/*************************GO-LICENSE-START*********************************
* Copyright 2014 ThoughtWorks, Inc.
*
* 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.
*************************GO-LICENSE-END***********************************/
package com.thoughtworks.go.domain.materials.git;
import java.util.LinkedList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.thoughtworks.go.domain.materials.Modification;
import com.thoughtworks.go.util.DateUtils;
public class GitModificationParser {
private LinkedList<Modification> modifications = new LinkedList<>();
private static final String SPACES = "\\s+";
private static final String COMMENT_INDENT = "\\s{4}";
private static final String COMMENT_TEXT = "(.*)";
private static final String HASH = "(\\w+)";
private static final String DATE = "(.+)";
private static final String AUTHOR = "(.+)";
private static final Pattern COMMIT_PATTERN = Pattern.compile("^commit" + SPACES + HASH + "$");
private static final Pattern AUTHOR_PATTERN = Pattern.compile("^Author:"+ SPACES + AUTHOR + "$");
private static final Pattern DATE_PATTERN = Pattern.compile("^Date:" + SPACES + DATE + "$");
private static final Pattern COMMENT_PATTERN = Pattern.compile("^" + COMMENT_INDENT + COMMENT_TEXT + "$");
public List<Modification> parse(List<String> output) {
for (String line : output) {
processLine(line);
}
return modifications;
}
public List<Modification> getModifications() {
return modifications;
}
public void processLine(String line) {
Matcher matcher = COMMIT_PATTERN.matcher(line);
if (matcher.matches()) {
modifications.add(new Modification("", "", null, null, matcher.group(1)));
}
Matcher authorMatcher = AUTHOR_PATTERN.matcher(line);
if (authorMatcher.matches()) {
modifications.getLast().setUserName(authorMatcher.group(1));
}
Matcher dateMatcher = DATE_PATTERN.matcher(line);
if (dateMatcher.matches()) {
modifications.getLast().setModifiedTime(DateUtils.parseISO8601(dateMatcher.group(1)));
}
Matcher commentMatcher = COMMENT_PATTERN.matcher(line);
if (commentMatcher.matches()) {
Modification last = modifications.getLast();
String comment = last.getComment();
if (!comment.isEmpty()) comment += "\n";
last.setComment(comment + commentMatcher.group(1));
}
}
}