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<title>pattern: interface for the pattern matching used in template matches.</title>
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<span class="refentrytitle">pattern</span>
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<p>pattern - interface for the pattern matching used in template matches.</p>
<p>the implementation of the lookup of the right template for a given node must be really fast in order to keep decent performances. </p>
<p>Author(s): Daniel Veillard </p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">typedef struct _xsltCompMatch <a href="#xsltCompMatch">xsltCompMatch</a>;
typedef <a href="libxslt-pattern.html#xsltCompMatch">xsltCompMatch</a> * <a href="#xsltCompMatchPtr">xsltCompMatchPtr</a>;
void <a href="#xsltNormalizeCompSteps">xsltNormalizeCompSteps</a> (void * payload, <br/> void * data, <br/> const xmlChar * name);
int <a href="#xsltAddTemplate">xsltAddTemplate</a> (<a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style, <br/> <a href="libxslt-xsltInternals.html#xsltTemplatePtr">xsltTemplatePtr</a> cur, <br/> const xmlChar * mode, <br/> const xmlChar * modeURI);
<a href="libxslt-pattern.html#xsltCompMatchPtr">xsltCompMatchPtr</a> <a href="#xsltCompilePattern">xsltCompilePattern</a> (const xmlChar * pattern, <br/> xmlDocPtr doc, <br/> xmlNodePtr node, <br/> <a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style, <br/> <a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> runtime);
int <a href="#xsltMatchPattern">xsltMatchPattern</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr node, <br/> const xmlChar * pattern, <br/> xmlDocPtr ctxtdoc, <br/> xmlNodePtr ctxtnode);
<a href="libxslt-xsltInternals.html#xsltTemplatePtr">xsltTemplatePtr</a> <a href="#xsltGetTemplate">xsltGetTemplate</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr node, <br/> <a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style);
void <a href="#xsltCompMatchClearCache">xsltCompMatchClearCache</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> <a href="libxslt-pattern.html#xsltCompMatchPtr">xsltCompMatchPtr</a> comp);
int <a href="#xsltTestCompMatchList">xsltTestCompMatchList</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr node, <br/> <a href="libxslt-pattern.html#xsltCompMatchPtr">xsltCompMatchPtr</a> comp);
void <a href="#xsltFreeCompMatchList">xsltFreeCompMatchList</a> (<a href="libxslt-pattern.html#xsltCompMatchPtr">xsltCompMatchPtr</a> comp);
void <a href="#xsltFreeTemplateHashes">xsltFreeTemplateHashes</a> (<a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style);
void <a href="#xsltCleanupTemplates">xsltCleanupTemplates</a> (<a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style);
</pre>
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<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="xsltCompMatch">Structure </a>xsltCompMatch</h3><pre class="programlisting">struct _xsltCompMatch {
The content of this structure is not made public by the API.
} xsltCompMatch;
</pre><p/>
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<div class="refsect2" lang="en"><h3><a name="xsltCompMatchPtr">Typedef </a>xsltCompMatchPtr</h3><pre class="programlisting"><a href="libxslt-pattern.html#xsltCompMatch">xsltCompMatch</a> * xsltCompMatchPtr;
</pre><p/>
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<div class="refsect2" lang="en"><h3><a name="xsltAddTemplate"/>xsltAddTemplate ()</h3><pre class="programlisting">int xsltAddTemplate (<a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style, <br/> <a href="libxslt-xsltInternals.html#xsltTemplatePtr">xsltTemplatePtr</a> cur, <br/> const xmlChar * mode, <br/> const xmlChar * modeURI)<br/>
</pre><p>Register the XSLT pattern associated to @cur</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>style</tt></i>:</span></td><td>an XSLT stylesheet</td></tr><tr><td><span class="term"><i><tt>cur</tt></i>:</span></td><td>an XSLT template</td></tr><tr><td><span class="term"><i><tt>mode</tt></i>:</span></td><td>the mode name or NULL</td></tr><tr><td><span class="term"><i><tt>modeURI</tt></i>:</span></td><td>the mode URI or NULL</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 otherwise</td></tr></tbody></table></div></div>
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<div class="refsect2" lang="en"><h3><a name="xsltCleanupTemplates"/>xsltCleanupTemplates ()</h3><pre class="programlisting">void xsltCleanupTemplates (<a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style)<br/>
</pre><p>Cleanup the state of the templates used by the stylesheet and the ones it imports.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>style</tt></i>:</span></td><td>an XSLT stylesheet</td></tr></tbody></table></div></div>
<hr/>
<div class="refsect2" lang="en"><h3><a name="xsltCompMatchClearCache"/>xsltCompMatchClearCache ()</h3><pre class="programlisting">void xsltCompMatchClearCache (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> <a href="libxslt-pattern.html#xsltCompMatchPtr">xsltCompMatchPtr</a> comp)<br/>
</pre><p>Clear pattern match cache.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>a XSLT process context</td></tr><tr><td><span class="term"><i><tt>comp</tt></i>:</span></td><td>the precompiled pattern list</td></tr></tbody></table></div></div>
<hr/>
<div class="refsect2" lang="en"><h3><a name="xsltCompilePattern"/>xsltCompilePattern ()</h3><pre class="programlisting"><a href="libxslt-pattern.html#xsltCompMatchPtr">xsltCompMatchPtr</a> xsltCompilePattern (const xmlChar * pattern, <br/> xmlDocPtr doc, <br/> xmlNodePtr node, <br/> <a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style, <br/> <a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> runtime)<br/>
</pre><p>Compile the XSLT pattern and generates a list of precompiled form suitable for fast matching. [1] Pattern ::= LocationPathPattern | Pattern '|' LocationPathPattern</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>pattern</tt></i>:</span></td><td>an XSLT pattern</td></tr><tr><td><span class="term"><i><tt>doc</tt></i>:</span></td><td>the containing document</td></tr><tr><td><span class="term"><i><tt>node</tt></i>:</span></td><td>the containing element</td></tr><tr><td><span class="term"><i><tt>style</tt></i>:</span></td><td>the stylesheet</td></tr><tr><td><span class="term"><i><tt>runtime</tt></i>:</span></td><td>the transformation context, if done at run-time</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the generated pattern list or NULL in case of failure</td></tr></tbody></table></div></div>
<hr/>
<div class="refsect2" lang="en"><h3><a name="xsltFreeCompMatchList"/>xsltFreeCompMatchList ()</h3><pre class="programlisting">void xsltFreeCompMatchList (<a href="libxslt-pattern.html#xsltCompMatchPtr">xsltCompMatchPtr</a> comp)<br/>
</pre><p>Free up the memory allocated by all the elements of @comp</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>comp</tt></i>:</span></td><td>an XSLT comp list</td></tr></tbody></table></div></div>
<hr/>
<div class="refsect2" lang="en"><h3><a name="xsltFreeTemplateHashes"/>xsltFreeTemplateHashes ()</h3><pre class="programlisting">void xsltFreeTemplateHashes (<a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style)<br/>
</pre><p>Free up the memory used by xsltAddTemplate/xsltGetTemplate mechanism</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>style</tt></i>:</span></td><td>an XSLT stylesheet</td></tr></tbody></table></div></div>
<hr/>
<div class="refsect2" lang="en"><h3><a name="xsltGetTemplate"/>xsltGetTemplate ()</h3><pre class="programlisting"><a href="libxslt-xsltInternals.html#xsltTemplatePtr">xsltTemplatePtr</a> xsltGetTemplate (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr node, <br/> <a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style)<br/>
</pre><p>Finds the template applying to this node, if @style is non-NULL it means one needs to look for the next imported template in scope.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>a XSLT process context</td></tr><tr><td><span class="term"><i><tt>node</tt></i>:</span></td><td>the node being processed</td></tr><tr><td><span class="term"><i><tt>style</tt></i>:</span></td><td>the current style</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxslt-xsltInternals.html#xsltTemplatePtr">xsltTemplatePtr</a> or NULL if not found</td></tr></tbody></table></div></div>
<hr/>
<div class="refsect2" lang="en"><h3><a name="xsltMatchPattern"/>xsltMatchPattern ()</h3><pre class="programlisting">int xsltMatchPattern (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr node, <br/> const xmlChar * pattern, <br/> xmlDocPtr ctxtdoc, <br/> xmlNodePtr ctxtnode)<br/>
</pre><p/>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td/></tr><tr><td><span class="term"><i><tt>node</tt></i>:</span></td><td/></tr><tr><td><span class="term"><i><tt>pattern</tt></i>:</span></td><td/></tr><tr><td><span class="term"><i><tt>ctxtdoc</tt></i>:</span></td><td/></tr><tr><td><span class="term"><i><tt>ctxtnode</tt></i>:</span></td><td/></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td/></tr></tbody></table></div></div>
<hr/>
<div class="refsect2" lang="en"><h3><a name="xsltNormalizeCompSteps"/>xsltNormalizeCompSteps ()</h3><pre class="programlisting">void xsltNormalizeCompSteps (void * payload, <br/> void * data, <br/> const xmlChar * name)<br/>
</pre><p>This is a hashtable scanner function to normalize the compiled steps of an imported stylesheet.</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>payload</tt></i>:</span></td><td>pointer to template hash table entry</td></tr><tr><td><span class="term"><i><tt>data</tt></i>:</span></td><td>pointer to the stylesheet</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>template match name</td></tr></tbody></table></div></div>
<hr/>
<div class="refsect2" lang="en"><h3><a name="xsltTestCompMatchList"/>xsltTestCompMatchList ()</h3><pre class="programlisting">int xsltTestCompMatchList (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr node, <br/> <a href="libxslt-pattern.html#xsltCompMatchPtr">xsltCompMatchPtr</a> comp)<br/>
</pre><p>Test whether the node matches one of the patterns in the list</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>a XSLT process context</td></tr><tr><td><span class="term"><i><tt>node</tt></i>:</span></td><td>a node</td></tr><tr><td><span class="term"><i><tt>comp</tt></i>:</span></td><td>the precompiled pattern list</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>1 if it matches, 0 if it doesn't and -1 in case of failure</td></tr></tbody></table></div></div>
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