package org.apache.maven.project.path;
   
   /*
    * 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.model.Build;
  import org.apache.maven.model.Model;
  import org.apache.maven.model.Reporting;
  import org.apache.maven.model.Resource;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  
  /**
   * Default implementation of {@link PathTranslator}.
   */
  public class DefaultPathTranslator
      implements PathTranslator
  {
      private static final String[] BASEDIR_EXPRESSIONS = {
          "${basedir}",
          "${pom.basedir}",
          "${project.basedir}"
      };
  
      public void alignToBaseDirectory( Model model, File basedir )
      {
          if ( basedir == null )
          {
              return;
          }
  
          Build build = model.getBuild();
  
          if ( build != null )
          {
              build.setDirectory( alignToBaseDirectory( build.getDirectory(), basedir ) );
  
              build.setSourceDirectory( alignToBaseDirectory( build.getSourceDirectory(), basedir ) );
  
              build.setTestSourceDirectory( alignToBaseDirectory( build.getTestSourceDirectory(), basedir ) );
  
              // TODO: MNG-3731
  //            build.setScriptSourceDirectory( alignToBaseDirectory( build.getScriptSourceDirectory(), basedir ) );
  
              for ( Iterator i = build.getResources().iterator(); i.hasNext(); )
              {
                  Resource resource = (Resource) i.next();
  
                  resource.setDirectory( alignToBaseDirectory( resource.getDirectory(), basedir ) );
              }
  
              for ( Iterator i = build.getTestResources().iterator(); i.hasNext(); )
              {
                  Resource resource = (Resource) i.next();
  
                  resource.setDirectory( alignToBaseDirectory( resource.getDirectory(), basedir ) );
              }
  
              if ( build.getFilters() != null )
              {
                  List filters = new ArrayList();
                  for ( Iterator i = build.getFilters().iterator(); i.hasNext(); )
                  {
                      String filter = (String) i.next();
  
                      filters.add( alignToBaseDirectory( filter, basedir ) );
                  }
                  build.setFilters( filters );
              }
  
              build.setOutputDirectory( alignToBaseDirectory( build.getOutputDirectory(), basedir ) );
  
              build.setTestOutputDirectory( alignToBaseDirectory( build.getTestOutputDirectory(), basedir ) );
          }
  
          Reporting reporting = model.getReporting();
  
          if ( reporting != null )
          {
              reporting.setOutputDirectory( alignToBaseDirectory( reporting.getOutputDirectory(), basedir ) );
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public String alignToBaseDirectory( String path, File basedir )
     {
         if ( basedir == null )
         {
             return path;
         }
 
         if ( path == null )
         {
             return null;
         }
 
         String s = stripBasedirToken( path );
 
         File file = new File( s );
         if ( file.isAbsolute() )
         {
             // path was already absolute, just normalize file separator and we're done
             s = file.getPath();
         }
         else if ( file.getPath().startsWith( File.separator ) )
         {
             // drive-relative Windows path, don't align with project directory but with drive root
             s = file.getAbsolutePath();
         }
         else
         {
             // an ordinary relative path, align with project directory
             s = new File( new File( basedir, s ).toURI().normalize() ).getAbsolutePath();
         }
 
         return s;
     }
 
     private String stripBasedirToken( String s )
     {
         if ( s != null )
         {
             String basedirExpr = null;
             for ( int i = 0; i < BASEDIR_EXPRESSIONS.length; i++ )
             {
                 basedirExpr = BASEDIR_EXPRESSIONS[i];
                 if ( s.startsWith( basedirExpr ) )
                 {
                     break;
                 }
                 else
                 {
                     basedirExpr = null;
                 }
             }
 
             if ( basedirExpr != null )
             {
                 if ( s.length() > basedirExpr.length() )
                 {
                     // Take out basedir expression and the leading slash
                     s = chopLeadingFileSeparator( s.substring( basedirExpr.length() ) );
                 }
                 else
                 {
                     s = ".";
                 }
             }
         }
 
         return s;
     }
 
     /**
      * Removes the leading directory separator from the specified filesystem path (if any). For platform-independent
      * behavior, this method accepts both the forward slash and the backward slash as separator.
      *
      * @param path The filesystem path, may be <code>null</code>.
      * @return The altered filesystem path or <code>null</code> if the input path was <code>null</code>.
      */
     private String chopLeadingFileSeparator( String path )
     {
         if ( path != null )
         {
             if ( path.startsWith( "/" ) || path.startsWith( "\\" ) )
             {
                 path = path.substring( 1 );
             }
         }
         return path;
     }
 
     /**
      * {@inheritDoc}
      */
     public void unalignFromBaseDirectory( Model model, File basedir )
     {
         if ( basedir == null )
         {
             return;
         }
 
         Build build = model.getBuild();
 
         if ( build != null )
         {
             build.setDirectory( unalignFromBaseDirectory( build.getDirectory(), basedir ) );
 
             build.setSourceDirectory( unalignFromBaseDirectory( build.getSourceDirectory(), basedir ) );
 
             build.setTestSourceDirectory( unalignFromBaseDirectory( build.getTestSourceDirectory(), basedir ) );
 
             build.setScriptSourceDirectory( unalignFromBaseDirectory( build.getScriptSourceDirectory(), basedir ) );
 
             for ( Iterator i = build.getResources().iterator(); i.hasNext(); )
             {
                 Resource resource = (Resource) i.next();
 
                 resource.setDirectory( unalignFromBaseDirectory( resource.getDirectory(), basedir ) );
             }
 
             for ( Iterator i = build.getTestResources().iterator(); i.hasNext(); )
             {
                 Resource resource = (Resource) i.next();
 
                 resource.setDirectory( unalignFromBaseDirectory( resource.getDirectory(), basedir ) );
             }
 
             if ( build.getFilters() != null )
             {
                 List filters = new ArrayList();
                 for ( Iterator i = build.getFilters().iterator(); i.hasNext(); )
                 {
                     String filter = (String) i.next();
 
                     filters.add( unalignFromBaseDirectory( filter, basedir ) );
                 }
                 build.setFilters( filters );
             }
 
             build.setOutputDirectory( unalignFromBaseDirectory( build.getOutputDirectory(), basedir ) );
 
             build.setTestOutputDirectory( unalignFromBaseDirectory( build.getTestOutputDirectory(), basedir ) );
         }
 
         Reporting reporting = model.getReporting();
 
         if ( reporting != null )
         {
             reporting.setOutputDirectory( unalignFromBaseDirectory( reporting.getOutputDirectory(), basedir ) );
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public String unalignFromBaseDirectory( String path, File basedir )
     {
         if ( basedir == null )
         {
             return path;
         }
 
         if ( path == null )
         {
             return null;
         }
 
         path = path.trim();
 
         String base = basedir.getAbsolutePath();
         if ( path.startsWith( base ) )
         {
             path = chopLeadingFileSeparator( path.substring( base.length() ) );
         }
 
         if ( !new File( path ).isAbsolute() )
         {
             path = path.replace( '\\', '/' );
         }
 
         return path;
     }
 
 }