Mercurial > jhg
view src/org/tmatesoft/hg/core/HgFileRevision.java @ 316:ee6b467c1a5f
Supply HGFileRevision with copy information when possible, calculate it otherwise
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Wed, 28 Sep 2011 13:09:16 +0200 |
parents | 4c3b9f679412 |
children | 58725dd511b3 |
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/* * 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.core; import org.tmatesoft.hg.repo.HgDataFile; import org.tmatesoft.hg.repo.HgInternals; import org.tmatesoft.hg.repo.HgRepository; import org.tmatesoft.hg.util.ByteChannel; import org.tmatesoft.hg.util.CancelledException; import org.tmatesoft.hg.util.Path; /** * Keeps together information about specific file revision * * @author Artem Tikhomirov * @author TMate Software Ltd. */ public final class HgFileRevision { private final HgRepository repo; private final Nodeid revision; private final Path path; private Path origin; private Boolean isCopy = null; // null means not yet known public HgFileRevision(HgRepository hgRepo, Nodeid rev, Path p) { if (hgRepo == null || rev == null || p == null) { // since it's package local, it is our code to blame for non validated arguments throw new IllegalArgumentException(); } repo = hgRepo; revision = rev; path = p; } // this cons shall be used when we know whether p was a copy. Perhaps, shall pass Map<Path,Path> instead to stress orig argument is not optional HgFileRevision(HgRepository hgRepo, Nodeid rev, Path p, Path orig) { this(hgRepo, rev, p); isCopy = Boolean.valueOf(orig == null); origin = orig; } public Path getPath() { return path; } public Nodeid getRevision() { return revision; } public boolean wasCopied() { if (isCopy == null) { checkCopy(); } return isCopy.booleanValue(); } /** * @return <code>null</code> if {@link #wasCopied()} is <code>false</code>, name of the copy source otherwise. */ public Path getOriginIfCopy() { if (wasCopied()) { return origin; } return null; } public void putContentTo(ByteChannel sink) throws HgDataStreamException, CancelledException { HgDataFile fn = repo.getFileNode(path); int localRevision = fn.getLocalRevision(revision); fn.contentWithFilters(localRevision, sink); } private void checkCopy() { HgDataFile fn = repo.getFileNode(path); try { if (fn.isCopy()) { if (fn.getRevision(0).equals(revision)) { // this HgFileRevision represents first revision of the copy isCopy = Boolean.TRUE; origin = fn.getCopySourceName(); return; } } } catch (HgDataStreamException ex) { HgInternals.getContext(repo).getLog().error(getClass(), ex, null); } isCopy = Boolean.FALSE; } }