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plantuml/src/net/sourceforge/plantuml/gitlog/GNodeBuilder.java
2023-02-22 19:43:48 +01:00

95 lines
2.5 KiB
Java

/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
*
* Project Info: https://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* https://plantuml.com/patreon (only 1$ per month!)
* https://plantuml.com/paypal
*
* This file is part of PlantUML.
*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* PlantUML 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 General Public
* License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.gitlog;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
public class GNodeBuilder {
private final List<GNode> all = new ArrayList<>();
public GNodeBuilder(List<Commit> allCommits) {
final Map<String, GNode> tmp = new LinkedHashMap<String, GNode>();
for (Commit commit : allCommits) {
final GNode node = new GNode();
node.setComment(commit.getComment());
node.addText(commit.getName());
tmp.put(commit.getName(), node);
}
for (Commit commit : allCommits) {
for (Commit parent : commit.getAncestors()) {
GNode.link(tmp.get(commit.getName()), tmp.get(parent.getName()));
}
}
this.all.addAll(tmp.values());
merge();
}
private void merge() {
while (true) {
boolean changed = false;
for (Iterator<GNode> it = all.iterator(); it.hasNext();) {
final GNode node = it.next();
if (node.canEatTheNextOne()) {
final GNode removed = node.eatTheNextOne();
all.remove(removed);
changed = true;
break;
}
}
if (changed == false) {
return;
}
}
}
public Collection<GNode> getAllNodes() {
return Collections.unmodifiableCollection(all);
}
}