includexpath.c revision d14bccc241b9e1cdf7718d7c86e4acfb768f2261 
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	result = xmlXPathEvalExpression(xpath, context);
26	if(xmlXPathNodeSetIsEmpty(result->nodesetval)){
27                printf("No result\n");
28		return NULL;
29	}
30	xmlXPathFreeContext(context);
31	return result;
32}
33int
34main(int argc, char **argv) {
35
36	char *docname;
37	xmlDocPtr doc;
38	xmlChar *xpath = ("//keyword");
39	xmlNodeSetPtr nodeset;
40	xmlXPathObjectPtr result;
41	int i;
42	xmlChar *keyword;
43
44	if (argc <= 1) {
45		printf("Usage: %s docname\n", argv[0]);
46		return(0);
47	}
48
49	docname = argv[1];
50	doc = getdoc(docname);
51	result = getnodeset (doc, xpath);
52	if (result) {
53		nodeset = result->nodesetval;
54		for (i=0; i < nodeset->nodeNr; i++) {
55			keyword = xmlNodeListGetString(doc, nodeset->nodeTab[i]->xmlChildrenNode, 1);
56		printf("keyword: %s\n", keyword);
57		xmlFree(keyword);
58		}
59		xmlXPathFreeObject (result);
60	}
61	xmlFreeDoc(doc);
62	xmlCleanupParser();
63	return (1);
64}
65]]>
66