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   1 <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>
   2       </p><pre class="programlisting">
   3 #include &lt;stdio.h&gt;
   4 #include &lt;string.h&gt;
   5 #include &lt;stdlib.h&gt;
   6 #include &lt;libxml/xmlmemory.h&gt;
   7 #include &lt;libxml/parser.h&gt;
   8
   9 void
  10 parseStory (xmlDocPtr doc, xmlNodePtr cur, char *keyword) {
  11
  12         xmlNewTextChild (cur, NULL, "keyword", keyword);
  13     return;
  14 }
  15
  16 xmlDocPtr
  17 parseDoc(char *docname, char *keyword) {
  18
  19         xmlDocPtr doc;
  20         xmlNodePtr cur;
  21
  22         doc = xmlParseFile(docname);
  23
  24         if (doc == NULL ) {
  25                 fprintf(stderr,"Document not parsed successfully. \n");
  26                 return (NULL);
  27         }
  28
  29         cur = xmlDocGetRootElement(doc);
  30
  31         if (cur == NULL) {
  32                 fprintf(stderr,"empty document\n");
  33                 xmlFreeDoc(doc);
  34                 return (NULL);
  35         }
  36
  37         if (xmlStrcmp(cur-&gt;name, (const xmlChar *) "story")) {
  38                 fprintf(stderr,"document of the wrong type, root node != story");
  39                 xmlFreeDoc(doc);
  40                 return (NULL);
  41         }
  42
  43         cur = cur-&gt;xmlChildrenNode;
  44         while (cur != NULL) {
  45                 if ((!xmlStrcmp(cur-&gt;name, (const xmlChar *)"storyinfo"))){
  46                         parseStory (doc, cur, keyword);
  47                 }
  48
  49         cur = cur-&gt;next;
  50         }
  51         return(doc);
  52 }
  53
  54 int
  55 main(int argc, char **argv) {
  56
  57         char *docname;
  58         char *keyword;
  59         xmlDocPtr doc;
  60
  61         if (argc &lt;= 2) {
  62                 printf("Usage: %s docname, keyword\n", argv[0]);
  63                 return(0);
  64         }
  65
  66         docname = argv[1];
  67         keyword = argv[2];
  68         doc = parseDoc (docname, keyword);
  69         if (doc != NULL) {
  70                 xmlSaveFormatFile (docname, doc, 0);
  71                 xmlFreeDoc(doc);
  72         }
  73
  74         return (1);
  75 }
  76
  77 </pre><p>
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