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Source Code File 04-04_xmlprolog

04-04_xmlprolog.c

#include <stdio.h>
#include <stdlib.h>
#include <libxml/parser.h>

int main()
{
    const char filename[] = "sample.xml";
    xmlDocPtr doc;

    doc = xmlParseFile(filename);
    if( doc==NULL )
    {
        fprintf(stderr,"Unable to process %s\n",filename);
        exit(1);
    }
    printf("XML version is %s\n",doc->version);
    printf("XML encoding is %s\n",doc->encoding);

    xmlFreeDoc(doc);

    return(0);
}

Output Screenshot

XML version is 1.0
XML encoding is UTF-8

Notes

* If the prolog information isn't available, NULL pointers are returned for the version and encoding members of the xmlDocPtr structure. Ensure that you test for this possibility in your code.