Java tutorial
/* * JBoss, Home of Professional Open Source * Copyright 2010, Red Hat, Inc. and individual contributors * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.richfaces.cdk.resource.writer.impl; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.io.Reader; import java.io.Writer; import java.nio.charset.Charset; import org.richfaces.cdk.resource.writer.ResourceProcessor; import com.google.common.io.ByteStreams; import com.google.common.io.Closeables; import com.google.common.io.InputSupplier; import com.google.common.io.OutputSupplier; /** * @author Nick Belaevski * */ public class JavaScriptPackagingProcessor implements ResourceProcessor { private Charset charset; public JavaScriptPackagingProcessor(Charset charset) { this.charset = charset; } @Override public boolean isSupportedFile(String name) { return name.endsWith(".js"); } @Override public void process(String resourceName, InputSupplier<? extends InputStream> in, OutputSupplier<? extends OutputStream> out, boolean closeAtFinish) throws IOException { process(resourceName, in.getInput(), out.getOutput(), closeAtFinish); } @Override public void process(String resourceName, InputStream in, OutputStream out, boolean closeAtFinish) throws IOException { Reader reader = null; Writer writer = null; try { reader = new InputStreamReader(in, charset); writer = new OutputStreamWriter(out, charset); ByteStreams.copy(in, out); if (!closeAtFinish) { // add semicolon to satisfy end of context of each script when packing files writer.write(";"); writer.flush(); } } finally { Closeables.closeQuietly(reader); if (closeAtFinish) { Closeables.closeQuietly(writer); } else { writer.flush(); } } } }