| /* |
| * 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. |
| */ |
| package org.apache.axiom.ts.dimension; |
| |
| import java.io.IOException; |
| |
| import org.xml.sax.Attributes; |
| import org.xml.sax.ContentHandler; |
| import org.xml.sax.DTDHandler; |
| import org.xml.sax.EntityResolver; |
| import org.xml.sax.ErrorHandler; |
| import org.xml.sax.InputSource; |
| import org.xml.sax.Locator; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.SAXNotRecognizedException; |
| import org.xml.sax.SAXNotSupportedException; |
| import org.xml.sax.XMLFilter; |
| import org.xml.sax.XMLReader; |
| import org.xml.sax.ext.LexicalHandler; |
| |
| final class CoalescingXMLFilter implements XMLFilter, ContentHandler, LexicalHandler { |
| private static final String URI_LEXICAL_HANDLER = |
| "http://xml.org/sax/properties/lexical-handler"; |
| |
| private XMLReader parent; |
| private ContentHandler contentHandler; |
| private LexicalHandler lexicalHandler; |
| private char[] buffer = new char[1024]; |
| private int bufferSize; |
| |
| CoalescingXMLFilter(XMLReader parent) { |
| this.parent = parent; |
| } |
| |
| @Override |
| public void setParent(XMLReader parent) { |
| this.parent = parent; |
| } |
| |
| @Override |
| public XMLReader getParent() { |
| return parent; |
| } |
| |
| @Override |
| public void setEntityResolver(EntityResolver resolver) { |
| parent.setEntityResolver(resolver); |
| } |
| |
| @Override |
| public EntityResolver getEntityResolver() { |
| return parent.getEntityResolver(); |
| } |
| |
| @Override |
| public void setDTDHandler(DTDHandler handler) { |
| parent.setDTDHandler(handler); |
| } |
| |
| @Override |
| public DTDHandler getDTDHandler() { |
| return parent.getDTDHandler(); |
| } |
| |
| @Override |
| public void setContentHandler(ContentHandler handler) { |
| contentHandler = handler; |
| } |
| |
| @Override |
| public ContentHandler getContentHandler() { |
| return contentHandler; |
| } |
| |
| @Override |
| public void setErrorHandler(ErrorHandler handler) { |
| parent.setErrorHandler(handler); |
| } |
| |
| @Override |
| public ErrorHandler getErrorHandler() { |
| return parent.getErrorHandler(); |
| } |
| |
| @Override |
| public Object getProperty(String name) |
| throws SAXNotRecognizedException, SAXNotSupportedException { |
| if (URI_LEXICAL_HANDLER.equals(name)) { |
| return lexicalHandler; |
| } else { |
| return parent.getProperty(name); |
| } |
| } |
| |
| @Override |
| public void setProperty(String name, Object value) |
| throws SAXNotRecognizedException, SAXNotSupportedException { |
| if (URI_LEXICAL_HANDLER.equals(name)) { |
| lexicalHandler = (LexicalHandler) value; |
| } else { |
| parent.setProperty(name, value); |
| } |
| } |
| |
| @Override |
| public boolean getFeature(String name) |
| throws SAXNotRecognizedException, SAXNotSupportedException { |
| return parent.getFeature(name); |
| } |
| |
| @Override |
| public void setFeature(String name, boolean value) |
| throws SAXNotRecognizedException, SAXNotSupportedException { |
| parent.setFeature(name, value); |
| } |
| |
| private void setup() throws SAXException { |
| parent.setContentHandler(this); |
| parent.setProperty(URI_LEXICAL_HANDLER, this); |
| } |
| |
| @Override |
| public void parse(InputSource input) throws IOException, SAXException { |
| setup(); |
| parent.parse(input); |
| } |
| |
| @Override |
| public void parse(String systemId) throws IOException, SAXException { |
| setup(); |
| parent.parse(systemId); |
| } |
| |
| private void flushBuffer() throws SAXException { |
| if (bufferSize > 0) { |
| contentHandler.characters(buffer, 0, bufferSize); |
| } |
| bufferSize = 0; |
| } |
| |
| @Override |
| public void setDocumentLocator(Locator locator) { |
| contentHandler.setDocumentLocator(locator); |
| } |
| |
| @Override |
| public void startDocument() throws SAXException { |
| contentHandler.startDocument(); |
| } |
| |
| @Override |
| public void endDocument() throws SAXException { |
| flushBuffer(); |
| contentHandler.endDocument(); |
| } |
| |
| @Override |
| public void startPrefixMapping(String prefix, String uri) throws SAXException { |
| flushBuffer(); |
| contentHandler.startPrefixMapping(prefix, uri); |
| } |
| |
| @Override |
| public void endPrefixMapping(String prefix) throws SAXException { |
| flushBuffer(); |
| contentHandler.endPrefixMapping(prefix); |
| } |
| |
| @Override |
| public void startElement(String uri, String localName, String qName, Attributes atts) |
| throws SAXException { |
| flushBuffer(); |
| contentHandler.startElement(uri, localName, qName, atts); |
| } |
| |
| @Override |
| public void endElement(String uri, String localName, String qName) throws SAXException { |
| flushBuffer(); |
| contentHandler.endElement(uri, localName, qName); |
| } |
| |
| @Override |
| public void characters(char[] ch, int start, int length) throws SAXException { |
| int bufferCapacity = buffer.length; |
| while (bufferSize + length > bufferCapacity) { |
| bufferCapacity *= 2; |
| } |
| if (bufferCapacity != buffer.length) { |
| char[] newBuffer = new char[bufferCapacity]; |
| System.arraycopy(buffer, 0, newBuffer, 0, bufferSize); |
| buffer = newBuffer; |
| } |
| System.arraycopy(ch, start, buffer, bufferSize, length); |
| bufferSize += length; |
| } |
| |
| @Override |
| public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException { |
| flushBuffer(); |
| contentHandler.ignorableWhitespace(ch, start, length); |
| } |
| |
| @Override |
| public void processingInstruction(String target, String data) throws SAXException { |
| flushBuffer(); |
| contentHandler.processingInstruction(target, data); |
| } |
| |
| @Override |
| public void skippedEntity(String name) throws SAXException { |
| flushBuffer(); |
| contentHandler.skippedEntity(name); |
| } |
| |
| @Override |
| public void startDTD(String name, String publicId, String systemId) throws SAXException { |
| flushBuffer(); |
| if (lexicalHandler != null) { |
| lexicalHandler.startDTD(name, publicId, systemId); |
| } |
| } |
| |
| @Override |
| public void endDTD() throws SAXException { |
| if (lexicalHandler != null) { |
| lexicalHandler.endDTD(); |
| } |
| } |
| |
| @Override |
| public void startEntity(String name) throws SAXException { |
| flushBuffer(); |
| if (lexicalHandler != null) { |
| lexicalHandler.startEntity(name); |
| } |
| } |
| |
| @Override |
| public void endEntity(String name) throws SAXException { |
| flushBuffer(); |
| if (lexicalHandler != null) { |
| lexicalHandler.endEntity(name); |
| } |
| } |
| |
| @Override |
| public void startCDATA() throws SAXException { |
| flushBuffer(); |
| if (lexicalHandler != null) { |
| lexicalHandler.startCDATA(); |
| } |
| } |
| |
| @Override |
| public void endCDATA() throws SAXException { |
| flushBuffer(); |
| if (lexicalHandler != null) { |
| lexicalHandler.endCDATA(); |
| } |
| } |
| |
| @Override |
| public void comment(char[] ch, int start, int length) throws SAXException { |
| flushBuffer(); |
| if (lexicalHandler != null) { |
| lexicalHandler.comment(ch, start, length); |
| } |
| } |
| } |