package org.codehaus.mojo.natives.javah;
   
   /*
    * The MIT License
    *
    * Copyright (c) 2004, The Codehaus
    *
    * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
    * associated documentation files (the "Software"), to deal in the Software without restriction,
   * including without limitation the rights to use, copy, modify, merge, publish, distribute,
   * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all copies or
   * substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
   * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
   * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  import org.codehaus.mojo.natives.NativeBuildException;
  import org.codehaus.mojo.natives.util.CommandLineUtil;
  import org.codehaus.plexus.util.cli.Commandline;
  
  import java.io.File;
  
  /**
   * Sun's javah compatible implementation
   */
  
  public class JavahExecutable
      extends AbstractJavah
  {
      public JavahExecutable()
      {
      }
  
      public void compile( JavahConfiguration config )
          throws NativeBuildException
      {
          Commandline cl = this.createJavahCommand( config );
  
          CommandLineUtil.execute( cl, this.getLogger() );
      }
  
      protected Commandline createJavahCommand( JavahConfiguration config )
          throws NativeBuildException
      {
          this.validateConfiguration( config );
  
          Commandline cl = new Commandline();
  
          if ( config.getWorkingDirectory() != null )
          {
              cl.setWorkingDirectory( config.getWorkingDirectory().getPath() );
          }
  
          cl.setExecutable( this.getJavaHExecutable( config ) );
  
          if ( config.getFileName() != null && config.getFileName().length() > 0 )
          {
              File outputFile = new File( config.getOutputDirectory(), config.getFileName() );
              cl.createArg().setValue( "-o" );
              cl.createArg().setFile( outputFile );
          }
          else
          {
              if ( config.getOutputDirectory() != null )
              {
                  cl.createArg().setValue( "-d" );
                  cl.createArg().setFile( config.getOutputDirectory() );
              }
          }
  
          String[] classPaths = config.getClassPaths();
  
          StringBuffer classPathBuffer = new StringBuffer();
  
          for ( int i = 0; i < classPaths.length; ++i )
          {
              classPathBuffer.append( classPaths[i] );
              if ( i != classPaths.length - 1 )
              {
                  classPathBuffer.append( File.pathSeparatorChar );
              }
          }
  
          if ( config.getUseEnvClasspath() )
          {
              cl.addEnvironment( "CLASSPATH", classPathBuffer.toString() );
          }
          else
          {
              cl.createArg().setValue( "-classpath" );
  
              cl.createArg().setValue( classPathBuffer.toString() );
         }
 
         if ( config.getVerbose() )
         {
             cl.createArg().setValue( "-verbose" );
         }
 
         cl.addArguments( config.getClassNames() );
 
         return cl;
     }
 
     private void validateConfiguration( JavahConfiguration config )
         throws NativeBuildException
     {
         if ( config.getClassPaths() == null || config.getClassPaths().length == 0 )
         {
             throw new NativeBuildException( "javah classpaths can not be empty." );
         }
 
         if ( config.getOutputDirectory() == null )
         {
             throw new NativeBuildException( "javah destDir can not be empty." );
         }
 
         if ( !config.getOutputDirectory().exists() )
         {
             config.getOutputDirectory().mkdirs();
         }
 
         if ( config.getClassNames() == null || config.getClassNames().length == 0 )
         {
             throw new NativeBuildException( "javah: java classes can not be empty." );
         }
 
     }
 
     /**
      * @return
      */
     protected String getJavaHExecutable( JavahConfiguration config )
     {
         String path = "javah";
 
         if ( config.getJavahPath() != null )
         {
             path = config.getJavahPath().getAbsolutePath();
         }
 
         return path;
     }
 
 }