package org.codehaus.mojo.gwt.shell;
/*
* 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.FileWriter;
import java.io.IOException;
import java.util.List;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang.SystemUtils;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.model.Resource;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.codehaus.plexus.util.cli.StreamConsumer;
/**
* Creates CSS interfaces for css files.
* Will use the utility tool provided in gwt sdk which create a corresponding Java interface for accessing
* the classnames used in the file.
* @goal css
* @author Stale Undheim <undheim@corporater.com>
* @author olamy
* @since 2.1.0-1
*/
public class CSSMojo
extends AbstractGwtShellMojo
{
/**
* List of resourceBundles that should be used to generate CSS interfaces.
*
* @parameter
*/
private String[] cssFiles;
/**
* Shortcut for a single cssFile
*
* @parameter
*/
private String cssFile;
public void doExecute()
throws MojoExecutionException, MojoFailureException
{
setup();
boolean generated = false;
// java -cp gwt-dev.jar:gwt-user.jar
// com.google.gwt.resources.css.InterfaceGenerator -standalone -typeName some.package.MyCssResource -css
// input.css
if ( cssFiles != null )
{
for ( String file : cssFiles )
{
final String typeName = FilenameUtils.separatorsToSystem( file ).
substring( 0, file.lastIndexOf( '.' ) ).replace( File.separatorChar, '.' );
final File javaOutput =
new File( getGenerateDirectory(), typeName.replace( '.', File.separatorChar ) + ".java" );
final StringBuilder content = new StringBuilder();
out = new StreamConsumer()
{
public void consumeLine( String line )
{
content.append( line ).append( SystemUtils.LINE_SEPARATOR );
}
};
for ( Resource resource : (List<Resource>) getProject().getResources() )
{
final File candidate = new File( resource.getDirectory(), file );
if ( candidate.exists() )
{
getLog().info( "Generating " + javaOutput + " with typeName " + typeName );
ensureTargetPackageExists( getGenerateDirectory(), typeName );
try
{
new JavaCommand( "com.google.gwt.resources.css.InterfaceGenerator" )
.withinScope( Artifact.SCOPE_COMPILE )
.arg( "-standalone" )
.arg( "-typeName" )
.arg( typeName )
.arg( "-css" )
.arg( candidate.getAbsolutePath() )
.withinClasspath( getGwtDevJar() , getGwtUserJar() )
.execute();
final FileWriter outputWriter = new FileWriter( javaOutput );
outputWriter.write( content.toString() );
outputWriter.close();
}
catch ( IOException e )
{
throw new MojoExecutionException( "Failed to write to file: " + javaOutput );
}
generated = true;
break;
}
}
if ( content.length() == 0 )
{
throw new MojoExecutionException( "cannot generate java source from file " + file + "." );
}
}
}
if ( generated )
{
getLog().debug( "add compile source root " + getGenerateDirectory() );
addCompileSourceRoot( getGenerateDirectory() );
}
}
private void setup()
throws MojoExecutionException
{
if ( cssFiles == null && cssFile != null )
{
cssFiles = new String[] { cssFile };
}
}
private void ensureTargetPackageExists( File generateDirectory, String targetName )
{
targetName = targetName.contains( "." ) ? targetName.substring( 0, targetName.lastIndexOf( '.' ) ) : targetName;
String targetPackage = targetName.replace( '.', File.separatorChar );
getLog().debug( "ensureTargetPackageExists, targetName : " + targetName + ", targetPackage : " + targetPackage );
File targetPackageDirectory = new File( generateDirectory, targetPackage );
if ( !targetPackageDirectory.exists() )
{
targetPackageDirectory.mkdirs();
}
}
}