/*
* #%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.internals;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Collections;
import java.util.List;
import com.aragost.javahg.Changeset;
import com.aragost.javahg.Repository;
import com.aragost.javahg.commands.ExecutionException;
import com.aragost.javahg.commands.LogCommand;
import com.google.common.collect.Lists;
import com.google.common.io.ByteStreams;
public class PullPushHelper {
private static final byte[] BEGIN = "list of changesets:\n".getBytes();
private static final byte[] BEGIN_FALLBACK = "adding changesets\n"
.getBytes();
private static final byte[] LINE_BEGIN = "add changeset ".getBytes();
private static final byte[] REMOTE_ERROR = "remote: error: ".getBytes();
public static List<Changeset> parseStream(AbstractCommand command,
HgInputStream stream) throws IOException {
Repository repo = command.getRepository();
List<Changeset> result;
// Pulling locally the full nodes are written after
// "list of changesets:"
// Over HTTP this isn't written.
// In either case 12 character node prefixes are printed after
// "adding changesets".
// If possible use first case, otherwise fall back to node prefixes.
// Make a copy
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ByteStreams.copy(stream, bos);
stream.consumeAll();
stream = new HgInputStream(new ByteArrayInputStream(bos.toByteArray()), repo.newDecoder());
if (stream.find(BEGIN)) {
result = Lists.newArrayList();
while (!stream.isEof() && !stream.match(BEGIN_FALLBACK)) {
result.add(repo.changeset(stream.textUpTo('\n')));
}
} else {
stream = new HgInputStream(new ByteArrayInputStream(bos.toByteArray()), repo.newDecoder());
List<String> nodePrefixes = Lists.newArrayList();
if (stream.find(BEGIN_FALLBACK)) {
while (stream.find(LINE_BEGIN)) {
// 12 Character node prefix
nodePrefixes.add(stream.textUpTo('\n'));
}
}
if (nodePrefixes.isEmpty()) {
result = Collections.emptyList();
} else {
result = LogCommand
.on(repo)
.rev(nodePrefixes.toArray(new String[nodePrefixes
.size()])).execute();
}
}
stream = new HgInputStream(new ByteArrayInputStream(bos.toByteArray()), repo.newDecoder());
if (stream.find(REMOTE_ERROR)) {
throw new ExecutionException(command, stream.textUpTo('\n'));
}
return result;
}
}