Alessandro Bonazzi
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113 lines
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<th width="100%" align="center">libxslt Reference Manual</th>
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<h2>
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<span class="refentrytitle">functions</span>
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</h2>
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<p>functions - interface for the XSLT functions not from XPath</p>
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<p>a set of extra functions coming from XSLT but not in XPath </p>
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<p>Author(s): Daniel Veillard and Bjorn Reese <breese@users.sourceforge.net> </p>
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<div class="refsynopsisdiv">
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<h2>Synopsis</h2>
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<pre class="synopsis">#define <a href="#XSLT_REGISTER_FUNCTION_LOOKUP">XSLT_REGISTER_FUNCTION_LOOKUP</a>;
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void <a href="#xsltDocumentFunction">xsltDocumentFunction</a> (xmlXPathParserContextPtr ctxt, <br/> int nargs);
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void <a href="#xsltElementAvailableFunction">xsltElementAvailableFunction</a> (xmlXPathParserContextPtr ctxt, <br/> int nargs);
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void <a href="#xsltFormatNumberFunction">xsltFormatNumberFunction</a> (xmlXPathParserContextPtr ctxt, <br/> int nargs);
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void <a href="#xsltFunctionAvailableFunction">xsltFunctionAvailableFunction</a> (xmlXPathParserContextPtr ctxt, <br/> int nargs);
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void <a href="#xsltGenerateIdFunction">xsltGenerateIdFunction</a> (xmlXPathParserContextPtr ctxt, <br/> int nargs);
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void <a href="#xsltKeyFunction">xsltKeyFunction</a> (xmlXPathParserContextPtr ctxt, <br/> int nargs);
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void <a href="#xsltRegisterAllFunctions">xsltRegisterAllFunctions</a> (xmlXPathContextPtr ctxt);
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void <a href="#xsltSystemPropertyFunction">xsltSystemPropertyFunction</a> (xmlXPathParserContextPtr ctxt, <br/> int nargs);
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void <a href="#xsltUnparsedEntityURIFunction">xsltUnparsedEntityURIFunction</a> (xmlXPathParserContextPtr ctxt, <br/> int nargs);
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xmlXPathFunction <a href="#xsltXPathFunctionLookup">xsltXPathFunctionLookup</a> (void * vctxt, <br/> const xmlChar * name, <br/> const xmlChar * ns_uri);
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</pre>
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</div>
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<div class="refsect1" lang="en">
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<h2>Description</h2>
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</div>
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<div class="refsect1" lang="en">
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<h2>Details</h2>
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<div class="refsect2" lang="en">
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<div class="refsect2" lang="en"><h3><a name="XSLT_REGISTER_FUNCTION_LOOKUP">Macro </a>XSLT_REGISTER_FUNCTION_LOOKUP</h3><pre class="programlisting">#define <a href="#XSLT_REGISTER_FUNCTION_LOOKUP">XSLT_REGISTER_FUNCTION_LOOKUP</a>;
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</pre><p>Registering macro, not general purpose at all but used in different modules.</p>
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</div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltDocumentFunction"/>xsltDocumentFunction ()</h3><pre class="programlisting">void xsltDocumentFunction (xmlXPathParserContextPtr ctxt, <br/> int nargs)<br/>
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</pre><p>Implement the document() XSLT function node-set document(object, node-set?)</p>
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<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltElementAvailableFunction"/>xsltElementAvailableFunction ()</h3><pre class="programlisting">void xsltElementAvailableFunction (xmlXPathParserContextPtr ctxt, <br/> int nargs)<br/>
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</pre><p>Implement the element-available() XSLT function boolean element-available(string)</p>
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<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltFormatNumberFunction"/>xsltFormatNumberFunction ()</h3><pre class="programlisting">void xsltFormatNumberFunction (xmlXPathParserContextPtr ctxt, <br/> int nargs)<br/>
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</pre><p>Implement the format-number() XSLT function string format-number(number, string, string?)</p>
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<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltFunctionAvailableFunction"/>xsltFunctionAvailableFunction ()</h3><pre class="programlisting">void xsltFunctionAvailableFunction (xmlXPathParserContextPtr ctxt, <br/> int nargs)<br/>
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</pre><p>Implement the function-available() XSLT function boolean function-available(string)</p>
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<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltGenerateIdFunction"/>xsltGenerateIdFunction ()</h3><pre class="programlisting">void xsltGenerateIdFunction (xmlXPathParserContextPtr ctxt, <br/> int nargs)<br/>
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</pre><p>Implement the generate-id() XSLT function string generate-id(node-set?)</p>
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<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltKeyFunction"/>xsltKeyFunction ()</h3><pre class="programlisting">void xsltKeyFunction (xmlXPathParserContextPtr ctxt, <br/> int nargs)<br/>
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</pre><p>Implement the key() XSLT function node-set key(string, object)</p>
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<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltRegisterAllFunctions"/>xsltRegisterAllFunctions ()</h3><pre class="programlisting">void xsltRegisterAllFunctions (xmlXPathContextPtr ctxt)<br/>
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</pre><p>Registers all default XSLT functions in this context</p>
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<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath context</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltSystemPropertyFunction"/>xsltSystemPropertyFunction ()</h3><pre class="programlisting">void xsltSystemPropertyFunction (xmlXPathParserContextPtr ctxt, <br/> int nargs)<br/>
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</pre><p>Implement the system-property() XSLT function object system-property(string)</p>
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<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltUnparsedEntityURIFunction"/>xsltUnparsedEntityURIFunction ()</h3><pre class="programlisting">void xsltUnparsedEntityURIFunction (xmlXPathParserContextPtr ctxt, <br/> int nargs)<br/>
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</pre><p>Implement the unparsed-entity-uri() XSLT function string unparsed-entity-uri(string)</p>
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<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltXPathFunctionLookup"/>xsltXPathFunctionLookup ()</h3><pre class="programlisting">xmlXPathFunction xsltXPathFunctionLookup (void * vctxt, <br/> const xmlChar * name, <br/> const xmlChar * ns_uri)<br/>
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</pre><p>This is the entry point when a function is needed by the XPath interpretor.</p>
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<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>vctxt</tt></i>:</span></td><td>a void * but the XSLT transformation context actually</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the function name</td></tr><tr><td><span class="term"><i><tt>ns_uri</tt></i>:</span></td><td>the function namespace URI</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the callback function or NULL if not found</td></tr></tbody></table></div></div>
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