/*
* SonarQube
* Copyright (C) 2009-2017 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.markdown;
import org.sonar.channel.RegexChannel;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Markdown interprets text in brackets followed by text in parentheses to generate documented links.
*
* E.g., the input [See documentation](http://docs.sonarqube.org/display/SONAR) will produce
* {@literal<a href="http://docs.sonarqube.org/display/SONAR">}See documentation{@literal</a>}
*/
class HtmlLinkChannel extends RegexChannel<MarkdownOutput> {
private static final String LINK_REGEX = "\\[([^\\]]+)\\]\\(([^\\)]+)\\)";
private static final Pattern LINK_PATTERN = Pattern.compile(LINK_REGEX);
public HtmlLinkChannel() {
super(LINK_REGEX);
}
@Override
protected void consume(CharSequence token, MarkdownOutput output) {
Matcher matcher = LINK_PATTERN.matcher(token);
// Initialize match groups
matcher.matches();
String content = matcher.group(1);
String url = matcher.group(2);
output.append("<a href=\"");
output.append(url);
output.append("\" target=\"_blank\">");
output.append(content);
output.append("</a>");
}
}