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| <FONT color="green">001</FONT> /*<a name="line.1"></a> |
| <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a> |
| <FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the "License");<a name="line.6"></a> |
| <FONT color="green">007</FONT> * you may not use this file except in compliance with the License.<a name="line.7"></a> |
| <FONT color="green">008</FONT> * You may obtain a copy of the License at<a name="line.8"></a> |
| <FONT color="green">009</FONT> *<a name="line.9"></a> |
| <FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <FONT color="green">011</FONT> *<a name="line.11"></a> |
| <FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <FONT color="green">013</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <FONT color="green">014</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <FONT color="green">015</FONT> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <FONT color="green">016</FONT> * limitations under the License.<a name="line.16"></a> |
| <FONT color="green">017</FONT> */<a name="line.17"></a> |
| <FONT color="green">018</FONT> /*<a name="line.18"></a> |
| <FONT color="green">019</FONT> * $Id: ElemExsltFunction.java 468643 2006-10-28 06:56:03Z minchau $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> package org.apache.xalan.templates;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <a name="line.22"></a> |
| <FONT color="green">023</FONT> import javax.xml.transform.TransformerException;<a name="line.23"></a> |
| <FONT color="green">024</FONT> <a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.xalan.extensions.ExtensionNamespaceSupport;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.xalan.transformer.TransformerImpl;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.xpath.VariableStack;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.xpath.XPathContext;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.xpath.objects.XObject;<a name="line.29"></a> |
| <FONT color="green">030</FONT> <a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.w3c.dom.Node;<a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.w3c.dom.NodeList;<a name="line.32"></a> |
| <FONT color="green">033</FONT> <a name="line.33"></a> |
| <FONT color="green">034</FONT> <a name="line.34"></a> |
| <FONT color="green">035</FONT> /**<a name="line.35"></a> |
| <FONT color="green">036</FONT> * Implement func:function.<a name="line.36"></a> |
| <FONT color="green">037</FONT> * @xsl.usage advanced<a name="line.37"></a> |
| <FONT color="green">038</FONT> */<a name="line.38"></a> |
| <FONT color="green">039</FONT> public class ElemExsltFunction extends ElemTemplate<a name="line.39"></a> |
| <FONT color="green">040</FONT> {<a name="line.40"></a> |
| <FONT color="green">041</FONT> static final long serialVersionUID = 272154954793534771L;<a name="line.41"></a> |
| <FONT color="green">042</FONT> /**<a name="line.42"></a> |
| <FONT color="green">043</FONT> * Get an integer representation of the element type.<a name="line.43"></a> |
| <FONT color="green">044</FONT> *<a name="line.44"></a> |
| <FONT color="green">045</FONT> * @return An integer representation of the element, defined in the<a name="line.45"></a> |
| <FONT color="green">046</FONT> * Constants class.<a name="line.46"></a> |
| <FONT color="green">047</FONT> * @see org.apache.xalan.templates.Constants<a name="line.47"></a> |
| <FONT color="green">048</FONT> */<a name="line.48"></a> |
| <FONT color="green">049</FONT> public int getXSLToken()<a name="line.49"></a> |
| <FONT color="green">050</FONT> {<a name="line.50"></a> |
| <FONT color="green">051</FONT> return Constants.EXSLT_ELEMNAME_FUNCTION;<a name="line.51"></a> |
| <FONT color="green">052</FONT> }<a name="line.52"></a> |
| <FONT color="green">053</FONT> <a name="line.53"></a> |
| <FONT color="green">054</FONT> /**<a name="line.54"></a> |
| <FONT color="green">055</FONT> * Return the node name, defined in the<a name="line.55"></a> |
| <FONT color="green">056</FONT> * Constants class.<a name="line.56"></a> |
| <FONT color="green">057</FONT> * @see org.apache.xalan.templates.Constants<a name="line.57"></a> |
| <FONT color="green">058</FONT> * @return The node name<a name="line.58"></a> |
| <FONT color="green">059</FONT> * <a name="line.59"></a> |
| <FONT color="green">060</FONT> */ <a name="line.60"></a> |
| <FONT color="green">061</FONT> public String getNodeName()<a name="line.61"></a> |
| <FONT color="green">062</FONT> {<a name="line.62"></a> |
| <FONT color="green">063</FONT> return Constants.EXSLT_ELEMNAME_FUNCTION_STRING;<a name="line.63"></a> |
| <FONT color="green">064</FONT> }<a name="line.64"></a> |
| <FONT color="green">065</FONT> <a name="line.65"></a> |
| <FONT color="green">066</FONT> public void execute(TransformerImpl transformer, XObject[] args)<a name="line.66"></a> |
| <FONT color="green">067</FONT> throws TransformerException<a name="line.67"></a> |
| <FONT color="green">068</FONT> {<a name="line.68"></a> |
| <FONT color="green">069</FONT> XPathContext xctxt = transformer.getXPathContext();<a name="line.69"></a> |
| <FONT color="green">070</FONT> VariableStack vars = xctxt.getVarStack();<a name="line.70"></a> |
| <FONT color="green">071</FONT> <a name="line.71"></a> |
| <FONT color="green">072</FONT> // Increment the frame bottom of the variable stack by the<a name="line.72"></a> |
| <FONT color="green">073</FONT> // frame size<a name="line.73"></a> |
| <FONT color="green">074</FONT> int thisFrame = vars.getStackFrame();<a name="line.74"></a> |
| <FONT color="green">075</FONT> int nextFrame = vars.link(m_frameSize);<a name="line.75"></a> |
| <FONT color="green">076</FONT> <a name="line.76"></a> |
| <FONT color="green">077</FONT> if (m_inArgsSize < args.length) {<a name="line.77"></a> |
| <FONT color="green">078</FONT> throw new TransformerException ("function called with too many args");<a name="line.78"></a> |
| <FONT color="green">079</FONT> }<a name="line.79"></a> |
| <FONT color="green">080</FONT> <a name="line.80"></a> |
| <FONT color="green">081</FONT> // Set parameters,<a name="line.81"></a> |
| <FONT color="green">082</FONT> // have to clear the section of the stack frame that has params.<a name="line.82"></a> |
| <FONT color="green">083</FONT> if (m_inArgsSize > 0) {<a name="line.83"></a> |
| <FONT color="green">084</FONT> vars.clearLocalSlots(0, m_inArgsSize);<a name="line.84"></a> |
| <FONT color="green">085</FONT> <a name="line.85"></a> |
| <FONT color="green">086</FONT> if (args.length > 0) {<a name="line.86"></a> |
| <FONT color="green">087</FONT> vars.setStackFrame(thisFrame);<a name="line.87"></a> |
| <FONT color="green">088</FONT> NodeList children = this.getChildNodes();<a name="line.88"></a> |
| <FONT color="green">089</FONT> <a name="line.89"></a> |
| <FONT color="green">090</FONT> for (int i = 0; i < args.length; i ++) {<a name="line.90"></a> |
| <FONT color="green">091</FONT> Node child = children.item(i);<a name="line.91"></a> |
| <FONT color="green">092</FONT> if (children.item(i) instanceof ElemParam) {<a name="line.92"></a> |
| <FONT color="green">093</FONT> ElemParam param = (ElemParam)children.item(i);<a name="line.93"></a> |
| <FONT color="green">094</FONT> vars.setLocalVariable(param.getIndex(), args[i], nextFrame);<a name="line.94"></a> |
| <FONT color="green">095</FONT> }<a name="line.95"></a> |
| <FONT color="green">096</FONT> }<a name="line.96"></a> |
| <FONT color="green">097</FONT> <a name="line.97"></a> |
| <FONT color="green">098</FONT> vars.setStackFrame(nextFrame);<a name="line.98"></a> |
| <FONT color="green">099</FONT> }<a name="line.99"></a> |
| <FONT color="green">100</FONT> }<a name="line.100"></a> |
| <FONT color="green">101</FONT> <a name="line.101"></a> |
| <FONT color="green">102</FONT> // Removed ElemTemplate 'push' and 'pop' of RTFContext, in order to avoid losing the RTF context <a name="line.102"></a> |
| <FONT color="green">103</FONT> // before a value can be returned. ElemExsltFunction operates in the scope of the template that called <a name="line.103"></a> |
| <FONT color="green">104</FONT> // the function.<a name="line.104"></a> |
| <FONT color="green">105</FONT> // xctxt.pushRTFContext();<a name="line.105"></a> |
| <FONT color="green">106</FONT> <a name="line.106"></a> |
| <FONT color="green">107</FONT> if (transformer.getDebug())<a name="line.107"></a> |
| <FONT color="green">108</FONT> transformer.getTraceManager().fireTraceEvent(this);<a name="line.108"></a> |
| <FONT color="green">109</FONT> <a name="line.109"></a> |
| <FONT color="green">110</FONT> vars.setStackFrame(nextFrame);<a name="line.110"></a> |
| <FONT color="green">111</FONT> transformer.executeChildTemplates(this, true);<a name="line.111"></a> |
| <FONT color="green">112</FONT> <a name="line.112"></a> |
| <FONT color="green">113</FONT> // Reset the stack frame after the function call<a name="line.113"></a> |
| <FONT color="green">114</FONT> vars.unlink(thisFrame);<a name="line.114"></a> |
| <FONT color="green">115</FONT> <a name="line.115"></a> |
| <FONT color="green">116</FONT> if (transformer.getDebug())<a name="line.116"></a> |
| <FONT color="green">117</FONT> transformer.getTraceManager().fireTraceEndEvent(this);<a name="line.117"></a> |
| <FONT color="green">118</FONT> <a name="line.118"></a> |
| <FONT color="green">119</FONT> // Following ElemTemplate 'pop' removed -- see above.<a name="line.119"></a> |
| <FONT color="green">120</FONT> // xctxt.popRTFContext(); <a name="line.120"></a> |
| <FONT color="green">121</FONT> <a name="line.121"></a> |
| <FONT color="green">122</FONT> }<a name="line.122"></a> |
| <FONT color="green">123</FONT> <a name="line.123"></a> |
| <FONT color="green">124</FONT> /**<a name="line.124"></a> |
| <FONT color="green">125</FONT> * Called after everything else has been<a name="line.125"></a> |
| <FONT color="green">126</FONT> * recomposed, and allows the function to set remaining<a name="line.126"></a> |
| <FONT color="green">127</FONT> * values that may be based on some other property that<a name="line.127"></a> |
| <FONT color="green">128</FONT> * depends on recomposition.<a name="line.128"></a> |
| <FONT color="green">129</FONT> */<a name="line.129"></a> |
| <FONT color="green">130</FONT> public void compose(StylesheetRoot sroot) throws TransformerException<a name="line.130"></a> |
| <FONT color="green">131</FONT> {<a name="line.131"></a> |
| <FONT color="green">132</FONT> super.compose(sroot);<a name="line.132"></a> |
| <FONT color="green">133</FONT> <a name="line.133"></a> |
| <FONT color="green">134</FONT> // Register the function namespace (if not already registered).<a name="line.134"></a> |
| <FONT color="green">135</FONT> String namespace = getName().getNamespace();<a name="line.135"></a> |
| <FONT color="green">136</FONT> String handlerClass = sroot.getExtensionHandlerClass();<a name="line.136"></a> |
| <FONT color="green">137</FONT> Object[] args ={namespace, sroot};<a name="line.137"></a> |
| <FONT color="green">138</FONT> ExtensionNamespaceSupport extNsSpt = <a name="line.138"></a> |
| <FONT color="green">139</FONT> new ExtensionNamespaceSupport(namespace, handlerClass, args);<a name="line.139"></a> |
| <FONT color="green">140</FONT> sroot.getExtensionNamespacesManager().registerExtension(extNsSpt);<a name="line.140"></a> |
| <FONT color="green">141</FONT> // Make sure there is a handler for the EXSLT functions namespace<a name="line.141"></a> |
| <FONT color="green">142</FONT> // -- for isElementAvailable(). <a name="line.142"></a> |
| <FONT color="green">143</FONT> if (!(namespace.equals(Constants.S_EXSLT_FUNCTIONS_URL)))<a name="line.143"></a> |
| <FONT color="green">144</FONT> {<a name="line.144"></a> |
| <FONT color="green">145</FONT> namespace = Constants.S_EXSLT_FUNCTIONS_URL;<a name="line.145"></a> |
| <FONT color="green">146</FONT> args = new Object[]{namespace, sroot};<a name="line.146"></a> |
| <FONT color="green">147</FONT> extNsSpt = new ExtensionNamespaceSupport(namespace, handlerClass, args);<a name="line.147"></a> |
| <FONT color="green">148</FONT> sroot.getExtensionNamespacesManager().registerExtension(extNsSpt);<a name="line.148"></a> |
| <FONT color="green">149</FONT> }<a name="line.149"></a> |
| <FONT color="green">150</FONT> }<a name="line.150"></a> |
| <FONT color="green">151</FONT> }<a name="line.151"></a> |
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| </PRE> |
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