1 /* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd

     2    See the file COPYING for copying permission.

     3 */

     4 /* This is simple demonstration of how to use expat. This program

     5    reads an XML document from standard input and writes a line with

     6    the name of each element to standard output indenting child

     7    elements by one tab stop more than their parent element.

     8 */

     9 

    10 #include <stdio.h>

    11 #include "expat.h"

    12 

    13 static void

    14 startElement(void *userData, const char *name, const char **atts)

    15 {

    16   int i;

    17   int *depthPtr = userData;

    18   for (i = 0; i < *depthPtr; i++)

    19     putchar('\t');

    20   puts(name);

    21   *depthPtr += 1;

    22 }

    23 

    24 static void

    25 endElement(void *userData, const char *name)

    26 {

    27   int *depthPtr = userData;

    28   *depthPtr -= 1;

    29 }

    30 

    31 int

    32 main(int argc, char *argv[])

    33 {

    34   char buf[BUFSIZ];

    35   XML_Parser parser = XML_ParserCreate(NULL);

    36   int done;

    37   int depth = 0;

    38   XML_SetUserData(parser, &depth);

    39   XML_SetElementHandler(parser, startElement, endElement);

    40   do {

    41     size_t len = fread(buf, 1, sizeof(buf), stdin);

    42     done = len < sizeof(buf);

    43     if (XML_Parse(parser, buf, len, done) == XML_STATUS_ERROR) {

    44       fprintf(stderr,

    45               "%s at line %d\n",

    46               XML_ErrorString(XML_GetErrorCode(parser)),

    47               XML_GetCurrentLineNumber(parser));

    48       return 1;

    49     }

    50   } while (!done);

    51   XML_ParserFree(parser);

    52   return 0;

    53 }