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      1 /* Read an XML document from standard input and print an element
      2    outline on standard output.
      3    Must be used with Expat compiled for UTF-8 output.
      4                             __  __            _
      5                          ___\ \/ /_ __   __ _| |_
      6                         / _ \\  /| '_ \ / _` | __|
      7                        |  __//  \| |_) | (_| | |_
      8                         \___/_/\_\ .__/ \__,_|\__|
      9                                  |_| XML parser
     10 
     11    Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
     12    Copyright (c) 2000-2017 Expat development team
     13    Licensed under the MIT license:
     14 
     15    Permission is  hereby granted,  free of charge,  to any  person obtaining
     16    a  copy  of  this  software   and  associated  documentation  files  (the
     17    "Software"),  to  deal in  the  Software  without restriction,  including
     18    without  limitation the  rights  to use,  copy,  modify, merge,  publish,
     19    distribute, sublicense, and/or sell copies of the Software, and to permit
     20    persons  to whom  the Software  is  furnished to  do so,  subject to  the
     21    following conditions:
     22 
     23    The above copyright  notice and this permission notice  shall be included
     24    in all copies or substantial portions of the Software.
     25 
     26    THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
     27    EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
     28    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
     29    NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
     30    DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
     31    OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     32    USE OR OTHER DEALINGS IN THE SOFTWARE.
     33 */
     34 
     35 #include <stdio.h>
     36 #include <expat.h>
     37 
     38 #ifdef XML_LARGE_SIZE
     39 # if defined(XML_USE_MSC_EXTENSIONS) && _MSC_VER < 1400
     40 #  define XML_FMT_INT_MOD "I64"
     41 # else
     42 #  define XML_FMT_INT_MOD "ll"
     43 # endif
     44 #else
     45 # define XML_FMT_INT_MOD "l"
     46 #endif
     47 
     48 #ifdef XML_UNICODE_WCHAR_T
     49 # define XML_FMT_STR "ls"
     50 #else
     51 # define XML_FMT_STR "s"
     52 #endif
     53 
     54 #define BUFFSIZE        8192
     55 
     56 char Buff[BUFFSIZE];
     57 
     58 int Depth;
     59 
     60 static void XMLCALL
     61 start(void *data, const XML_Char *el, const XML_Char **attr)
     62 {
     63   int i;
     64   (void)data;
     65 
     66   for (i = 0; i < Depth; i++)
     67     printf("  ");
     68 
     69   printf("%" XML_FMT_STR, el);
     70 
     71   for (i = 0; attr[i]; i += 2) {
     72     printf(" %" XML_FMT_STR "='%" XML_FMT_STR "'", attr[i], attr[i + 1]);
     73   }
     74 
     75   printf("\n");
     76   Depth++;
     77 }
     78 
     79 static void XMLCALL
     80 end(void *data, const XML_Char *el)
     81 {
     82   (void)data;
     83   (void)el;
     84 
     85   Depth--;
     86 }
     87 
     88 int
     89 main(int argc, char *argv[])
     90 {
     91   XML_Parser p = XML_ParserCreate(NULL);
     92   (void)argc;
     93   (void)argv;
     94 
     95   if (! p) {
     96     fprintf(stderr, "Couldn't allocate memory for parser\n");
     97     exit(-1);
     98   }
     99 
    100   XML_SetElementHandler(p, start, end);
    101 
    102   for (;;) {
    103     int done;
    104     int len;
    105 
    106     len = (int)fread(Buff, 1, BUFFSIZE, stdin);
    107     if (ferror(stdin)) {
    108       fprintf(stderr, "Read error\n");
    109       exit(-1);
    110     }
    111     done = feof(stdin);
    112 
    113     if (XML_Parse(p, Buff, len, done) == XML_STATUS_ERROR) {
    114       fprintf(stderr,
    115               "Parse error at line %" XML_FMT_INT_MOD "u:\n%" XML_FMT_STR "\n",
    116               XML_GetCurrentLineNumber(p),
    117               XML_ErrorString(XML_GetErrorCode(p)));
    118       exit(-1);
    119     }
    120 
    121     if (done)
    122       break;
    123   }
    124   XML_ParserFree(p);
    125   return 0;
    126 }
    127