package de.matrixweb.smaller.browserify;
import java.io.IOException;
import java.util.Map;
import de.matrixweb.nodejs.NodeJsExecutor;
import de.matrixweb.smaller.common.SmallerException;
import de.matrixweb.smaller.resource.MergingProcessor;
import de.matrixweb.smaller.resource.Resource;
import de.matrixweb.smaller.resource.Type;
import de.matrixweb.vfs.VFS;
import de.matrixweb.vfs.VFile;
/**
*
*/
public class BrowserifyProcessor implements MergingProcessor {
private final String version;
private NodeJsExecutor node;
/**
*
*/
public BrowserifyProcessor() {
this("3.24.9");
}
/**
* @param version
*/
public BrowserifyProcessor(final String version) {
this.version = version;
}
/**
* @see de.matrixweb.smaller.resource.Processor#supportsType(de.matrixweb.smaller.resource.Type)
*/
@Override
public boolean supportsType(final Type type) {
return type == Type.JS;
}
/**
* @see de.matrixweb.smaller.resource.Processor#execute(de.matrixweb.vfs.VFS,
* de.matrixweb.smaller.resource.Resource, java.util.Map)
*/
@Override
public Resource execute(final VFS vfs, final Resource resource,
final Map<String, Object> options) throws IOException {
if (this.node == null) {
try {
this.node = new NodeJsExecutor();
this.node.setModule(getClass(), "browserify-" + this.version,
"browserify.js");
} catch (final IOException e) {
this.node = null;
throw new SmallerException("Failed to setup node for browserify", e);
}
}
final String outfile = this.node.run(vfs,
resource != null ? resource.getPath() : null, options);
if (outfile != null) {
final VFile file = vfs.find('/' + outfile);
if (!file.exists()) {
throw new SmallerException("BrowserifyProcessor result does not exists");
}
}
return resource == null || outfile == null ? resource : resource
.getResolver().resolve('/' + outfile);
}
/**
* @see de.matrixweb.smaller.resource.Processor#dispose()
*/
@Override
public void dispose() {
if (this.node != null) {
this.node.dispose();
this.node = null;
}
}
}