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 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 965106 2010-07-17 16:44:18Z bentmann $

  */

 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 )

         throws AssemblyFormattingException

     {

         return format ( source, filter, lineEnding, configSource.getTemporaryRootDirectory() );

     }

     public File format( File source, boolean filter, String lineEnding, File tempRoot )

         throws AssemblyFormattingException

     {

         AssemblyFileUtils.verifyTempDirectoryAvailability( tempRoot, logger );

         File result = source;

         if ( filter )

             result = doFileFilter( source, tempRoot );

         String lineEndingChars = AssemblyFileUtils.getLineEndingCharacters( lineEnding );

         if ( lineEndingChars != null )

         {

             result = formatLineEndings( lineEndingChars, result, tempRoot );

         }

         return result;

     }

     private File doFileFilter( File source, File tempRoot )

         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, null, 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 );

         }

     }

 }