src/expat/examples/elements.c

   1 /* This is simple demonstration of how to use expat. This program
   2    reads an XML document from standard input and writes a line with
   3    the name of each element to standard output indenting child
   4    elements by one tab stop more than their parent element.
   5    It must be used with Expat compiled for UTF-8 output.
   6 */
   7
   8 #include <stdio.h>
   9 #include "expat.h"
  10
  11 #if defined(__amigaos__) && defined(__USE_INLINE__)
  12 #include <proto/expat.h>
  13 #endif
  14
  15 #ifdef XML_LARGE_SIZE
  16 #if defined(XML_USE_MSC_EXTENSIONS) && _MSC_VER < 1400
  17 #define XML_FMT_INT_MOD "I64"
  18 #else
  19 #define XML_FMT_INT_MOD "ll"
  20 #endif
  21 #else
  22 #define XML_FMT_INT_MOD "l"
  23 #endif
  24
  25 static void XMLCALL
  26 startElement(void *userData, const char *name, const char **atts)
  27 {
  28   int i;
  29   int *depthPtr = (int *)userData;
  30   for (i = 0; i < *depthPtr; i++)
  31     putchar('\t');
  32   puts(name);
  33   *depthPtr += 1;
  34 }
  35
  36 static void XMLCALL
  37 endElement(void *userData, const char *name)
  38 {
  39   int *depthPtr = (int *)userData;
  40   *depthPtr -= 1;
  41 }
  42
  43 int
  44 main(int argc, char *argv[])
  45 {
  46   char buf[BUFSIZ];
  47   XML_Parser parser = XML_ParserCreate(NULL);
  48   int done;
  49   int depth = 0;
  50   XML_SetUserData(parser, &depth);
  51   XML_SetElementHandler(parser, startElement, endElement);
  52   do {
  53     int len = (int)fread(buf, 1, sizeof(buf), stdin);
  54     done = len < sizeof(buf);
  55     if (XML_Parse(parser, buf, len, done) == XML_STATUS_ERROR) {
  56       fprintf(stderr,
  57               "%s at line %" XML_FMT_INT_MOD "u\n",
  58               XML_ErrorString(XML_GetErrorCode(parser)),
  59               XML_GetCurrentLineNumber(parser));
  60       return 1;
  61     }
  62   } while (!done);
  63   XML_ParserFree(parser);
  64   return 0;
  65 }