elements.c revision 302385 
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
25static void XMLCALL
26startElement(void *userData, const char *name, const char **atts)
27{
28  int i;
29  int *depthPtr = (int *)userData;
30  (void)atts;
31
32  for (i = 0; i < *depthPtr; i++)
33    putchar('\t');
34  puts(name);
35  *depthPtr += 1;
36}
37
38static void XMLCALL
39endElement(void *userData, const char *name)
40{
41  int *depthPtr = (int *)userData;
42  (void)name;
43
44  *depthPtr -= 1;
45}
46
47int
48main(int argc, char *argv[])
49{
50  char buf[BUFSIZ];
51  XML_Parser parser = XML_ParserCreate(NULL);
52  int done;
53  int depth = 0;
54  (void)argc;
55  (void)argv;
56
57  XML_SetUserData(parser, &depth);
58  XML_SetElementHandler(parser, startElement, endElement);
59  do {
60    size_t len = fread(buf, 1, sizeof(buf), stdin);
61    done = len < sizeof(buf);
62    if (XML_Parse(parser, buf, len, done) == XML_STATUS_ERROR) {
63      fprintf(stderr,
64              "%s at line %" XML_FMT_INT_MOD "u\n",
65              XML_ErrorString(XML_GetErrorCode(parser)),
66              XML_GetCurrentLineNumber(parser));
67      return 1;
68    }
69  } while (!done);
70  XML_ParserFree(parser);
71  return 0;
72}
73