Simple Example to extract data from xml file using expat............

takes an xml file and extract attributes into a file .rtf

#include "stdio.h"

#include "expat.h"

#include"string.h"

#define BUFFSIZE        8000







FILE *rtfFile;





static void startElement(void *cargo, const char *el,const char **attr) 

{

}

static void endElement(void *cargo, const char *el) 

{ 

}

static void characters(void *cargo, const char *ch, int len) 

{

    int i;

    for (i=0; i	putc(ch[i],rtfFile);

}



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

{

    if(argc!=3)

    {

        printf("\nUsage :  
\n");

        exit(0);

    }

    char Buff[BUFFSIZE];

    FILE *fp;

   

    fp = fopen(argv[1],"r");

    rtfFile = fopen(strcat(argv[2],".rtf"),"w");



   XML_Parser parser = XML_ParserCreate(NULL);

   XML_SetElementHandler(parser, startElement, endElement);

   XML_SetCharacterDataHandler(parser, characters);

   

   for (;;) 

   {

      int len  = fread(Buff, 1, BUFFSIZE, fp);

      int done = feof(fp);

      if (! XML_Parse(parser, Buff, len, done))

        exit(-1);

      if (done) break;

   }

   fclose(fp); 

   printf("\n");

    fclose(rtfFile);

   return 0;

}

for Example we can use following content of a

< ?xml version="1.0"?>

< story>

  < storyinfo>

    < author>Ranjeet Kumar</author>

    < datewritten>October 15,1985 </datewritten>

    < keyword>Don</keyword>

  < /storyinfo>

  < body >

    < headline > It's not gonna to help you < /headline >

    < para > Don't be fool < /para >

  < /body >

< /story >