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org.apache.maven.shared.filtering.DefaultMavenFileFilter Maven / Gradle / Ivy
A component to assist in filtering of resource files with properties from a Maven project.
package org.apache.maven.shared.filtering;
/*
* 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.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.util.List;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.project.MavenProject;
import org.apache.maven.shared.utils.StringUtils;
import org.apache.maven.shared.utils.io.FileUtils;
import org.apache.maven.shared.utils.io.FileUtils.FilterWrapper;
import org.apache.maven.shared.utils.io.IOUtil;
import org.codehaus.plexus.component.annotations.Component;
import org.codehaus.plexus.component.annotations.Requirement;
import org.sonatype.plexus.build.incremental.BuildContext;
/**
* @author Olivier Lamy
*/
@Component( role = org.apache.maven.shared.filtering.MavenFileFilter.class, hint = "default" )
public class DefaultMavenFileFilter
extends BaseFilter
implements MavenFileFilter
{
@Requirement
private MavenReaderFilter readerFilter;
@Requirement
private BuildContext buildContext;
/** {@inheritDoc} */
public void copyFile( File from, File to, boolean filtering, MavenProject mavenProject, List filters,
boolean escapedBackslashesInFilePath, String encoding, MavenSession mavenSession )
throws MavenFilteringException
{
MavenResourcesExecution mre = new MavenResourcesExecution();
mre.setMavenProject( mavenProject );
mre.setFileFilters( filters );
mre.setEscapeWindowsPaths( escapedBackslashesInFilePath );
mre.setMavenSession( mavenSession );
mre.setInjectProjectBuildFilters( true );
List filterWrappers = getDefaultFilterWrappers( mre );
copyFile( from, to, filtering, filterWrappers, encoding );
}
/** {@inheritDoc} */
public void copyFile( MavenFileFilterRequest mavenFileFilterRequest )
throws MavenFilteringException
{
List filterWrappers = getDefaultFilterWrappers( mavenFileFilterRequest );
copyFile( mavenFileFilterRequest.getFrom(), mavenFileFilterRequest.getTo(),
mavenFileFilterRequest.isFiltering(), filterWrappers, mavenFileFilterRequest.getEncoding() );
}
/** {@inheritDoc} */
public void copyFile( File from, File to, boolean filtering, List filterWrappers,
String encoding )
throws MavenFilteringException
{
// overwrite forced to false to preserve backward comp
copyFile( from, to, filtering, filterWrappers, encoding, false );
}
/** {@inheritDoc} */
public void copyFile( File from, File to, boolean filtering, List filterWrappers,
String encoding, boolean overwrite )
throws MavenFilteringException
{
try
{
if ( filtering )
{
if ( getLogger().isDebugEnabled() )
{
getLogger().debug( "filtering " + from.getPath() + " to " + to.getPath() );
}
filterFile( from, to, encoding, filterWrappers );
}
else
{
if ( getLogger().isDebugEnabled() )
{
getLogger().debug( "copy " + from.getPath() + " to " + to.getPath() );
}
FileUtils.copyFile( from, to, encoding, new FileUtils.FilterWrapper[0], overwrite );
}
buildContext.refresh( to );
}
catch ( IOException e )
{
throw new MavenFilteringException( e.getMessage(), e );
}
}
private void filterFile( @Nonnull File from, @Nonnull File to, @Nullable String encoding,
@Nullable List wrappers )
throws IOException, MavenFilteringException
{
if ( wrappers != null && wrappers.size() > 0 )
{
Reader fileReader = null;
Writer fileWriter = null;
try
{
fileReader = getFileReader( encoding, from );
fileWriter = getFileWriter( encoding, to );
Reader src = readerFilter.filter( fileReader, true, wrappers );
IOUtil.copy( src, fileWriter );
}
finally
{
IOUtil.close( fileReader );
IOUtil.close( fileWriter );
}
}
else
{
if ( to.lastModified() < from.lastModified() )
{
FileUtils.copyFile( from, to );
}
}
}
private Writer getFileWriter( String encoding, File to )
throws IOException
{
if ( StringUtils.isEmpty( encoding ) )
{
return new FileWriter( to );
}
else
{
FileOutputStream outstream = new FileOutputStream( to );
return new OutputStreamWriter( outstream, encoding );
}
}
private Reader getFileReader( String encoding, File from )
throws FileNotFoundException, UnsupportedEncodingException
{
// buffer so it isn't reading a byte at a time!
if ( StringUtils.isEmpty( encoding ) )
{
return new BufferedReader( new FileReader( from ) );
}
else
{
FileInputStream instream = new FileInputStream( from );
return new BufferedReader( new InputStreamReader( instream, encoding ) );
}
}
}
