/* * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.tools.internal.ws.wsdl.parser; import com.sun.xml.internal.bind.WhiteSpaceProcessor; import org.xml.sax.*; import org.xml.sax.helpers.XMLFilterImpl; /** * Strips ignorable whitespace from SAX event stream. * *
* This filter works only when the event stream doesn't
* contain any mixed content.
*
* @author
* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
* Vivek Pandey
*/
class WhitespaceStripper extends XMLFilterImpl {
private int state = 0;
private char[] buf = new char[1024];
private int bufLen = 0;
private static final int AFTER_START_ELEMENT = 1;
private static final int AFTER_END_ELEMENT = 2;
public WhitespaceStripper(XMLReader reader) {
setParent(reader);
}
public WhitespaceStripper(ContentHandler handler, ErrorHandler eh, EntityResolver er) {
setContentHandler(handler);
if(eh!=null) setErrorHandler(eh);
if(er!=null) setEntityResolver(er);
}
public void characters(char[] ch, int start, int length) throws SAXException {
switch(state) {
case AFTER_START_ELEMENT:
// we have to store the characters here, even if it consists entirely
// of whitespaces. This is because successive characters event might
// include non-whitespace char, in which case all the whitespaces in
// this event may suddenly become significant.
if( bufLen+length>buf.length ) {
// reallocate buffer
char[] newBuf = new char[Math.max(bufLen+length,buf.length*2)];
System.arraycopy(buf,0,newBuf,0,bufLen);
buf = newBuf;
}
System.arraycopy(ch,start,buf,bufLen,length);
bufLen += length;
break;
case AFTER_END_ELEMENT:
// check if this is ignorable.
int len = start+length;
for( int i=start; i