package org.apache.maven.plugins.shade.resource;
/*
* 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.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.jar.JarEntry;
import java.util.jar.JarOutputStream;
import java.util.regex.Pattern;
import org.apache.maven.plugins.shade.relocation.Relocator;
import org.codehaus.plexus.util.IOUtil;
/**
* An appending transformer for resource bundles
*
* @author Robert Scholte
* @since 3.0.0
*/
public class ResourceBundleAppendingTransformer implements ResourceTransformer
{
private Map<String, ByteArrayOutputStream> dataMap = new HashMap<String, ByteArrayOutputStream>();
private Pattern resourceBundlePattern;
/**
* the base name of the resource bundle, a fully qualified class name
*/
public void setBasename( String basename )
{
resourceBundlePattern = Pattern.compile( basename + "(_[a-zA-Z]+){0,3}\\.properties" );
}
public boolean canTransformResource( String r )
{
if ( resourceBundlePattern != null && resourceBundlePattern.matcher( r ).matches() )
{
return true;
}
return false;
}
public void processResource( String resource, InputStream is, List<Relocator> relocators )
throws IOException
{
ByteArrayOutputStream data = dataMap.get( resource );
if ( data == null )
{
data = new ByteArrayOutputStream();
dataMap.put( resource, data );
}
IOUtil.copy( is, data );
data.write( '\n' );
}
public boolean hasTransformedResource()
{
return !dataMap.isEmpty();
}
public void modifyOutputStream( JarOutputStream jos )
throws IOException
{
for ( Map.Entry<String, ByteArrayOutputStream> dataEntry : dataMap.entrySet() )
{
jos.putNextEntry( new JarEntry( dataEntry.getKey() ) );
IOUtil.copy( new ByteArrayInputStream( dataEntry.getValue().toByteArray() ), jos );
dataEntry.getValue().reset();
}
}
}