1 // Copyright (C) 2016 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 /* 4 ****************************************************************************** 5 * 6 * Copyright (C) 1997-2016, International Business Machines 7 * Corporation and others. All Rights Reserved. 8 * 9 ****************************************************************************** 10 * 11 * FILE NAME : platform.h 12 * 13 * Date Name Description 14 * 05/13/98 nos Creation (content moved here from ptypes.h). 15 * 03/02/99 stephen Added AS400 support. 16 * 03/30/99 stephen Added Linux support. 17 * 04/13/99 stephen Reworked for autoconf. 18 ****************************************************************************** 19 */ 20 21 #ifndef _PLATFORM_H 22 #define _PLATFORM_H 23 24 #include "unicode/uconfig.h" 25 #include "unicode/uvernum.h" 26 27 /** 28 * \file 29 * \brief Basic types for the platform. 30 * 31 * This file used to be generated by autoconf/configure. 32 * Starting with ICU 49, platform.h is a normal source file, 33 * to simplify cross-compiling and working with non-autoconf/make build systems. 34 * 35 * When a value in this file does not work on a platform, then please 36 * try to derive it from the U_PLATFORM value 37 * (for which we might need a new value constant in rare cases) 38 * and/or from other macros that are predefined by the compiler 39 * or defined in standard (POSIX or platform or compiler) headers. 40 * 41 * As a temporary workaround, you can add an explicit <code>#define</code> for some macros 42 * before it is first tested, or add an equivalent -D macro definition 43 * to the compiler's command line. 44 * 45 * Note: Some compilers provide ways to show the predefined macros. 46 * For example, with gcc you can compile an empty .c file and have the compiler 47 * print the predefined macros with 48 * \code 49 * gcc -E -dM -x c /dev/null | sort 50 * \endcode 51 * (You can provide an actual empty .c file rather than /dev/null. 52 * <code>-x c++</code> is for C++.) 53 */ 54 55 /** 56 * Define some things so that they can be documented. 57 * @internal 58 */ 59 #ifdef U_IN_DOXYGEN 60 /* 61 * Problem: "platform.h:335: warning: documentation for unknown define U_HAVE_STD_STRING found." means that U_HAVE_STD_STRING is not documented. 62 * Solution: #define any defines for non @internal API here, so that they are visible in the docs. If you just set PREDEFINED in Doxyfile.in, they won't be documented. 63 */ 64 65 /* None for now. */ 66 #endif 67 68 /** 69 * \def U_PLATFORM 70 * The U_PLATFORM macro defines the platform we're on. 71 * 72 * We used to define one different, value-less macro per platform. 73 * That made it hard to know the set of relevant platforms and macros, 74 * and hard to deal with variants of platforms. 75 * 76 * Starting with ICU 49, we define platforms as numeric macros, 77 * with ranges of values for related platforms and their variants. 78 * The U_PLATFORM macro is set to one of these values. 79 * 80 * Historical note from the Solaris Wikipedia article: 81 * AT&T and Sun collaborated on a project to merge the most popular Unix variants 82 * on the market at that time: BSD, System V, and Xenix. 83 * This became Unix System V Release 4 (SVR4). 84 * 85 * @internal 86 */ 87 88 /** Unknown platform. @internal */ 89 #define U_PF_UNKNOWN 0 90 /** Windows @internal */ 91 #define U_PF_WINDOWS 1000 92 /** MinGW. Windows, calls to Win32 API, but using GNU gcc and binutils. @internal */ 93 #define U_PF_MINGW 1800 94 /** 95 * Cygwin. Windows, calls to cygwin1.dll for Posix functions, 96 * using MSVC or GNU gcc and binutils. 97 * @internal 98 */ 99 #define U_PF_CYGWIN 1900 100 /* Reserve 2000 for U_PF_UNIX? */ 101 /** HP-UX is based on UNIX System V. @internal */ 102 #define U_PF_HPUX 2100 103 /** Solaris is a Unix operating system based on SVR4. @internal */ 104 #define U_PF_SOLARIS 2600 105 /** BSD is a UNIX operating system derivative. @internal */ 106 #define U_PF_BSD 3000 107 /** AIX is based on UNIX System V Releases and 4.3 BSD. @internal */ 108 #define U_PF_AIX 3100 109 /** IRIX is based on UNIX System V with BSD extensions. @internal */ 110 #define U_PF_IRIX 3200 111 /** 112 * Darwin is a POSIX-compliant operating system, composed of code developed by Apple, 113 * as well as code derived from NeXTSTEP, BSD, and other projects, 114 * built around the Mach kernel. 115 * Darwin forms the core set of components upon which Mac OS X, Apple TV, and iOS are based. 116 * (Original description modified from WikiPedia.) 117 * @internal 118 */ 119 #define U_PF_DARWIN 3500 120 /** iPhone OS (iOS) is a derivative of Mac OS X. @internal */ 121 #define U_PF_IPHONE 3550 122 /** QNX is a commercial Unix-like real-time operating system related to BSD. @internal */ 123 #define U_PF_QNX 3700 124 /** Linux is a Unix-like operating system. @internal */ 125 #define U_PF_LINUX 4000 126 /** 127 * Native Client is pretty close to Linux. 128 * See https://developer.chrome.com/native-client and 129 * http://www.chromium.org/nativeclient 130 * @internal 131 */ 132 #define U_PF_BROWSER_NATIVE_CLIENT 4020 133 /** Android is based on Linux. @internal */ 134 #define U_PF_ANDROID 4050 135 /* Maximum value for Linux-based platform is 4499 */ 136 /** z/OS is the successor to OS/390 which was the successor to MVS. @internal */ 137 #define U_PF_OS390 9000 138 /** "IBM i" is the current name of what used to be i5/OS and earlier OS/400. @internal */ 139 #define U_PF_OS400 9400 140 141 #ifdef U_PLATFORM 142 /* Use the predefined value. */ 143 #elif defined(__MINGW32__) 144 # define U_PLATFORM U_PF_MINGW 145 #elif defined(__CYGWIN__) 146 # define U_PLATFORM U_PF_CYGWIN 147 #elif defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64) 148 # define U_PLATFORM U_PF_WINDOWS 149 #elif defined(__ANDROID__) 150 # define U_PLATFORM U_PF_ANDROID 151 /* Android wchar_t support depends on the API level. */ 152 # include <android/api-level.h> 153 #elif defined(__native_client__) 154 # define U_PLATFORM U_PF_BROWSER_NATIVE_CLIENT 155 #elif defined(linux) || defined(__linux__) || defined(__linux) 156 # define U_PLATFORM U_PF_LINUX 157 #elif defined(__APPLE__) && defined(__MACH__) 158 # include <TargetConditionals.h> 159 # if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE /* variant of TARGET_OS_MAC */ 160 # define U_PLATFORM U_PF_IPHONE 161 # else 162 # define U_PLATFORM U_PF_DARWIN 163 # endif 164 #elif defined(BSD) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__MirBSD__) 165 # if defined(__FreeBSD__) 166 # include <sys/endian.h> 167 # endif 168 # define U_PLATFORM U_PF_BSD 169 #elif defined(sun) || defined(__sun) 170 /* Check defined(__SVR4) || defined(__svr4__) to distinguish Solaris from SunOS? */ 171 # define U_PLATFORM U_PF_SOLARIS 172 # if defined(__GNUC__) 173 /* Solaris/GCC needs this header file to get the proper endianness. Normally, this 174 * header file is included with stddef.h but on Solairs/GCC, the GCC version of stddef.h 175 * is included which does not include this header file. 176 */ 177 # include <sys/isa_defs.h> 178 # endif 179 #elif defined(_AIX) || defined(__TOS_AIX__) 180 # define U_PLATFORM U_PF_AIX 181 #elif defined(_hpux) || defined(hpux) || defined(__hpux) 182 # define U_PLATFORM U_PF_HPUX 183 #elif defined(sgi) || defined(__sgi) 184 # define U_PLATFORM U_PF_IRIX 185 #elif defined(__QNX__) || defined(__QNXNTO__) 186 # define U_PLATFORM U_PF_QNX 187 #elif defined(__TOS_MVS__) 188 # define U_PLATFORM U_PF_OS390 189 #elif defined(__OS400__) || defined(__TOS_OS400__) 190 # define U_PLATFORM U_PF_OS400 191 #else 192 # define U_PLATFORM U_PF_UNKNOWN 193 #endif 194 195 /** 196 * \def CYGWINMSVC 197 * Defined if this is Windows with Cygwin, but using MSVC rather than gcc. 198 * Otherwise undefined. 199 * @internal 200 */ 201 /* Commented out because this is already set in mh-cygwin-msvc 202 #if U_PLATFORM == U_PF_CYGWIN && defined(_MSC_VER) 203 # define CYGWINMSVC 204 #endif 205 */ 206 207 /** 208 * \def U_PLATFORM_USES_ONLY_WIN32_API 209 * Defines whether the platform uses only the Win32 API. 210 * Set to 1 for Windows/MSVC and MinGW but not Cygwin. 211 * @internal 212 */ 213 #ifdef U_PLATFORM_USES_ONLY_WIN32_API 214 /* Use the predefined value. */ 215 #elif (U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_MINGW) || defined(CYGWINMSVC) 216 # define U_PLATFORM_USES_ONLY_WIN32_API 1 217 #else 218 /* Cygwin implements POSIX. */ 219 # define U_PLATFORM_USES_ONLY_WIN32_API 0 220 #endif 221 222 /** 223 * \def U_PLATFORM_HAS_WIN32_API 224 * Defines whether the Win32 API is available on the platform. 225 * Set to 1 for Windows/MSVC, MinGW and Cygwin. 226 * @internal 227 */ 228 #ifdef U_PLATFORM_HAS_WIN32_API 229 /* Use the predefined value. */ 230 #elif U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN 231 # define U_PLATFORM_HAS_WIN32_API 1 232 #else 233 # define U_PLATFORM_HAS_WIN32_API 0 234 #endif 235 236 /** 237 * \def U_PLATFORM_IMPLEMENTS_POSIX 238 * Defines whether the platform implements (most of) the POSIX API. 239 * Set to 1 for Cygwin and most other platforms. 240 * @internal 241 */ 242 #ifdef U_PLATFORM_IMPLEMENTS_POSIX 243 /* Use the predefined value. */ 244 #elif U_PLATFORM_USES_ONLY_WIN32_API 245 # define U_PLATFORM_IMPLEMENTS_POSIX 0 246 #else 247 # define U_PLATFORM_IMPLEMENTS_POSIX 1 248 #endif 249 250 /** 251 * \def U_PLATFORM_IS_LINUX_BASED 252 * Defines whether the platform is Linux or one of its derivatives. 253 * @internal 254 */ 255 #ifdef U_PLATFORM_IS_LINUX_BASED 256 /* Use the predefined value. */ 257 #elif U_PF_LINUX <= U_PLATFORM && U_PLATFORM <= 4499 258 # define U_PLATFORM_IS_LINUX_BASED 1 259 #else 260 # define U_PLATFORM_IS_LINUX_BASED 0 261 #endif 262 263 /** 264 * \def U_PLATFORM_IS_DARWIN_BASED 265 * Defines whether the platform is Darwin or one of its derivatives. 266 * @internal 267 */ 268 #ifdef U_PLATFORM_IS_DARWIN_BASED 269 /* Use the predefined value. */ 270 #elif U_PF_DARWIN <= U_PLATFORM && U_PLATFORM <= U_PF_IPHONE 271 # define U_PLATFORM_IS_DARWIN_BASED 1 272 #else 273 # define U_PLATFORM_IS_DARWIN_BASED 0 274 #endif 275 276 /** 277 * \def U_HAVE_STDINT_H 278 * Defines whether stdint.h is available. It is a C99 standard header. 279 * We used to include inttypes.h which includes stdint.h but we usually do not need 280 * the additional definitions from inttypes.h. 281 * @internal 282 */ 283 #ifdef U_HAVE_STDINT_H 284 /* Use the predefined value. */ 285 #elif U_PLATFORM_USES_ONLY_WIN32_API 286 # if defined(__BORLANDC__) || U_PLATFORM == U_PF_MINGW || (defined(_MSC_VER) && _MSC_VER>=1600) 287 /* Windows Visual Studio 9 and below do not have stdint.h & inttypes.h, but VS 2010 adds them. */ 288 # define U_HAVE_STDINT_H 1 289 # else 290 # define U_HAVE_STDINT_H 0 291 # endif 292 #elif U_PLATFORM == U_PF_SOLARIS 293 /* Solaris has inttypes.h but not stdint.h. */ 294 # define U_HAVE_STDINT_H 0 295 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER) 296 /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */ 297 # define U_HAVE_STDINT_H 0 298 #else 299 # define U_HAVE_STDINT_H 1 300 #endif 301 302 /** 303 * \def U_HAVE_INTTYPES_H 304 * Defines whether inttypes.h is available. It is a C99 standard header. 305 * We include inttypes.h where it is available but stdint.h is not. 306 * @internal 307 */ 308 #ifdef U_HAVE_INTTYPES_H 309 /* Use the predefined value. */ 310 #elif U_PLATFORM == U_PF_SOLARIS 311 /* Solaris has inttypes.h but not stdint.h. */ 312 # define U_HAVE_INTTYPES_H 1 313 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER) 314 /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */ 315 # define U_HAVE_INTTYPES_H 1 316 #else 317 /* Most platforms have both inttypes.h and stdint.h, or neither. */ 318 # define U_HAVE_INTTYPES_H U_HAVE_STDINT_H 319 #endif 320 321 /** 322 * \def U_IOSTREAM_SOURCE 323 * Defines what support for C++ streams is available. 324 * 325 * If U_IOSTREAM_SOURCE is set to 199711, then <iostream> is available 326 * (the ISO/IEC C++ FDIS was published in November 1997), and then 327 * one should qualify streams using the std namespace in ICU header 328 * files. 329 * Starting with ICU 49, this is the only supported version. 330 * 331 * If U_IOSTREAM_SOURCE is set to 198506, then <iostream.h> is 332 * available instead (in June 1985 Stroustrup published 333 * "An Extensible I/O Facility for C++" at the summer USENIX conference). 334 * Starting with ICU 49, this version is not supported any more. 335 * 336 * If U_IOSTREAM_SOURCE is 0 (or any value less than 199711), 337 * then C++ streams are not available and 338 * support for them will be silently suppressed in ICU. 339 * 340 * @internal 341 */ 342 #ifndef U_IOSTREAM_SOURCE 343 #define U_IOSTREAM_SOURCE 199711 344 #endif 345 346 /** 347 * \def U_HAVE_STD_STRING 348 * Defines whether the standard C++ (STL) <string> header is available. 349 * @internal 350 */ 351 #ifdef U_HAVE_STD_STRING 352 /* Use the predefined value. */ 353 #else 354 # define U_HAVE_STD_STRING 1 355 #endif 356 357 /*===========================================================================*/ 358 /** @{ Compiler and environment features */ 359 /*===========================================================================*/ 360 361 /** 362 * \def U_GCC_MAJOR_MINOR 363 * Indicates whether the compiler is gcc (test for != 0), 364 * and if so, contains its major (times 100) and minor version numbers. 365 * If the compiler is not gcc, then U_GCC_MAJOR_MINOR == 0. 366 * 367 * For example, for testing for whether we have gcc, and whether it's 4.6 or higher, 368 * use "#if U_GCC_MAJOR_MINOR >= 406". 369 * @internal 370 */ 371 #ifdef __GNUC__ 372 # define U_GCC_MAJOR_MINOR (__GNUC__ * 100 + __GNUC_MINOR__) 373 #else 374 # define U_GCC_MAJOR_MINOR 0 375 #endif 376 377 /** 378 * \def U_IS_BIG_ENDIAN 379 * Determines the endianness of the platform. 380 * @internal 381 */ 382 #ifdef U_IS_BIG_ENDIAN 383 /* Use the predefined value. */ 384 #elif defined(BYTE_ORDER) && defined(BIG_ENDIAN) 385 # define U_IS_BIG_ENDIAN (BYTE_ORDER == BIG_ENDIAN) 386 #elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) 387 /* gcc */ 388 # define U_IS_BIG_ENDIAN (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) 389 #elif defined(__BIG_ENDIAN__) || defined(_BIG_ENDIAN) 390 # define U_IS_BIG_ENDIAN 1 391 #elif defined(__LITTLE_ENDIAN__) || defined(_LITTLE_ENDIAN) 392 # define U_IS_BIG_ENDIAN 0 393 #elif U_PLATFORM == U_PF_OS390 || U_PLATFORM == U_PF_OS400 || defined(__s390__) || defined(__s390x__) 394 /* These platforms do not appear to predefine any endianness macros. */ 395 # define U_IS_BIG_ENDIAN 1 396 #elif defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) 397 /* HPPA do not appear to predefine any endianness macros. */ 398 # define U_IS_BIG_ENDIAN 1 399 #elif defined(sparc) || defined(__sparc) || defined(__sparc__) 400 /* Some sparc based systems (e.g. Linux) do not predefine any endianness macros. */ 401 # define U_IS_BIG_ENDIAN 1 402 #else 403 # define U_IS_BIG_ENDIAN 0 404 #endif 405 406 /** 407 * \def U_HAVE_PLACEMENT_NEW 408 * Determines whether to override placement new and delete for STL. 409 * @stable ICU 2.6 410 */ 411 #ifdef U_HAVE_PLACEMENT_NEW 412 /* Use the predefined value. */ 413 #elif defined(__BORLANDC__) 414 # define U_HAVE_PLACEMENT_NEW 0 415 #else 416 # define U_HAVE_PLACEMENT_NEW 1 417 #endif 418 419 /** 420 * \def U_HAVE_DEBUG_LOCATION_NEW 421 * Define this to define the MFC debug version of the operator new. 422 * 423 * @stable ICU 3.4 424 */ 425 #ifdef U_HAVE_DEBUG_LOCATION_NEW 426 /* Use the predefined value. */ 427 #elif defined(_MSC_VER) 428 # define U_HAVE_DEBUG_LOCATION_NEW 1 429 #else 430 # define U_HAVE_DEBUG_LOCATION_NEW 0 431 #endif 432 433 /* Compatibility with non clang compilers: http://clang.llvm.org/docs/LanguageExtensions.html */ 434 #ifndef __has_attribute 435 # define __has_attribute(x) 0 436 #endif 437 #ifndef __has_cpp_attribute 438 # define __has_cpp_attribute(x) 0 439 #endif 440 #ifndef __has_builtin 441 # define __has_builtin(x) 0 442 #endif 443 #ifndef __has_feature 444 # define __has_feature(x) 0 445 #endif 446 #ifndef __has_extension 447 # define __has_extension(x) 0 448 #endif 449 #ifndef __has_warning 450 # define __has_warning(x) 0 451 #endif 452 453 /** 454 * \def U_MALLOC_ATTR 455 * Attribute to mark functions as malloc-like 456 * @internal 457 */ 458 #if defined(__GNUC__) && __GNUC__>=3 459 # define U_MALLOC_ATTR __attribute__ ((__malloc__)) 460 #else 461 # define U_MALLOC_ATTR 462 #endif 463 464 /** 465 * \def U_ALLOC_SIZE_ATTR 466 * Attribute to specify the size of the allocated buffer for malloc-like functions 467 * @internal 468 */ 469 #if (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) || __has_attribute(alloc_size) 470 # define U_ALLOC_SIZE_ATTR(X) __attribute__ ((alloc_size(X))) 471 # define U_ALLOC_SIZE_ATTR2(X,Y) __attribute__ ((alloc_size(X,Y))) 472 #else 473 # define U_ALLOC_SIZE_ATTR(X) 474 # define U_ALLOC_SIZE_ATTR2(X,Y) 475 #endif 476 477 /** 478 * \def U_CPLUSPLUS_VERSION 479 * 0 if no C++; 1, 11, 14, ... if C++. 480 * Support for specific features cannot always be determined by the C++ version alone. 481 * @internal 482 */ 483 #ifdef U_CPLUSPLUS_VERSION 484 # if U_CPLUSPLUS_VERSION != 0 && !defined(__cplusplus) 485 # undef U_CPLUSPLUS_VERSION 486 # define U_CPLUSPLUS_VERSION 0 487 # endif 488 /* Otherwise use the predefined value. */ 489 #elif !defined(__cplusplus) 490 # define U_CPLUSPLUS_VERSION 0 491 #elif __cplusplus >= 201402L 492 # define U_CPLUSPLUS_VERSION 14 493 #elif __cplusplus >= 201103L 494 # define U_CPLUSPLUS_VERSION 11 495 #else 496 // C++98 or C++03 497 # define U_CPLUSPLUS_VERSION 1 498 #endif 499 500 /** 501 * \def U_HAVE_RVALUE_REFERENCES 502 * Set to 1 if the compiler supports rvalue references. 503 * C++11 feature, necessary for move constructor & move assignment. 504 * @internal 505 */ 506 #ifdef U_HAVE_RVALUE_REFERENCES 507 /* Use the predefined value. */ 508 #elif U_CPLUSPLUS_VERSION >= 11 || __has_feature(cxx_rvalue_references) \ 509 || defined(__GXX_EXPERIMENTAL_CXX0X__) \ 510 || (defined(_MSC_VER) && _MSC_VER >= 1600) /* Visual Studio 2010 */ 511 # define U_HAVE_RVALUE_REFERENCES 1 512 #else 513 # define U_HAVE_RVALUE_REFERENCES 0 514 #endif 515 516 /** 517 * \def U_NOEXCEPT 518 * "noexcept" if supported, otherwise empty. 519 * Some code, especially STL containers, uses move semantics of objects only 520 * if the move constructor and the move operator are declared as not throwing exceptions. 521 * @internal 522 */ 523 #ifdef U_NOEXCEPT 524 /* Use the predefined value. */ 525 #elif defined(_HAS_EXCEPTIONS) && !_HAS_EXCEPTIONS /* Visual Studio */ 526 # define U_NOEXCEPT 527 #elif U_CPLUSPLUS_VERSION >= 11 || __has_feature(cxx_noexcept) || __has_extension(cxx_noexcept) \ 528 || (defined(_MSC_VER) && _MSC_VER >= 1900) /* Visual Studio 2015 */ 529 # define U_NOEXCEPT noexcept 530 #else 531 # define U_NOEXCEPT 532 #endif 533 534 /** 535 * \def U_FALLTHROUGH 536 * Annotate intentional fall-through between switch labels. 537 * http://clang.llvm.org/docs/AttributeReference.html#fallthrough-clang-fallthrough 538 * @internal 539 */ 540 #ifdef __cplusplus 541 # if __has_cpp_attribute(clang::fallthrough) || \ 542 (__has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")) 543 # define U_FALLTHROUGH [[clang::fallthrough]] 544 # else 545 # define U_FALLTHROUGH 546 # endif 547 #else 548 # define U_FALLTHROUGH 549 #endif 550 551 552 /** @} */ 553 554 /*===========================================================================*/ 555 /** @{ Character data types */ 556 /*===========================================================================*/ 557 558 /** 559 * U_CHARSET_FAMILY is equal to this value when the platform is an ASCII based platform. 560 * @stable ICU 2.0 561 */ 562 #define U_ASCII_FAMILY 0 563 564 /** 565 * U_CHARSET_FAMILY is equal to this value when the platform is an EBCDIC based platform. 566 * @stable ICU 2.0 567 */ 568 #define U_EBCDIC_FAMILY 1 569 570 /** 571 * \def U_CHARSET_FAMILY 572 * 573 * <p>These definitions allow to specify the encoding of text 574 * in the char data type as defined by the platform and the compiler. 575 * It is enough to determine the code point values of "invariant characters", 576 * which are the ones shared by all encodings that are in use 577 * on a given platform.</p> 578 * 579 * <p>Those "invariant characters" should be all the uppercase and lowercase 580 * latin letters, the digits, the space, and "basic punctuation". 581 * Also, '\\n', '\\r', '\\t' should be available.</p> 582 * 583 * <p>The list of "invariant characters" is:<br> 584 * \code 585 * A-Z a-z 0-9 SPACE " % & ' ( ) * + , - . / : ; < = > ? _ 586 * \endcode 587 * <br> 588 * (52 letters + 10 numbers + 20 punc/sym/space = 82 total)</p> 589 * 590 * <p>This matches the IBM Syntactic Character Set (CS 640).</p> 591 * 592 * <p>In other words, all the graphic characters in 7-bit ASCII should 593 * be safely accessible except the following:</p> 594 * 595 * \code 596 * '\' <backslash> 597 * '[' <left bracket> 598 * ']' <right bracket> 599 * '{' <left brace> 600 * '}' <right brace> 601 * '^' <circumflex> 602 * '~' <tilde> 603 * '!' <exclamation mark> 604 * '#' <number sign> 605 * '|' <vertical line> 606 * '$' <dollar sign> 607 * '@' <commercial at> 608 * '`' <grave accent> 609 * \endcode 610 * @stable ICU 2.0 611 */ 612 #ifdef U_CHARSET_FAMILY 613 /* Use the predefined value. */ 614 #elif U_PLATFORM == U_PF_OS390 && (!defined(__CHARSET_LIB) || !__CHARSET_LIB) 615 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY 616 #elif U_PLATFORM == U_PF_OS400 && !defined(__UTF32__) 617 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY 618 #else 619 # define U_CHARSET_FAMILY U_ASCII_FAMILY 620 #endif 621 622 /** 623 * \def U_CHARSET_IS_UTF8 624 * 625 * Hardcode the default charset to UTF-8. 626 * 627 * If this is set to 1, then 628 * - ICU will assume that all non-invariant char*, StringPiece, std::string etc. 629 * contain UTF-8 text, regardless of what the system API uses 630 * - some ICU code will use fast functions like u_strFromUTF8() 631 * rather than the more general and more heavy-weight conversion API (ucnv.h) 632 * - ucnv_getDefaultName() always returns "UTF-8" 633 * - ucnv_setDefaultName() is disabled and will not change the default charset 634 * - static builds of ICU are smaller 635 * - more functionality is available with the UCONFIG_NO_CONVERSION build-time 636 * configuration option (see unicode/uconfig.h) 637 * - the UCONFIG_NO_CONVERSION build option in uconfig.h is more usable 638 * 639 * @stable ICU 4.2 640 * @see UCONFIG_NO_CONVERSION 641 */ 642 #ifdef U_CHARSET_IS_UTF8 643 /* Use the predefined value. */ 644 #elif U_PLATFORM == U_PF_ANDROID || U_PLATFORM_IS_DARWIN_BASED 645 # define U_CHARSET_IS_UTF8 1 646 #elif U_PLATFORM_IS_LINUX_BASED 647 /* 648 * Google-specific: Set to 1 to match the google3 execution environment's 649 * use of UTF-8, on both Linux server and workstation machines. 650 */ 651 # define U_CHARSET_IS_UTF8 1 652 #else 653 # define U_CHARSET_IS_UTF8 0 654 #endif 655 656 /** @} */ 657 658 /*===========================================================================*/ 659 /** @{ Information about wchar support */ 660 /*===========================================================================*/ 661 662 /** 663 * \def U_HAVE_WCHAR_H 664 * Indicates whether <wchar.h> is available (1) or not (0). Set to 1 by default. 665 * 666 * @stable ICU 2.0 667 */ 668 #ifdef U_HAVE_WCHAR_H 669 /* Use the predefined value. */ 670 #elif U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9 671 /* 672 * Android before Gingerbread (Android 2.3, API level 9) did not support wchar_t. 673 * The type and header existed, but the library functions did not work as expected. 674 * The size of wchar_t was 1 but L"xyz" string literals had 32-bit units anyway. 675 */ 676 # define U_HAVE_WCHAR_H 0 677 #else 678 # define U_HAVE_WCHAR_H 1 679 #endif 680 681 /** 682 * \def U_SIZEOF_WCHAR_T 683 * U_SIZEOF_WCHAR_T==sizeof(wchar_t) 684 * 685 * @stable ICU 2.0 686 */ 687 #ifdef U_SIZEOF_WCHAR_T 688 /* Use the predefined value. */ 689 #elif (U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9) 690 /* 691 * Classic Mac OS and Mac OS X before 10.3 (Panther) did not support wchar_t or wstring. 692 * Newer Mac OS X has size 4. 693 */ 694 # define U_SIZEOF_WCHAR_T 1 695 #elif U_PLATFORM_HAS_WIN32_API || U_PLATFORM == U_PF_CYGWIN 696 # define U_SIZEOF_WCHAR_T 2 697 #elif U_PLATFORM == U_PF_AIX 698 /* 699 * AIX 6.1 information, section "Wide character data representation": 700 * "... the wchar_t datatype is 32-bit in the 64-bit environment and 701 * 16-bit in the 32-bit environment." 702 * and 703 * "All locales use Unicode for their wide character code values (process code), 704 * except the IBM-eucTW codeset." 705 */ 706 # ifdef __64BIT__ 707 # define U_SIZEOF_WCHAR_T 4 708 # else 709 # define U_SIZEOF_WCHAR_T 2 710 # endif 711 #elif U_PLATFORM == U_PF_OS390 712 /* 713 * z/OS V1R11 information center, section "LP64 | ILP32": 714 * "In 31-bit mode, the size of long and pointers is 4 bytes and the size of wchar_t is 2 bytes. 715 * Under LP64, the size of long and pointer is 8 bytes and the size of wchar_t is 4 bytes." 716 */ 717 # ifdef _LP64 718 # define U_SIZEOF_WCHAR_T 4 719 # else 720 # define U_SIZEOF_WCHAR_T 2 721 # endif 722 #elif U_PLATFORM == U_PF_OS400 723 # if defined(__UTF32__) 724 /* 725 * LOCALETYPE(*LOCALEUTF) is specified. 726 * Wide-character strings are in UTF-32, 727 * narrow-character strings are in UTF-8. 728 */ 729 # define U_SIZEOF_WCHAR_T 4 730 # elif defined(__UCS2__) 731 /* 732 * LOCALETYPE(*LOCALEUCS2) is specified. 733 * Wide-character strings are in UCS-2, 734 * narrow-character strings are in EBCDIC. 735 */ 736 # define U_SIZEOF_WCHAR_T 2 737 #else 738 /* 739 * LOCALETYPE(*CLD) or LOCALETYPE(*LOCALE) is specified. 740 * Wide-character strings are in 16-bit EBCDIC, 741 * narrow-character strings are in EBCDIC. 742 */ 743 # define U_SIZEOF_WCHAR_T 2 744 # endif 745 #else 746 # define U_SIZEOF_WCHAR_T 4 747 #endif 748 749 #ifndef U_HAVE_WCSCPY 750 #define U_HAVE_WCSCPY U_HAVE_WCHAR_H 751 #endif 752 753 /** @} */ 754 755 /** 756 * \def U_HAVE_CHAR16_T 757 * Defines whether the char16_t type is available for UTF-16 758 * and u"abc" UTF-16 string literals are supported. 759 * This is a new standard type and standard string literal syntax in C++0x 760 * but has been available in some compilers before. 761 * @internal 762 */ 763 #ifdef U_HAVE_CHAR16_T 764 /* Use the predefined value. */ 765 #else 766 /* 767 * Notes: 768 * Visual Studio 10 (_MSC_VER>=1600) defines char16_t but 769 * does not support u"abc" string literals. 770 * gcc 4.4 defines the __CHAR16_TYPE__ macro to a usable type but 771 * does not support u"abc" string literals. 772 * C++11 and C11 require support for UTF-16 literals 773 */ 774 # if U_CPLUSPLUS_VERSION >= 11 || (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) 775 # define U_HAVE_CHAR16_T 1 776 # else 777 # define U_HAVE_CHAR16_T 0 778 # endif 779 #endif 780 781 /** 782 * @{ 783 * \def U_DECLARE_UTF16 784 * Do not use this macro because it is not defined on all platforms. 785 * Use the UNICODE_STRING or U_STRING_DECL macros instead. 786 * @internal 787 */ 788 #ifdef U_DECLARE_UTF16 789 /* Use the predefined value. */ 790 #elif U_HAVE_CHAR16_T \ 791 || (defined(__xlC__) && defined(__IBM_UTF_LITERAL) && U_SIZEOF_WCHAR_T != 2) \ 792 || (defined(__HP_aCC) && __HP_aCC >= 035000) \ 793 || (defined(__HP_cc) && __HP_cc >= 111106) 794 # define U_DECLARE_UTF16(string) u ## string 795 #elif U_SIZEOF_WCHAR_T == 2 \ 796 && (U_CHARSET_FAMILY == 0 || (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400 && defined(__UCS2__))) 797 # define U_DECLARE_UTF16(string) L ## string 798 #else 799 /* Leave U_DECLARE_UTF16 undefined. See unistr.h. */ 800 #endif 801 802 /** @} */ 803 804 /*===========================================================================*/ 805 /** @{ Symbol import-export control */ 806 /*===========================================================================*/ 807 808 #ifdef U_EXPORT 809 /* Use the predefined value. */ 810 #elif defined(U_STATIC_IMPLEMENTATION) 811 # define U_EXPORT 812 #elif defined(__GNUC__) 813 # define U_EXPORT __attribute__((visibility("default"))) 814 #elif (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x550) \ 815 || (defined(__SUNPRO_C) && __SUNPRO_C >= 0x550) 816 # define U_EXPORT __global 817 /*#elif defined(__HP_aCC) || defined(__HP_cc) 818 # define U_EXPORT __declspec(dllexport)*/ 819 #elif defined(_MSC_VER) 820 # define U_EXPORT __declspec(dllexport) 821 #else 822 # define U_EXPORT 823 #endif 824 825 /* U_CALLCONV is releated to U_EXPORT2 */ 826 #ifdef U_EXPORT2 827 /* Use the predefined value. */ 828 #elif defined(_MSC_VER) 829 # define U_EXPORT2 __cdecl 830 #else 831 # define U_EXPORT2 832 #endif 833 834 #ifdef U_IMPORT 835 /* Use the predefined value. */ 836 #elif defined(_MSC_VER) 837 /* Windows needs to export/import data. */ 838 # define U_IMPORT __declspec(dllimport) 839 #else 840 # define U_IMPORT 841 #endif 842 843 /** 844 * \def U_CALLCONV 845 * Similar to U_CDECL_BEGIN/U_CDECL_END, this qualifier is necessary 846 * in callback function typedefs to make sure that the calling convention 847 * is compatible. 848 * 849 * This is only used for non-ICU-API functions. 850 * When a function is a public ICU API, 851 * you must use the U_CAPI and U_EXPORT2 qualifiers. 852 * 853 * Please note, you need to use U_CALLCONV after the *. 854 * 855 * NO : "static const char U_CALLCONV *func( . . . )" 856 * YES: "static const char* U_CALLCONV func( . . . )" 857 * 858 * @stable ICU 2.0 859 */ 860 #if U_PLATFORM == U_PF_OS390 && defined(__cplusplus) 861 # define U_CALLCONV __cdecl 862 #else 863 # define U_CALLCONV U_EXPORT2 864 #endif 865 866 /* @} */ 867 868 #endif 869
