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