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apa.html apb.html apc.html apd.html ar01s02.html ar01s03.html ar01s04.html

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Tue Jun  4 09:09:18 MDT 2002 John Fleck <jfleck@inkstain.net>

	* added doc/tutorial, including:
	apa.html
	apb.html
	apc.html
	apd.html
	ar01s02.html
	ar01s03.html
	ar01s04.html
	ar01s05.html
	ar01s06.html
	includeaddattribute.c
	includeaddkeyword.c
	includekeyword.c
	includestory.xml
	index.html
	xmltutorial.xml
	libxml tutorial, including generated html
This commit is contained in:
MDT 2002 John Fleck
2002-06-04 15:10:36 +00:00
committed by John Fleck
parent 6f4e5e7697
commit 598f6ebb94
16 changed files with 1027 additions and 0 deletions
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html><head><meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"><title>Parsing the file</title><meta name="generator" content="DocBook XSL Stylesheets V1.48"><link rel="home" href="index.html" title="Libxml Tutorial"><link rel="up" href="index.html" title="Libxml Tutorial"><link rel="previous" href="ar01s02.html" title="Data Types"><link rel="next" href="ar01s04.html" title="Retrieving Element Content"></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">Parsing the file</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ar01s02.html">Prev</a><EFBFBD></td><th width="60%" align="center"><EFBFBD></th><td width="20%" align="right"><EFBFBD><a accesskey="n" href="ar01s04.html">Next</a></td></tr></table><hr></div><div class="sect1"><div class="titlepage"><div><h2 class="title" style="clear: both"><a name="xmltutorialparsing"></a>Parsing the file</h2></div></div><p>Parsing the file requires only the name of the file and a single
function call, plus error checking. Full code: <a href="apb.html" title="B. Code for Keyword Example">Appendix B</a></p><p>
<pre class="programlisting">
<a name="declaredoc"></a><img src="images/callouts/1.png" alt="1" border="0"> xmlDocPtr doc;
<a name="declarenode"></a><img src="images/callouts/2.png" alt="2" border="0"> xmlNodePtr cur;
<a name="parsefile"></a><img src="images/callouts/3.png" alt="3" border="0"> doc = xmlParseFile(docname);
<a name="checkparseerror"></a><img src="images/callouts/4.png" alt="4" border="0"> if (doc == NULL ) {
fprintf(stderr,&quot;Document not parsed successfully. \n&quot;);
return;
}
<a name="getrootelement"></a><img src="images/callouts/5.png" alt="5" border="0"> cur = xmlDocGetRootElement(doc);
<a name="checkemptyerror"></a><img src="images/callouts/6.png" alt="6" border="0"> if (cur == NULL) {
fprintf(stderr,&quot;empty document\n&quot;);
xmlFreeDoc(doc);
return;
}
<a name="checkroottype"></a><img src="images/callouts/7.png" alt="7" border="0"> if (xmlStrcmp(cur-&gt;name, (const xmlChar *) &quot;story&quot;)) {
fprintf(stderr,&quot;document of the wrong type, root node != story&quot;);
xmlFreeDoc(doc);
return;
}
</pre>
<div class="calloutlist"><table border="0" summary="Callout list"><tr><td width="5%" valign="top" align="left"><a href="#declaredoc"><img src="images/callouts/1.png" alt="1" border="0"></a> </td><td valign="top" align="left"><p>Declare the pointer that will point to your parsed document.</p></td></tr><tr><td width="5%" valign="top" align="left"><a href="#declarenode"><img src="images/callouts/2.png" alt="2" border="0"></a> </td><td valign="top" align="left"><p>Declare a node pointer (you'll need this in order to
interact with individual nodes).</p></td></tr><tr><td width="5%" valign="top" align="left"><a href="#checkparseerror"><img src="images/callouts/4.png" alt="4" border="0"></a> </td><td valign="top" align="left"><p>Check to see that the document was successfully parsed.</p></td></tr><tr><td width="5%" valign="top" align="left"><a href="#getrootelement"><img src="images/callouts/5.png" alt="5" border="0"></a> </td><td valign="top" align="left"><p>Retrieve the document's root element.</p></td></tr><tr><td width="5%" valign="top" align="left"><a href="#checkemptyerror"><img src="images/callouts/6.png" alt="6" border="0"></a> </td><td valign="top" align="left"><p>Check to make sure the document actually contains something.</p></td></tr><tr><td width="5%" valign="top" align="left"><a href="#checkroottype"><img src="images/callouts/7.png" alt="7" border="0"></a> </td><td valign="top" align="left"><p>In our case, we need to make sure the document is the right
type. &quot;story&quot; is the root type of my documents.</p></td></tr></table></div>
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ar01s02.html">Prev</a><EFBFBD></td><td width="20%" align="center"><a accesskey="u" href="index.html">Up</a></td><td width="40%" align="right"><EFBFBD><a accesskey="n" href="ar01s04.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Data Types<65></td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"><EFBFBD>Retrieving Element Content</td></tr></table></div></body></html>