Mercurial > hg4j
view src/org/tmatesoft/hg/internal/ChangelogHelper.java @ 216:c251bbc979cf
Use correct super cons to allow explicit initCause
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
---|---|
date | Tue, 17 May 2011 01:15:12 +0200 (2011-05-16) |
parents | ba2bf656f00f |
children | f052f40839ec |
line wrap: on
line source
/* * Copyright (c) 2011 TMate Software Ltd * * This program 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; version 2 of the License. * * 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 General Public License for more details. * * For information on how to redistribute this software under * the terms of a license other than GNU General Public License * contact TMate Software at support@hg4j.com */ package org.tmatesoft.hg.internal; import java.util.TreeMap; import org.tmatesoft.hg.repo.HgChangelog.RawChangeset; import org.tmatesoft.hg.repo.HgDataFile; import org.tmatesoft.hg.repo.HgInternals; import org.tmatesoft.hg.repo.HgRepository; import org.tmatesoft.hg.util.Path; /** * * @author Artem Tikhomirov * @author TMate Software Ltd. */ public class ChangelogHelper { private final int leftBoundary; private final HgRepository repo; private final TreeMap<Integer, RawChangeset> cache = new TreeMap<Integer, RawChangeset>(); private String nextCommitAuthor; /** * @param hgRepo * @param leftBoundaryRevision walker never visits revisions with local numbers less than specified, * IOW only revisions [leftBoundaryRevision..TIP] are considered. */ public ChangelogHelper(HgRepository hgRepo, int leftBoundaryRevision) { repo = hgRepo; leftBoundary = leftBoundaryRevision; } /** * @return the repo */ public HgRepository getRepo() { return repo; } /** * Walks changelog in reverse order * @param file * @return changeset where specified file is mentioned among affected files, or * <code>null</code> if none found up to leftBoundary */ public RawChangeset findLatestChangeWith(Path file) { HgDataFile df = repo.getFileNode(file); int changelogRev = df.getChangesetLocalRevision(HgRepository.TIP); if (changelogRev >= leftBoundary) { // the method is likely to be invoked for different files, // while changesets might be the same. Cache 'em not to read too much. RawChangeset cs = cache.get(changelogRev); if (cs == null) { cs = repo.getChangelog().range(changelogRev, changelogRev).get(0); cache.put(changelogRev, cs); } return cs; } return null; } public String getNextCommitUsername() { if (nextCommitAuthor == null) { nextCommitAuthor = new HgInternals(repo).getNextCommitUsername(); } return nextCommitAuthor; } }