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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Writing element content</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="ar01s05.html" title="Using XPath to Retrieve Element Content"><link rel="next" href="ar01s07.html" title="Writing Attribute"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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Writing element content uses many of the same steps we used above
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— parsing the document and walking the tree. We parse the document,
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then traverse the tree to find the place we want to insert our element. For
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this example, we want to again find the "storyinfo" element and
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this time insert a keyword. Then we'll write the file to disk. Full code:
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Appendix E, Code for Add Keyword Example
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The main difference in this example is in
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<tt class="function">parseStory</tt>:
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void
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parseStory (xmlDocPtr doc, xmlNodePtr cur, char *keyword) {
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 xmlNewTextChild (cur, NULL, "keyword", keyword);
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return;
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}
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function adds a new child element at the
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current node pointer's location in the
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tree, specified by <tt class="varname">cur</tt>.
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Once the node has been added, we would like to write the document to
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file. Is you want the element to have a namespace, you can add it here as
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well. In our case, the namespace is NULL.
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xmlSaveFormatFile (docname, doc, 1);
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The first parameter is the name of the file to be written. You'll notice
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it is the same as the file we just read. In this case, we just write over
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the old file. The second parameter is a pointer to the xmlDoc
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structure. Setting the third parameter equal to one ensures indenting on output.
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</body></html>
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