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<?xml version="1.0" encoding="UTF-8"?><html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <title>pattern: pattern expression handling</title> <meta name="generator" content="Libxml2 devhelp stylesheet"/> <link rel="start" href="index.html" title="libxml2 Reference Manual"/> <link rel="up" href="general.html" title="API"/> <link rel="stylesheet" href="style.css" type="text/css"/> <link rel="chapter" href="general.html" title="API"/> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table class="navigation" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"> <tr valign="middle"> <td> <a accesskey="p" href="libxml2-parserInternals.html"> <img src="left.png" width="24" height="24" border="0" alt="Prev"/> </a> </td> <td> <a accesskey="u" href="general.html"> <img src="up.png" width="24" height="24" border="0" alt="Up"/> </a> </td> <td> <a accesskey="h" href="index.html"> <img src="home.png" width="24" height="24" border="0" alt="Home"/> </a> </td> <td> <a accesskey="n" href="libxml2-relaxng.html"> <img src="right.png" width="24" height="24" border="0" alt="Next"/> </a> </td> <th width="100%" align="center">libxml2 Reference Manual</th> </tr> </table> <h2> <span class="refentrytitle">pattern</span> </h2> <p>pattern - pattern expression handling</p> <p>allows to compile and test pattern expressions for nodes either in a tree or based on a parser state. </p> <p>Author(s): Daniel Veillard </p> <div class="refsynopsisdiv"> <h2>Synopsis</h2> <pre class="synopsis">typedef <a href="libxml2-pattern.html#xmlStreamCtxt">xmlStreamCtxt</a> * <a href="#xmlStreamCtxtPtr">xmlStreamCtxtPtr</a>;typedef enum <a href="#xmlPatternFlags">xmlPatternFlags</a>;typedef struct _xmlStreamCtxt <a href="#xmlStreamCtxt">xmlStreamCtxt</a>;typedef struct _xmlPattern <a href="#xmlPattern">xmlPattern</a>;typedef <a href="libxml2-pattern.html#xmlPattern">xmlPattern</a> * <a href="#xmlPatternPtr">xmlPatternPtr</a>;int <a href="#xmlPatternMinDepth">xmlPatternMinDepth</a> (<a href="libxml2-pattern.html#xmlPatternPtr">xmlPatternPtr</a> comp);<a href="libxml2-pattern.html#xmlStreamCtxtPtr">xmlStreamCtxtPtr</a> <a href="#xmlPatternGetStreamCtxt">xmlPatternGetStreamCtxt</a> (<a href="libxml2-pattern.html#xmlPatternPtr">xmlPatternPtr</a> comp);int <a href="#xmlPatternFromRoot">xmlPatternFromRoot</a> (<a href="libxml2-pattern.html#xmlPatternPtr">xmlPatternPtr</a> comp);void <a href="#xmlFreePatternList">xmlFreePatternList</a> (<a href="libxml2-pattern.html#xmlPatternPtr">xmlPatternPtr</a> comp);int <a href="#xmlPatternStreamable">xmlPatternStreamable</a> (<a href="libxml2-pattern.html#xmlPatternPtr">xmlPatternPtr</a> comp);int <a href="#xmlStreamPushAttr">xmlStreamPushAttr</a> (<a href="libxml2-pattern.html#xmlStreamCtxtPtr">xmlStreamCtxtPtr</a> stream, <br/> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * ns);int <a href="#xmlPatternMatch">xmlPatternMatch</a> (<a href="libxml2-pattern.html#xmlPatternPtr">xmlPatternPtr</a> comp, <br/> <a href="libxml2-tree.html#xmlNodePtr">xmlNodePtr</a> node);int <a href="#xmlStreamWantsAnyNode">xmlStreamWantsAnyNode</a> (<a href="libxml2-pattern.html#xmlStreamCtxtPtr">xmlStreamCtxtPtr</a> streamCtxt);int <a href="#xmlStreamPop">xmlStreamPop</a> (<a href="libxml2-pattern.html#xmlStreamCtxtPtr">xmlStreamCtxtPtr</a> stream);void <a href="#xmlFreePattern">xmlFreePattern</a> (<a href="libxml2-pattern.html#xmlPatternPtr">xmlPatternPtr</a> comp);int <a href="#xmlStreamPush">xmlStreamPush</a> (<a href="libxml2-pattern.html#xmlStreamCtxtPtr">xmlStreamCtxtPtr</a> stream, <br/> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * ns);int <a href="#xmlPatternMaxDepth">xmlPatternMaxDepth</a> (<a href="libxml2-pattern.html#xmlPatternPtr">xmlPatternPtr</a> comp);<a href="libxml2-pattern.html#xmlPatternPtr">xmlPatternPtr</a> <a href="#xmlPatterncompile">xmlPatterncompile</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * pattern, <br/> <a href="libxml2-dict.html#xmlDict">xmlDict</a> * dict, <br/> int flags, <br/> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** namespaces);int <a href="#xmlStreamPushNode">xmlStreamPushNode</a> (<a href="libxml2-pattern.html#xmlStreamCtxtPtr">xmlStreamCtxtPtr</a> stream, <br/> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * ns, <br/> int nodeType);void <a href="#xmlFreeStreamCtxt">xmlFreeStreamCtxt</a> (<a href="libxml2-pattern.html#xmlStreamCtxtPtr">xmlStreamCtxtPtr</a> stream);</pre> </div> <div class="refsect1" lang="en"> <h2>Description</h2> </div> <div class="refsect1" lang="en"> <h2>Details</h2> <div class="refsect2" lang="en"> <div class="refsect2" lang="en"><h3><a name="xmlPattern">Structure </a>xmlPattern</h3><pre class="programlisting">struct _xmlPattern {The content of this structure is not made public by the API.} xmlPattern;</pre><p/></div> <hr/> <div class="refsect2" lang="en"><h3><a name="xmlPatternFlags">Enum </a>xmlPatternFlags</h3><pre class="programlisting">enum <a href="#xmlPatternFlags">xmlPatternFlags</a> { <a name="XML_PATTERN_DEFAULT">XML_PATTERN_DEFAULT</a> = 0 /* simple pattern match */ <a name="XML_PATTERN_XPATH">XML_PATTERN_XPATH</a> = 1 /* standard XPath pattern */ <a name="XML_PATTERN_XSSEL">XML_PATTERN_XSSEL</a> = 2 /* XPath subset for schema selector */ <a name="XML_PATTERN_XSFIELD">XML_PATTERN_XSFIELD</a> = 4 /* XPath subset for schema field */⌨️ 快捷键说明
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