package org.apache.maven.plugin.assembly.format;
   
   /*
    * 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.plugin.assembly.AssemblerConfigurationSource;
  import org.apache.maven.plugin.assembly.utils.AssemblyFileUtils;
  import org.apache.maven.shared.filtering.MavenFilteringException;
  import org.codehaus.plexus.logging.Logger;
  import org.codehaus.plexus.util.FileUtils;
  import org.codehaus.plexus.util.IOUtil;
  import org.codehaus.plexus.util.ReaderFactory;
  import org.codehaus.plexus.util.StringUtils;
  
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.FileReader;
  import java.io.IOException;
  import java.io.Reader;
  import java.util.Locale;
  
  /**
   * @version $Id: FileFormatter.java 1163853 2011-08-31 22:42:32Z jdcasey $
   */
  public class FileFormatter
  {
  
      private final Logger logger;
  
      private final AssemblerConfigurationSource configSource;
  
      public FileFormatter( AssemblerConfigurationSource configSource, Logger logger )
      {
          this.configSource = configSource;
          this.logger = logger;
      }
  
      public File format( File source, boolean filter, String lineEnding, String encoding )
          throws AssemblyFormattingException
      {
          return format ( source, filter, lineEnding, configSource.getTemporaryRootDirectory(), encoding );
      }
  
      public File format( File source, boolean filter, String lineEnding, File tempRoot, String encoding )
          throws AssemblyFormattingException
      {
          AssemblyFileUtils.verifyTempDirectoryAvailability( tempRoot, logger );
  
          File result = source;
          
          if ( StringUtils.isEmpty( encoding ) && filter )
          {
              logger.warn(
                             "File encoding has not been set, using platform encoding " + ReaderFactory.FILE_ENCODING
                                 + ", i.e. build is platform dependent!" );
          }
  
          if ( filter )
              result = doFileFilter( source, tempRoot, encoding );
  
          String lineEndingChars = AssemblyFileUtils.getLineEndingCharacters( lineEnding );
          if ( lineEndingChars != null )
          {
              result = formatLineEndings( lineEndingChars, result, tempRoot );
          }
  
          return result;
      }
  
      private File doFileFilter( File source, File tempRoot, String encoding )
          throws AssemblyFormattingException
      {
          try
          {
              File target = FileUtils.createTempFile( source.getName() + ".", ".filtered", tempRoot );
  
              //@todo this test can be improved
              boolean isPropertiesFile = source.getName().toLowerCase( Locale.ENGLISH ).endsWith( ".properties" );
  
              configSource.getMavenFileFilter().copyFile( source, target, true, configSource.getProject(),
                      configSource.getFilters(), isPropertiesFile, encoding, configSource.getMavenSession() );
  
              return target;
         }
         catch (MavenFilteringException e)
         {
             throw new AssemblyFormattingException( "Error filtering file '" + source + "': " + e.getMessage(), e );
         }
     }
 
     private File formatLineEndings( String lineEndingChars, File source, File tempRoot )
         throws AssemblyFormattingException
     {
         Reader contentReader = null;
         try
         {
             contentReader = new FileReader( source );
 
             File target = FileUtils.createTempFile( source.getName() + ".", ".formatted", tempRoot );
 
             AssemblyFileUtils.convertLineEndings( contentReader, target, lineEndingChars );
 
             return target;
         }
         catch ( FileNotFoundException e )
         {
             throw new AssemblyFormattingException( "File to filter not found: " + e.getMessage(), e );
         }
         catch ( IOException e )
         {
             throw new AssemblyFormattingException( "Error line formatting file '" + source + "': " + e.getMessage(), e );
         }
         finally
         {
             IOUtil.close( contentReader );
         }
     }
 }