/**

 * section: xmlReader

 * synopsis: Parse an XML file with an xmlReader

 * purpose: Demonstrate the use of xmlReaderForFile() to parse an XML file

 *          and dump the informations about the nodes found in the process.

 *          (Note that the XMLReader functions require libxml2 version later

 *          than 2.6.)

 * usage: reader1 <filename>

 * test: reader1 test2.xml > reader1.tmp && diff reader1.tmp $(srcdir)/reader1.res

 * author: Daniel Veillard

 * copy: see Copyright for the status of this software.

 */

#include <stdio.h>

#include <libxml/xmlreader.h>

#ifdef LIBXML_READER_ENABLED

/**

 * processNode:

 * @reader: the xmlReader

 *

 * Dump information about the current node

 */

static void

processNode(xmlTextReaderPtr reader) {

    const xmlChar *name, *value;

    name = xmlTextReaderConstName(reader);

    if (name == NULL)

	name = BAD_CAST "--";

    value = xmlTextReaderConstValue(reader);

    printf("%d %d %s %d %d", 

	    xmlTextReaderDepth(reader),

	    xmlTextReaderNodeType(reader),

	    name,

	    xmlTextReaderIsEmptyElement(reader),

	    xmlTextReaderHasValue(reader));

    if (value == NULL)

	printf("\n");

    else {

        if (xmlStrlen(value) > 40)

            printf(" %.40s...\n", value);

        else

	    printf(" %s\n", value);

    }

}

/**

 * streamFile:

 * @filename: the file name to parse

 *

 * Parse and print information about an XML file.

 */

static void

streamFile(const char *filename) {

    xmlTextReaderPtr reader;

    int ret;

    reader = xmlReaderForFile(filename, NULL, 0);

    if (reader != NULL) {

        ret = xmlTextReaderRead(reader);

        while (ret == 1) {

            processNode(reader);

            ret = xmlTextReaderRead(reader);

        }

        xmlFreeTextReader(reader);

        if (ret != 0) {

            fprintf(stderr, "%s : failed to parse\n", filename);

        }

    } else {

        fprintf(stderr, "Unable to open %s\n", filename);

    }

}

int main(int argc, char **argv) {

    if (argc != 2)

        return(1);

    /*

     * this initialize the library and check potential ABI mismatches

     * between the version it was compiled for and the actual shared

     * library used.

     */

    LIBXML_TEST_VERSION

    streamFile(argv[1]);

    /*

     * Cleanup function for the XML library.

     */

    xmlCleanupParser();

    /*

     * this is to debug memory for regression tests

     */

    xmlMemoryDump();

    return(0);

}

#else

int main(void) {

    fprintf(stderr, "XInclude support not compiled in\n");

    exit(1);

}

#endif