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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>E.�Code for Add Keyword 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="apd.html" title="D.�Code for XPath Example"><link rel="next" href="apf.html" title="F.�Code for Add Attribute 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">E.�Code for Add Keyword Example</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="apd.html">Prev</a>�</td><th width="60%" align="center">�</th><td width="20%" align="right">�<a accesskey="n" href="apf.html">Next</a></td></tr></table><hr></div><div class="appendix" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="addkeywordappendix"></a>E.�Code for Add Keyword Example</h2></div></div><div></div></div><p>
      </p><pre class="programlisting">
#include &lt;stdio.h&gt;
#include &lt;string.h&gt;
#include &lt;stdlib.h&gt;
#include &lt;libxml/xmlmemory.h&gt;
#include &lt;libxml/parser.h&gt;

void
parseStory (xmlDocPtr doc, xmlNodePtr cur, char *keyword) {

	xmlNewTextChild (cur, NULL, "keyword", keyword);
    return;
}

xmlDocPtr
parseDoc(char *docname, char *keyword) {

	xmlDocPtr doc;
	xmlNodePtr cur;

	doc = xmlParseFile(docname);
	
	if (doc == NULL ) {
		fprintf(stderr,"Document not parsed successfully. \n");
		return (NULL);
	}
	
	cur = xmlDocGetRootElement(doc);
	
	if (cur == NULL) {
		fprintf(stderr,"empty document\n");
		xmlFreeDoc(doc);
		return (NULL);
	}
	
	if (xmlStrcmp(cur-&gt;name, (const xmlChar *) "story")) {
		fprintf(stderr,"document of the wrong type, root node != story");
		xmlFreeDoc(doc);
		return (NULL);
	}
	
	cur = cur-&gt;xmlChildrenNode;
	while (cur != NULL) {
		if ((!xmlStrcmp(cur-&gt;name, (const xmlChar *)"storyinfo"))){
			parseStory (doc, cur, keyword);
		}
		 
	cur = cur-&gt;next;
	}
	return(doc);
}

int
main(int argc, char **argv) {

	char *docname;
	char *keyword;
	xmlDocPtr doc;

	if (argc &lt;= 2) {
		printf("Usage: %s docname, keyword\n", argv[0]);
		return(0);
	}

	docname = argv[1];
	keyword = argv[2];
	doc = parseDoc (docname, keyword);
	if (doc != NULL) {
		xmlSaveFormatFile (docname, doc, 0);
		xmlFreeDoc(doc);
	}
	
	return (1);
}

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