/*
* #%L
* JavaHg
* %%
* Copyright (C) 2011 aragost Trifork ag
* %%
* 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.
* #L%
*/
package com.aragost.javahg.commands;
import java.io.IOException;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import com.aragost.javahg.Changeset;
import com.aragost.javahg.Repository;
import com.aragost.javahg.commands.flags.AnnotateCommandFlags;
import com.aragost.javahg.internals.HgInputStream;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
/**
* Command class for executing <tt>hg annotate</tt>. Set flags from
* {@link AnnotateCommandFlags} and see the {@link #execute} method
* for how to run the command.
*/
public class AnnotateCommand extends AnnotateCommandFlags {
/**
* @param repository
* the repository associated with this command.
*/
public AnnotateCommand(Repository repository) {
super(repository);
cmdAppend("--number");
}
/**
* Execute <tt>hg annotate</tt> for the specified file.
* <p>
* On the command line, Mercurial can annotate more than one file,
* JavaHg can only annotate one file for each call (but the
* overhead is negligible to make multiple calls).
*
* @param file
* @return list of annotated lines.
* @throws IOException
*/
public List<AnnotateLine> execute(String file) throws IOException {
Repository repo = getRepository();
List<Integer> revisions = Lists.newArrayList();
List<String> lines = Lists.newArrayList();
HgInputStream stream = launchStream(file);
while (stream.peek() != -1) {
revisions.add(stream.revisionUpTo(':'));
stream.skip(1);
lines.add(stream.textUpTo('\n'));
}
Map<Integer, Changeset> revNumMap = createRevNumMap(repo, revisions);
int size = lines.size();
List<AnnotateLine> result = Lists.newArrayListWithCapacity(size);
for (int i = 0 ; i < size; i ++) {
Changeset changeset = revNumMap.get(revisions.get(i));
result.add(new AnnotateLine(changeset, lines.get(i)));
}
return result;
}
/**
* Create a map mapping revision numbers to Changesets
*
* @param repo
* @param revisions
* @return
*/
private Map<Integer, Changeset> createRevNumMap(Repository repo, List<Integer> revisions) {
Collection<Integer> uniqRevs = Sets.newHashSet(revisions);
String[] revs = new String[uniqRevs.size()];
int index = 0;
for (Integer rev : uniqRevs) {
revs[index++] = String.valueOf(rev);
}
LogCommand logCmd = LogCommand.on(repo).rev(revs);
Map<Integer, Changeset> revNumMap = Maps.newHashMap();
for (Changeset cs : logCmd.execute()) {
revNumMap.put(cs.getRevision(), cs);
}
return revNumMap;
}
}