/*
* Copyright 2009 the original author or authors.
*
* Licensed 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.
*/
package com.asual.lesscss;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
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.net.URL;
import org.mozilla.javascript.ErrorReporter;
import org.mozilla.javascript.EvaluatorException;
import com.yahoo.platform.yui.compressor.JavaScriptCompressor;
/**
* @author Rostislav Hristov
*/
public class ScriptResource extends Resource {
public ScriptResource(String path, Object resource,
String charset, boolean compress) {
super(path, resource, charset, compress);
}
public byte[] getContent() throws Exception {
if (content == null || (content != null && lastModified < getLastModified())) {
content = resource instanceof URL ? ResourceUtils.readUrl((URL) resource) : ResourceUtils.readFile((File) resource);
lastModified = getLastModified();
if (compress) {
compress();
}
}
return content;
}
private void compress() throws UnsupportedEncodingException, IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Reader in = new InputStreamReader(
new ByteArrayInputStream(
(new String(content))
.replaceFirst("^/\\*", "/*!")
.getBytes(charset)),
charset);
Writer out = new OutputStreamWriter(baos, charset);
JavaScriptCompressor compressor = new JavaScriptCompressor(in, new ErrorReporter() {
public void warning(String message, String sourceName,
int line, String lineSource, int lineOffset) {
logger.error("message: " + message + (lineSource != null ? ", line: " + line + ", column: " + lineOffset + ", source: " + lineSource : ""));
}
public void error(String message, String sourceName,
int line, String lineSource, int lineOffset) {
logger.error("message: " + message + (lineSource != null ? ", line: " + line + ", column: " + lineOffset + ", source: " + lineSource : ""));
}
public EvaluatorException runtimeError(String message, String sourceName,
int line, String lineSource, int lineOffset) {
error(message, sourceName, line, lineSource, lineOffset);
return new EvaluatorException(message);
}
});
in.close();
compressor.compress(out, -1, false, false, true, false);
out.flush();
content = baos.toByteArray();
out.close();
}
}