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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Parsing the file</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="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">
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Parsing the file requires only the name of the file and a single
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function call, plus error checking. Full code: Appendix C, Code for Keyword Example
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 xmlDocPtr doc;
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 xmlNodePtr cur;
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 doc = xmlParseFile(docname);
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 if (doc == NULL ) {
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fprintf(stderr,"Document not parsed successfully. \n");
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return;
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}
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 cur = xmlDocGetRootElement(doc);
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 if (cur == NULL) {
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fprintf(stderr,"empty document\n");
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xmlFreeDoc(doc);
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return;
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}
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 if (xmlStrcmp(cur->name, (const xmlChar *) "story")) {
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fprintf(stderr,"document of the wrong type, root node != story");
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xmlFreeDoc(doc);
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return;
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}
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| | Declare the pointer that will point to your parsed document. | | | Declare a node pointer (you'll need this in order to |
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interact with individual nodes). Check to see that the document was successfully parsed. If it
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was not, libxml will at this point
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register an error and stop.
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![[Note]](images/note.png) | Note |
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One common example of an error at this point is improper
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handling of encoding. The XML standard requires
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documents stored with an encoding other than UTF-8 or UTF-16 to
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contain an explicit declaration of their encoding. If the
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declaration is there, libxml will
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automatically perform the necessary conversion to UTF-8 for
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you. More information on XML's encoding
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requirements is contained in the standard.
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Retrieve the document's root element. Check to make sure the document actually contains something. In our case, we need to make sure the document is the right
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type. "story" is the root type of the documents used in this
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tutorial.
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</body></html>
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