| /* |
| * 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.util.Iterator; |
| 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 { |
| Iterator iter = events.iterator(); |
| while (iter.hasNext()) { |
| Object obj = iter.next(); |
| 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; |
| } |
| } |
| |
| } |