| package org.apache.maven.scm.provider.perforce.command; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import org.apache.maven.scm.CommandParameters; |
| import org.apache.maven.scm.ScmException; |
| import org.apache.maven.scm.ScmFileSet; |
| import org.apache.maven.scm.ScmResult; |
| import org.apache.maven.scm.command.AbstractCommand; |
| import org.apache.maven.scm.log.ScmLogger; |
| import org.apache.maven.scm.provider.ScmProviderRepository; |
| import org.apache.maven.scm.provider.perforce.PerforceScmProvider; |
| import org.apache.maven.scm.provider.perforce.repository.PerforceScmProviderRepository; |
| import org.codehaus.plexus.util.cli.CommandLineException; |
| import org.codehaus.plexus.util.cli.Commandline; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * Encapsulates the 'p4 info' command which can be very useful in determining |
| * the runtime environment. Use <code>getEntry(String key)</code> to query |
| * the info set for a particular property. The data from p4 info looks like this: |
| * <p/> |
| * <pre> |
| * User name: mperham |
| * Client name: mikeperham-dt |
| * Client host: mikeperham-dt |
| * Client root: d:\perforce |
| * </pre> |
| * <p/> |
| * where the key is the content before the first colon and the value is the data after |
| * the first colon, trimmed. For example: |
| * <code>PerforceInfoCommand.getInfo( this, repo ).getEntry( "User name" )</code> |
| * <p/> |
| * Note that this is not a traditional SCM command. This uses the Command class |
| * simply because it needs a logger for error handling and the current repository data for |
| * command line creation. |
| * |
| * @author mperham |
| * @version $Id: $ |
| */ |
| public class PerforceInfoCommand |
| extends AbstractCommand |
| implements PerforceCommand |
| { |
| private static PerforceInfoCommand singleton = null; |
| |
| private Map entries = null; |
| |
| public static PerforceInfoCommand getInfo( ScmLogger logger, PerforceScmProviderRepository repo ) |
| { |
| return getSingleton( logger, repo ); |
| } |
| |
| public String getEntry( String key ) |
| { |
| return (String) entries.get( key ); |
| } |
| |
| private static synchronized PerforceInfoCommand getSingleton( ScmLogger logger, |
| PerforceScmProviderRepository repo ) |
| { |
| if ( singleton == null ) |
| { |
| PerforceInfoCommand pic = new PerforceInfoCommand(); |
| if ( logger != null ) |
| { |
| pic.setLogger( logger ); |
| } |
| try |
| { |
| pic.executeCommand( repo, null, null ); |
| singleton = pic; |
| } |
| catch ( ScmException e ) |
| { |
| pic.getLogger().error( e ); |
| } |
| } |
| return singleton; |
| } |
| |
| /** {@inheritDoc} */ |
| protected ScmResult executeCommand( ScmProviderRepository repo, ScmFileSet scmFileSet, |
| CommandParameters commandParameters ) |
| throws ScmException |
| { |
| if ( !PerforceScmProvider.isLive() ) |
| { |
| return null; |
| } |
| |
| try |
| { |
| Commandline command = PerforceScmProvider.createP4Command( (PerforceScmProviderRepository) repo, null ); |
| command.createArgument().setValue( "info" ); |
| getLogger().debug( PerforceScmProvider.clean( "Executing: " + command.toString() ) ); |
| Process proc = command.execute(); |
| BufferedReader br = new BufferedReader( new InputStreamReader( proc.getInputStream() ) ); |
| String line; |
| entries = new HashMap(); |
| while ( ( line = br.readLine() ) != null ) |
| { |
| int idx = line.indexOf( ':' ); |
| if ( idx == -1 ) |
| { |
| if ( line.indexOf( "Client unknown." ) == -1 ) |
| { |
| throw new IllegalStateException( "Unexpected results from 'p4 info' command: " + line ); |
| } |
| else |
| { |
| getLogger().debug( "Cannot find client." ); |
| entries.put( "Client root", "" ); |
| } |
| } |
| else |
| { |
| String key = line.substring( 0, idx ); |
| String value = line.substring( idx + 1 ).trim(); |
| entries.put( key, value ); |
| } |
| } |
| } |
| catch ( CommandLineException e ) |
| { |
| throw new ScmException( e.getLocalizedMessage() ); |
| } |
| catch ( IOException e ) |
| { |
| throw new ScmException( e.getLocalizedMessage() ); |
| } |
| return null; |
| } |
| } |