaged as libxml2-2.0.0beta and available as tar and 3796 RPMs</li> 3797 <li>This version is now the head in the Gnome CVS base, the old one is 3798 available under the tag LIB_XML_1_X</li> 3799 <li>This includes a very large set of changes. From a programmatic point 3800 of view applications should not have to be modified too much, check the 3801 <a href="upgrade.html">upgrade page</a></li> 3802 <li>Some interfaces may changes (especially a bit about encoding).</li> 3803 <li>the updates includes: 3804 <ul> 3805 <li>fix I18N support. ISO-Latin-x/UTF-8/UTF-16 (nearly) seems correctly 3806 handled now</li> 3807 <li>Better handling of entities, especially well-formedness checking 3808 and proper PEref extensions in external subsets</li> 3809 <li>DTD conditional sections</li> 3810 <li>Validation now correctly handle entities content</li> 3811 <li><a href="http://rpmfind.net/tools/gdome/messages/0039.html">change 3812 structures to accommodate DOM</a></li> 3813 </ul> 3814 </li> 3815 <li>Serious progress were made toward compliance, <a 3816 href="conf/result.html">here are the result of the test</a> against the 3817 OASIS testsuite (except the Japanese tests since I don't support that 3818 encoding yet). This URL is rebuilt every couple of hours using the CVS 3819 head version.</li> 3820 </ul> 3821 3822 <h3>1.8.7: Mar 6 2000</h3> 3823 <ul> 3824 <li>This is a bug fix release:</li> 3825 <li>It is possible to disable the ignorable blanks heuristic used by 3826 libxml-1.x, a new function xmlKeepBlanksDefault(0) will allow this. Note 3827 that for adherence to XML spec, this behaviour will be disabled by 3828 default in 2.x . The same function will allow to keep compatibility for 3829 old code.</li> 3830 <li>Blanks in <a> </a> constructs are not ignored anymore, 3831 avoiding heuristic is really the Right Way :-\</li> 3832 <li>The unchecked use of snprintf which was breaking libxml-1.8.6 3833 compilation on some platforms has been fixed</li> 3834 <li>nanoftp.c nanohttp.c: Fixed '#' and '?' stripping when processing 3835 URIs</li> 3836 </ul> 3837 3838 <h3>1.8.6: Jan 31 2000</h3> 3839 <ul> 3840 <li>added a nanoFTP transport module, debugged until the new version of <a 3841 href="http://rpmfind.net/linux/rpm2html/rpmfind.html">rpmfind</a> can use 3842 it without troubles</li> 3843 </ul> 3844 3845 <h3>1.8.5: Jan 21 2000</h3> 3846 <ul> 3847 <li>adding APIs to parse a well balanced chunk of XML (production <a 3848 href="http://www.w3.org/TR/REC-xml#NT-content">[43] content</a> of the 3849 XML spec)</li> 3850 <li>fixed a hideous bug in xmlGetProp pointed by Rune.Djurhuus (a] fast.no</li> 3851 <li>Jody Goldberg <jgoldberg (a] home.com> provided another patch trying 3852 to solve the zlib checks problems</li> 3853 <li>The current state in gnome CVS base is expected to ship as 1.8.5 with 3854 gnumeric soon</li> 3855 </ul> 3856 3857 <h3>1.8.4: Jan 13 2000</h3> 3858 <ul> 3859 <li>bug fixes, reintroduced xmlNewGlobalNs(), fixed xmlNewNs()</li> 3860 <li>all exit() call should have been removed from libxml</li> 3861 <li>fixed a problem with INCLUDE_WINSOCK on WIN32 platform</li> 3862 <li>added newDocFragment()</li> 3863 </ul> 3864 3865 <h3>1.8.3: Jan 5 2000</h3> 3866 <ul> 3867 <li>a Push interface for the XML and HTML parsers</li> 3868 <li>a shell-like interface to the document tree (try tester --shell :-)</li> 3869 <li>lots of bug fixes and improvement added over XMas holidays</li> 3870 <li>fixed the DTD parsing code to work with the xhtml DTD</li> 3871 <li>added xmlRemoveProp(), xmlRemoveID() and xmlRemoveRef()</li> 3872 <li>Fixed bugs in xmlNewNs()</li> 3873 <li>External entity loading code has been revamped, now it uses 3874 xmlLoadExternalEntity(), some fix on entities processing were added</li> 3875 <li>cleaned up WIN32 includes of socket stuff</li> 3876 </ul> 3877 3878 <h3>1.8.2: Dec 21 1999</h3> 3879 <ul> 3880 <li>I got another problem with includes and C++, I hope this issue is fixed 3881 for good this time</li> 3882 <li>Added a few tree modification functions: xmlReplaceNode, 3883 xmlAddPrevSibling, xmlAddNextSibling, xmlNodeSetName and 3884 xmlDocSetRootElement</li> 3885 <li>Tried to improve the HTML output with help from <a 3886 href="mailto:clahey (a] umich.edu">Chris Lahey</a></li> 3887 </ul> 3888 3889 <h3>1.8.1: Dec 18 1999</h3> 3890 <ul> 3891 <li>various patches to avoid troubles when using libxml with C++ compilers 3892 the "namespace" keyword and C escaping in include files</li> 3893 <li>a problem in one of the core macros IS_CHAR was corrected</li> 3894 <li>fixed a bug introduced in 1.8.0 breaking default namespace processing, 3895 and more specifically the Dia application</li> 3896 <li>fixed a posteriori validation (validation after parsing, or by using a 3897 Dtd not specified in the original document)</li> 3898 <li>fixed a bug in</li> 3899 </ul> 3900 3901 <h3>1.8.0: Dec 12 1999</h3> 3902 <ul> 3903 <li>cleanup, especially memory wise</li> 3904 <li>the parser should be more reliable, especially the HTML one, it should 3905 not crash, whatever the input !</li> 3906 <li>Integrated various patches, especially a speedup improvement for large 3907 dataset from <a href="mailto:cnygard (a] bellatlantic.net">Carl Nygard</a>, 3908 configure with --with-buffers to enable them.</li> 3909 <li>attribute normalization, oops should have been added long ago !</li> 3910 <li>attributes defaulted from DTDs should be available, xmlSetProp() now 3911 does entities escaping by default.</li> 3912 </ul> 3913 3914 <h3>1.7.4: Oct 25 1999</h3> 3915 <ul> 3916 <li>Lots of HTML improvement</li> 3917 <li>Fixed some errors when saving both XML and HTML</li> 3918 <li>More examples, the regression tests should now look clean</li> 3919 <li>Fixed a bug with contiguous charref</li> 3920 </ul> 3921 3922 <h3>1.7.3: Sep 29 1999</h3> 3923 <ul> 3924 <li>portability problems fixed</li> 3925 <li>snprintf was used unconditionally, leading to link problems on system 3926 were it's not available, fixed</li> 3927 </ul> 3928 3929 <h3>1.7.1: Sep 24 1999</h3> 3930 <ul> 3931 <li>The basic type for strings manipulated by libxml has been renamed in 3932 1.7.1 from <strong>CHAR</strong> to <strong>xmlChar</strong>. The reason 3933 is that CHAR was conflicting with a predefined type on Windows. However 3934 on non WIN32 environment, compatibility is provided by the way of a 3935 <strong>#define </strong>.</li> 3936 <li>Changed another error : the use of a structure field called errno, and 3937 leading to troubles on platforms where it's a macro</li> 3938 </ul> 3939 3940 <h3>1.7.0: Sep 23 1999</h3> 3941 <ul> 3942 <li>Added the ability to fetch remote DTD or parsed entities, see the <a 3943 href="html/libxml-nanohttp.html">nanohttp</a> module.</li> 3944 <li>Added an errno to report errors by another mean than a simple printf 3945 like callback</li> 3946 <li>Finished ID/IDREF support and checking when validation</li> 3947 <li>Serious memory leaks fixed (there is now a <a 3948 href="html/libxml-xmlmemory.html">memory wrapper</a> module)</li> 3949 <li>Improvement of <a href="http://www.w3.org/TR/xpath">XPath</a> 3950 implementation</li> 3951 <li>Added an HTML parser front-end</li> 3952 </ul> 3953 3954 <h2><a name="XML">XML</a></h2> 3955 3956 <p><a href="http://www.w3.org/TR/REC-xml">XML is a standard</a> for 3957 markup-based structured documents. Here is <a name="example">an example XML 3958 document</a>:</p> 3959 <pre><?xml version="1.0"?> 3960 <EXAMPLE prop1="gnome is great" prop2="&amp; linux too"> 3961 <head> 3962 <title>Welcome to Gnome</title> 3963 </head> 3964 <chapter> 3965 <title>The Linux adventure</title> 3966 <p>bla bla bla ...</p> 3967 <image href="linus.gif"/> 3968 <p>...</p> 3969 </chapter> 3970 </EXAMPLE></pre> 3971 3972 <p>The first line specifies that it is an XML document and gives useful 3973 information about its encoding. Then the rest of the document is a text 3974 format whose structure is specified by tags between brackets. <strong>Each 3975 tag opened has to be closed</strong>. XML is pedantic about this. However, if 3976 a tag is empty (no content), a single tag can serve as both the opening and 3977 closing tag if it ends with <code>/></code> rather than with 3978 <code>></code>. Note that, for example, the image tag has no content (just 3979 an attribute) and is closed by ending the tag with <code>/></code>.</p> 3980 3981 <p>XML can be applied successfully to a wide range of tasks, ranging from 3982 long term structured document maintenance (where it follows the steps of 3983 SGML) to simple data encoding mechanisms like configuration file formatting 3984 (glade), spreadsheets (gnumeric), or even shorter lived documents such as 3985 WebDAV where it is used to encode remote calls between a client and a 3986 server.</p> 3987 3988 <h2><a name="XSLT">XSLT</a></h2> 3989 3990 <p>Check <a href="http://xmlsoft.org/XSLT">the separate libxslt page</a></p> 3991 3992 <p><a href="http://www.w3.org/TR/xslt">XSL Transformations</a>, is a 3993 language for transforming XML documents into other XML documents (or 3994 HTML/textual output).</p> 3995 3996 <p>A separate library called libxslt is available implementing XSLT-1.0 for 3997 libxml2. This module "libxslt" too can be found in the Gnome SVN base.</p> 3998 3999 <p>You can check the progresses on the libxslt <a 4000 href="http://xmlsoft.org/XSLT/ChangeLog.html">Changelog</a>.</p> 4001 4002 <h2><a name="Python">Python and bindings</a></h2> 4003 4004 <p>There are a number of language bindings and wrappers available for 4005 libxml2, the list below is not exhaustive. Please contact the <a 4006 href="http://mail.gnome.org/mailman/listinfo/xml-bindings">xml-bindings (a] gnome.org</a> 4007 (<a href="http://mail.gnome.org/archives/xml-bindings/">archives</a>) in 4008 order to get updates to this list or to discuss the specific topic of libxml2 4009 or libxslt wrappers or bindings:</p> 4010 <ul> 4011 <li><a href="http://libxmlplusplus.sourceforge.net/">Libxml++</a> seems the 4012 most up-to-date C++ bindings for libxml2, check the <a 4013 href="http://libxmlplusplus.sourceforge.net/reference/html/hierarchy.html">documentation</a> 4014 and the <a 4015 href="http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/libxmlplusplus/libxml%2b%2b/examples/">examples</a>.</li> 4016 <li>There is another <a href="http://libgdome-cpp.berlios.de/">C++ wrapper 4017 based on the gdome2 bindings</a> maintained by Tobias Peters.</li> 4018 <li>and a third C++ wrapper by Peter Jones <pjones (a] pmade.org> 4019 <p>Website: <a 4020 href="http://pmade.org/pjones/software/xmlwrapp/">http://pmade.org/pjones/software/xmlwrapp/</a></p> 4021 </li> 4022 <li>XML::LibXML <a href="http://cpan.uwinnipeg.ca/dist/XML-LibXML">Perl 4023 bindings</a> are available on CPAN, as well as XML::LibXSLT 4024 <a href="http://cpan.uwinnipeg.ca/dist/XML-LibXSLT">Perl libxslt 4025 bindings</a>.</li> 4026 <li>If you're interested into scripting XML processing, have a look at <a 4027 href="http://xsh.sourceforge.net/">XSH</a> an XML editing shell based on 4028 Libxml2 Perl bindings.</li> 4029 <li><a href="mailto:dkuhlman (a] cutter.rexx.com">Dave Kuhlman</a> provides an 4030 earlier version of the libxml/libxslt <a 4031 href="http://www.rexx.com/~dkuhlman">wrappers for Python</a>.</li> 4032 <li>Gopal.V and Peter Minten develop <a 4033 href="http://savannah.gnu.org/projects/libxmlsharp">libxml#</a>, a set of 4034 C# libxml2 bindings.</li> 4035 <li>Petr Kozelka provides <a 4036 href="http://sourceforge.net/projects/libxml2-pas">Pascal units to glue 4037 libxml2</a> with Kylix, Delphi and other Pascal compilers.</li> 4038 <li>Uwe Fechner also provides <a 4039 href="http://sourceforge.net/projects/idom2-pas/">idom2</a>, a DOM2 4040 implementation for Kylix2/D5/D6 from Borland.</li> 4041 <li>There is <a href="http://libxml.rubyforge.org/">bindings for Ruby</a> 4042 and libxml2 bindings are also available in Ruby through the <a 4043 href="http://libgdome-ruby.berlios.de/">libgdome-ruby</a> module 4044 maintained by Tobias Peters.</li> 4045 <li>Steve Ball and contributors maintains <a 4046 href="http://tclxml.sourceforge.net/">libxml2 and libxslt bindings for 4047 Tcl</a>.</li> 4048 <li>libxml2 and libxslt are the default XML libraries for PHP5.</li> 4049 <li><a href="http://savannah.gnu.org/projects/classpathx/">LibxmlJ</a> is 4050 an effort to create a 100% JAXP-compatible Java wrapper for libxml2 and 4051 libxslt as part of GNU ClasspathX project.</li> 4052 <li>Patrick McPhee provides Rexx bindings fof libxml2 and libxslt, look for 4053 <a href="http://www.interlog.com/~ptjm/software.html">RexxXML</a>.</li> 4054 <li><a 4055 href="http://www.satimage.fr/software/en/xml_suite.html">Satimage</a> 4056 provides <a 4057 href="http://www.satimage.fr/software/en/downloads_osaxen.html">XMLLib 4058 osax</a>. This is an osax for Mac OS X with a set of commands to 4059 implement in AppleScript the XML DOM, XPATH and XSLT. Also includes 4060 commands for Property-lists (Apple's fast lookup table XML format.)</li> 4061 <li>Francesco Montorsi developped <a 4062 href="https://sourceforge.net/project/showfiles.php?group_id=51305&package_id=45182">wxXml2</a> 4063 wrappers that interface libxml2, allowing wxWidgets applications to 4064 load/save/edit XML instances.</li> 4065 </ul> 4066 4067 <p>The distribution includes a set of Python bindings, which are guaranteed 4068 to be maintained as part of the library in the future, though the Python 4069 interface have not yet reached the completeness of the C API.</p> 4070 4071 <p>Note that some of the Python purist dislike the default set of Python 4072 bindings, rather than complaining I suggest they have a look at <a 4073 href="http://lxml.de/">lxml the more pythonic bindings for libxml2 4074 and libxslt</a> and <a 4075 href="http://lxml.de/mailinglist/">check the mailing-list</a>.</p> 4076 4077 <p><a href="mailto:stephane.bidoul (a] softwareag.com">Stphane Bidoul</a> 4078 maintains <a href="http://users.skynet.be/sbi/libxml-python/">a Windows port 4079 of the Python bindings</a>.</p> 4080 4081 <p>Note to people interested in building bindings, the API is formalized as 4082 <a href="libxml2-api.xml">an XML API description file</a> which allows to 4083 automate a large part of the Python bindings, this includes function 4084 descriptions, enums, structures, typedefs, etc... The Python script used to 4085 build the bindings is python/generator.py in the source distribution.</p> 4086 4087 <p>To install the Python bindings there are 2 options:</p> 4088 <ul> 4089 <li>If you use an RPM based distribution, simply install the <a 4090 href="http://rpmfind.net/linux/rpm2html/search.php?query=libxml2-python">libxml2-python 4091 RPM</a> (and if needed the <a 4092 href="http://rpmfind.net/linux/rpm2html/search.php?query=libxslt-python">libxslt-python 4093 RPM</a>).</li> 4094 <li>Otherwise use the <a href="ftp://xmlsoft.org/libxml2/python/">libxml2-python 4095 module distribution</a> corresponding to your installed version of 4096 libxml2 and libxslt. Note that to install it you will need both libxml2 4097 and libxslt installed and run "python setup.py build install" in the 4098 module tree.</li> 4099 </ul> 4100 4101 <p>The distribution includes a set of examples and regression tests for the 4102 python bindings in the <code>python/tests</code> directory. Here are some 4103 excerpts from those tests:</p> 4104 4105 <h3>tst.py:</h3> 4106 4107 <p>This is a basic test of the file interface and DOM navigation:</p> 4108 <pre>import libxml2, sys 4109 4110 doc = libxml2.parseFile("tst.xml") 4111 if doc.name != "tst.xml": 4112 print "doc.name failed" 4113 sys.exit(1) 4114 root = doc.children 4115 if root.name != "doc": 4116 print "root.name failed" 4117 sys.exit(1) 4118 child = root.children 4119 if child.name != "foo": 4120 print "child.name failed" 4121 sys.exit(1) 4122 doc.freeDoc()</pre> 4123 4124 <p>The Python module is called libxml2; parseFile is the equivalent of 4125 xmlParseFile (most of the bindings are automatically generated, and the xml 4126 prefix is removed and the casing convention are kept). All node seen at the 4127 binding level share the same subset of accessors:</p> 4128 <ul> 4129 <li><code>name</code> : returns the node name</li> 4130 <li><code>type</code> : returns a string indicating the node type</li> 4131 <li><code>content</code> : returns the content of the node, it is based on 4132 xmlNodeGetContent() and hence is recursive.</li> 4133 <li><code>parent</code> , <code>children</code>, <code>last</code>, 4134 <code>next</code>, <code>prev</code>, <code>doc</code>, 4135 <code>properties</code>: pointing to the associated element in the tree, 4136 those may return None in case no such link exists.</li> 4137 </ul> 4138 4139 <p>Also note the need to explicitly deallocate documents with freeDoc() . 4140 Reference counting for libxml2 trees would need quite a lot of work to 4141 function properly, and rather than risk memory leaks if not implemented 4142 correctly it sounds safer to have an explicit function to free a tree. The 4143 wrapper python objects like doc, root or child are them automatically garbage 4144 collected.</p> 4145 4146 <h3>validate.py:</h3> 4147 4148 <p>This test check the validation interfaces and redirection of error 4149 messages:</p> 4150 <pre>import libxml2 4151 4152 #deactivate error messages from the validation 4153 def noerr(ctx, str): 4154 pass 4155 4156 libxml2.registerErrorHandler(noerr, None) 4157 4158 ctxt = libxml2.createFileParserCtxt("invalid.xml") 4159 ctxt.validate(1) 4160 ctxt.parseDocument() 4161 doc = ctxt.doc() 4162 valid = ctxt.isValid() 4163 doc.freeDoc() 4164 if valid != 0: 4165 print "validity check failed"</pre> 4166 4167 <p>The first thing to notice is the call to registerErrorHandler(), it 4168 defines a new error handler global to the library. It is used to avoid seeing 4169 the error messages when trying to validate the invalid document.</p> 4170 4171 <p>The main interest of that test is the creation of a parser context with 4172 createFileParserCtxt() and how the behaviour can be changed before calling 4173 parseDocument() . Similarly the information resulting from the parsing phase 4174 is also available using context methods.</p> 4175 4176 <p>Contexts like nodes are defined as class and the libxml2 wrappers maps the 4177 C function interfaces in terms of objects method as much as possible. The 4178 best to get a complete view of what methods are supported is to look at the 4179 libxml2.py module containing all the wrappers.</p> 4180 4181 <h3>push.py:</h3> 4182 4183 <p>This test show how to activate the push parser interface:</p> 4184 <pre>import libxml2 4185 4186 ctxt = libxml2.createPushParser(None, "<foo", 4, "test.xml") 4187 ctxt.parseChunk("/>", 2, 1) 4188 doc = ctxt.doc() 4189 4190 doc.freeDoc()</pre> 4191 4192 <p>The context is created with a special call based on the 4193 xmlCreatePushParser() from the C library. The first argument is an optional 4194 SAX callback object, then the initial set of data, the length and the name of 4195 the resource in case URI-References need to be computed by the parser.</p> 4196 4197 <p>Then the data are pushed using the parseChunk() method, the last call 4198 setting the third argument terminate to 1.</p> 4199 4200 <h3>pushSAX.py:</h3> 4201 4202 <p>this test show the use of the event based parsing interfaces. In this case 4203 the parser does not build a document, but provides callback information as 4204 the parser makes progresses analyzing the data being provided:</p> 4205 <pre>import libxml2 4206 log = "" 4207 4208 class callback: 4209 def startDocument(self): 4210 global log 4211 log = log + "startDocument:" 4212 4213 def endDocument(self): 4214 global log 4215 log = log + "endDocument:" 4216 4217 def startElement(self, tag, attrs): 4218 global log 4219 log = log + "startElement %s %s:" % (tag, attrs) 4220 4221 def endElement(self, tag): 4222 global log 4223 log = log + "endElement %s:" % (tag) 4224 4225 def characters(self, data): 4226 global log 4227 log = log + "characters: %s:" % (data) 4228 4229 def warning(self, msg): 4230 global log 4231 log = log + "warning: %s:" % (msg) 4232 4233 def error(self, msg): 4234 global log 4235 log = log + "error: %s:" % (msg) 4236 4237 def fatalError(self, msg): 4238 global log 4239 log = log + "fatalError: %s:" % (msg) 4240 4241 handler = callback() 4242 4243 ctxt = libxml2.createPushParser(handler, "<foo", 4, "test.xml") 4244 chunk = " url='tst'>b" 4245 ctxt.parseChunk(chunk, len(chunk), 0) 4246 chunk = "ar</foo>" 4247 ctxt.parseChunk(chunk, len(chunk), 1) 4248 4249 reference = "startDocument:startElement foo {'url': 'tst'}:" + \ 4250 "characters: bar:endElement foo:endDocument:" 4251 if log != reference: 4252 print "Error got: %s" % log 4253 print "Expected: %s" % reference</pre> 4254 4255 <p>The key object in that test is the handler, it provides a number of entry 4256 points which can be called by the parser as it makes progresses to indicate 4257 the information set obtained. The full set of callback is larger than what 4258 the callback class in that specific example implements (see the SAX 4259 definition for a complete list). The wrapper will only call those supplied by 4260 the object when activated. The startElement receives the names of the element 4261 and a dictionary containing the attributes carried by this element.</p> 4262 4263 <p>Also note that the reference string generated from the callback shows a 4264 single character call even though the string "bar" is passed to the parser 4265 from 2 different call to parseChunk()</p> 4266 4267 <h3>xpath.py:</h3> 4268 4269 <p>This is a basic test of XPath wrappers support</p> 4270 <pre>import libxml2 4271 4272 doc = libxml2.parseFile("tst.xml") 4273 ctxt = doc.xpathNewContext() 4274 res = ctxt.xpathEval("//*") 4275 if len(res) != 2: 4276 print "xpath query: wrong node set size" 4277 sys.exit(1) 4278 if res[0].name != "doc" or res[1].name != "foo": 4279 print "xpath query: wrong node set value" 4280 sys.exit(1) 4281 doc.freeDoc() 4282 ctxt.xpathFreeContext()</pre> 4283 4284 <p>This test parses a file, then create an XPath context to evaluate XPath 4285 expression on it. The xpathEval() method execute an XPath query and returns 4286 the result mapped in a Python way. String and numbers are natively converted, 4287 and node sets are returned as a tuple of libxml2 Python nodes wrappers. Like 4288 the document, the XPath context need to be freed explicitly, also not that 4289 the result of the XPath query may point back to the document tree and hence 4290 the document must be freed after the result of the query is used.</p> 4291 4292 <h3>xpathext.py:</h3> 4293 4294 <p>This test shows how to extend the XPath engine with functions written in 4295 python:</p> 4296 <pre>import libxml2 4297 4298 def foo(ctx, x): 4299 return x + 1 4300 4301 doc = libxml2.parseFile("tst.xml") 4302 ctxt = doc.xpathNewContext() 4303 libxml2.registerXPathFunction(ctxt._o, "foo", None, foo) 4304 res = ctxt.xpathEval("foo(1)") 4305 if res != 2: 4306 print "xpath extension failure" 4307 doc.freeDoc() 4308 ctxt.xpathFreeContext()</pre> 4309 4310 <p>Note how the extension function is registered with the context (but that 4311 part is not yet finalized, this may change slightly in the future).</p> 4312 4313 <h3>tstxpath.py:</h3> 4314 4315 <p>This test is similar to the previous one but shows how the extension 4316 function can access the XPath evaluation context:</p> 4317 <pre>def foo(ctx, x): 4318 global called 4319 4320 # 4321 # test that access to the XPath evaluation contexts 4322 # 4323 pctxt = libxml2.xpathParserContext(_obj=ctx) 4324 ctxt = pctxt.context() 4325 called = ctxt.function() 4326 return x + 1</pre> 4327 4328 <p>All the interfaces around the XPath parser(or rather evaluation) context 4329 are not finalized, but it should be sufficient to do contextual work at the 4330 evaluation point.</p> 4331 4332 <h3>Memory debugging:</h3> 4333 4334 <p>last but not least, all tests starts with the following prologue:</p> 4335 <pre>#memory debug specific 4336 libxml2.debugMemory(1)</pre> 4337 4338 <p>and ends with the following epilogue:</p> 4339 <pre>#memory debug specific 4340 libxml2.cleanupParser() 4341 if libxml2.debugMemory(1) == 0: 4342 print "OK" 4343 else: 4344 print "Memory leak %d bytes" % (libxml2.debugMemory(1)) 4345 libxml2.dumpMemory()</pre> 4346 4347 <p>Those activate the memory debugging interface of libxml2 where all 4348 allocated block in the library are tracked. The prologue then cleans up the 4349 library state and checks that all allocated memory has been freed. If not it 4350 calls dumpMemory() which saves that list in a <code>.memdump</code> file.</p> 4351 4352 <h2><a name="architecture">libxml2 architecture</a></h2> 4353 4354 <p>Libxml2 is made of multiple components; some of them are optional, and 4355 most of the block interfaces are public. The main components are:</p> 4356 <ul> 4357 <li>an Input/Output layer</li> 4358 <li>FTP and HTTP client layers (optional)</li> 4359 <li>an Internationalization layer managing the encodings support</li> 4360 <li>a URI module</li> 4361 <li>the XML parser and its basic SAX interface</li> 4362 <li>an HTML parser using the same SAX interface (optional)</li> 4363 <li>a SAX tree module to build an in-memory DOM representation</li> 4364 <li>a tree module to manipulate the DOM representation</li> 4365 <li>a validation module using the DOM representation (optional)</li> 4366 <li>an XPath module for global lookup in a DOM representation 4367 (optional)</li> 4368 <li>a debug module (optional)</li> 4369 </ul> 4370 4371 <p>Graphically this gives the following:</p> 4372 4373 <p><img src="libxml.gif" alt="a graphical view of the various"></p> 4374 4375 <p></p> 4376 4377 <h2><a name="tree">The tree output</a></h2> 4378 4379 <p>The parser returns a tree built during the document analysis. The value 4380 returned is an <strong>xmlDocPtr</strong> (i.e., a pointer to an 4381 <strong>xmlDoc</strong> structure). This structure contains information such 4382 as the file name, the document type, and a <strong>children</strong> pointer 4383 which is the root of the document (or more exactly the first child under the 4384 root which is the document). The tree is made of <strong>xmlNode</strong>s, 4385 chained in double-linked lists of siblings and with a children<->parent 4386 relationship. An xmlNode can also carry properties (a chain of xmlAttr 4387 structures). An attribute may have a value which is a list of TEXT or 4388 ENTITY_REF nodes.</p> 4389 4390 <p>Here is an example (erroneous with respect to the XML spec since there 4391 should be only one ELEMENT under the root):</p> 4392 4393 <p><img src="structure.gif" alt=" structure.gif "></p> 4394 4395 <p>In the source package there is a small program (not installed by default) 4396 called <strong>xmllint</strong> which parses XML files given as argument and 4397 prints them back as parsed. This is useful for detecting errors both in XML 4398 code and in the XML parser itself. It has an option <strong>--debug</strong> 4399 which prints the actual in-memory structure of the document; here is the 4400 result with the <a href="#example">example</a> given before:</p> 4401 <pre>DOCUMENT 4402 version=1.0 4403 standalone=true 4404 ELEMENT EXAMPLE 4405 ATTRIBUTE prop1 4406 TEXT 4407 content=gnome is great 4408 ATTRIBUTE prop2 4409 ENTITY_REF 4410 TEXT 4411 content= linux too 4412 ELEMENT head 4413 ELEMENT title 4414 TEXT 4415 content=Welcome to Gnome 4416 ELEMENT chapter 4417 ELEMENT title 4418 TEXT 4419 content=The Linux adventure 4420 ELEMENT p 4421 TEXT 4422 content=bla bla bla ... 4423 ELEMENT image 4424 ATTRIBUTE href 4425 TEXT 4426 content=linus.gif 4427 ELEMENT p 4428 TEXT 4429 content=...</pre> 4430 4431 <p>This should be useful for learning the internal representation model.</p> 4432 4433 <h2><a name="interface">The SAX interface</a></h2> 4434 4435 <p>Sometimes the DOM tree output is just too large to fit reasonably into 4436 memory. In that case (and if you don't expect to save back the XML document 4437 loaded using libxml), it's better to use the SAX interface of libxml. SAX is 4438 a <strong>callback-based interface</strong> to the parser. Before parsing, 4439 the application layer registers a customized set of callbacks which are 4440 called by the library as it progresses through the XML input.</p> 4441 4442 <p>To get more detailed step-by-step guidance on using the SAX interface of 4443 libxml, see the <a 4444 href="http://www.jamesh.id.au/articles/libxml-sax/libxml-sax.html">nice 4445 documentation</a>.written by <a href="mailto:james (a] daa.com.au">James 4446 Henstridge</a>.</p> 4447 4448 <p>You can debug the SAX behaviour by using the <strong>testSAX</strong> 4449 program located in the gnome-xml module (it's usually not shipped in the 4450 binary packages of libxml, but you can find it in the tar source 4451 distribution). Here is the sequence of callbacks that would be reported by 4452 testSAX when parsing the example XML document shown earlier:</p> 4453 <pre>SAX.setDocumentLocator() 4454 SAX.startDocument() 4455 SAX.getEntity(amp) 4456 SAX.startElement(EXAMPLE, prop1='gnome is great', prop2='&amp; linux too') 4457 SAX.characters( , 3) 4458 SAX.startElement(head) 4459 SAX.characters( , 4) 4460 SAX.startElement(title) 4461 SAX.characters(Welcome to Gnome, 16) 4462 SAX.endElement(title) 4463 SAX.characters( , 3) 4464 SAX.endElement(head) 4465 SAX.characters( , 3) 4466 SAX.startElement(chapter) 4467 SAX.characters( , 4) 4468 SAX.startElement(title) 4469 SAX.characters(The Linux adventure, 19) 4470 SAX.endElement(title) 4471 SAX.characters( , 4) 4472 SAX.startElement(p) 4473 SAX.characters(bla bla bla ..., 15) 4474 SAX.endElement(p) 4475 SAX.characters( , 4) 4476 SAX.startElement(image, href='linus.gif') 4477 SAX.endElement(image) 4478 SAX.characters( , 4) 4479 SAX.startElement(p) 4480 SAX.characters(..., 3) 4481 SAX.endElement(p) 4482 SAX.characters( , 3) 4483 SAX.endElement(chapter) 4484 SAX.characters( , 1) 4485 SAX.endElement(EXAMPLE) 4486 SAX.endDocument()</pre> 4487 4488 <p>Most of the other interfaces of libxml2 are based on the DOM tree-building 4489 facility, so nearly everything up to the end of this document presupposes the 4490 use of the standard DOM tree build. Note that the DOM tree itself is built by 4491 a set of registered default callbacks, without internal specific 4492 interface.</p> 4493 4494 <h2><a name="Validation">Validation & DTDs</a></h2> 4495 4496 <p>Table of Content:</p> 4497 <ol> 4498 <li><a href="#General5">General overview</a></li> 4499 <li><a href="#definition">The definition</a></li> 4500 <li><a href="#Simple">Simple rules</a> 4501 <ol> 4502 <li><a href="#reference">How to reference a DTD from a document</a></li> 4503 <li><a href="#Declaring">Declaring elements</a></li> 4504 <li><a href="#Declaring1">Declaring attributes</a></li> 4505 </ol> 4506 </li> 4507 <li><a href="#Some">Some examples</a></li> 4508 <li><a href="#validate">How to validate</a></li> 4509 <li><a href="#Other">Other resources</a></li> 4510 </ol> 4511 4512 <h3><a name="General5">General overview</a></h3> 4513 4514 <p>Well what is validation and what is a DTD ?</p> 4515 4516 <p>DTD is the acronym for Document Type Definition. This is a description of 4517 the content for a family of XML files. This is part of the XML 1.0 4518 specification, and allows one to describe and verify that a given document 4519 instance conforms to the set of rules detailing its structure and content.</p> 4520 4521 <p>Validation is the process of checking a document against a DTD (more 4522 generally against a set of construction rules).</p> 4523 4524 <p>The validation process and building DTDs are the two most difficult parts 4525 of the XML life cycle. Briefly a DTD defines all the possible elements to be 4526 found within your document, what is the formal shape of your document tree 4527 (by defining the allowed content of an element; either text, a regular 4528 expression for the allowed list of children, or mixed content i.e. both text 4529 and children). The DTD also defines the valid attributes for all elements and 4530 the types of those attributes.</p> 4531 4532 <h3><a name="definition1">The definition</a></h3> 4533 4534 <p>The <a href="http://www.w3.org/TR/REC-xml">W3C XML Recommendation</a> (<a 4535 href="http://www.xml.com/axml/axml.html">Tim Bray's annotated version of 4536 Rev1</a>):</p> 4537 <ul> 4538 <li><a href="http://www.w3.org/TR/REC-xml#elemdecls">Declaring 4539 elements</a></li> 4540 <li><a href="http://www.w3.org/TR/REC-xml#attdecls">Declaring 4541 attributes</a></li> 4542 </ul> 4543 4544 <p>(unfortunately) all this is inherited from the SGML world, the syntax is 4545 ancient...</p> 4546 4547 <h3><a name="Simple1">Simple rules</a></h3> 4548 4549 <p>Writing DTDs can be done in many ways. The rules to build them if you need 4550 something permanent or something which can evolve over time can be radically 4551 different. Really complex DTDs like DocBook ones are flexible but quite 4552 harder to design. I will just focus on DTDs for a formats with a fixed simple 4553 structure. It is just a set of basic rules, and definitely not exhaustive nor 4554 usable for complex DTD design.</p> 4555 4556 <h4><a name="reference1">How to reference a DTD from a document</a>:</h4> 4557 4558 <p>Assuming the top element of the document is <code>spec</code> and the dtd 4559 is placed in the file <code>mydtd</code> in the subdirectory 4560 <code>dtds</code> of the directory from where the document were loaded:</p> 4561 4562 <p><code><!DOCTYPE spec SYSTEM "dtds/mydtd"></code></p> 4563 4564 <p>Notes:</p> 4565 <ul> 4566 <li>The system string is actually an URI-Reference (as defined in <a 4567 href="http://www.ietf.org/rfc/rfc2396.txt">RFC 2396</a>) so you can use a 4568 full URL string indicating the location of your DTD on the Web. This is a 4569 really good thing to do if you want others to validate your document.</li> 4570 <li>It is also possible to associate a <code>PUBLIC</code> identifier (a 4571 magic string) so that the DTD is looked up in catalogs on the client side 4572 without having to locate it on the web.</li> 4573 <li>A DTD contains a set of element and attribute declarations, but they 4574 don't define what the root of the document should be. This is explicitly 4575 told to the parser/validator as the first element of the 4576 <code>DOCTYPE</code> declaration.</li> 4577 </ul> 4578 4579 <h4><a name="Declaring2">Declaring elements</a>:</h4> 4580 4581 <p>The following declares an element <code>spec</code>:</p> 4582 4583 <p><code><!ELEMENT spec (front, body, back?)></code></p> 4584 4585 <p>It also expresses that the spec element contains one <code>front</code>, 4586 one <code>body</code> and one optional <code>back</code> children elements in 4587 this order. The declaration of one element of the structure and its content 4588 are done in a single declaration. Similarly the following declares 4589 <code>div1</code> elements:</p> 4590 4591 <p><code><!ELEMENT div1 (head, (p | list | note)*, div2?)></code></p> 4592 4593 <p>which means div1 contains one <code>head</code> then a series of optional 4594 <code>p</code>, <code>list</code>s and <code>note</code>s and then an 4595 optional <code>div2</code>. And last but not least an element can contain 4596 text:</p> 4597 4598 <p><code><!ELEMENT b (#PCDATA)></code></p> 4599 4600 <p><code>b</code> contains text or being of mixed content (text and elements 4601 in no particular order):</p> 4602 4603 <p><code><!ELEMENT p (#PCDATA|a|ul|b|i|em)*></code></p> 4604 4605 <p><code>p </code>can contain text or <code>a</code>, <code>ul</code>, 4606 <code>b</code>, <code>i </code>or <code>em</code> elements in no particular 4607 order.</p> 4608 4609 <h4><a name="Declaring1">Declaring attributes</a>:</h4> 4610 4611 <p>Again the attributes declaration includes their content definition:</p> 4612 4613 <p><code><!ATTLIST termdef name CDATA #IMPLIED></code></p> 4614 4615 <p>means that the element <code>termdef</code> can have a <code>name</code> 4616 attribute containing text (<code>CDATA</code>) and which is optional 4617 (<code>#IMPLIED</code>). The attribute value can also be defined within a 4618 set:</p> 4619 4620 <p><code><!ATTLIST list type (bullets|ordered|glossary) 4621 "ordered"></code></p> 4622 4623 <p>means <code>list</code> element have a <code>type</code> attribute with 3 4624 allowed values "bullets", "ordered" or "glossary" and which default to 4625 "ordered" if the attribute is not explicitly specified.</p> 4626 4627 <p>The content type of an attribute can be text (<code>CDATA</code>), 4628 anchor/reference/references 4629 (<code>ID</code>/<code>IDREF</code>/<code>IDREFS</code>), entity(ies) 4630 (<code>ENTITY</code>/<code>ENTITIES</code>) or name(s) 4631 (<code>NMTOKEN</code>/<code>NMTOKENS</code>). The following defines that a 4632 <code>chapter</code> element can have an optional <code>id</code> attribute 4633 of type <code>ID</code>, usable for reference from attribute of type 4634 IDREF:</p> 4635 4636 <p><code><!ATTLIST chapter id ID #IMPLIED></code></p> 4637 4638 <p>The last value of an attribute definition can be <code>#REQUIRED 4639 </code>meaning that the attribute has to be given, <code>#IMPLIED</code> 4640 meaning that it is optional, or the default value (possibly prefixed by 4641 <code>#FIXED</code> if it is the only allowed).</p> 4642 4643 <p>Notes:</p> 4644 <ul> 4645 <li>Usually the attributes pertaining to a given element are declared in a 4646 single expression, but it is just a convention adopted by a lot of DTD 4647 writers: 4648 <pre><!ATTLIST termdef 4649 id ID #REQUIRED 4650 name CDATA #IMPLIED></pre> 4651 <p>The previous construct defines both <code>id</code> and 4652 <code>name</code> attributes for the element <code>termdef</code>.</p> 4653 </li> 4654 </ul> 4655 4656 <h3><a name="Some1">Some examples</a></h3> 4657 4658 <p>The directory <code>test/valid/dtds/</code> in the libxml2 distribution 4659 contains some complex DTD examples. The example in the file 4660 <code>test/valid/dia.xml</code> shows an XML file where the simple DTD is 4661 directly included within the document.</p> 4662 4663 <h3><a name="validate1">How to validate</a></h3> 4664 4665 <p>The simplest way is to use the xmllint program included with libxml. The 4666 <code>--valid</code> option turns-on validation of the files given as input. 4667 For example the following validates a copy of the first revision of the XML 4668 1.0 specification:</p> 4669 4670 <p><code>xmllint --valid --noout test/valid/REC-xml-19980210.xml</code></p> 4671 4672 <p>the -- noout is used to disable output of the resulting tree.</p> 4673 4674 <p>The <code>--dtdvalid dtd</code> allows validation of the document(s) 4675 against a given DTD.</p> 4676 4677 <p>Libxml2 exports an API to handle DTDs and validation, check the <a 4678 href="http://xmlsoft.org/html/libxml-valid.html">associated 4679 description</a>.</p> 4680 4681 <h3><a name="Other1">Other resources</a></h3> 4682 4683 <p>DTDs are as old as SGML. So there may be a number of examples on-line, I 4684 will just list one for now, others pointers welcome:</p> 4685 <ul> 4686 <li><a href="http://www.xml101.com:8081/dtd/">XML-101 DTD</a></li> 4687 </ul> 4688 4689 <p>I suggest looking at the examples found under test/valid/dtd and any of 4690 the large number of books available on XML. The dia example in test/valid 4691 should be both simple and complete enough to allow you to build your own.</p> 4692 4693 <p></p> 4694 4695 <h2><a name="Memory">Memory Management</a></h2> 4696 4697 <p>Table of Content:</p> 4698 <ol> 4699 <li><a href="#General3">General overview</a></li> 4700 <li><a href="#setting">Setting libxml2 set of memory routines</a></li> 4701 <li><a href="#cleanup">Cleaning up after using the library</a></li> 4702 <li><a href="#Debugging">Debugging routines</a></li> 4703 <li><a href="#General4">General memory requirements</a></li> 4704 <li><a href="#Compacting">Returning memory to the kernel</a></li> 4705 </ol> 4706 4707 <h3><a name="General3">General overview</a></h3> 4708 4709 <p>The module <code><a 4710 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlmemory.h</a></code> 4711 provides the interfaces to the libxml2 memory system:</p> 4712 <ul> 4713 <li>libxml2 does not use the libc memory allocator directly but xmlFree(), 4714 xmlMalloc() and xmlRealloc()</li> 4715 <li>those routines can be reallocated to a specific set of routine, by 4716 default the libc ones i.e. free(), malloc() and realloc()</li> 4717 <li>the xmlmemory.c module includes a set of debugging routine</li> 4718 </ul> 4719 4720 <h3><a name="setting">Setting libxml2 set of memory routines</a></h3> 4721 4722 <p>It is sometimes useful to not use the default memory allocator, either for 4723 debugging, analysis or to implement a specific behaviour on memory management 4724 (like on embedded systems). Two function calls are available to do so:</p> 4725 <ul> 4726 <li><a href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemGet 4727 ()</a> which return the current set of functions in use by the parser</li> 4728 <li><a 4729 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemSetup()</a> 4730 which allow to set up a new set of memory allocation functions</li> 4731 </ul> 4732 4733 <p>Of course a call to xmlMemSetup() should probably be done before calling 4734 any other libxml2 routines (unless you are sure your allocations routines are 4735 compatibles).</p> 4736 4737 <h3><a name="cleanup">Cleaning up after using the library</a></h3> 4738 4739 <p>Libxml2 is not stateless, there is a few set of memory structures needing 4740 allocation before the parser is fully functional (some encoding structures 4741 for example). This also mean that once parsing is finished there is a tiny 4742 amount of memory (a few hundred bytes) which can be recollected if you don't 4743 reuse the library or any document built with it:</p> 4744 <ul> 4745 <li><a href="http://xmlsoft.org/html/libxml-parser.html">xmlCleanupParser 4746 ()</a> is a centralized routine to free the library state and data. Note 4747 that it won't deallocate any produced tree if any (use the xmlFreeDoc() 4748 and related routines for this). This should be called only when the library 4749 is not used anymore.</li> 4750 <li><a href="http://xmlsoft.org/html/libxml-parser.html">xmlInitParser 4751 ()</a> is the dual routine allowing to preallocate the parsing state 4752 which can be useful for example to avoid initialization reentrancy 4753 problems when using libxml2 in multithreaded applications</li> 4754 </ul> 4755 4756 <p>Generally xmlCleanupParser() is safe assuming no parsing is ongoing and 4757 no document is still being used, if needed the state will be rebuild at the 4758 next invocation of parser routines (or by xmlInitParser()), but be careful 4759 of the consequences in multithreaded applications.</p> 4760 4761 <h3><a name="Debugging">Debugging routines</a></h3> 4762 4763 <p>When configured using --with-mem-debug flag (off by default), libxml2 uses 4764 a set of memory allocation debugging routines keeping track of all allocated 4765 blocks and the location in the code where the routine was called. A couple of 4766 other debugging routines allow to dump the memory allocated infos to a file 4767 or call a specific routine when a given block number is allocated:</p> 4768 <ul> 4769 <li><a 4770 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMallocLoc()</a> 4771 <a 4772 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlReallocLoc()</a> 4773 and <a 4774 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemStrdupLoc()</a> 4775 are the memory debugging replacement allocation routines</li> 4776 <li><a href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemoryDump 4777 ()</a> dumps all the information about the allocated memory block lefts 4778 in the <code>.memdump</code> file</li> 4779 </ul> 4780 4781 <p>When developing libxml2 memory debug is enabled, the tests programs call 4782 xmlMemoryDump () and the "make test" regression tests will check for any 4783 memory leak during the full regression test sequence, this helps a lot 4784 ensuring that libxml2 does not leak memory and bullet proof memory 4785 allocations use (some libc implementations are known to be far too permissive 4786 resulting in major portability problems!).</p> 4787 4788 <p>If the .memdump reports a leak, it displays the allocation function and 4789 also tries to give some information about the content and structure of the 4790 allocated blocks left. This is sufficient in most cases to find the culprit, 4791 but not always. Assuming the allocation problem is reproducible, it is 4792 possible to find more easily:</p> 4793 <ol> 4794 <li>write down the block number xxxx not allocated</li> 4795 <li>export the environment variable XML_MEM_BREAKPOINT=xxxx , the easiest 4796 when using GDB is to simply give the command 4797 <p><code>set environment XML_MEM_BREAKPOINT xxxx</code></p> 4798 <p>before running the program.</p> 4799 </li> 4800 <li>run the program under a debugger and set a breakpoint on 4801 xmlMallocBreakpoint() a specific function called when this precise block 4802 is allocated</li> 4803 <li>when the breakpoint is reached you can then do a fine analysis of the 4804 allocation an step to see the condition resulting in the missing 4805 deallocation.</li> 4806 </ol> 4807 4808 <p>I used to use a commercial tool to debug libxml2 memory problems but after 4809 noticing that it was not detecting memory leaks that simple mechanism was 4810 used and proved extremely efficient until now. Lately I have also used <a 4811 href="http://developer.kde.org/~sewardj/">valgrind</a> with quite some 4812 success, it is tied to the i386 architecture since it works by emulating the 4813 processor and instruction set, it is slow but extremely efficient, i.e. it 4814 spot memory usage errors in a very precise way.</p> 4815 4816 <h3><a name="General4">General memory requirements</a></h3> 4817 4818 <p>How much libxml2 memory require ? It's hard to tell in average it depends 4819 of a number of things:</p> 4820 <ul> 4821 <li>the parser itself should work in a fixed amount of memory, except for 4822 information maintained about the stacks of names and entities locations. 4823 The I/O and encoding handlers will probably account for a few KBytes. 4824 This is true for both the XML and HTML parser (though the HTML parser 4825 need more state).</li> 4826 <li>If you are generating the DOM tree then memory requirements will grow 4827 nearly linear with the size of the data. In general for a balanced 4828 textual document the internal memory requirement is about 4 times the 4829 size of the UTF8 serialization of this document (example the XML-1.0 4830 recommendation is a bit more of 150KBytes and takes 650KBytes of main 4831 memory when parsed). Validation will add a amount of memory required for 4832 maintaining the external Dtd state which should be linear with the 4833 complexity of the content model defined by the Dtd</li> 4834 <li>If you need to work with fixed memory requirements or don't need the 4835 full DOM tree then using the <a href="xmlreader.html">xmlReader 4836 interface</a> is probably the best way to proceed, it still allows to 4837 validate or operate on subset of the tree if needed.</li> 4838 <li>If you don't care about the advanced features of libxml2 like 4839 validation, DOM, XPath or XPointer, don't use entities, need to work with 4840 fixed memory requirements, and try to get the fastest parsing possible 4841 then the SAX interface should be used, but it has known restrictions.</li> 4842 </ul> 4843 4844 <p></p> 4845 <h3><a name="Compacting">Returning memory to the kernel</a></h3> 4846 4847 <p>You may encounter that your process using libxml2 does not have a 4848 reduced memory usage although you freed the trees. This is because 4849 libxml2 allocates memory in a number of small chunks. When freeing one 4850 of those chunks, the OS may decide that giving this little memory back 4851 to the kernel will cause too much overhead and delay the operation. As 4852 all chunks are this small, they get actually freed but not returned to 4853 the kernel. On systems using glibc, there is a function call 4854 "malloc_trim" from malloc.h which does this missing operation (note that 4855 it is allowed to fail). Thus, after freeing your tree you may simply try 4856 "malloc_trim(0);" to really get the memory back. If your OS does not 4857 provide malloc_trim, try searching for a similar function.</p> 4858 <p></p> 4859 4860 <h2><a name="Encodings">Encodings support</a></h2> 4861 4862 <p>If you are not really familiar with Internationalization (usual shortcut 4863 is I18N) , Unicode, characters and glyphs, I suggest you read a <a 4864 href="http://www.tbray.org/ongoing/When/200x/2003/04/06/Unicode">presentation</a> 4865 by Tim Bray on Unicode and why you should care about it.</p> 4866 4867 <p>If you don't understand why <b>it does not make sense to have a string 4868 without knowing what encoding it uses</b>, then as Joel Spolsky said <a 4869 href="http://www.joelonsoftware.com/articles/Unicode.html">please do not 4870 write another line of code until you finish reading that article.</a>. It is 4871 a prerequisite to understand this page, and avoid a lot of problems with 4872 libxml2, XML or text processing in general.</p> 4873 4874 <p>Table of Content:</p> 4875 <ol> 4876 <li><a href="encoding.html#What">What does internationalization support 4877 mean ?</a></li> 4878 <li><a href="encoding.html#internal">The internal encoding, how and 4879 why</a></li> 4880 <li><a href="encoding.html#implemente">How is it implemented ?</a></li> 4881 <li><a href="encoding.html#Default">Default supported encodings</a></li> 4882 <li><a href="encoding.html#extend">How to extend the existing 4883 support</a></li> 4884 </ol> 4885 4886 <h3><a name="What">What does internationalization support mean ?</a></h3> 4887 4888 <p>XML was designed from the start to allow the support of any character set 4889 by using Unicode. Any conformant XML parser has to support the UTF-8 and 4890 UTF-16 default encodings which can both express the full unicode ranges. UTF8 4891 is a variable length encoding whose greatest points are to reuse the same 4892 encoding for ASCII and to save space for Western encodings, but it is a bit 4893 more complex to handle in practice. UTF-16 use 2 bytes per character (and 4894 sometimes combines two pairs), it makes implementation easier, but looks a 4895 bit overkill for Western languages encoding. Moreover the XML specification 4896 allows the document to be encoded in other encodings at the condition that 4897 they are clearly labeled as such. For example the following is a wellformed 4898 XML document encoded in ISO-8859-1 and using accentuated letters that we 4899 French like for both markup and content:</p> 4900 <pre><?xml version="1.0" encoding="ISO-8859-1"?> 4901 <très>là </très></pre> 4902 4903 <p>Having internationalization support in libxml2 means the following:</p> 4904 <ul> 4905 <li>the document is properly parsed</li> 4906 <li>information about it's encoding is saved</li> 4907 <li>it can be modified</li> 4908 <li>it can be saved in its original encoding</li> 4909 <li>it can also be saved in another encoding supported by libxml2 (for 4910 example straight UTF8 or even an ASCII form)</li> 4911 </ul> 4912 4913 <p>Another very important point is that the whole libxml2 API, with the 4914 exception of a few routines to read with a specific encoding or save to a 4915 specific encoding, is completely agnostic about the original encoding of the 4916 document.</p> 4917 4918 <p>It should be noted too that the HTML parser embedded in libxml2 now obey 4919 the same rules too, the following document will be (as of 2.2.2) handled in 4920 an internationalized fashion by libxml2 too:</p> 4921 <pre><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" 4922 "http://www.w3.org/TR/REC-html40/loose.dtd"> 4923 <html lang="fr"> 4924 <head> 4925 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"> 4926 </head> 4927 <body> 4928 <p>W3C crée des standards pour le Web.</body> 4929 </html></pre> 4930 4931 <h3><a name="internal">The internal encoding, how and why</a></h3> 4932 4933 <p>One of the core decisions was to force all documents to be converted to a 4934 default internal encoding, and that encoding to be UTF-8, here are the 4935 rationales for those choices:</p> 4936 <ul> 4937 <li>keeping the native encoding in the internal form would force the libxml 4938 users (or the code associated) to be fully aware of the encoding of the 4939 original document, for examples when adding a text node to a document, 4940 the content would have to be provided in the document encoding, i.e. the 4941 client code would have to check it before hand, make sure it's conformant 4942 to the encoding, etc ... Very hard in practice, though in some specific 4943 cases this may make sense.</li> 4944 <li>the second decision was which encoding. From the XML spec only UTF8 and 4945 UTF16 really makes sense as being the two only encodings for which there 4946 is mandatory support. UCS-4 (32 bits fixed size encoding) could be 4947 considered an intelligent choice too since it's a direct Unicode mapping 4948 support. I selected UTF-8 on the basis of efficiency and compatibility 4949 with surrounding software: 4950 <ul> 4951 <li>UTF-8 while a bit more complex to convert from/to (i.e. slightly 4952 more costly to import and export CPU wise) is also far more compact 4953 than UTF-16 (and UCS-4) for a majority of the documents I see it used 4954 for right now (RPM RDF catalogs, advogato data, various configuration 4955 file formats, etc.) and the key point for today's computer 4956 architecture is efficient uses of caches. If one nearly double the 4957 memory requirement to store the same amount of data, this will trash 4958 caches (main memory/external caches/internal caches) and my take is 4959 that this harms the system far more than the CPU requirements needed 4960 for the conversion to UTF-8</li> 4961 <li>Most of libxml2 version 1 users were using it with straight ASCII 4962 most of the time, doing the conversion with an internal encoding 4963 requiring all their code to be rewritten was a serious show-stopper 4964 for using UTF-16 or UCS-4.</li> 4965 <li>UTF-8 is being used as the de-facto internal encoding standard for 4966 related code like the <a href="http://www.pango.org/">pango</a> 4967 upcoming Gnome text widget, and a lot of Unix code (yet another place 4968 where Unix programmer base takes a different approach from Microsoft 4969 - they are using UTF-16)</li> 4970 </ul> 4971 </li> 4972 </ul> 4973 4974 <p>What does this mean in practice for the libxml2 user:</p> 4975 <ul> 4976 <li>xmlChar, the libxml2 data type is a byte, those bytes must be assembled 4977 as UTF-8 valid strings. The proper way to terminate an xmlChar * string 4978 is simply to append 0 byte, as usual.</li> 4979 <li>One just need to make sure that when using chars outside the ASCII set, 4980 the values has been properly converted to UTF-8</li> 4981 </ul> 4982 4983 <h3><a name="implemente">How is it implemented ?</a></h3> 4984 4985 <p>Let's describe how all this works within libxml, basically the I18N 4986 (internationalization) support get triggered only during I/O operation, i.e. 4987 when reading a document or saving one. Let's look first at the reading 4988 sequence:</p> 4989 <ol> 4990 <li>when a document is processed, we usually don't know the encoding, a 4991 simple heuristic allows to detect UTF-16 and UCS-4 from encodings where 4992 the ASCII range (0-0x7F) maps with ASCII</li> 4993 <li>the xml declaration if available is parsed, including the encoding 4994 declaration. At that point, if the autodetected encoding is different 4995 from the one declared a call to xmlSwitchEncoding() is issued.</li> 4996 <li>If there is no encoding declaration, then the input has to be in either 4997 UTF-8 or UTF-16, if it is not then at some point when processing the 4998 input, the converter/checker of UTF-8 form will raise an encoding error. 4999 You may end-up with a garbled document, or no document at all ! Example: 5000 <pre>~/XML -> ./xmllint err.xml 5001 err.xml:1: error: Input is not proper UTF-8, indicate encoding ! 5002 <très>là</très> 5003 ^ 5004 err.xml:1: error: Bytes: 0xE8 0x73 0x3E 0x6C 5005 <très>là</très> 5006 ^</pre> 5007 </li> 5008 <li>xmlSwitchEncoding() does an encoding name lookup, canonicalize it, and 5009 then search the default registered encoding converters for that encoding. 5010 If it's not within the default set and iconv() support has been compiled 5011 it, it will ask iconv for such an encoder. If this fails then the parser 5012 will report an error and stops processing: 5013 <pre>~/XML -> ./xmllint err2.xml 5014 err2.xml:1: error: Unsupported encoding UnsupportedEnc 5015 <?xml version="1.0" encoding="UnsupportedEnc"?> 5016 ^</pre> 5017 </li> 5018 <li>From that point the encoder processes progressively the input (it is 5019 plugged as a front-end to the I/O module) for that entity. It captures 5020 and converts on-the-fly the document to be parsed to UTF-8. The parser 5021 itself just does UTF-8 checking of this input and process it 5022 transparently. The only difference is that the encoding information has 5023 been added to the parsing context (more precisely to the input 5024 corresponding to this entity).</li> 5025 <li>The result (when using DOM) is an internal form completely in UTF-8 5026 with just an encoding information on the document node.</li> 5027 </ol> 5028 5029 <p>Ok then what happens when saving the document (assuming you 5030 collected/built an xmlDoc DOM like structure) ? It depends on the function 5031 called, xmlSaveFile() will just try to save in the original encoding, while 5032 xmlSaveFileTo() and xmlSaveFileEnc() can optionally save to a given 5033 encoding:</p> 5034 <ol> 5035 <li>if no encoding is given, libxml2 will look for an encoding value 5036 associated to the document and if it exists will try to save to that 5037 encoding, 5038 <p>otherwise everything is written in the internal form, i.e. UTF-8</p> 5039 </li> 5040 <li>so if an encoding was specified, either at the API level or on the 5041 document, libxml2 will again canonicalize the encoding name, lookup for a 5042 converter in the registered set or through iconv. If not found the 5043 function will return an error code</li> 5044 <li>the converter is placed before the I/O buffer layer, as another kind of 5045 buffer, then libxml2 will simply push the UTF-8 serialization to through 5046 that buffer, which will then progressively be converted and pushed onto 5047 the I/O layer.</li> 5048 <li>It is possible that the converter code fails on some input, for example 5049 trying to push an UTF-8 encoded Chinese character through the UTF-8 to 5050 ISO-8859-1 converter won't work. Since the encoders are progressive they 5051 will just report the error and the number of bytes converted, at that 5052 point libxml2 will decode the offending character, remove it from the 5053 buffer and replace it with the associated charRef encoding &#123; and 5054 resume the conversion. This guarantees that any document will be saved 5055 without losses (except for markup names where this is not legal, this is 5056 a problem in the current version, in practice avoid using non-ascii 5057 characters for tag or attribute names). A special "ascii" encoding name 5058 is used to save documents to a pure ascii form can be used when 5059 portability is really crucial</li> 5060 </ol> 5061 5062 <p>Here are a few examples based on the same test document and assumin a 5063 terminal using ISO-8859-1 as the text encoding:</p> 5064 <pre>~/XML -> ./xmllint isolat1 5065 <?xml version="1.0" encoding="ISO-8859-1"?> 5066 <très>l</très> 5067 ~/XML -> ./xmllint --encode UTF-8 isolat1 5068 <?xml version="1.0" encoding="UTF-8"?> 5069 <trs>l </trs> 5070 ~/XML -> </pre> 5071 5072 <p>The same processing is applied (and reuse most of the code) for HTML I18N 5073 processing. Looking up and modifying the content encoding is a bit more 5074 difficult since it is located in a <meta> tag under the <head>, 5075 so a couple of functions htmlGetMetaEncoding() and htmlSetMetaEncoding() have 5076 been provided. The parser also attempts to switch encoding on the fly when 5077 detecting such a tag on input. Except for that the processing is the same 5078 (and again reuses the same code).</p> 5079 5080 <h3><a name="Default">Default supported encodings</a></h3> 5081 5082 <p>libxml2 has a set of default converters for the following encodings 5083 (located in encoding.c):</p> 5084 <ol> 5085 <li>UTF-8 is supported by default (null handlers)</li> 5086 <li>UTF-16, both little and big endian</li> 5087 <li>ISO-Latin-1 (ISO-8859-1) covering most western languages</li> 5088 <li>ASCII, useful mostly for saving</li> 5089 <li>HTML, a specific handler for the conversion of UTF-8 to ASCII with HTML 5090 predefined entities like &copy; for the Copyright sign.</li> 5091 </ol> 5092 5093 <p>More over when compiled on an Unix platform with iconv support the full 5094 set of encodings supported by iconv can be instantly be used by libxml. On a 5095 linux machine with glibc-2.1 the list of supported encodings and aliases fill 5096 3 full pages, and include UCS-4, the full set of ISO-Latin encodings, and the 5097 various Japanese ones.</p> 5098 5099 <p>To convert from the UTF-8 values returned from the API to another encoding 5100 then it is possible to use the function provided from <a 5101 href="html/libxml-encoding.html">the encoding module</a> like <a 5102 href="html/libxml-encoding.html#UTF8Toisolat1">UTF8Toisolat1</a>, or use the 5103 POSIX <a 5104 href="http://www.opengroup.org/onlinepubs/009695399/functions/iconv.html">iconv()</a> 5105 API directly.</p> 5106 5107 <h4>Encoding aliases</h4> 5108 5109 <p>From 2.2.3, libxml2 has support to register encoding names aliases. The 5110 goal is to be able to parse document whose encoding is supported but where 5111 the name differs (for example from the default set of names accepted by 5112 iconv). The following functions allow to register and handle new aliases for 5113 existing encodings. Once registered libxml2 will automatically lookup the 5114 aliases when handling a document:</p> 5115 <ul> 5116 <li>int xmlAddEncodingAlias(const char *name, const char *alias);</li> 5117 <li>int xmlDelEncodingAlias(const char *alias);</li> 5118 <li>const char * xmlGetEncodingAlias(const char *alias);</li> 5119 <li>void xmlCleanupEncodingAliases(void);</li> 5120 </ul> 5121 5122 <h3><a name="extend">How to extend the existing support</a></h3> 5123 5124 <p>Well adding support for new encoding, or overriding one of the encoders 5125 (assuming it is buggy) should not be hard, just write input and output 5126 conversion routines to/from UTF-8, and register them using 5127 xmlNewCharEncodingHandler(name, xxxToUTF8, UTF8Toxxx), and they will be 5128 called automatically if the parser(s) encounter such an encoding name 5129 (register it uppercase, this will help). The description of the encoders, 5130 their arguments and expected return values are described in the encoding.h 5131 header.</p> 5132 5133 <h2><a name="IO">I/O Interfaces</a></h2> 5134 5135 <p>Table of Content:</p> 5136 <ol> 5137 <li><a href="#General1">General overview</a></li> 5138 <li><a href="#basic">The basic buffer type</a></li> 5139 <li><a href="#Input">Input I/O handlers</a></li> 5140 <li><a href="#Output">Output I/O handlers</a></li> 5141 <li><a href="#entities">The entities loader</a></li> 5142 <li><a href="#Example2">Example of customized I/O</a></li> 5143 </ol> 5144 5145 <h3><a name="General1">General overview</a></h3> 5146 5147 <p>The module <code><a 5148 href="http://xmlsoft.org/html/libxml-xmlio.html">xmlIO.h</a></code> provides 5149 the interfaces to the libxml2 I/O system. This consists of 4 main parts:</p> 5150 <ul> 5151 <li>Entities loader, this is a routine which tries to fetch the entities 5152 (files) based on their PUBLIC and SYSTEM identifiers. The default loader 5153 don't look at the public identifier since libxml2 do not maintain a 5154 catalog. You can redefine you own entity loader by using 5155 <code>xmlGetExternalEntityLoader()</code> and 5156 <code>xmlSetExternalEntityLoader()</code>. <a href="#entities">Check the 5157 example</a>.</li> 5158 <li>Input I/O buffers which are a commodity structure used by the parser(s) 5159 input layer to handle fetching the information to feed the parser. This 5160 provides buffering and is also a placeholder where the encoding 5161 converters to UTF8 are piggy-backed.</li> 5162 <li>Output I/O buffers are similar to the Input ones and fulfill similar 5163 task but when generating a serialization from a tree.</li> 5164 <li>A mechanism to register sets of I/O callbacks and associate them with 5165 specific naming schemes like the protocol part of the URIs. 5166 <p>This affect the default I/O operations and allows to use specific I/O 5167 handlers for certain names.</p> 5168 </li> 5169 </ul> 5170 5171 <p>The general mechanism used when loading http://rpmfind.net/xml.html for 5172 example in the HTML parser is the following:</p> 5173 <ol> 5174 <li>The default entity loader calls <code>xmlNewInputFromFile()</code> with 5175 the parsing context and the URI string.</li> 5176 <li>the URI string is checked against the existing registered handlers 5177 using their match() callback function, if the HTTP module was compiled 5178 in, it is registered and its match() function will succeeds</li> 5179 <li>the open() function of the handler is called and if successful will 5180 return an I/O Input buffer</li> 5181 <li>the parser will the start reading from this buffer and progressively 5182 fetch information from the resource, calling the read() function of the 5183 handler until the resource is exhausted</li> 5184 <li>if an encoding change is detected it will be installed on the input 5185 buffer, providing buffering and efficient use of the conversion 5186 routines</li> 5187 <li>once the parser has finished, the close() function of the handler is 5188 called once and the Input buffer and associated resources are 5189 deallocated.</li> 5190 </ol> 5191 5192 <p>The user defined callbacks are checked first to allow overriding of the 5193 default libxml2 I/O routines.</p> 5194 5195 <h3><a name="basic">The basic buffer type</a></h3> 5196 5197 <p>All the buffer manipulation handling is done using the 5198 <code>xmlBuffer</code> type define in <code><a 5199 href="http://xmlsoft.org/html/libxml-tree.html">tree.h</a> </code>which is a 5200 resizable memory buffer. The buffer allocation strategy can be selected to be 5201 either best-fit or use an exponential doubling one (CPU vs. memory use 5202 trade-off). The values are <code>XML_BUFFER_ALLOC_EXACT</code> and 5203 <code>XML_BUFFER_ALLOC_DOUBLEIT</code>, and can be set individually or on a 5204 system wide basis using <code>xmlBufferSetAllocationScheme()</code>. A number 5205 of functions allows to manipulate buffers with names starting with the 5206 <code>xmlBuffer...</code> prefix.</p> 5207 5208 <h3><a name="Input">Input I/O handlers</a></h3> 5209 5210 <p>An Input I/O handler is a simple structure 5211 <code>xmlParserInputBuffer</code> containing a context associated to the 5212 resource (file descriptor, or pointer to a protocol handler), the read() and 5213 close() callbacks to use and an xmlBuffer. And extra xmlBuffer and a charset 5214 encoding handler are also present to support charset conversion when 5215 needed.</p> 5216 5217 <h3><a name="Output">Output I/O handlers</a></h3> 5218 5219 <p>An Output handler <code>xmlOutputBuffer</code> is completely similar to an 5220 Input one except the callbacks are write() and close().</p> 5221 5222 <h3><a name="entities">The entities loader</a></h3> 5223 5224 <p>The entity loader resolves requests for new entities and create inputs for 5225 the parser. Creating an input from a filename or an URI string is done 5226 through the xmlNewInputFromFile() routine. The default entity loader do not 5227 handle the PUBLIC identifier associated with an entity (if any). So it just 5228 calls xmlNewInputFromFile() with the SYSTEM identifier (which is mandatory in 5229 XML).</p> 5230 5231 <p>If you want to hook up a catalog mechanism then you simply need to 5232 override the default entity loader, here is an example:</p> 5233 <pre>#include <libxml/xmlIO.h> 5234 5235 xmlExternalEntityLoader defaultLoader = NULL; 5236 5237 xmlParserInputPtr 5238 xmlMyExternalEntityLoader(const char *URL, const char *ID, 5239 xmlParserCtxtPtr ctxt) { 5240 xmlParserInputPtr ret; 5241 const char *fileID = NULL; 5242 /* lookup for the fileID depending on ID */ 5243 5244 ret = xmlNewInputFromFile(ctxt, fileID); 5245 if (ret != NULL) 5246 return(ret); 5247 if (defaultLoader != NULL) 5248 ret = defaultLoader(URL, ID, ctxt); 5249 return(ret); 5250 } 5251 5252 int main(..) { 5253 ... 5254 5255 /* 5256 * Install our own entity loader 5257 */ 5258 defaultLoader = xmlGetExternalEntityLoader(); 5259 xmlSetExternalEntityLoader(xmlMyExternalEntityLoader); 5260 5261 ... 5262 }</pre> 5263 5264 <h3><a name="Example2">Example of customized I/O</a></h3> 5265 5266 <p>This example come from <a href="http://xmlsoft.org/messages/0708.html">a 5267 real use case</a>, xmlDocDump() closes the FILE * passed by the application 5268 and this was a problem. The <a 5269 href="http://xmlsoft.org/messages/0711.html">solution</a> was to redefine a 5270 new output handler with the closing call deactivated:</p> 5271 <ol> 5272 <li>First define a new I/O output allocator where the output don't close 5273 the file: 5274 <pre>xmlOutputBufferPtr 5275 xmlOutputBufferCreateOwn(FILE *file, xmlCharEncodingHandlerPtr encoder) { 5276 xmlOutputBufferPtr ret; 5277 5278 if (xmlOutputCallbackInitialized == 0) 5279 xmlRegisterDefaultOutputCallbacks(); 5280 5281 if (file == NULL) return(NULL); 5282 ret = xmlAllocOutputBuffer(encoder); 5283 if (ret != NULL) { 5284 ret->context = file; 5285 ret->writecallback = xmlFileWrite; 5286 ret->closecallback = NULL; /* No close callback */ 5287 } 5288 return(ret); 5289 } </pre> 5290 </li> 5291 <li>And then use it to save the document: 5292 <pre>FILE *f; 5293 xmlOutputBufferPtr output; 5294 xmlDocPtr doc; 5295 int res; 5296 5297 f = ... 5298 doc = .... 5299 5300 output = xmlOutputBufferCreateOwn(f, NULL); 5301 res = xmlSaveFileTo(output, doc, NULL); 5302 </pre> 5303 </li> 5304 </ol> 5305 5306 <h2><a name="Catalog">Catalog support</a></h2> 5307 5308 <p>Table of Content:</p> 5309 <ol> 5310 <li><a href="General2">General overview</a></li> 5311 <li><a href="#definition">The definition</a></li> 5312 <li><a href="#Simple">Using catalogs</a></li> 5313 <li><a href="#Some">Some examples</a></li> 5314 <li><a href="#reference">How to tune catalog usage</a></li> 5315 <li><a href="#validate">How to debug catalog processing</a></li> 5316 <li><a href="#Declaring">How to create and maintain catalogs</a></li> 5317 <li><a href="#implemento">The implementor corner quick review of the 5318 API</a></li> 5319 <li><a href="#Other">Other resources</a></li> 5320 </ol> 5321 5322 <h3><a name="General2">General overview</a></h3> 5323 5324 <p>What is a catalog? Basically it's a lookup mechanism used when an entity 5325 (a file or a remote resource) references another entity. The catalog lookup 5326 is inserted between the moment the reference is recognized by the software 5327 (XML parser, stylesheet processing, or even images referenced for inclusion 5328 in a rendering) and the time where loading that resource is actually 5329 started.</p> 5330 5331 <p>It is basically used for 3 things:</p> 5332 <ul> 5333 <li>mapping from "logical" names, the public identifiers and a more 5334 concrete name usable for download (and URI). For example it can associate 5335 the logical name 5336 <p>"-//OASIS//DTD DocBook XML V4.1.2//EN"</p> 5337 <p>of the DocBook 4.1.2 XML DTD with the actual URL where it can be 5338 downloaded</p> 5339 <p>http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd</p> 5340 </li> 5341 <li>remapping from a given URL to another one, like an HTTP indirection 5342 saying that 5343 <p>"http://www.oasis-open.org/committes/tr.xsl"</p> 5344 <p>should really be looked at</p> 5345 <p>"http://www.oasis-open.org/committes/entity/stylesheets/base/tr.xsl"</p> 5346 </li> 5347 <li>providing a local cache mechanism allowing to load the entities 5348 associated to public identifiers or remote resources, this is a really 5349 important feature for any significant deployment of XML or SGML since it 5350 allows to avoid the aleas and delays associated to fetching remote 5351 resources.</li> 5352 </ul> 5353 5354 <h3><a name="definition">The definitions</a></h3> 5355 5356 <p>Libxml, as of 2.4.3 implements 2 kind of catalogs:</p> 5357 <ul> 5358 <li>the older SGML catalogs, the official spec is SGML Open Technical 5359 Resolution TR9401:1997, but is better understood by reading <a 5360 href="http://www.jclark.com/sp/catalog.htm">the SP Catalog page</a> from 5361 James Clark. This is relatively old and not the preferred mode of 5362 operation of libxml.</li> 5363 <li><a href="http://www.oasis-open.org/committees/entity/spec.html">XML 5364 Catalogs</a> is far more flexible, more recent, uses an XML syntax and 5365 should scale quite better. This is the default option of libxml.</li> 5366 </ul> 5367 5368 <p></p> 5369 5370 <h3><a name="Simple">Using catalog</a></h3> 5371 5372 <p>In a normal environment libxml2 will by default check the presence of a 5373 catalog in /etc/xml/catalog, and assuming it has been correctly populated, 5374 the processing is completely transparent to the document user. To take a 5375 concrete example, suppose you are authoring a DocBook document, this one 5376 starts with the following DOCTYPE definition:</p> 5377 <pre><?xml version='1.0'?> 5378 <!DOCTYPE book PUBLIC "-//Norman Walsh//DTD DocBk XML V3.1.4//EN" 5379 "http://nwalsh.com/docbook/xml/3.1.4/db3xml.dtd"></pre> 5380 5381 <p>When validating the document with libxml, the catalog will be 5382 automatically consulted to lookup the public identifier "-//Norman Walsh//DTD 5383 DocBk XML V3.1.4//EN" and the system identifier 5384 "http://nwalsh.com/docbook/xml/3.1.4/db3xml.dtd", and if these entities have 5385 been installed on your system and the catalogs actually point to them, libxml 5386 will fetch them from the local disk.</p> 5387 5388 <p style="font-size: 10pt"><strong>Note</strong>: Really don't use this 5389 DOCTYPE example it's a really old version, but is fine as an example.</p> 5390 5391 <p>Libxml2 will check the catalog each time that it is requested to load an 5392 entity, this includes DTD, external parsed entities, stylesheets, etc ... If 5393 your system is correctly configured all the authoring phase and processing 5394 should use only local files, even if your document stays portable because it 5395 uses the canonical public and system ID, referencing the remote document.</p> 5396 5397 <h3><a name="Some">Some examples:</a></h3> 5398 5399 <p>Here is a couple of fragments from XML Catalogs used in libxml2 early 5400 regression tests in <code>test/catalogs</code> :</p> 5401 <pre><?xml version="1.0"?> 5402 <!DOCTYPE catalog PUBLIC 5403 "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" 5404 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5405 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"> 5406 <public publicId="-//OASIS//DTD DocBook XML V4.1.2//EN" 5407 uri="http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"/> 5408 ...</pre> 5409 5410 <p>This is the beginning of a catalog for DocBook 4.1.2, XML Catalogs are 5411 written in XML, there is a specific namespace for catalog elements 5412 "urn:oasis:names:tc:entity:xmlns:xml:catalog". The first entry in this 5413 catalog is a <code>public</code> mapping it allows to associate a Public 5414 Identifier with an URI.</p> 5415 <pre>... 5416 <rewriteSystem systemIdStartString="http://www.oasis-open.org/docbook/" 5417 rewritePrefix="file:///usr/share/xml/docbook/"/> 5418 ...</pre> 5419 5420 <p>A <code>rewriteSystem</code> is a very powerful instruction, it says that 5421 any URI starting with a given prefix should be looked at another URI 5422 constructed by replacing the prefix with an new one. In effect this acts like 5423 a cache system for a full area of the Web. In practice it is extremely useful 5424 with a file prefix if you have installed a copy of those resources on your 5425 local system.</p> 5426 <pre>... 5427 <delegatePublic publicIdStartString="-//OASIS//DTD XML Catalog //" 5428 catalog="file:///usr/share/xml/docbook.xml"/> 5429 <delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook XML" 5430 catalog="file:///usr/share/xml/docbook.xml"/> 5431 <delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML" 5432 catalog="file:///usr/share/xml/docbook.xml"/> 5433 <delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/" 5434 catalog="file:///usr/share/xml/docbook.xml"/> 5435 <delegateURI uriStartString="http://www.oasis-open.org/docbook/" 5436 catalog="file:///usr/share/xml/docbook.xml"/> 5437 ...</pre> 5438 5439 <p>Delegation is the core features which allows to build a tree of catalogs, 5440 easier to maintain than a single catalog, based on Public Identifier, System 5441 Identifier or URI prefixes it instructs the catalog software to look up 5442 entries in another resource. This feature allow to build hierarchies of 5443 catalogs, the set of entries presented should be sufficient to redirect the 5444 resolution of all DocBook references to the specific catalog in 5445 <code>/usr/share/xml/docbook.xml</code> this one in turn could delegate all 5446 references for DocBook 4.2.1 to a specific catalog installed at the same time 5447 as the DocBook resources on the local machine.</p> 5448 5449 <h3><a name="reference">How to tune catalog usage:</a></h3> 5450 5451 <p>The user can change the default catalog behaviour by redirecting queries 5452 to its own set of catalogs, this can be done by setting the 5453 <code>XML_CATALOG_FILES</code> environment variable to a list of catalogs, an 5454 empty one should deactivate loading the default <code>/etc/xml/catalog</code> 5455 default catalog</p> 5456 5457 <h3><a name="validate">How to debug catalog processing:</a></h3> 5458 5459 <p>Setting up the <code>XML_DEBUG_CATALOG</code> environment variable will 5460 make libxml2 output debugging information for each catalog operations, for 5461 example:</p> 5462 <pre>orchis:~/XML -> xmllint --memory --noout test/ent2 5463 warning: failed to load external entity "title.xml" 5464 orchis:~/XML -> export XML_DEBUG_CATALOG= 5465 orchis:~/XML -> xmllint --memory --noout test/ent2 5466 Failed to parse catalog /etc/xml/catalog 5467 Failed to parse catalog /etc/xml/catalog 5468 warning: failed to load external entity "title.xml" 5469 Catalogs cleanup 5470 orchis:~/XML -> </pre> 5471 5472 <p>The test/ent2 references an entity, running the parser from memory makes 5473 the base URI unavailable and the the "title.xml" entity cannot be loaded. 5474 Setting up the debug environment variable allows to detect that an attempt is 5475 made to load the <code>/etc/xml/catalog</code> but since it's not present the 5476 resolution fails.</p> 5477 5478 <p>But the most advanced way to debug XML catalog processing is to use the 5479 <strong>xmlcatalog</strong> command shipped with libxml2, it allows to load 5480 catalogs and make resolution queries to see what is going on. This is also 5481 used for the regression tests:</p> 5482 <pre>orchis:~/XML -> ./xmlcatalog test/catalogs/docbook.xml \ 5483 "-//OASIS//DTD DocBook XML V4.1.2//EN" 5484 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd 5485 orchis:~/XML -> </pre> 5486 5487 <p>For debugging what is going on, adding one -v flags increase the verbosity 5488 level to indicate the processing done (adding a second flag also indicate 5489 what elements are recognized at parsing):</p> 5490 <pre>orchis:~/XML -> ./xmlcatalog -v test/catalogs/docbook.xml \ 5491 "-//OASIS//DTD DocBook XML V4.1.2//EN" 5492 Parsing catalog test/catalogs/docbook.xml's content 5493 Found public match -//OASIS//DTD DocBook XML V4.1.2//EN 5494 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd 5495 Catalogs cleanup 5496 orchis:~/XML -> </pre> 5497 5498 <p>A shell interface is also available to debug and process multiple queries 5499 (and for regression tests):</p> 5500 <pre>orchis:~/XML -> ./xmlcatalog -shell test/catalogs/docbook.xml \ 5501 "-//OASIS//DTD DocBook XML V4.1.2//EN" 5502 > help 5503 Commands available: 5504 public PublicID: make a PUBLIC identifier lookup 5505 system SystemID: make a SYSTEM identifier lookup 5506 resolve PublicID SystemID: do a full resolver lookup 5507 add 'type' 'orig' 'replace' : add an entry 5508 del 'values' : remove values 5509 dump: print the current catalog state 5510 debug: increase the verbosity level 5511 quiet: decrease the verbosity level 5512 exit: quit the shell 5513 > public "-//OASIS//DTD DocBook XML V4.1.2//EN" 5514 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd 5515 > quit 5516 orchis:~/XML -> </pre> 5517 5518 <p>This should be sufficient for most debugging purpose, this was actually 5519 used heavily to debug the XML Catalog implementation itself.</p> 5520 5521 <h3><a name="Declaring">How to create and maintain</a> catalogs:</h3> 5522 5523 <p>Basically XML Catalogs are XML files, you can either use XML tools to 5524 manage them or use <strong>xmlcatalog</strong> for this. The basic step is 5525 to create a catalog the -create option provide this facility:</p> 5526 <pre>orchis:~/XML -> ./xmlcatalog --create tst.xml 5527 <?xml version="1.0"?> 5528 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" 5529 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5530 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"/> 5531 orchis:~/XML -> </pre> 5532 5533 <p>By default xmlcatalog does not overwrite the original catalog and save the 5534 result on the standard output, this can be overridden using the -noout 5535 option. The <code>-add</code> command allows to add entries in the 5536 catalog:</p> 5537 <pre>orchis:~/XML -> ./xmlcatalog --noout --create --add "public" \ 5538 "-//OASIS//DTD DocBook XML V4.1.2//EN" \ 5539 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd tst.xml 5540 orchis:~/XML -> cat tst.xml 5541 <?xml version="1.0"?> 5542 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" \ 5543 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5544 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"> 5545 <public publicId="-//OASIS//DTD DocBook XML V4.1.2//EN" 5546 uri="http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"/> 5547 </catalog> 5548 orchis:~/XML -> </pre> 5549 5550 <p>The <code>-add</code> option will always take 3 parameters even if some of 5551 the XML Catalog constructs (like nextCatalog) will have only a single 5552 argument, just pass a third empty string, it will be ignored.</p> 5553 5554 <p>Similarly the <code>-del</code> option remove matching entries from the 5555 catalog:</p> 5556 <pre>orchis:~/XML -> ./xmlcatalog --del \ 5557 "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" tst.xml 5558 <?xml version="1.0"?> 5559 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" 5560 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5561 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"/> 5562 orchis:~/XML -> </pre> 5563 5564 <p>The catalog is now empty. Note that the matching of <code>-del</code> is 5565 exact and would have worked in a similar fashion with the Public ID 5566 string.</p> 5567 5568 <p>This is rudimentary but should be sufficient to manage a not too complex 5569 catalog tree of resources.</p> 5570 5571 <h3><a name="implemento">The implementor corner quick review of the 5572 API:</a></h3> 5573 5574 <p>First, and like for every other module of libxml, there is an 5575 automatically generated <a href="html/libxml-catalog.html">API page for 5576 catalog support</a>.</p> 5577 5578 <p>The header for the catalog interfaces should be included as:</p> 5579 <pre>#include <libxml/catalog.h></pre> 5580 5581 <p>The API is voluntarily kept very simple. First it is not obvious that 5582 applications really need access to it since it is the default behaviour of 5583 libxml2 (Note: it is possible to completely override libxml2 default catalog 5584 by using <a href="html/libxml-parser.html">xmlSetExternalEntityLoader</a> to 5585 plug an application specific resolver).</p> 5586 5587 <p>Basically libxml2 support 2 catalog lists:</p> 5588 <ul> 5589 <li>the default one, global shared by all the application</li> 5590 <li>a per-document catalog, this one is built if the document uses the 5591 <code>oasis-xml-catalog</code> PIs to specify its own catalog list, it is 5592 associated to the parser context and destroyed when the parsing context 5593 is destroyed.</li> 5594 </ul> 5595 5596 <p>the document one will be used first if it exists.</p> 5597 5598 <h4>Initialization routines:</h4> 5599 5600 <p>xmlInitializeCatalog(), xmlLoadCatalog() and xmlLoadCatalogs() should be 5601 used at startup to initialize the catalog, if the catalog should be 5602 initialized with specific values xmlLoadCatalog() or xmlLoadCatalogs() 5603 should be called before xmlInitializeCatalog() which would otherwise do a 5604 default initialization first.</p> 5605 5606 <p>The xmlCatalogAddLocal() call is used by the parser to grow the document 5607 own catalog list if needed.</p> 5608 5609 <h4>Preferences setup:</h4> 5610 5611 <p>The XML Catalog spec requires the possibility to select default 5612 preferences between public and system delegation, 5613 xmlCatalogSetDefaultPrefer() allows this, xmlCatalogSetDefaults() and 5614 xmlCatalogGetDefaults() allow to control if XML Catalogs resolution should 5615 be forbidden, allowed for global catalog, for document catalog or both, the 5616 default is to allow both.</p> 5617 5618 <p>And of course xmlCatalogSetDebug() allows to generate debug messages 5619 (through the xmlGenericError() mechanism).</p> 5620 5621 <h4>Querying routines:</h4> 5622 5623 <p>xmlCatalogResolve(), xmlCatalogResolveSystem(), xmlCatalogResolvePublic() 5624 and xmlCatalogResolveURI() are relatively explicit if you read the XML 5625 Catalog specification they correspond to section 7 algorithms, they should 5626 also work if you have loaded an SGML catalog with a simplified semantic.</p> 5627 5628 <p>xmlCatalogLocalResolve() and xmlCatalogLocalResolveURI() are the same but 5629 operate on the document catalog list</p> 5630 5631 <h4>Cleanup and Miscellaneous:</h4> 5632 5633 <p>xmlCatalogCleanup() free-up the global catalog, xmlCatalogFreeLocal() is 5634 the per-document equivalent.</p> 5635 5636 <p>xmlCatalogAdd() and xmlCatalogRemove() are used to dynamically modify the 5637 first catalog in the global list, and xmlCatalogDump() allows to dump a 5638 catalog state, those routines are primarily designed for xmlcatalog, I'm not 5639 sure that exposing more complex interfaces (like navigation ones) would be 5640 really useful.</p> 5641 5642 <p>The xmlParseCatalogFile() is a function used to load XML Catalog files, 5643 it's similar as xmlParseFile() except it bypass all catalog lookups, it's 5644 provided because this functionality may be useful for client tools.</p> 5645 5646 <h4>threaded environments:</h4> 5647 5648 <p>Since the catalog tree is built progressively, some care has been taken to 5649 try to avoid troubles in multithreaded environments. The code is now thread 5650 safe assuming that the libxml2 library has been compiled with threads 5651 support.</p> 5652 5653 <p></p> 5654 5655 <h3><a name="Other">Other resources</a></h3> 5656 5657 <p>The XML Catalog specification is relatively recent so there isn't much 5658 literature to point at:</p> 5659 <ul> 5660 <li>You can find a good rant from Norm Walsh about <a 5661 href="http://www.arbortext.com/Think_Tank/XML_Resources/Issue_Three/issue_three.html">the 5662 need for catalogs</a>, it provides a lot of context information even if 5663 I don't agree with everything presented. Norm also wrote a more recent 5664 article <a 5665 href="http://wwws.sun.com/software/xml/developers/resolver/article/">XML 5666 entities and URI resolvers</a> describing them.</li> 5667 <li>An <a href="http://home.ccil.org/~cowan/XML/XCatalog.html">old XML 5668 catalog proposal</a> from John Cowan</li> 5669 <li>The <a href="http://www.rddl.org/">Resource Directory Description 5670 Language</a> (RDDL) another catalog system but more oriented toward 5671 providing metadata for XML namespaces.</li> 5672 <li>the page from the OASIS Technical <a 5673 href="http://www.oasis-open.org/committees/entity/">Committee on Entity 5674 Resolution</a> who maintains XML Catalog, you will find pointers to the 5675 specification update, some background and pointers to others tools 5676 providing XML Catalog support</li> 5677 <li>There is a <a href="buildDocBookCatalog">shell script</a> to generate 5678 XML Catalogs for DocBook 4.1.2 . If it can write to the /etc/xml/ 5679 directory, it will set-up /etc/xml/catalog and /etc/xml/docbook based on 5680 the resources found on the system. Otherwise it will just create 5681 ~/xmlcatalog and ~/dbkxmlcatalog and doing: 5682 <p><code>export XML_CATALOG_FILES=$HOME/xmlcatalog</code></p> 5683 <p>should allow to process DocBook documentations without requiring 5684 network accesses for the DTD or stylesheets</p> 5685 </li> 5686 <li>I have uploaded <a href="ftp://xmlsoft.org/libxml2/test/dbk412catalog.tar.gz">a 5687 small tarball</a> containing XML Catalogs for DocBook 4.1.2 which seems 5688 to work fine for me too</li> 5689 <li>The <a href="http://www.xmlsoft.org/xmlcatalog_man.html">xmlcatalog 5690 manual page</a></li> 5691 </ul> 5692 5693 <p>If you have suggestions for corrections or additions, simply contact 5694 me:</p> 5695 5696 <h2><a name="library">The parser interfaces</a></h2> 5697 5698 <p>This section is directly intended to help programmers getting bootstrapped 5699 using the XML tollkit from the C language. It is not intended to be 5700 extensive. I hope the automatically generated documents will provide the 5701 completeness required, but as a separate set of documents. The interfaces of 5702 the XML parser are by principle low level, Those interested in a higher level 5703 API should <a href="#DOM">look at DOM</a>.</p> 5704 5705 <p>The <a href="html/libxml-parser.html">parser interfaces for XML</a> are 5706 separated from the <a href="html/libxml-htmlparser.html">HTML parser 5707 interfaces</a>. Let's have a look at how the XML parser can be called:</p> 5708 5709 <h3><a name="Invoking">Invoking the parser : the pull method</a></h3> 5710 5711 <p>Usually, the first thing to do is to read an XML input. The parser accepts 5712 documents either from in-memory strings or from files. The functions are 5713 defined in "parser.h":</p> 5714 <dl> 5715 <dt><code>xmlDocPtr xmlParseMemory(char *buffer, int size);</code></dt> 5716 <dd><p>Parse a null-terminated string containing the document.</p> 5717 </dd> 5718 </dl> 5719 <dl> 5720 <dt><code>xmlDocPtr xmlParseFile(const char *filename);</code></dt> 5721 <dd><p>Parse an XML document contained in a (possibly compressed) 5722 file.</p> 5723 </dd> 5724 </dl> 5725 5726 <p>The parser returns a pointer to the document structure (or NULL in case of 5727 failure).</p> 5728 5729 <h3 id="Invoking1">Invoking the parser: the push method</h3> 5730 5731 <p>In order for the application to keep the control when the document is 5732 being fetched (which is common for GUI based programs) libxml2 provides a 5733 push interface, too, as of version 1.8.3. Here are the interface 5734 functions:</p> 5735 <pre>xmlParserCtxtPtr xmlCreatePushParserCtxt(xmlSAXHandlerPtr sax, 5736 void *user_data, 5737 const char *chunk, 5738 int size, 5739 const char *filename); 5740 int xmlParseChunk (xmlParserCtxtPtr ctxt, 5741 const char *chunk, 5742 int size, 5743 int terminate);</pre> 5744 5745 <p>and here is a simple example showing how to use the interface:</p> 5746 <pre> FILE *f; 5747 5748 f = fopen(filename, "r"); 5749 if (f != NULL) { 5750 int res, size = 1024; 5751 char chars[1024]; 5752 xmlParserCtxtPtr ctxt; 5753 5754 res = fread(chars, 1, 4, f); 5755 if (res > 0) { 5756 ctxt = xmlCreatePushParserCtxt(NULL, NULL, 5757 chars, res, filename); 5758 while ((res = fread(chars, 1, size, f)) > 0) { 5759 xmlParseChunk(ctxt, chars, res, 0); 5760 } 5761 xmlParseChunk(ctxt, chars, 0, 1); 5762 doc = ctxt->myDoc; 5763 xmlFreeParserCtxt(ctxt); 5764 } 5765 }</pre> 5766 5767 <p>The HTML parser embedded into libxml2 also has a push interface; the 5768 functions are just prefixed by "html" rather than "xml".</p> 5769 5770 <h3 id="Invoking2">Invoking the parser: the SAX interface</h3> 5771 5772 <p>The tree-building interface makes the parser memory-hungry, first loading 5773 the document in memory and then building the tree itself. Reading a document 5774 without building the tree is possible using the SAX interfaces (see SAX.h and 5775 <a href="http://www.daa.com.au/~james/gnome/xml-sax/xml-sax.html">James 5776 Henstridge's documentation</a>). Note also that the push interface can be 5777 limited to SAX: just use the two first arguments of 5778 <code>xmlCreatePushParserCtxt()</code>.</p> 5779 5780 <h3><a name="Building">Building a tree from scratch</a></h3> 5781 5782 <p>The other way to get an XML tree in memory is by building it. Basically 5783 there is a set of functions dedicated to building new elements. (These are 5784 also described in <libxml/tree.h>.) For example, here is a piece of 5785 code that produces the XML document used in the previous examples:</p> 5786 <pre> #include <libxml/tree.h> 5787 xmlDocPtr doc; 5788 xmlNodePtr tree, subtree; 5789 5790 doc = xmlNewDoc("1.0"); 5791 doc->children = xmlNewDocNode(doc, NULL, "EXAMPLE", NULL); 5792 xmlSetProp(doc->children, "prop1", "gnome is great"); 5793 xmlSetProp(doc->children, "prop2", "& linux too"); 5794 tree = xmlNewChild(doc->children, NULL, "head", NULL); 5795 subtree = xmlNewChild(tree, NULL, "title", "Welcome to Gnome"); 5796 tree = xmlNewChild(doc->children, NULL, "chapter", NULL); 5797 subtree = xmlNewChild(tree, NULL, "title", "The Linux adventure"); 5798 subtree = xmlNewChild(tree, NULL, "p", "bla bla bla ..."); 5799 subtree = xmlNewChild(tree, NULL, "image", NULL); 5800 xmlSetProp(subtree, "href", "linus.gif");</pre> 5801 5802 <p>Not really rocket science ...</p> 5803 5804 <h3><a name="Traversing">Traversing the tree</a></h3> 5805 5806 <p>Basically by <a href="html/libxml-tree.html">including "tree.h"</a> your 5807 code has access to the internal structure of all the elements of the tree. 5808 The names should be somewhat simple like <strong>parent</strong>, 5809 <strong>children</strong>, <strong>next</strong>, <strong>prev</strong>, 5810 <strong>properties</strong>, etc... For example, still with the previous 5811 example:</p> 5812 <pre><code>doc->children->children->children</code></pre> 5813 5814 <p>points to the title element,</p> 5815 <pre>doc->children->children->next->children->children</pre> 5816 5817 <p>points to the text node containing the chapter title "The Linux 5818 adventure".</p> 5819 5820 <p><strong>NOTE</strong>: XML allows <em>PI</em>s and <em>comments</em> to be 5821 present before the document root, so <code>doc->children</code> may point 5822 to an element which is not the document Root Element; a function 5823 <code>xmlDocGetRootElement()</code> was added for this purpose.</p> 5824 5825 <h3><a name="Modifying">Modifying the tree</a></h3> 5826 5827 <p>Functions are provided for reading and writing the document content. Here 5828 is an excerpt from the <a href="html/libxml-tree.html">tree API</a>:</p> 5829 <dl> 5830 <dt><code>xmlAttrPtr xmlSetProp(xmlNodePtr node, const xmlChar *name, const 5831 xmlChar *value);</code></dt> 5832 <dd><p>This sets (or changes) an attribute carried by an ELEMENT node. 5833 The value can be NULL.</p> 5834 </dd> 5835 </dl> 5836 <dl> 5837 <dt><code>const xmlChar *xmlGetProp(xmlNodePtr node, const xmlChar 5838 *name);</code></dt> 5839 <dd><p>This function returns a pointer to new copy of the property 5840 content. Note that the user must deallocate the result.</p> 5841 </dd> 5842 </dl> 5843 5844 <p>Two functions are provided for reading and writing the text associated 5845 with elements:</p> 5846 <dl> 5847 <dt><code>xmlNodePtr xmlStringGetNodeList(xmlDocPtr doc, const xmlChar 5848 *value);</code></dt> 5849 <dd><p>This function takes an "external" string and converts it to one 5850 text node or possibly to a list of entity and text nodes. All 5851 non-predefined entity references like &Gnome; will be stored 5852 internally as entity nodes, hence the result of the function may not be 5853 a single node.</p> 5854 </dd> 5855 </dl> 5856 <dl> 5857 <dt><code>xmlChar *xmlNodeListGetString(xmlDocPtr doc, xmlNodePtr list, int 5858 inLine);</code></dt> 5859 <dd><p>This function is the inverse of 5860 <code>xmlStringGetNodeList()</code>. It generates a new string 5861 containing the content of the text and entity nodes. Note the extra 5862 argument inLine. If this argument is set to 1, the function will expand 5863 entity references. For example, instead of returning the &Gnome; 5864 XML encoding in the string, it will substitute it with its value (say, 5865 "GNU Network Object Model Environment").</p> 5866 </dd> 5867 </dl> 5868 5869 <h3><a name="Saving">Saving a tree</a></h3> 5870 5871 <p>Basically 3 options are possible:</p> 5872 <dl> 5873 <dt><code>void xmlDocDumpMemory(xmlDocPtr cur, xmlChar**mem, int 5874 *size);</code></dt> 5875 <dd><p>Returns a buffer into which the document has been saved.</p> 5876 </dd> 5877 </dl> 5878 <dl> 5879 <dt><code>extern void xmlDocDump(FILE *f, xmlDocPtr doc);</code></dt> 5880 <dd><p>Dumps a document to an open file descriptor.</p> 5881 </dd> 5882 </dl> 5883 <dl> 5884 <dt><code>int xmlSaveFile(const char *filename, xmlDocPtr cur);</code></dt> 5885 <dd><p>Saves the document to a file. In this case, the compression 5886 interface is triggered if it has been turned on.</p> 5887 </dd> 5888 </dl> 5889 5890 <h3><a name="Compressio">Compression</a></h3> 5891 5892 <p>The library transparently handles compression when doing file-based 5893 accesses. The level of compression on saves can be turned on either globally 5894 or individually for one file:</p> 5895 <dl> 5896 <dt><code>int xmlGetDocCompressMode (xmlDocPtr doc);</code></dt> 5897 <dd><p>Gets the document compression ratio (0-9).</p> 5898 </dd> 5899 </dl> 5900 <dl> 5901 <dt><code>void xmlSetDocCompressMode (xmlDocPtr doc, int mode);</code></dt> 5902 <dd><p>Sets the document compression ratio.</p> 5903 </dd> 5904 </dl> 5905 <dl> 5906 <dt><code>int xmlGetCompressMode(void);</code></dt> 5907 <dd><p>Gets the default compression ratio.</p> 5908 </dd> 5909 </dl> 5910 <dl> 5911 <dt><code>void xmlSetCompressMode(int mode);</code></dt> 5912 <dd><p>Sets the default compression ratio.</p> 5913 </dd> 5914 </dl> 5915 5916 <h2><a name="Entities">Entities or no entities</a></h2> 5917 5918 <p>Entities in principle are similar to simple C macros. An entity defines an 5919 abbreviation for a given string that you can reuse many times throughout the 5920 content of your document. Entities are especially useful when a given string 5921 may occur frequently within a document, or to confine the change needed to a 5922 document to a restricted area in the internal subset of the document (at the 5923 beginning). Example:</p> 5924 <pre>1 <?xml version="1.0"?> 5925 2 <!DOCTYPE EXAMPLE SYSTEM "example.dtd" [ 5926 3 <!ENTITY xml "Extensible Markup Language"> 5927 4 ]> 5928 5 <EXAMPLE> 5929 6 &xml; 5930 7 </EXAMPLE></pre> 5931 5932 <p>Line 3 declares the xml entity. Line 6 uses the xml entity, by prefixing 5933 its name with '&' and following it by ';' without any spaces added. There 5934 are 5 predefined entities in libxml2 allowing you to escape characters with 5935 predefined meaning in some parts of the xml document content: 5936 <strong>&lt;</strong> for the character '<', <strong>&gt;</strong> 5937 for the character '>', <strong>&apos;</strong> for the character ''', 5938 <strong>&quot;</strong> for the character '"', and 5939 <strong>&amp;</strong> for the character '&'.</p> 5940 5941 <p>One of the problems related to entities is that you may want the parser to 5942 substitute an entity's content so that you can see the replacement text in 5943 your application. Or you may prefer to keep entity references as such in the 5944 content to be able to save the document back without losing this usually 5945 precious information (if the user went through the pain of explicitly 5946 defining entities, he may have a a rather negative attitude if you blindly 5947 substitute them as saving time). The <a 5948 href="html/libxml-parser.html#xmlSubstituteEntitiesDefault">xmlSubstituteEntitiesDefault()</a> 5949 function allows you to check and change the behaviour, which is to not 5950 substitute entities by default.</p> 5951 5952 <p>Here is the DOM tree built by libxml2 for the previous document in the 5953 default case:</p> 5954 <pre>/gnome/src/gnome-xml -> ./xmllint --debug test/ent1 5955 DOCUMENT 5956 version=1.0 5957 ELEMENT EXAMPLE 5958 TEXT 5959 content= 5960 ENTITY_REF 5961 INTERNAL_GENERAL_ENTITY xml 5962 content=Extensible Markup Language 5963 TEXT 5964 content=</pre> 5965 5966 <p>And here is the result when substituting entities:</p> 5967 <pre>/gnome/src/gnome-xml -> ./tester --debug --noent test/ent1 5968 DOCUMENT 5969 version=1.0 5970 ELEMENT EXAMPLE 5971 TEXT 5972 content= Extensible Markup Language</pre> 5973 5974 <p>So, entities or no entities? Basically, it depends on your use case. I 5975 suggest that you keep the non-substituting default behaviour and avoid using 5976 entities in your XML document or data if you are not willing to handle the 5977 entity references elements in the DOM tree.</p> 5978 5979 <p>Note that at save time libxml2 enforces the conversion of the predefined 5980 entities where necessary to prevent well-formedness problems, and will also 5981 transparently replace those with chars (i.e. it will not generate entity 5982 reference elements in the DOM tree or call the reference() SAX callback when 5983 finding them in the input).</p> 5984 5985 <p><span style="background-color: #FF0000">WARNING</span>: handling entities 5986 on top of the libxml2 SAX interface is difficult!!! If you plan to use 5987 non-predefined entities in your documents, then the learning curve to handle 5988 then using the SAX API may be long. If you plan to use complex documents, I 5989 strongly suggest you consider using the DOM interface instead and let libxml 5990 deal with the complexity rather than trying to do it yourself.</p> 5991 5992 <h2><a name="Namespaces">Namespaces</a></h2> 5993 5994 <p>The libxml2 library implements <a 5995 href="http://www.w3.org/TR/REC-xml-names/">XML namespaces</a> support by 5996 recognizing namespace constructs in the input, and does namespace lookup 5997 automatically when building the DOM tree. A namespace declaration is 5998 associated with an in-memory structure and all elements or attributes within 5999 that namespace point to it. Hence testing the namespace is a simple and fast 6000 equality operation at the user level.</p> 6001 6002 <p>I suggest that people using libxml2 use a namespace, and declare it in the 6003 root element of their document as the default namespace. Then they don't need 6004 to use the prefix in the content but we will have a basis for future semantic 6005 refinement and merging of data from different sources. This doesn't increase 6006 the size of the XML output significantly, but significantly increases its 6007 value in the long-term. Example:</p> 6008 <pre><mydoc xmlns="http://mydoc.example.org/schemas/"> 6009 <elem1>...</elem1> 6010 <elem2>...</elem2> 6011 </mydoc></pre> 6012 6013 <p>The namespace value has to be an absolute URL, but the URL doesn't have to 6014 point to any existing resource on the Web. It will bind all the element and 6015 attributes with that URL. I suggest to use an URL within a domain you 6016 control, and that the URL should contain some kind of version information if 6017 possible. For example, <code>"http://www.gnome.org/gnumeric/1.0/"</code> is a 6018 good namespace scheme.</p> 6019 6020 <p>Then when you load a file, make sure that a namespace carrying the 6021 version-independent prefix is installed on the root element of your document, 6022 and if the version information don't match something you know, warn the user 6023 and be liberal in what you accept as the input. Also do *not* try to base 6024 namespace checking on the prefix value. <foo:text> may be exactly the 6025 same as <bar:text> in another document. What really matters is the URI 6026 associated with the element or the attribute, not the prefix string (which is 6027 just a shortcut for the full URI). In libxml, element and attributes have an 6028 <code>ns</code> field pointing to an xmlNs structure detailing the namespace 6029 prefix and its URI.</p> 6030 6031 <p>@@Interfaces@@</p> 6032 <pre>xmlNodePtr node; 6033 if(!strncmp(node->name,"mytag",5) 6034 && node->ns 6035 && !strcmp(node->ns->href,"http://www.mysite.com/myns/1.0")) { 6036 ... 6037 }</pre> 6038 6039 <p>Usually people object to using namespaces together with validity checking. 6040 I will try to make sure that using namespaces won't break validity checking, 6041 so even if you plan to use or currently are using validation I strongly 6042 suggest adding namespaces to your document. A default namespace scheme 6043 <code>xmlns="http://...."</code> should not break validity even on less 6044 flexible parsers. Using namespaces to mix and differentiate content coming 6045 from multiple DTDs will certainly break current validation schemes. To check 6046 such documents one needs to use schema-validation, which is supported in 6047 libxml2 as well. See <a href="http://www.relaxng.org/">relagx-ng</a> and <a 6048 href="http://www.w3c.org/XML/Schema">w3c-schema</a>.</p> 6049 6050 <h2><a name="Upgrading">Upgrading 1.x code</a></h2> 6051 6052 <p>Incompatible changes:</p> 6053 6054 <p>Version 2 of libxml2 is the first version introducing serious backward 6055 incompatible changes. The main goals were:</p> 6056 <ul> 6057 <li>a general cleanup. A number of mistakes inherited from the very early 6058 versions couldn't be changed due to compatibility constraints. Example 6059 the "childs" element in the nodes.</li> 6060 <li>Uniformization of the various nodes, at least for their header and link 6061 parts (doc, parent, children, prev, next), the goal is a simpler 6062 programming model and simplifying the task of the DOM implementors.</li> 6063 <li>better conformances to the XML specification, for example version 1.x 6064 had an heuristic to try to detect ignorable white spaces. As a result the 6065 SAX event generated were ignorableWhitespace() while the spec requires 6066 character() in that case. This also mean that a number of DOM node 6067 containing blank text may populate the DOM tree which were not present 6068 before.</li> 6069 </ul> 6070 6071 <h3>How to fix libxml-1.x code:</h3> 6072 6073 <p>So client code of libxml designed to run with version 1.x may have to be 6074 changed to compile against version 2.x of libxml. Here is a list of changes 6075 that I have collected, they may not be sufficient, so in case you find other 6076 change which are required, <a href="mailto:Daniel.Veillard (a] w3.org">drop me a 6077 mail</a>:</p> 6078 <ol> 6079 <li>The package name have changed from libxml to libxml2, the library name 6080 is now -lxml2 . There is a new xml2-config script which should be used to 6081 select the right parameters libxml2</li> 6082 <li>Node <strong>childs</strong> field has been renamed 6083 <strong>children</strong> so s/childs/children/g should be applied 6084 (probability of having "childs" anywhere else is close to 0+</li> 6085 <li>The document don't have anymore a <strong>root</strong> element it has 6086 been replaced by <strong>children</strong> and usually you will get a 6087 list of element here. For example a Dtd element for the internal subset 6088 and it's declaration may be found in that list, as well as processing 6089 instructions or comments found before or after the document root element. 6090 Use <strong>xmlDocGetRootElement(doc)</strong> to get the root element of 6091 a document. Alternatively if you are sure to not reference DTDs nor have 6092 PIs or comments before or after the root element 6093 s/->root/->children/g will probably do it.</li> 6094 <li>The white space issue, this one is more complex, unless special case of 6095 validating parsing, the line breaks and spaces usually used for indenting 6096 and formatting the document content becomes significant. So they are 6097 reported by SAX and if your using the DOM tree, corresponding nodes are 6098 generated. Too approach can be taken: 6099 <ol> 6100 <li>lazy one, use the compatibility call 6101 <strong>xmlKeepBlanksDefault(0)</strong> but be aware that you are 6102 relying on a special (and possibly broken) set of heuristics of 6103 libxml to detect ignorable blanks. Don't complain if it breaks or 6104 make your application not 100% clean w.r.t. to it's input.</li> 6105 <li>the Right Way: change you code to accept possibly insignificant 6106 blanks characters, or have your tree populated with weird blank text 6107 nodes. You can spot them using the commodity function 6108 <strong>xmlIsBlankNode(node)</strong> returning 1 for such blank 6109 nodes.</li> 6110 </ol> 6111 <p>Note also that with the new default the output functions don't add any 6112 extra indentation when saving a tree in order to be able to round trip 6113 (read and save) without inflating the document with extra formatting 6114 chars.</p> 6115 </li> 6116 <li>The include path has changed to $prefix/libxml/ and the includes 6117 themselves uses this new prefix in includes instructions... If you are 6118 using (as expected) the 6119 <pre>xml2-config --cflags</pre> 6120 <p>output to generate you compile commands this will probably work out of 6121 the box</p> 6122 </li> 6123 <li>xmlDetectCharEncoding takes an extra argument indicating the length in 6124 byte of the head of the document available for character detection.</li> 6125 </ol> 6126 6127 <h3>Ensuring both libxml-1.x and libxml-2.x compatibility</h3> 6128 6129 <p>Two new version of libxml (1.8.11) and libxml2 (2.3.4) have been released 6130 to allow smooth upgrade of existing libxml v1code while retaining 6131 compatibility. They offers the following:</p> 6132 <ol> 6133 <li>similar include naming, one should use 6134 <strong>#include<libxml/...></strong> in both cases.</li> 6135 <li>similar identifiers defined via macros for the child and root fields: 6136 respectively <strong>xmlChildrenNode</strong> and 6137 <strong>xmlRootNode</strong></li> 6138 <li>a new macro <strong>LIBXML_TEST_VERSION</strong> which should be 6139 inserted once in the client code</li> 6140 </ol> 6141 6142 <p>So the roadmap to upgrade your existing libxml applications is the 6143 following:</p> 6144 <ol> 6145 <li>install the libxml-1.8.8 (and libxml-devel-1.8.8) packages</li> 6146 <li>find all occurrences where the xmlDoc <strong>root</strong> field is 6147 used and change it to <strong>xmlRootNode</strong></li> 6148 <li>similarly find all occurrences where the xmlNode 6149 <strong>childs</strong> field is used and change it to 6150 <strong>xmlChildrenNode</strong></li> 6151 <li>add a <strong>LIBXML_TEST_VERSION</strong> macro somewhere in your 6152 <strong>main()</strong> or in the library init entry point</li> 6153 <li>Recompile, check compatibility, it should still work</li> 6154 <li>Change your configure script to look first for xml2-config and fall 6155 back using xml-config . Use the --cflags and --libs output of the command 6156 as the Include and Linking parameters needed to use libxml.</li> 6157 <li>install libxml2-2.3.x and libxml2-devel-2.3.x (libxml-1.8.y and 6158 libxml-devel-1.8.y can be kept simultaneously)</li> 6159 <li>remove your config.cache, relaunch your configuration mechanism, and 6160 recompile, if steps 2 and 3 were done right it should compile as-is</li> 6161 <li>Test that your application is still running correctly, if not this may 6162 be due to extra empty nodes due to formating spaces being kept in libxml2 6163 contrary to libxml1, in that case insert xmlKeepBlanksDefault(1) in your 6164 code before calling the parser (next to 6165 <strong>LIBXML_TEST_VERSION</strong> is a fine place).</li> 6166 </ol> 6167 6168 <p>Following those steps should work. It worked for some of my own code.</p> 6169 6170 <p>Let me put some emphasis on the fact that there is far more changes from 6171 libxml 1.x to 2.x than the ones you may have to patch for. The overall code 6172 has been considerably cleaned up and the conformance to the XML specification 6173 has been drastically improved too. Don't take those changes as an excuse to 6174 not upgrade, it may cost a lot on the long term ...</p> 6175 6176 <h2><a name="Thread">Thread safety</a></h2> 6177 6178 <p>Starting with 2.4.7, libxml2 makes provisions to ensure that concurrent 6179 threads can safely work in parallel parsing different documents. There is 6180 however a couple of things to do to ensure it:</p> 6181 <ul> 6182 <li>configure the library accordingly using the --with-threads options</li> 6183 <li>call xmlInitParser() in the "main" thread before using any of the 6184 libxml2 API (except possibly selecting a different memory allocator)</li> 6185 </ul> 6186 6187 <p>Note that the thread safety cannot be ensured for multiple threads sharing 6188 the same document, the locking must be done at the application level, libxml 6189 exports a basic mutex and reentrant mutexes API in <libxml/threads.h>. 6190 The parts of the library checked for thread safety are:</p> 6191 <ul> 6192 <li>concurrent loading</li> 6193 <li>file access resolution</li> 6194 <li>catalog access</li> 6195 <li>catalog building</li> 6196 <li>entities lookup/accesses</li> 6197 <li>validation</li> 6198 <li>global variables per-thread override</li> 6199 <li>memory handling</li> 6200 </ul> 6201 6202 <p>XPath has been tested for threaded usage on non-modified document 6203 for example when using libxslt, but make 100% sure the documents 6204 are accessed read-only !</p> 6205 6206 <h2><a name="DOM"></a><a name="Principles">DOM Principles</a></h2> 6207 6208 <p><a href="http://www.w3.org/DOM/">DOM</a> stands for the <em>Document 6209 Object Model</em>; this is an API for accessing XML or HTML structured 6210 documents. Native support for DOM in Gnome is on the way (module gnome-dom), 6211 and will be based on gnome-xml. This will be a far cleaner interface to 6212 manipulate XML files within Gnome since it won't expose the internal 6213 structure.</p> 6214 6215 <p>The current DOM implementation on top of libxml2 is the <a 6216 href="http://svn.gnome.org/viewvc/gdome2/trunk/">gdome2 Gnome module</a>, this 6217 is a full DOM interface, thanks to Paolo Casarini, check the <a 6218 href="http://gdome2.cs.unibo.it/">Gdome2 homepage</a> for more 6219 information.</p> 6220 6221 <h2><a name="Example"></a><a name="real">A real example</a></h2> 6222 6223 <p>Here is a real size example, where the actual content of the application 6224 data is not kept in the DOM tree but uses internal structures. It is based on 6225 a proposal to keep a database of jobs related to Gnome, with an XML based 6226 storage structure. Here is an <a href="gjobs.xml">XML encoded jobs 6227 base</a>:</p> 6228 <pre><?xml version="1.0"?> 6229 <gjob:Helping xmlns:gjob="http://www.gnome.org/some-location"> 6230 <gjob:Jobs> 6231 6232 <gjob:Job> 6233 <gjob:Project ID="3"/> 6234 <gjob:Application>GBackup</gjob:Application> 6235 <gjob:Category>Development</gjob:Category> 6236 6237 <gjob:Update> 6238 <gjob:Status>Open</gjob:Status> 6239 <gjob:Modified>Mon, 07 Jun 1999 20:27:45 -0400 MET DST</gjob:Modified> 6240 <gjob:Salary>USD 0.00</gjob:Salary> 6241 </gjob:Update> 6242 6243 <gjob:Developers> 6244 <gjob:Developer> 6245 </gjob:Developer> 6246 </gjob:Developers> 6247 6248 <gjob:Contact> 6249 <gjob:Person>Nathan Clemons</gjob:Person> 6250 <gjob:Email>nathan (a] windsofstorm.net</gjob:Email> 6251 <gjob:Company> 6252 </gjob:Company> 6253 <gjob:Organisation> 6254 </gjob:Organisation> 6255 <gjob:Webpage> 6256 </gjob:Webpage> 6257 <gjob:Snailmail> 6258 </gjob:Snailmail> 6259 <gjob:Phone> 6260 </gjob:Phone> 6261 </gjob:Contact> 6262 6263 <gjob:Requirements> 6264 The program should be released as free software, under the GPL. 6265 </gjob:Requirements> 6266 6267 <gjob:Skills> 6268 </gjob:Skills> 6269 6270 <gjob:Details> 6271 A GNOME based system that will allow a superuser to configure 6272 compressed and uncompressed files and/or file systems to be backed 6273 up with a supported media in the system. This should be able to 6274 perform via find commands generating a list of files that are passed 6275 to tar, dd, cpio, cp, gzip, etc., to be directed to the tape machine 6276 or via operations performed on the filesystem itself. Email 6277 notification and GUI status display very important. 6278 </gjob:Details> 6279 6280 </gjob:Job> 6281 6282 </gjob:Jobs> 6283 </gjob:Helping></pre> 6284 6285 <p>While loading the XML file into an internal DOM tree is a matter of 6286 calling only a couple of functions, browsing the tree to gather the data and 6287 generate the internal structures is harder, and more error prone.</p> 6288 6289 <p>The suggested principle is to be tolerant with respect to the input 6290 structure. For example, the ordering of the attributes is not significant, 6291 the XML specification is clear about it. It's also usually a good idea not to 6292 depend on the order of the children of a given node, unless it really makes 6293 things harder. Here is some code to parse the information for a person:</p> 6294 <pre>/* 6295 * A person record 6296 */ 6297 typedef struct person { 6298 char *name; 6299 char *email; 6300 char *company; 6301 char *organisation; 6302 char *smail; 6303 char *webPage; 6304 char *phone; 6305 } person, *personPtr; 6306 6307 /* 6308 * And the code needed to parse it 6309 */ 6310 personPtr parsePerson(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur) { 6311 personPtr ret = NULL; 6312 6313 DEBUG("parsePerson\n"); 6314 /* 6315 * allocate the struct 6316 */ 6317 ret = (personPtr) malloc(sizeof(person)); 6318 if (ret == NULL) { 6319 fprintf(stderr,"out of memory\n"); 6320 return(NULL); 6321 } 6322 memset(ret, 0, sizeof(person)); 6323 6324 /* We don't care what the top level element name is */ 6325 cur = cur->xmlChildrenNode; 6326 while (cur != NULL) { 6327 if ((!strcmp(cur->name, "Person")) && (cur->ns == ns)) 6328 ret->name = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6329 if ((!strcmp(cur->name, "Email")) && (cur->ns == ns)) 6330 ret->email = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6331 cur = cur->next; 6332 } 6333 6334 return(ret); 6335 }</pre> 6336 6337 <p>Here are a couple of things to notice:</p> 6338 <ul> 6339 <li>Usually a recursive parsing style is the more convenient one: XML data 6340 is by nature subject to repetitive constructs and usually exhibits highly 6341 structured patterns.</li> 6342 <li>The two arguments of type <em>xmlDocPtr</em> and <em>xmlNsPtr</em>, 6343 i.e. the pointer to the global XML document and the namespace reserved to 6344 the application. Document wide information are needed for example to 6345 decode entities and it's a good coding practice to define a namespace for 6346 your application set of data and test that the element and attributes 6347 you're analyzing actually pertains to your application space. This is 6348 done by a simple equality test (cur->ns == ns).</li> 6349 <li>To retrieve text and attributes value, you can use the function 6350 <em>xmlNodeListGetString</em> to gather all the text and entity reference 6351 nodes generated by the DOM output and produce an single text string.</li> 6352 </ul> 6353 6354 <p>Here is another piece of code used to parse another level of the 6355 structure:</p> 6356 <pre>#include <libxml/tree.h> 6357 /* 6358 * a Description for a Job 6359 */ 6360 typedef struct job { 6361 char *projectID; 6362 char *application; 6363 char *category; 6364 personPtr contact; 6365 int nbDevelopers; 6366 personPtr developers[100]; /* using dynamic alloc is left as an exercise */ 6367 } job, *jobPtr; 6368 6369 /* 6370 * And the code needed to parse it 6371 */ 6372 jobPtr parseJob(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur) { 6373 jobPtr ret = NULL; 6374 6375 DEBUG("parseJob\n"); 6376 /* 6377 * allocate the struct 6378 */ 6379 ret = (jobPtr) malloc(sizeof(job)); 6380 if (ret == NULL) { 6381 fprintf(stderr,"out of memory\n"); 6382 return(NULL); 6383 } 6384 memset(ret, 0, sizeof(job)); 6385 6386 /* We don't care what the top level element name is */ 6387 cur = cur->xmlChildrenNode; 6388 while (cur != NULL) { 6389 6390 if ((!strcmp(cur->name, "Project")) && (cur->ns == ns)) { 6391 ret->projectID = xmlGetProp(cur, "ID"); 6392 if (ret->projectID == NULL) { 6393 fprintf(stderr, "Project has no ID\n"); 6394 } 6395 } 6396 if ((!strcmp(cur->name, "Application")) && (cur->ns == ns)) 6397 ret->application = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6398 if ((!strcmp(cur->name, "Category")) && (cur->ns == ns)) 6399 ret->category = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6400 if ((!strcmp(cur->name, "Contact")) && (cur->ns == ns)) 6401 ret->contact = parsePerson(doc, ns, cur); 6402 cur = cur->next; 6403 } 6404 6405 return(ret); 6406 }</pre> 6407 6408 <p>Once you are used to it, writing this kind of code is quite simple, but 6409 boring. Ultimately, it could be possible to write stubbers taking either C 6410 data structure definitions, a set of XML examples or an XML DTD and produce 6411 the code needed to import and export the content between C data and XML 6412 storage. This is left as an exercise to the reader :-)</p> 6413 6414 <p>Feel free to use <a href="example/gjobread.c">the code for the full C 6415 parsing example</a> as a template, it is also available with Makefile in the 6416 Gnome SVN base under libxml2/example</p> 6417 6418 <h2><a name="Contributi">Contributions</a></h2> 6419 <ul> 6420 <li>Bjorn Reese, William Brack and Thomas Broyer have provided a number of 6421 patches, Gary Pennington worked on the validation API, threading support 6422 and Solaris port.</li> 6423 <li>John Fleck helps maintaining the documentation and man pages.</li> 6424 <li><a href="mailto:igor (a] zlatkovic.com">Igor Zlatkovic</a> is now the 6425 maintainer of the Windows port, <a 6426 href="http://www.zlatkovic.com/projects/libxml/index.html">he provides 6427 binaries</a></li> 6428 <li><a href="mailto:Gary.Pennington (a] sun.com">Gary Pennington</a> provides 6429 <a href="http://garypennington.net/libxml2/">Solaris binaries</a></li> 6430 <li><a 6431 href="http://mail.gnome.org/archives/xml/2001-March/msg00014.html">Matt 6432 Sergeant</a> developed <a 6433 href="http://axkit.org/download/">XML::LibXSLT</a>, a Perl wrapper for 6434 libxml2/libxslt as part of the <a href="http://axkit.com/">AxKit XML 6435 application server</a></li> 6436 <li><a href="mailto:fnatter (a] gmx.net">Felix Natter</a> and <a 6437 href="mailto:geertk (a] ai.rug.nl">Geert Kloosterman</a> provide <a 6438 href="libxml-doc.el">an emacs module</a> to lookup libxml(2) functions 6439 documentation</li> 6440 <li><a href="mailto:sherwin (a] nlm.nih.gov">Ziying Sherwin</a> provided <a 6441 href="http://xmlsoft.org/messages/0488.html">man pages</a></li> 6442 <li>there is a module for <a 6443 href="http://acs-misc.sourceforge.net/nsxml.html">libxml/libxslt support 6444 in OpenNSD/AOLServer</a></li> 6445 <li><a href="mailto:dkuhlman (a] cutter.rexx.com">Dave Kuhlman</a> provided the 6446 first version of libxml/libxslt <a 6447 href="http://www.rexx.com/~dkuhlman">wrappers for Python</a></li> 6448 <li>Petr Kozelka provides <a 6449 href="http://sourceforge.net/projects/libxml2-pas">Pascal units to glue 6450 libxml2</a> with Kylix and Delphi and other Pascal compilers</li> 6451 <li><a href="mailto:aleksey (a] aleksey.com">Aleksey Sanin</a> implemented the 6452 <a href="http://www.w3.org/Signature/">XML Canonicalization and XML 6453 Digital Signature</a> <a 6454 href="http://www.aleksey.com/xmlsec/">implementations for libxml2</a></li> 6455 <li><a href="mailto:Steve.Ball (a] explain.com.au">Steve Ball</a> and 6456 contributors maintain <a href="http://tclxml.sourceforge.net/">tcl 6457 bindings for libxml2 and libxslt</a>, as well as <a 6458 href="http://tclxml.sf.net/tkxmllint.html">tkxmllint</a> a GUI for 6459 xmllint and <a href="http://tclxml.sf.net/tkxsltproc.html">tkxsltproc</a> 6460 a GUI for xsltproc.</li> 6461 </ul> 6462 6463 <p></p> 6464 </body> 6465 </html> 6466
