el.c

/*
 * =====================================================================================
 *
 *       Filename:  el.c
 *
 *    Description:  
 *
 *        Version:  1.0
 *        Created:  2014年06月19日 10时28分18秒
 *       Revision:  none
 *       Compiler:  gcc
 *
 *         Author:  tl
 *   Organization:  
 *
 * =====================================================================================
 */

#include <stdio.h>
#include <expat.h>

#if defined(__amigaos__) && defined(__USE_INLINE__)
#include <proto/expat.h>
#endif

#ifdef XML_LARGE_SIZE
#if defined(XML_USE_MSC_EXTENSIONS) && _MSC_VER < 1400
#define XML_FMT_INT_MOD "I64"
#else
#define XML_FMT_INT_MOD "ll"
#endif
#else
#define XML_FMT_INT_MOD "l"
#endif

    static void XMLCALL
startElement(void *userData, const char *name, const char **atts)
{
    int i;
    int *depthPtr = (int *)userData;
    for (i = 0; i < *depthPtr; i++)
        putchar('\t');
    puts(name);
    *depthPtr += 1;
}

    static void XMLCALL
endElement(void *userData, const char *name)
{
    int *depthPtr = (int *)userData;
    *depthPtr -= 1;
}

    int
main(int argc, char *argv[])
{
    char buf[BUFSIZ];
    XML_Parser parser = XML_ParserCreate(NULL);
    int done;
    int depth = 0;
    XML_SetUserData(parser, &depth);
    XML_SetElementHandler(parser, startElement, endElement);
    do {
        int len = (int)fread(buf, 1, sizeof(buf), stdin);
        done = len < sizeof(buf);
        if (XML_Parse(parser, buf, len, done) == XML_STATUS_ERROR) {
            fprintf(stderr,
                    "%s at line %" XML_FMT_INT_MOD "u\n",
                    XML_ErrorString(XML_GetErrorCode(parser)),
                    XML_GetCurrentLineNumber(parser));
            return 1;
        }
    } while (!done);
    XML_ParserFree(parser);
    return 0;
}