/*
* 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.
*/
/* $Id$ */
package org.apache.xmlgraphics.ps.dsc;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.xmlgraphics.ps.DSCConstants;
import org.apache.xmlgraphics.ps.PSGenerator;
import org.apache.xmlgraphics.ps.dsc.events.DSCComment;
/**
* Default implementation of a DSCHandler which simply passes through the PostScript content
* unchanged. Subclasses can implement different behaviour, for example to filter certain
* DSC comments or to insert PostScript code at specific places.
*/
public class DefaultDSCHandler implements DSCHandler {
protected OutputStream out;
protected PSGenerator gen;
/**
* Creates a new instance.
* @param out OutputStream to pipe all received events to
*/
public DefaultDSCHandler(OutputStream out) {
this.out = out;
this.gen = new PSGenerator(this.out);
}
/** @see org.apache.xmlgraphics.ps.dsc.DSCHandler#startDocument(java.lang.String) */
public void startDocument(String header) throws IOException {
gen.writeln(header);
}
/** @see org.apache.xmlgraphics.ps.dsc.DSCHandler#endDocument() */
public void endDocument() throws IOException {
gen.writeDSCComment(DSCConstants.EOF);
}
/**
* @see org.apache.xmlgraphics.ps.dsc.DSCHandler#handleDSCComment(
* org.apache.xmlgraphics.ps.dsc.events.DSCComment)
*/
public void handleDSCComment(DSCComment comment) throws IOException {
comment.generate(gen);
}
/** @see org.apache.xmlgraphics.ps.dsc.DSCHandler#line(java.lang.String) */
public void line(String line) throws IOException {
gen.writeln(line);
}
/** @see org.apache.xmlgraphics.ps.dsc.DSCHandler#comment(java.lang.String) */
public void comment(String comment) throws IOException {
gen.commentln("%" + comment);
}
}