/*
* Copyright 1999-2005 The Apache Software Foundation.
*
* 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 org.apache.cocoon.template.script.event;
import java.util.Iterator;
import org.apache.cocoon.components.expression.ExpressionContext;
import org.apache.cocoon.template.environment.ErrorHolder;
import org.apache.cocoon.template.environment.ExecutionContext;
import org.apache.cocoon.template.environment.ParsingContext;
import org.apache.cocoon.template.expression.JXTExpression;
import org.apache.cocoon.template.expression.Literal;
import org.apache.cocoon.template.expression.Substitutions;
import org.apache.commons.lang.ArrayUtils;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
/**
* @version SVN $Id: TextEvent.java 279084 2005-09-06 20:10:53Z lgawron $
*/
public class TextEvent extends Event {
public TextEvent(ParsingContext parsingContext, Locator location, char[] chars, int start, int length)
throws SAXException {
super(location);
this.raw = new char[length];
System.arraycopy(chars, start, this.raw, 0, length);
this.substitutions = new Substitutions(parsingContext, getLocation(), chars, start, length);
}
final Substitutions substitutions;
final char[] raw;
public char[] getRaw() {
return raw;
}
public Substitutions getSubstitutions() {
return substitutions;
}
interface CharHandler {
public void characters(char[] ch, int offset, int length)
throws SAXException;
}
protected static void characters(ExpressionContext expressionContext,
ExecutionContext executionContext,
TextEvent event, CharHandler handler)
throws SAXException {
Iterator iter = event.getSubstitutions().iterator();
while (iter.hasNext()) {
Object subst = iter.next();
char[] chars;
if (subst instanceof Literal) {
chars = ((Literal) subst).getCharArray();
} else {
JXTExpression expr = (JXTExpression) subst;
try {
Object val = expr.getValue(expressionContext);
chars = val != null ? val.toString().toCharArray()
: ArrayUtils.EMPTY_CHAR_ARRAY;
} catch (Exception e) {
throw new SAXParseException(e.getMessage(), event
.getLocation(), e);
} catch (Error err) {
throw new SAXParseException(err.getMessage(), event
.getLocation(), new ErrorHolder(err));
}
}
handler.characters(chars, 0, chars.length);
}
}
}