org.apache.xmlgraphics.ps.dsc.EventRecorder Maven / Gradle / Ivy
/*
* 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: EventRecorder.java 1804124 2017-08-04 14:13:54Z ssteiner $ */
package org.apache.xmlgraphics.ps.dsc;
import java.io.IOException;
import java.util.List;
import org.apache.xmlgraphics.ps.dsc.events.DSCComment;
/**
* DSCHandler implementation that records DSC events.
*/
public class EventRecorder implements DSCHandler {
private List events = new java.util.ArrayList();
/**
* Replays the recorded events to a specified DSCHandler instance.
* @param handler the DSCHandler to send the recorded events to
* @throws IOException In case of an I/O error
*/
public void replay(DSCHandler handler) throws IOException {
for (Object obj : events) {
if (obj instanceof PSLine) {
handler.line(((PSLine) obj).getLine());
} else if (obj instanceof PSComment) {
handler.comment(((PSComment) obj).getComment());
} else if (obj instanceof DSCComment) {
handler.handleDSCComment((DSCComment) obj);
} else {
throw new IllegalStateException("Unsupported class type");
}
}
}
/**
* @see org.apache.xmlgraphics.ps.dsc.DSCHandler#comment(java.lang.String)
*/
public void comment(String comment) throws IOException {
events.add(new PSComment(comment));
}
/**
* @see org.apache.xmlgraphics.ps.dsc.DSCHandler#handleDSCComment(
* org.apache.xmlgraphics.ps.dsc.events.DSCComment)
*/
public void handleDSCComment(DSCComment comment) throws IOException {
events.add(comment);
}
/**
* @see org.apache.xmlgraphics.ps.dsc.DSCHandler#line(java.lang.String)
*/
public void line(String line) throws IOException {
events.add(new PSLine(line));
}
/**
* @see org.apache.xmlgraphics.ps.dsc.DSCHandler#startDocument(java.lang.String)
*/
public void startDocument(String header) throws IOException {
throw new UnsupportedOperationException(
getClass().getName() + " is only used to handle parts of a document");
}
/**
* @see org.apache.xmlgraphics.ps.dsc.DSCHandler#endDocument()
*/
public void endDocument() throws IOException {
throw new UnsupportedOperationException(
getClass().getName() + " is only used to handle parts of a document");
}
private static class PSComment {
private String comment;
public PSComment(String comment) {
this.comment = comment;
}
public String getComment() {
return this.comment;
}
}
private static class PSLine {
private String line;
public PSLine(String line) {
this.line = line;
}
public String getLine() {
return this.line;
}
}
}