1/**
2 * section: Parsing
3 * synopsis: Parse and validate an XML file to a tree and free the result
4 * purpose: Create a parser context for an XML file, then parse and validate
5 *          the file, creating a tree, check the validation result
6 *          and xmlFreeDoc() to free the resulting tree.
7 * usage: parse2 test2.xml
8 * test: parse2 test2.xml
9 * author: Daniel Veillard
10 * copy: see Copyright for the status of this software.
11 */
12
13#include <stdio.h>
14#include <libxml/parser.h>
15#include <libxml/tree.h>
16
17/**
18 * exampleFunc:
19 * @filename: a filename or an URL
20 *
21 * Parse and validate the resource and free the resulting tree
22 */
23static void
24exampleFunc(const char *filename) {
25    xmlParserCtxtPtr ctxt; /* the parser context */
26    xmlDocPtr doc; /* the resulting document tree */
27
28    /* create a parser context */
29    ctxt = xmlNewParserCtxt();
30    if (ctxt == NULL) {
31        fprintf(stderr, "Failed to allocate parser context\n");
32	return;
33    }
34    /* parse the file, activating the DTD validation option */
35    doc = xmlCtxtReadFile(ctxt, filename, NULL, XML_PARSE_DTDVALID);
36    /* check if parsing suceeded */
37    if (doc == NULL) {
38        fprintf(stderr, "Failed to parse %s\n", filename);
39    } else {
40	/* check if validation suceeded */
41        if (ctxt->valid == 0)
42	    fprintf(stderr, "Failed to validate %s\n", filename);
43	/* free up the resulting document */
44	xmlFreeDoc(doc);
45    }
46    /* free up the parser context */
47    xmlFreeParserCtxt(ctxt);
48}
49
50int main(int argc, char **argv) {
51    if (argc != 2)
52        return(1);
53
54    /*
55     * this initialize the library and check potential ABI mismatches
56     * between the version it was compiled for and the actual shared
57     * library used.
58     */
59    LIBXML_TEST_VERSION
60
61    exampleFunc(argv[1]);
62
63    /*
64     * Cleanup function for the XML library.
65     */
66    xmlCleanupParser();
67    /*
68     * this is to debug memory for regression tests
69     */
70    xmlMemoryDump();
71    return(0);
72}
73