/*
* Copyright 2008-2016 the original author or authors.
*
* Licensed 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 com.nominanuda.zen.xml;
import javax.annotation.concurrent.ThreadSafe;
import org.xml.sax.SAXException;
@ThreadSafe
public class WhiteSpaceNormalizingTransformer extends ForwardingTransformerHandlerBase {
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {
char[] ch2 = new char[length];
int end = start + length;
int cur = 0;
boolean wsSeen = false;
for(int i = start; i < end; i++) {
if(Character.isWhitespace(ch[i])) {
if(! wsSeen) {
ch2[cur++] = ' ';
wsSeen = true;
}
} else {
wsSeen = false;
ch2[cur++] = ch[i];
}
}
super.characters(ch2, 0, cur);
}
@Override
public void ignorableWhitespace(char[] ch, int start, int length)
throws SAXException {
}
}