org.sonar.plugins.web.duplications.CommentChannel Maven / Gradle / Ivy
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/*
* SonarQube Web Plugin
* Copyright (C) 2010 SonarSource and Matthijs Galesloot
* [email protected]
*
* 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.sonar.plugins.web.duplications;
import net.sourceforge.pmd.cpd.Tokens;
import org.sonar.channel.Channel;
import org.sonar.channel.CodeReader;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class CommentChannel extends Channel {
private final Matcher matcher;
private final EmptyAppendable appendable = new EmptyAppendable();
public static final CommentChannel HTML_COMMENT = new CommentChannel("");
public static final CommentChannel JSP_COMMENT = new CommentChannel("<%--[\\w\\W]*?%>");
public static final CommentChannel CPP_COMMENT = new CommentChannel("//[^\n\r]*");
public static final CommentChannel C_COMMENT = new CommentChannel("/\\*[\\w\\W]*?\\*/");
public CommentChannel(String regex) {
this.matcher = Pattern.compile(regex).matcher("");
}
@Override
public boolean consume(CodeReader code, Tokens cpdTokens) {
return code.popTo(matcher, appendable) > 0;
}
private static class EmptyAppendable implements Appendable {
public Appendable append(CharSequence csq) throws IOException {
return null;
}
public Appendable append(char c) throws IOException {
return null;
}
public Appendable append(CharSequence csq, int start, int end) throws IOException {
return null;
}
}
}