| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| /* |
| * $Id: ElemPI.java 468643 2006-10-28 06:56:03Z minchau $ |
| */ |
| package org.apache.xalan.templates; |
| |
| import javax.xml.transform.TransformerException; |
| |
| import org.apache.xalan.res.XSLTErrorResources; |
| import org.apache.xalan.transformer.TransformerImpl; |
| import org.apache.xml.utils.XML11Char; |
| import org.apache.xpath.XPathContext; |
| |
| /** |
| * Implement xsl:processing-instruction. |
| * <pre> |
| * <!ELEMENT xsl:processing-instruction %char-template;> |
| * <!ATTLIST xsl:processing-instruction |
| * name %avt; #REQUIRED |
| * %space-att; |
| * > |
| * </pre> |
| * @see <a href="http://www.w3.org/TR/xslt#section-Creating-Processing-Instructions">section-Creating-Processing-Instructions in XSLT Specification</a> |
| * @xsl.usage advanced |
| */ |
| public class ElemPI extends ElemTemplateElement |
| { |
| static final long serialVersionUID = 5621976448020889825L; |
| |
| /** |
| * The xsl:processing-instruction element has a required name |
| * attribute that specifies the name of the processing instruction node. |
| * The value of the name attribute is interpreted as an |
| * attribute value template. |
| * @serial |
| */ |
| private AVT m_name_atv = null; |
| |
| /** |
| * Set the "name" attribute. |
| * DJD |
| * |
| * @param v Value for the name attribute |
| */ |
| public void setName(AVT v) |
| { |
| m_name_atv = v; |
| } |
| |
| /** |
| * Get the "name" attribute. |
| * DJD |
| * |
| * @return The value of the "name" attribute |
| */ |
| public AVT getName() |
| { |
| return m_name_atv; |
| } |
| |
| /** |
| * This function is called after everything else has been |
| * recomposed, and allows the template to set remaining |
| * values that may be based on some other property that |
| * depends on recomposition. |
| */ |
| public void compose(StylesheetRoot sroot) throws TransformerException |
| { |
| super.compose(sroot); |
| java.util.Vector vnames = sroot.getComposeState().getVariableNames(); |
| if(null != m_name_atv) |
| m_name_atv.fixupVariables(vnames, sroot.getComposeState().getGlobalsSize()); |
| } |
| |
| |
| |
| /** |
| * Get an int constant identifying the type of element. |
| * @see org.apache.xalan.templates.Constants |
| * |
| * @return The token ID for the element |
| */ |
| public int getXSLToken() |
| { |
| return Constants.ELEMNAME_PI; |
| } |
| |
| /** |
| * Return the node name. |
| * |
| * @return The element's name |
| */ |
| public String getNodeName() |
| { |
| return Constants.ELEMNAME_PI_STRING; |
| } |
| |
| /** |
| * Create a processing instruction in the result tree. |
| * The content of the xsl:processing-instruction element is a |
| * template for the string-value of the processing instruction node. |
| * @see <a href="http://www.w3.org/TR/xslt#section-Creating-Processing-Instructions">section-Creating-Processing-Instructions in XSLT Specification</a> |
| * |
| * @param transformer non-null reference to the the current transform-time state. |
| * |
| * @throws TransformerException |
| */ |
| public void execute( |
| TransformerImpl transformer) |
| throws TransformerException |
| { |
| |
| XPathContext xctxt = transformer.getXPathContext(); |
| int sourceNode = xctxt.getCurrentNode(); |
| |
| String piName = m_name_atv == null ? null : m_name_atv.evaluate(xctxt, sourceNode, this); |
| |
| // Ignore processing instruction if name is null |
| if (piName == null) return; |
| |
| if (piName.equalsIgnoreCase("xml")) |
| { |
| transformer.getMsgMgr().warn( |
| this, XSLTErrorResources.WG_PROCESSINGINSTRUCTION_NAME_CANT_BE_XML, |
| new Object[]{ Constants.ATTRNAME_NAME, piName }); |
| return; |
| } |
| |
| // Only check if an avt was used (ie. this wasn't checked at compose time.) |
| // Ignore processing instruction, if invalid |
| else if ((!m_name_atv.isSimple()) && (!XML11Char.isXML11ValidNCName(piName))) |
| { |
| transformer.getMsgMgr().warn( |
| this, XSLTErrorResources.WG_PROCESSINGINSTRUCTION_NOTVALID_NCNAME, |
| new Object[]{ Constants.ATTRNAME_NAME, piName }); |
| return; |
| } |
| |
| // Note the content model is: |
| // <!ENTITY % instructions " |
| // %char-instructions; |
| // | xsl:processing-instruction |
| // | xsl:comment |
| // | xsl:element |
| // | xsl:attribute |
| // "> |
| String data = transformer.transformToString(this); |
| |
| try |
| { |
| transformer.getResultTreeHandler().processingInstruction(piName, data); |
| } |
| catch(org.xml.sax.SAXException se) |
| { |
| throw new TransformerException(se); |
| } |
| } |
| |
| /** |
| * Add a child to the child list. |
| * |
| * @param newChild Child to add to child list |
| * |
| * @return The child just added to the child list |
| * |
| * @throws DOMException |
| */ |
| public ElemTemplateElement appendChild(ElemTemplateElement newChild) |
| { |
| |
| int type = ((ElemTemplateElement) newChild).getXSLToken(); |
| |
| switch (type) |
| { |
| |
| // char-instructions |
| case Constants.ELEMNAME_TEXTLITERALRESULT : |
| case Constants.ELEMNAME_APPLY_TEMPLATES : |
| case Constants.ELEMNAME_APPLY_IMPORTS : |
| case Constants.ELEMNAME_CALLTEMPLATE : |
| case Constants.ELEMNAME_FOREACH : |
| case Constants.ELEMNAME_VALUEOF : |
| case Constants.ELEMNAME_COPY_OF : |
| case Constants.ELEMNAME_NUMBER : |
| case Constants.ELEMNAME_CHOOSE : |
| case Constants.ELEMNAME_IF : |
| case Constants.ELEMNAME_TEXT : |
| case Constants.ELEMNAME_COPY : |
| case Constants.ELEMNAME_VARIABLE : |
| case Constants.ELEMNAME_MESSAGE : |
| |
| // instructions |
| // case Constants.ELEMNAME_PI: |
| // case Constants.ELEMNAME_COMMENT: |
| // case Constants.ELEMNAME_ELEMENT: |
| // case Constants.ELEMNAME_ATTRIBUTE: |
| break; |
| default : |
| error(XSLTErrorResources.ER_CANNOT_ADD, |
| new Object[]{ newChild.getNodeName(), |
| this.getNodeName() }); //"Can not add " +((ElemTemplateElement)newChild).m_elemName + |
| |
| //" to " + this.m_elemName); |
| } |
| |
| return super.appendChild(newChild); |
| } |
| } |