/*
* Copyright (c) 2013 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 static org.tmatesoft.hg.repo.HgRepository.BAD_REVISION;
import static org.tmatesoft.hg.repo.HgRepository.TIP;
import org.tmatesoft.hg.core.HgBadArgumentException;
import org.tmatesoft.hg.core.Nodeid;
import org.tmatesoft.hg.repo.HgInvalidRevisionException;
import org.tmatesoft.hg.repo.HgRepository;
import org.tmatesoft.hg.repo.HgRuntimeException;
/**
* Common code to keep changelog revision and to perform boundary check.
*
* @author Artem Tikhomirov
* @author TMate Software Ltd.
*/
public class CsetParamKeeper {
private final HgRepository repo;
private int changelogRevisionIndex = HgRepository.BAD_REVISION;
public CsetParamKeeper(HgRepository hgRepo) {
repo = hgRepo;
}
public CsetParamKeeper set(Nodeid changeset) throws HgBadArgumentException {
try {
set(repo.getChangelog().getRevisionIndex(changeset));
} catch (HgInvalidRevisionException ex) {
throw new HgBadArgumentException("Can't find revision", ex).setRevision(changeset);
} catch (HgRuntimeException ex) {
throw new HgBadArgumentException(String.format("Can't initialize with revision %s", changeset.shortNotation()), ex);
}
return this;
}
public CsetParamKeeper set(int changelogRevIndex) throws HgBadArgumentException {
try {
int lastCsetIndex = repo.getChangelog().getLastRevision();
if (changelogRevIndex == HgRepository.TIP) {
changelogRevIndex = lastCsetIndex;
}
if (changelogRevIndex < 0 || changelogRevIndex > lastCsetIndex) {
throw new HgBadArgumentException(String.format("Bad revision index %d, value from [0..%d] expected", changelogRevIndex, lastCsetIndex), null).setRevisionIndex(changelogRevIndex);
}
doSet(changelogRevIndex);
} catch (HgRuntimeException ex) {
throw new HgBadArgumentException(String.format("Can't initialize with revision index %d", changelogRevIndex), ex);
}
return this;
}
public void doSet(int changelogRevIndex) {
changelogRevisionIndex = changelogRevIndex;
}
/**
* @return the value set, or {@link HgRepository#BAD_REVISION} otherwise
*/
public int get() {
return changelogRevisionIndex;
}
/**
* @param defaultRevisionIndex value to return when no revision was set, may be {@link HgRepository#TIP} which gets translated to real index if used
* @return changelog revision index if set, or defaultRevisionIndex value otherwise
*/
public int get(int defaultRevisionIndex) throws HgRuntimeException {
// XXX perhaps, shall translate other predefined constants (like WORKING COPY) here, too (e.g. for HgRevertCommand)
if (changelogRevisionIndex != BAD_REVISION && changelogRevisionIndex != TIP) {
return changelogRevisionIndex;
}
if (changelogRevisionIndex == TIP || defaultRevisionIndex == TIP) {
return repo.getChangelog().getLastRevision();
}
return defaultRevisionIndex;
}
}