/*
* Copyright (c) 2008. All rights reserved.
*/
package ro.isdc.wro.extensions.processor.js;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.dojotoolkit.shrinksafe.Compressor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ro.isdc.wro.model.group.processor.Minimize;
import ro.isdc.wro.model.resource.Resource;
import ro.isdc.wro.model.resource.ResourceType;
import ro.isdc.wro.model.resource.SupportedResourceType;
import ro.isdc.wro.model.resource.processor.ResourcePostProcessor;
import ro.isdc.wro.model.resource.processor.ResourcePreProcessor;
import ro.isdc.wro.util.StopWatch;
import com.github.lltyk.rhino17r1.Context;
/**
* Compresses javascript code using compressor implemented by Dojo Shrinksafe utility.
*
* @author Alex Objelean
* @created Created on Dec 4, 2008
*/
@Minimize
@SupportedResourceType(ResourceType.JS)
public class DojoShrinksafeCompressorProcessor
implements ResourcePostProcessor, ResourcePreProcessor {
private static final Logger LOG = LoggerFactory.getLogger(DojoShrinksafeCompressorProcessor.class);
public static final String ALIAS = "dojoShrinksafe";
/**
* {@inheritDoc}
*/
public void process(final Reader reader, final Writer writer)
throws IOException {
process(null, reader, writer);
}
/**
* {@inheritDoc}
*/
public void process(final Resource resource, final Reader reader, final Writer writer)
throws IOException {
final StopWatch watch = new StopWatch();
watch.start("pack");
//initialize rhino context
Context.enter();
try {
final String script = IOUtils.toString(reader);
final String stripConsole = null; //normal, warn, all
LOG.debug("compressing script: {}", StringUtils.abbreviate(script, 40));
final String out = Compressor.compressScript(script, 0, 0, stripConsole);
writer.write(out);
} finally {
Context.exit();
reader.close();
writer.close();
watch.stop();
LOG.debug(watch.prettyPrint());
}
}
}