| /* |
| * 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: ProcessorCharacters.java 468640 2006-10-28 06:53:53Z minchau $ |
| */ |
| package org.apache.xalan.processor; |
| |
| import javax.xml.transform.TransformerException; |
| |
| import org.apache.xalan.templates.ElemTemplateElement; |
| import org.apache.xalan.templates.ElemText; |
| import org.apache.xalan.templates.ElemTextLiteral; |
| import org.apache.xml.utils.XMLCharacterRecognizer; |
| |
| import org.w3c.dom.Node; |
| |
| /** |
| * This class processes character events for a XSLT template element. |
| * @see <a href="http://www.w3.org/TR/xslt#dtd">XSLT DTD</a> |
| * @see <a href="http://www.w3.org/TR/xslt#section-Creating-the-Result-Tree">section-Creating-the-Result-Tree in XSLT Specification</a> |
| */ |
| public class ProcessorCharacters extends XSLTElementProcessor |
| { |
| static final long serialVersionUID = 8632900007814162650L; |
| |
| /** |
| * Receive notification of the start of the non-text event. This |
| * is sent to the current processor when any non-text event occurs. |
| * |
| * @param handler non-null reference to current StylesheetHandler that is constructing the Templates. |
| */ |
| public void startNonText(StylesheetHandler handler) throws org.xml.sax.SAXException |
| { |
| if (this == handler.getCurrentProcessor()) |
| { |
| handler.popProcessor(); |
| } |
| |
| int nChars = m_accumulator.length(); |
| |
| if ((nChars > 0) |
| && ((null != m_xslTextElement) |
| ||!XMLCharacterRecognizer.isWhiteSpace(m_accumulator)) |
| || handler.isSpacePreserve()) |
| { |
| ElemTextLiteral elem = new ElemTextLiteral(); |
| |
| elem.setDOMBackPointer(m_firstBackPointer); |
| elem.setLocaterInfo(handler.getLocator()); |
| try |
| { |
| elem.setPrefixes(handler.getNamespaceSupport()); |
| } |
| catch(TransformerException te) |
| { |
| throw new org.xml.sax.SAXException(te); |
| } |
| |
| boolean doe = (null != m_xslTextElement) |
| ? m_xslTextElement.getDisableOutputEscaping() : false; |
| |
| elem.setDisableOutputEscaping(doe); |
| elem.setPreserveSpace(true); |
| |
| char[] chars = new char[nChars]; |
| |
| m_accumulator.getChars(0, nChars, chars, 0); |
| elem.setChars(chars); |
| |
| ElemTemplateElement parent = handler.getElemTemplateElement(); |
| |
| parent.appendChild(elem); |
| } |
| |
| m_accumulator.setLength(0); |
| m_firstBackPointer = null; |
| } |
| |
| protected Node m_firstBackPointer = null; |
| |
| /** |
| * Receive notification of character data inside an element. |
| * |
| * |
| * @param handler non-null reference to current StylesheetHandler that is constructing the Templates. |
| * @param ch The characters. |
| * @param start The start position in the character array. |
| * @param length The number of characters to use from the |
| * character array. |
| * @throws org.xml.sax.SAXException Any SAX exception, possibly |
| * wrapping another exception. |
| * @see org.xml.sax.ContentHandler#characters |
| */ |
| public void characters( |
| StylesheetHandler handler, char ch[], int start, int length) |
| throws org.xml.sax.SAXException |
| { |
| |
| m_accumulator.append(ch, start, length); |
| |
| if(null == m_firstBackPointer) |
| m_firstBackPointer = handler.getOriginatingNode(); |
| |
| // Catch all events until a non-character event. |
| if (this != handler.getCurrentProcessor()) |
| handler.pushProcessor(this); |
| } |
| |
| /** |
| * Receive notification of the end of an element. |
| * |
| * @param handler The calling StylesheetHandler/TemplatesBuilder. |
| * @param uri The Namespace URI, or the empty string if the |
| * element has no Namespace URI or if Namespace |
| * processing is not being performed. |
| * @param localName The local name (without prefix), or the |
| * empty string if Namespace processing is not being |
| * performed. |
| * @param rawName The raw XML 1.0 name (with prefix), or the |
| * empty string if raw names are not available. |
| * @see org.apache.xalan.processor.StylesheetHandler#startElement |
| * @see org.apache.xalan.processor.StylesheetHandler#endElement |
| * @see org.xml.sax.ContentHandler#startElement |
| * @see org.xml.sax.ContentHandler#endElement |
| * @see org.xml.sax.Attributes |
| */ |
| public void endElement( |
| StylesheetHandler handler, String uri, String localName, String rawName) |
| throws org.xml.sax.SAXException |
| { |
| |
| // Since this has been installed as the current processor, we |
| // may get and end element event, in which case, we pop and clear |
| // and then call the real element processor. |
| startNonText(handler); |
| handler.getCurrentProcessor().endElement(handler, uri, localName, |
| rawName); |
| handler.popProcessor(); |
| } |
| |
| /** |
| * Accumulate characters, until a non-whitespace event has |
| * occured. |
| */ |
| private StringBuffer m_accumulator = new StringBuffer(); |
| |
| /** |
| * The xsl:text processor will call this to set a |
| * preserve space state. |
| */ |
| private ElemText m_xslTextElement; |
| |
| /** |
| * Set the current setXslTextElement. The xsl:text |
| * processor will call this to set a preserve space state. |
| * |
| * @param xslTextElement The current xslTextElement that |
| * is preserving state, or null. |
| */ |
| void setXslTextElement(ElemText xslTextElement) |
| { |
| m_xslTextElement = xslTextElement; |
| } |
| } |