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<span class="refentrytitle">templates</span>
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<p>templates - interface for the template processing</p>
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<p>This set of routine encapsulates XPath calls and Attribute Value Templates evaluation. </p>
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<p>Author(s): Daniel Veillard </p>
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<div class="refsynopsisdiv">
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<h2>Synopsis</h2>
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<pre class="synopsis">const xmlChar * <a href="#xsltEvalStaticAttrValueTemplate">xsltEvalStaticAttrValueTemplate</a> (<a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style, <br/> xmlNodePtr inst, <br/> const xmlChar * name, <br/> const xmlChar * ns, <br/> int * found);
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xmlAttrPtr <a href="#xsltAttrListTemplateProcess">xsltAttrListTemplateProcess</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr target, <br/> xmlAttrPtr attrs);
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xmlChar * <a href="#xsltEvalTemplateString">xsltEvalTemplateString</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr contextNode, <br/> xmlNodePtr inst);
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xmlChar * <a href="#xsltAttrTemplateValueProcess">xsltAttrTemplateValueProcess</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> const xmlChar * str);
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xmlAttrPtr <a href="#xsltAttrTemplateProcess">xsltAttrTemplateProcess</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr target, <br/> xmlAttrPtr attr);
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xmlChar * <a href="#xsltEvalAttrValueTemplate">xsltEvalAttrValueTemplate</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr inst, <br/> const xmlChar * name, <br/> const xmlChar * ns);
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int <a href="#xsltEvalXPathPredicate">xsltEvalXPathPredicate</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlXPathCompExprPtr comp, <br/> xmlNsPtr * nsList, <br/> int nsNr);
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xmlChar * <a href="#xsltAttrTemplateValueProcessNode">xsltAttrTemplateValueProcessNode</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> const xmlChar * str, <br/> xmlNodePtr inst);
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xmlNodePtr * <a href="#xsltTemplateProcess">xsltTemplateProcess</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr node);
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xmlChar * <a href="#xsltEvalXPathStringNs">xsltEvalXPathStringNs</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlXPathCompExprPtr comp, <br/> int nsNr, <br/> xmlNsPtr * nsList);
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xmlChar * <a href="#xsltEvalXPathString">xsltEvalXPathString</a> (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlXPathCompExprPtr comp);
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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="xsltAttrListTemplateProcess"/>xsltAttrListTemplateProcess ()</h3><pre class="programlisting">xmlAttrPtr xsltAttrListTemplateProcess (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr target, <br/> xmlAttrPtr attrs)<br/>
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</pre><p>Processes all attributes of a Literal Result Element. Attribute references are applied via xsl:use-attribute-set attributes. Copies all non XSLT-attributes over to the @target element and evaluates Attribute Value Templates. Called by xsltApplySequenceConstructor() (transform.c).</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 XSLT transformation context</td></tr><tr><td><span class="term"><i><tt>target</tt></i>:</span></td><td>the element where the attributes will be grafted</td></tr><tr><td><span class="term"><i><tt>attrs</tt></i>:</span></td><td>the first attribute</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a new list of attribute nodes, or NULL in case of error. (Don't assign the result to @target->properties; if the result is NULL, you'll get memory leaks, since the attributes will be disattached.)</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltAttrTemplateProcess"/>xsltAttrTemplateProcess ()</h3><pre class="programlisting">xmlAttrPtr xsltAttrTemplateProcess (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr target, <br/> xmlAttrPtr attr)<br/>
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</pre><p>Process one attribute of a Literal Result Element (in the stylesheet). Evaluates Attribute Value Templates and copies the attribute over to the result element. This does *not* process attribute sets (xsl:use-attribute-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 XSLT transformation context</td></tr><tr><td><span class="term"><i><tt>target</tt></i>:</span></td><td>the element where the attribute will be grafted</td></tr><tr><td><span class="term"><i><tt>attr</tt></i>:</span></td><td>the attribute node of a literal result element</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the generated attribute node.</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltAttrTemplateValueProcess"/>xsltAttrTemplateValueProcess ()</h3><pre class="programlisting">xmlChar * xsltAttrTemplateValueProcess (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> const xmlChar * str)<br/>
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</pre><p>Process the given node and return the new string value.</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 XSLT transformation context</td></tr><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the attribute template node value</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the computed string value or NULL, must be deallocated by the caller.</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltAttrTemplateValueProcessNode"/>xsltAttrTemplateValueProcessNode ()</h3><pre class="programlisting">xmlChar * xsltAttrTemplateValueProcessNode (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> const xmlChar * str, <br/> xmlNodePtr inst)<br/>
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</pre><p>Process the given string, allowing to pass a namespace mapping context and return the new string value. Called by: - xsltAttrTemplateValueProcess() (templates.c) - xsltEvalAttrValueTemplate() (templates.c) QUESTION: Why is this function public? It is not used outside of templates.c.</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 XSLT transformation context</td></tr><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the attribute template node value</td></tr><tr><td><span class="term"><i><tt>inst</tt></i>:</span></td><td>the instruction (or LRE) in the stylesheet holding the attribute with an AVT</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the computed string value or NULL, must be deallocated by the caller.</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltEvalAttrValueTemplate"/>xsltEvalAttrValueTemplate ()</h3><pre class="programlisting">xmlChar * xsltEvalAttrValueTemplate (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr inst, <br/> const xmlChar * name, <br/> const xmlChar * ns)<br/>
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</pre><p>Evaluate a attribute value template, i.e. the attribute value can contain expressions contained in curly braces ({}) and those are substituted by they computed value.</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 XSLT transformation context</td></tr><tr><td><span class="term"><i><tt>inst</tt></i>:</span></td><td>the instruction (or LRE) in the stylesheet holding the attribute with an AVT</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the attribute QName</td></tr><tr><td><span class="term"><i><tt>ns</tt></i>:</span></td><td>the attribute namespace URI</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the computed string value or NULL, must be deallocated by the caller.</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltEvalStaticAttrValueTemplate"/>xsltEvalStaticAttrValueTemplate ()</h3><pre class="programlisting">const xmlChar * xsltEvalStaticAttrValueTemplate (<a href="libxslt-xsltInternals.html#xsltStylesheetPtr">xsltStylesheetPtr</a> style, <br/> xmlNodePtr inst, <br/> const xmlChar * name, <br/> const xmlChar * ns, <br/> int * found)<br/>
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</pre><p>Check if an attribute value template has a static value, i.e. the attribute value does not contain expressions contained in curly braces ({})</p>
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<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>style</tt></i>:</span></td><td>the XSLT stylesheet</td></tr><tr><td><span class="term"><i><tt>inst</tt></i>:</span></td><td>the instruction (or LRE) in the stylesheet holding the attribute with an AVT</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the attribute Name</td></tr><tr><td><span class="term"><i><tt>ns</tt></i>:</span></td><td>the attribute namespace URI</td></tr><tr><td><span class="term"><i><tt>found</tt></i>:</span></td><td>indicator whether the attribute is present</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the static string value or NULL, must be deallocated by the caller.</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltEvalTemplateString"/>xsltEvalTemplateString ()</h3><pre class="programlisting">xmlChar * xsltEvalTemplateString (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr contextNode, <br/> xmlNodePtr inst)<br/>
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</pre><p>Processes the sequence constructor of the given instruction on @contextNode and converts the resulting tree to a string. This is needed by e.g. xsl:comment and xsl:processing-instruction.</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 XSLT transformation context</td></tr><tr><td><span class="term"><i><tt>contextNode</tt></i>:</span></td><td>the current node in the source tree</td></tr><tr><td><span class="term"><i><tt>inst</tt></i>:</span></td><td>the XSLT instruction (xsl:comment, xsl:processing-instruction)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the computed string value or NULL; it's up to the caller to free the result.</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltEvalXPathPredicate"/>xsltEvalXPathPredicate ()</h3><pre class="programlisting">int xsltEvalXPathPredicate (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlXPathCompExprPtr comp, <br/> xmlNsPtr * nsList, <br/> int nsNr)<br/>
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</pre><p>Process the expression using XPath and evaluate the result as an XPath predicate</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 XSLT transformation context</td></tr><tr><td><span class="term"><i><tt>comp</tt></i>:</span></td><td>the XPath compiled expression</td></tr><tr><td><span class="term"><i><tt>nsList</tt></i>:</span></td><td>the namespaces in scope</td></tr><tr><td><span class="term"><i><tt>nsNr</tt></i>:</span></td><td>the number of namespaces in scope</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>1 is the predicate was true, 0 otherwise</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltEvalXPathString"/>xsltEvalXPathString ()</h3><pre class="programlisting">xmlChar * xsltEvalXPathString (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlXPathCompExprPtr comp)<br/>
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</pre><p>Process the expression using XPath and get a 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 XSLT transformation context</td></tr><tr><td><span class="term"><i><tt>comp</tt></i>:</span></td><td>the compiled XPath expression</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the computed string value or NULL, must be deallocated by the caller.</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltEvalXPathStringNs"/>xsltEvalXPathStringNs ()</h3><pre class="programlisting">xmlChar * xsltEvalXPathStringNs (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlXPathCompExprPtr comp, <br/> int nsNr, <br/> xmlNsPtr * nsList)<br/>
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</pre><p>Process the expression using XPath, allowing to pass a namespace mapping context and get a 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 XSLT transformation context</td></tr><tr><td><span class="term"><i><tt>comp</tt></i>:</span></td><td>the compiled XPath expression</td></tr><tr><td><span class="term"><i><tt>nsNr</tt></i>:</span></td><td>the number of namespaces in the list</td></tr><tr><td><span class="term"><i><tt>nsList</tt></i>:</span></td><td>the list of in-scope namespaces to use</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the computed string value or NULL, must be deallocated by the caller.</td></tr></tbody></table></div></div>
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<hr/>
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<div class="refsect2" lang="en"><h3><a name="xsltTemplateProcess"/>xsltTemplateProcess ()</h3><pre class="programlisting">xmlNodePtr * xsltTemplateProcess (<a href="libxslt-xsltInternals.html#xsltTransformContextPtr">xsltTransformContextPtr</a> ctxt, <br/> xmlNodePtr node)<br/>
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</pre><p>Obsolete. Don't use it.</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 XSLT transformation context</td></tr><tr><td><span class="term"><i><tt>node</tt></i>:</span></td><td>the attribute template node</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL.</td></tr></tbody></table></div></div>
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