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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2014, Arnaud Roques
*
* Project Info: http://plantuml.sourceforge.net
*
* This file is part of PlantUML.
*
* Licensed under The MIT License (Massachusetts Institute of Technology License)
*
* See http://opensource.org/licenses/MIT
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
* IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*
* Original Author: Arnaud Roques
*/
package net.sourceforge.plantuml.preproc;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import net.sourceforge.plantuml.command.regex.MyPattern;
public class UncommentReadLine implements ReadLine {
private final ReadLine raw;
private final Pattern start;
private final Pattern unpause;
private String headerToRemove;
private boolean paused;
public UncommentReadLine(ReadLine source) {
this.raw = source;
this.start = MyPattern.cmpile("(?i)((?:\\W|\\<[^<>]*\\>)*)@start");
this.unpause = MyPattern.cmpile("(?i)((?:\\W|\\<[^<>]*\\>)*)@unpause");
}
public String readLine() throws IOException {
final String result = raw.readLine();
if (result == null) {
return null;
}
final Matcher m = start.matcher(result);
if (m.find()) {
headerToRemove = m.group(1);
}
if (paused) {
final Matcher m2 = unpause.matcher(result);
if (m2.find()) {
headerToRemove = m2.group(1);
}
}
if (headerToRemove != null && headerToRemove.startsWith(result)) {
return "";
}
if (headerToRemove != null && result.startsWith(headerToRemove)) {
return result.substring(headerToRemove.length());
}
return result;
}
public void close() throws IOException {
this.raw.close();
}
public void setPaused(boolean paused) {
this.paused = paused;
}
}
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