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 */
23 static void
exampleFunc(const char * filename)24 exampleFunc(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
main(int argc,char ** argv)50 int 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