package org.apache.maven.scm.provider.svn.svnexe.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 java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.PrintStream;
  import java.util.List;
  
  import org.apache.maven.scm.provider.svn.repository.SvnScmProviderRepository;
  import org.apache.maven.scm.provider.svn.util.SvnUtil;
  import org.codehaus.plexus.util.Os;
  import org.codehaus.plexus.util.StringUtils;
  import org.codehaus.plexus.util.cli.CommandLineException;
  import org.codehaus.plexus.util.cli.CommandLineUtils;
  import org.codehaus.plexus.util.cli.Commandline;
  import org.codehaus.plexus.util.cli.StreamConsumer;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Command line construction utility.
   *
   * @author Brett Porter
   * @author Olivier Lamy
   *
   */
  public final class SvnCommandLineUtils
  {
      private static final Logger LOGGER = LoggerFactory.getLogger( SvnCommandLineUtils.class );
  
      private SvnCommandLineUtils()
      {
      }
  
      public static void addTarget( Commandline cl, List<File> files )
          throws IOException
      {
          if ( files == null || files.isEmpty() )
          {
              return;
          }
  
          StringBuilder sb = new StringBuilder();
          String ls = System.getProperty( "line.separator" );
          for ( File f : files )
          {
              sb.append( f.getPath().replace( '\\', '/' ) );
              sb.append( ls );
          }
  
          File targets = File.createTempFile( "maven-scm-", "-targets" );
          PrintStream out = new PrintStream( new FileOutputStream( targets ) );
          out.print( sb );
          out.flush();
          out.close();
  
          cl.createArg().setValue( "--targets" );
          cl.createArg().setValue( targets.getAbsolutePath() );
  
          targets.deleteOnExit();
      }
  
      public static Commandline getBaseSvnCommandLine( File workingDirectory, SvnScmProviderRepository repository )
      {
          Commandline cl = new Commandline();
  
          cl.setExecutable( "svn" );
          try
          {
              cl.addSystemEnvironment();
              cl.addEnvironment( "LC_MESSAGES", "C" );
          }
          catch ( Exception e )
          {
              //Do nothing
          }
  
          if ( workingDirectory != null )
          {
              cl.setWorkingDirectory( workingDirectory.getAbsolutePath() );
         }
 
         if ( !StringUtils.isEmpty( System.getProperty( "maven.scm.svn.config_directory" ) ) )
         {
             cl.createArg().setValue( "--config-dir" );
             cl.createArg().setValue( System.getProperty( "maven.scm.svn.config_directory" ) );
         }
         else if ( !StringUtils.isEmpty( SvnUtil.getSettings().getConfigDirectory() ) )
         {
             cl.createArg().setValue( "--config-dir" );
             cl.createArg().setValue( SvnUtil.getSettings().getConfigDirectory() );
         }
 
         boolean hasAuthInfo = false;
         if ( repository != null && !StringUtils.isEmpty( repository.getUser() ) )
         {
             hasAuthInfo = true;
             cl.createArg().setValue( "--username" );
             cl.createArg().setValue( repository.getUser() );
         }
 
         if ( repository != null && !StringUtils.isEmpty( repository.getPassword() ) )
         {
             hasAuthInfo = true;
             cl.createArg().setValue( "--password" );
             cl.createArg().setValue( repository.getPassword() );
         }
 
         // [by Lenik] don't overwrite existing auth cache by default.
         if ( hasAuthInfo && !SvnUtil.getSettings().isUseAuthCache() )
         {
             cl.createArg().setValue( "--no-auth-cache" );
         }
 
         if ( SvnUtil.getSettings().isUseNonInteractive() )
         {
             cl.createArg().setValue( "--non-interactive" );
         }
 
         if ( SvnUtil.getSettings().isTrustServerCert() )
         {
             cl.createArg().setValue( "--trust-server-cert" );
         }
 
         return cl;
     }
 
     public static int execute( Commandline cl, StreamConsumer consumer, CommandLineUtils.StringStreamConsumer stderr )
         throws CommandLineException
     {
         // SCM-482: force English resource bundle
         cl.addEnvironment( "LC_MESSAGES", "en" );
 
         int exitCode = CommandLineUtils.executeCommandLine( cl, consumer, stderr );
 
         exitCode = checkIfCleanUpIsNeeded( exitCode, cl, consumer, stderr );
 
         return exitCode;
     }
 
     public static int execute( Commandline cl, CommandLineUtils.StringStreamConsumer stdout,
                                CommandLineUtils.StringStreamConsumer stderr )
         throws CommandLineException
     {
         int exitCode = CommandLineUtils.executeCommandLine( cl, stdout, stderr );
 
         exitCode = checkIfCleanUpIsNeeded( exitCode, cl, stdout, stderr );
 
         return exitCode;
     }
 
     private static int checkIfCleanUpIsNeeded( int exitCode, Commandline cl, StreamConsumer consumer,
                                                CommandLineUtils.StringStreamConsumer stderr )
         throws CommandLineException
     {
         if ( exitCode != 0 && stderr.getOutput() != null && stderr.getOutput().indexOf( "'svn cleanup'" ) > 0
             && stderr.getOutput().indexOf( "'svn help cleanup'" ) > 0 )
         {
             if ( LOGGER.isInfoEnabled() )
             {
                 LOGGER.info( "Svn command failed due to some locks in working copy. We try to run a 'svn cleanup'." );
             }
 
             if ( executeCleanUp( cl.getWorkingDirectory(), consumer, stderr ) == 0 )
             {
                 exitCode = CommandLineUtils.executeCommandLine( cl, consumer, stderr );
             }
         }
         return exitCode;
     }
 
     public static int executeCleanUp( File workinDirectory, StreamConsumer stdout, StreamConsumer stderr )
         throws CommandLineException
     {
         Commandline cl = new Commandline();
 
         cl.setExecutable( "svn" );
 
         cl.setWorkingDirectory( workinDirectory.getAbsolutePath() );
 
         if ( LOGGER.isInfoEnabled() )
         {
             LOGGER.info( "Executing: " + SvnCommandLineUtils.cryptPassword( cl ) );
 
             if ( Os.isFamily( Os.FAMILY_WINDOWS ) )
             {
                 LOGGER.info( "Working directory: " + cl.getWorkingDirectory().getAbsolutePath() );
             }
         }
 
         return CommandLineUtils.executeCommandLine( cl, stdout, stderr );
     }
 
     public static String cryptPassword( Commandline cl )
     {
         String clString = cl.toString();
 
         final String passwordOpt = "--password";
         String quoteChar;
         String escapedQuoteChar;
         String cryptedPassword;
 
         int pos = clString.indexOf( passwordOpt );
 
         if ( pos > 0 )
         {
            if ( Os.isFamily( Os.FAMILY_WINDOWS ) )
            {
                 quoteChar = "\"";
                 escapedQuoteChar = "\"\"";
                 cryptedPassword = "*****";
            }
            else
            {
                quoteChar = "'";
                escapedQuoteChar = "'\"'\"'";
                cryptedPassword = "'*****'";
            }
 
            // Move pointer after password option
            pos += passwordOpt.length();
 
            // Skip quote after password option
            if ( clString.substring( pos,  pos + 1 ).equals( quoteChar ) )
            {
                pos++;
            }
 
            // Skip space after password option
            pos++;
 
             String beforePassword = clString.substring( 0, pos );
             String afterPassword = clString.substring( pos );
 
             if ( afterPassword.startsWith( quoteChar ) )
             {
                 pos = 1;
                 while ( afterPassword.indexOf( escapedQuoteChar, pos ) != -1 )
                 {
                     pos = afterPassword.indexOf( escapedQuoteChar, pos ) + escapedQuoteChar.length();
                 }
                 afterPassword = afterPassword.substring ( afterPassword.indexOf( quoteChar, pos )
                                                           + quoteChar.length() );
             }
             else
             {
                 // We assume that the password arg ist not the last one on the arg list
                 afterPassword = afterPassword.substring( afterPassword.indexOf( ' ' ) );
             }
 
             clString = beforePassword + cryptedPassword + afterPassword;
 
         }
 
         return clString;
     }
 }