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| author | Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org> | 2021-04-30 18:47:09 +0200 |
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| committer | Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org> | 2021-04-30 18:47:09 +0200 |
| commit | 35a201cc8ef0c3f5b2df88d2e528aabee1048348 (patch) | |
| tree | 902dae955480e19f4498dbe4964619fc91d09b06 /libxml2-2.9.10/doc/tutorial/apd.html | |
| download | xml-backup-restore-master.tar.gz xml-backup-restore-master.zip | |
Diffstat (limited to 'libxml2-2.9.10/doc/tutorial/apd.html')
| -rw-r--r-- | libxml2-2.9.10/doc/tutorial/apd.html | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/libxml2-2.9.10/doc/tutorial/apd.html b/libxml2-2.9.10/doc/tutorial/apd.html new file mode 100644 index 0000000..8f9618d --- /dev/null +++ b/libxml2-2.9.10/doc/tutorial/apd.html @@ -0,0 +1,76 @@ +<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>D. Code for XPath Example</title><meta name="generator" content="DocBook XSL Stylesheets V1.61.2"><link rel="home" href="index.html" title="Libxml Tutorial"><link rel="up" href="index.html" title="Libxml Tutorial"><link rel="previous" href="apc.html" title="C. Code for Keyword Example"><link rel="next" href="ape.html" title="E. Code for Add Keyword Example"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">D. Code for XPath Example</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="apc.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="ape.html">Next</a></td></tr></table><hr></div><div class="appendix" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="xpathappendix"></a>D. Code for XPath Example</h2></div></div><div></div></div><p> + </p><pre class="programlisting"> +#include <libxml/parser.h> +#include <libxml/xpath.h> + +xmlDocPtr +getdoc (char *docname) { + xmlDocPtr doc; + doc = xmlParseFile(docname); + + if (doc == NULL ) { + fprintf(stderr,"Document not parsed successfully. \n"); + return NULL; + } + + return doc; +} + +xmlXPathObjectPtr +getnodeset (xmlDocPtr doc, xmlChar *xpath){ + + xmlXPathContextPtr context; + xmlXPathObjectPtr result; + + context = xmlXPathNewContext(doc); + if (context == NULL) { + printf("Error in xmlXPathNewContext\n"); + return NULL; + } + result = xmlXPathEvalExpression(xpath, context); + xmlXPathFreeContext(context); + if (result == NULL) { + printf("Error in xmlXPathEvalExpression\n"); + return NULL; + } + if(xmlXPathNodeSetIsEmpty(result->nodesetval)){ + xmlXPathFreeObject(result); + printf("No result\n"); + return NULL; + } + return result; +} +int +main(int argc, char **argv) { + + char *docname; + xmlDocPtr doc; + xmlChar *xpath = (xmlChar*) "//keyword"; + xmlNodeSetPtr nodeset; + xmlXPathObjectPtr result; + int i; + xmlChar *keyword; + + if (argc <= 1) { + printf("Usage: %s docname\n", argv[0]); + return(0); + } + + docname = argv[1]; + doc = getdoc(docname); + result = getnodeset (doc, xpath); + if (result) { + nodeset = result->nodesetval; + for (i=0; i < nodeset->nodeNr; i++) { + keyword = xmlNodeListGetString(doc, nodeset->nodeTab[i]->xmlChildrenNode, 1); + printf("keyword: %s\n", keyword); + xmlFree(keyword); + } + xmlXPathFreeObject (result); + } + xmlFreeDoc(doc); + xmlCleanupParser(); + return (1); +} +</pre><p> + </p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="apc.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="index.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ape.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">C. Code for Keyword Example </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> E. Code for Add Keyword Example</td></tr></table></div></body></html> |