libxml2

gabriel_logan
(usa Debian)

Enviado em 09/02/2010 - 16:34h

Galera,

Achei um exemplo de como ler aquivos xml, rodou perfeitamente, fiz a leitura (reader1 test2.xml) de uns arquivos aqui e tal...

//==============================================================

/**

 * 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 reader1.res ; rm reader1.tmp

 * author: Daniel Veillard

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

 */

//------------

//COPILED: gcc `xml2-config --cflags --libs` -o reader1 reader1.c

//------------

#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

//==============================================================

 

Agora tentei abrir um arquivo xml da internet mas nao deu certo, vejam:

cd '/home/logan/ex3'
logan@debian:~$ cd '/home/logan/ex3'
logan@debian:~/ex3$ '/home/logan/ex3/reader1' 'http://www.ovh.pt/produtos/dotie.xml'
error : Operation in progress
Unable to open http://www.ovh.pt/produtos/dotie.xml
logan@debian:~/ex3$

ALGUEM PODERIA ME AJUDAR? COMO FACO PRA ACESSAR UM XML PELA INTERNET?
OBRIGADO

GABRIEL