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diff --git a/doc/tutorial/ar01s07.html b/doc/tutorial/ar01s07.html new file mode 100644 index 00000000..7dda324c --- /dev/null +++ b/doc/tutorial/ar01s07.html @@ -0,0 +1,35 @@ +<!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>Retrieving Attributes</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="ar01s06.html" title="Writing Attribute"><link rel="next" href="apa.html" title="A. Sample Document"></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">Retrieving Attributes</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ar01s06.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="apa.html">Next</a></td></tr></table><hr></div><div class="sect1"><div class="titlepage"><div><h2 class="title" style="clear: both"><a name="xmltutorialattribute"></a>Retrieving Attributes</h2></div></div><p>Retrieving the value of an attribute is similar to the previous + example in which we retrieved a node's text contents. In this case we'll + extract the value of the URI we added in the previous + section. Full code: <a href="ape.html" title="E. Code for Retrieving Attribute Value Example">Appendix E</a>.</p><p> + The initial steps for this example are similar to the previous ones: parse + the doc, find the element you are interested in, then enter a function to + carry out the specific task required. In this case, we call + <tt>getReference</tt>: + <pre class="programlisting"> +void +getReference (xmlDocPtr doc, xmlNodePtr cur) { + + cur = cur->xmlChildrenNode; + while (cur != NULL) { + if ((!xmlStrcmp(cur->name, (const xmlChar *)"reference"))) { + <a name="getattributevalue"></a><img src="images/callouts/1.png" alt="1" border="0"> printf("uri: %s\n", xmlGetProp(cur, "uri")); + } + cur = cur->next; + } + return; +} + </pre> + + <div class="calloutlist"><table border="0" summary="Callout list"><tr><td width="5%" valign="top" align="left"><a href="#getattributevalue"><img src="images/callouts/1.png" alt="1" border="0"></a> </td><td valign="top" align="left"><p> + The key function is <tt><a href="http://xmlsoft.org/html/libxml-tree.html#XMLGETPROP" target="_top">xmlGetProp</a></tt>, which returns an + <tt>xmlChar</tt> containing the attribute's value. In this case, + we just print it out. + <div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3><p> + If you are using a DTD that declares a fixed or + default value for the attribute, this function will retrieve it. + </p></div> + </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="ar01s06.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="index.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="apa.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Writing Attribute </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> A. Sample Document</td></tr></table></div></body></html> |