1<![CDATA[
2#include <libxml/parser.h>
3#include <libxml/xpath.h>
4
5xmlDocPtr
6getdoc (char *docname) {
7	xmlDocPtr doc;
8	doc = xmlParseFile(docname);
9
10	if (doc == NULL ) {
11		fprintf(stderr,"Document not parsed successfully. \n");
12		return NULL;
13	}
14
15	return doc;
16}
17
18xmlXPathObjectPtr
19getnodeset (xmlDocPtr doc, xmlChar *xpath){
20
21	xmlXPathContextPtr context;
22	xmlXPathObjectPtr result;
23
24	context = xmlXPathNewContext(doc);
25	if (context == NULL) {
26		printf("Error in xmlXPathNewContext\n");
27		return NULL;
28	}
29	result = xmlXPathEvalExpression(xpath, context);
30	xmlXPathFreeContext(context);
31	if (result == NULL) {
32		printf("Error in xmlXPathEvalExpression\n");
33		return NULL;
34	}
35	if(xmlXPathNodeSetIsEmpty(result->nodesetval)){
36		xmlXPathFreeObject(result);
37                printf("No result\n");
38		return NULL;
39	}
40	return result;
41}
42int
43main(int argc, char **argv) {
44
45	char *docname;
46	xmlDocPtr doc;
47	xmlChar *xpath = (xmlChar*) "//keyword";
48	xmlNodeSetPtr nodeset;
49	xmlXPathObjectPtr result;
50	int i;
51	xmlChar *keyword;
52
53	if (argc <= 1) {
54		printf("Usage: %s docname\n", argv[0]);
55		return(0);
56	}
57
58	docname = argv[1];
59	doc = getdoc(docname);
60	result = getnodeset (doc, xpath);
61	if (result) {
62		nodeset = result->nodesetval;
63		for (i=0; i < nodeset->nodeNr; i++) {
64			keyword = xmlNodeListGetString(doc, nodeset->nodeTab[i]->xmlChildrenNode, 1);
65		printf("keyword: %s\n", keyword);
66		xmlFree(keyword);
67		}
68		xmlXPathFreeObject (result);
69	}
70	xmlFreeDoc(doc);
71	xmlCleanupParser();
72	return (1);
73}
74]]>