libs/libxml2-2.6.31/testC14N.c

38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync/*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync * Canonical XML implementation test program
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync * (http://www.w3.org/TR/2001/REC-xml-c14n-20010315)
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync *
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync * See Copyright for the status of this software.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync *
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync * Author: Aleksey Sanin <aleksey@aleksey.com>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include "libxml.h"
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#if defined(LIBXML_C14N_ENABLED) && defined(LIBXML_OUTPUT_ENABLED)
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <stdio.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <string.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#ifdef HAVE_UNISTD_H
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <unistd.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#endif
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#ifdef HAVE_STDLIB_H
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <stdlib.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#endif
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <libxml/xmlmemory.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <libxml/parser.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <libxml/xpath.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <libxml/xpathInternals.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <libxml/c14n.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncstatic void usage(const char *name) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    "Usage: %s <mode> <xml-file> [<xpath-expr>] [<inclusive-ns-list>]\n",
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        name);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr, "where <mode> is one of following:\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    "--with-comments       \t XML file canonization w comments\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    "--without-comments    \t XML file canonization w/o comments\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    "--exc-with-comments   \t Exclusive XML file canonization w comments\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    "--exc-without-comments\t Exclusive XML file canonization w/o comments\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync}
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncstatic xmlXPathObjectPtr
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncload_xpath_expr (xmlDocPtr parent_doc, const char* filename);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncstatic xmlChar **parse_list(xmlChar *str);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync/* static void print_xpath_nodes(xmlNodeSetPtr nodes); */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncstatic int
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsynctest_c14n(const char* xml_filename, int with_comments, int exclusive,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    const char* xpath_filename, xmlChar **inclusive_namespaces) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlDocPtr doc;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlXPathObjectPtr xpath = NULL;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlChar *result = NULL;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    int ret;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * build an XML tree from a the file; we need to add default
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * attributes and resolve all character and entities references
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlLoadExtDtdDefaultValue = XML_DETECT_IDS | XML_COMPLETE_ATTRS;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlSubstituteEntitiesDefault(1);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    doc = xmlReadFile(xml_filename, NULL, XML_PARSE_DTDATTR | XML_PARSE_NOENT);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if (doc == NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr, "Error: unable to parse file \"%s\"\n", xml_filename);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(-1);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * Check the document is of the right kind
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(xmlDocGetRootElement(doc) == NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        fprintf(stderr,"Error: empty document for file \"%s\"\n", xml_filename);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlFreeDoc(doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(-1);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * load xpath file if specified
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(xpath_filename) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xpath = load_xpath_expr(doc, xpath_filename);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(xpath == NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        fprintf(stderr,"Error: unable to evaluate xpath expression\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        xmlFreeDoc(doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        return(-1);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * Canonical form
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /* fprintf(stderr,"File \"%s\" loaded: start canonization\n", xml_filename); */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    ret = xmlC14NDocDumpMemory(doc,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        (xpath) ? xpath->nodesetval : NULL,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        exclusive, inclusive_namespaces,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        with_comments, &result);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(ret >= 0) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(result != NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        write(1, result, ret);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        xmlFree(result);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    } else {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr,"Error: failed to canonicalize XML file \"%s\" (ret=%d)\n", xml_filename, ret);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(result != NULL) xmlFree(result);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlFreeDoc(doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(-1);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * Cleanup
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(xpath != NULL) xmlXPathFreeObject(xpath);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlFreeDoc(doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(ret);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync}
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncint main(int argc, char **argv) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    int ret = -1;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * Init libxml
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlInitParser();
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    LIBXML_TEST_VERSION
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * Parse command line and process file
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if( argc < 3 ) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr, "Error: wrong number of arguments.\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    usage(argv[0]);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    } else if(strcmp(argv[1], "--with-comments") == 0) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    ret = test_c14n(argv[2], 1, 0, (argc > 3) ? argv[3] : NULL, NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    } else if(strcmp(argv[1], "--without-comments") == 0) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    ret = test_c14n(argv[2], 0, 0, (argc > 3) ? argv[3] : NULL, NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    } else if(strcmp(argv[1], "--exc-with-comments") == 0) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlChar **list;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /* load exclusive namespace from command line */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    list = (argc > 4) ? parse_list((xmlChar *)argv[4]) : NULL;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    ret = test_c14n(argv[2], 1, 1, (argc > 3) ? argv[3] : NULL, list);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(list != NULL) xmlFree(list);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    } else if(strcmp(argv[1], "--exc-without-comments") == 0) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlChar **list;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /* load exclusive namespace from command line */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    list = (argc > 4) ? parse_list((xmlChar *)argv[4]) : NULL;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    ret = test_c14n(argv[2], 0, 1, (argc > 3) ? argv[3] : NULL, list);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(list != NULL) xmlFree(list);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    } else {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr, "Error: bad option.\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    usage(argv[0]);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * Shutdown libxml
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlCleanupParser();
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlMemoryDump();
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return((ret >= 0) ? 0 : 1);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync}
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync/*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync * Macro used to grow the current buffer.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#define growBufferReentrant() {                     \
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    buffer_size *= 2;                           \
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    buffer = (xmlChar **)                       \
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync            xmlRealloc(buffer, buffer_size * sizeof(xmlChar*)); \
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if (buffer == NULL) {                       \
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    perror("realloc failed");                   \
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(NULL);                           \
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }                                   \
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync}
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncstatic xmlChar **
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncparse_list(xmlChar *str) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlChar **buffer;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlChar **out = NULL;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    int buffer_size = 0;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    int len;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(str == NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    len = xmlStrlen(str);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if((str[0] == '\'') && (str[len - 1] == '\'')) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    str[len - 1] = '\0';
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    str++;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    len -= 2;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * allocate an translation buffer.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    buffer_size = 1000;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    buffer = (xmlChar **) xmlMalloc(buffer_size * sizeof(xmlChar*));
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if (buffer == NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    perror("malloc failed");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    out = buffer;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    while(*str != '\0') {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if (out - buffer > buffer_size - 10) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        int indx = out - buffer;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        growBufferReentrant();
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        out = &buffer[indx];
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    (*out++) = str;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    while(*str != ',' && *str != '\0') ++str;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(*str == ',') *(str++) = '\0';
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    (*out) = NULL;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return buffer;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync}
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncstatic xmlXPathObjectPtr
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncload_xpath_expr (xmlDocPtr parent_doc, const char* filename) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlXPathObjectPtr xpath;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlDocPtr doc;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlChar *expr;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlXPathContextPtr ctx;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlNodePtr node;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlNsPtr ns;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * load XPath expr as a file
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlLoadExtDtdDefaultValue = XML_DETECT_IDS | XML_COMPLETE_ATTRS;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlSubstituteEntitiesDefault(1);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    doc = xmlReadFile(filename, NULL, XML_PARSE_DTDATTR | XML_PARSE_NOENT);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if (doc == NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr, "Error: unable to parse file \"%s\"\n", filename);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * Check the document is of the right kind
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(xmlDocGetRootElement(doc) == NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        fprintf(stderr,"Error: empty document for file \"%s\"\n", filename);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlFreeDoc(doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    node = doc->children;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    while(node != NULL && !xmlStrEqual(node->name, (const xmlChar *)"XPath")) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    node = node->next;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(node == NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        fprintf(stderr,"Error: XPath element expected in the file  \"%s\"\n", filename);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlFreeDoc(doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    expr = xmlNodeGetContent(node);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(expr == NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        fprintf(stderr,"Error: XPath content element is NULL \"%s\"\n", filename);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlFreeDoc(doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    ctx = xmlXPathNewContext(parent_doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(ctx == NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        fprintf(stderr,"Error: unable to create new context\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        xmlFree(expr);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        xmlFreeDoc(doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        return(NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * Register namespaces
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    ns = node->nsDef;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    while(ns != NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(xmlXPathRegisterNs(ctx, ns->prefix, ns->href) != 0) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        fprintf(stderr,"Error: unable to register NS with prefix=\"%s\" and href=\"%s\"\n", ns->prefix, ns->href);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync            xmlFree(expr);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        xmlXPathFreeContext(ctx);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        xmlFreeDoc(doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        return(NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    ns = ns->next;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     * Evaluate xpath
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync     */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xpath = xmlXPathEvalExpression(expr, ctx);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(xpath == NULL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        fprintf(stderr,"Error: unable to evaluate xpath expression\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        xmlFree(expr);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        xmlXPathFreeContext(ctx);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        xmlFreeDoc(doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        return(NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    /* print_xpath_nodes(xpath->nodesetval); */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlFree(expr);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlXPathFreeContext(ctx);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlFreeDoc(doc);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(xpath);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync}
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync/*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncstatic void
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncprint_xpath_nodes(xmlNodeSetPtr nodes) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    xmlNodePtr cur;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    int i;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(nodes == NULL ){
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr, "Error: no nodes set defined\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    fprintf(stderr, "Nodes Set:\n-----\n");
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    for(i = 0; i < nodes->nodeNr; ++i) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    if(nodes->nodeTab[i]->type == XML_NAMESPACE_DECL) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        xmlNsPtr ns;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        ns = (xmlNsPtr)nodes->nodeTab[i];
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        cur = (xmlNodePtr)ns->next;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        fprintf(stderr, "namespace \"%s\"=\"%s\" for node %s:%s\n",
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync            ns->prefix, ns->href,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync            (cur->ns) ? cur->ns->prefix : BAD_CAST "", cur->name);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    } else if(nodes->nodeTab[i]->type == XML_ELEMENT_NODE) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        cur = nodes->nodeTab[i];
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        fprintf(stderr, "element node \"%s:%s\"\n",
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync            (cur->ns) ? cur->ns->prefix : BAD_CAST "", cur->name);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    } else {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        cur = nodes->nodeTab[i];
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync        fprintf(stderr, "node \"%s\": type %d\n", cur->name, cur->type);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync}
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync*/
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#else
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <stdio.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncint main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    printf("%s : XPath/Canonicalization and output support not compiled in\n", argv[0]);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync    return(0);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync}
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#endif /* LIBXML_C14N_ENABLED */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync