/*
* Copyright 2009 Google Inc.
*
* 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.google.reducisaurus.servlets;
import com.google.reducisaurus.JsCompressor;
import org.mozilla.javascript.EvaluatorException;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
@SuppressWarnings("serial")
public class JsServlet extends BaseServlet {
private static final String MIME_TYPE_JAVASCRIPT =
"application/x-javascript; charset=utf-8";
@Override
protected final Response process(HttpServletResponse resp, StringReader jssr)
throws IOException {
final StringWriter writer = new StringWriter();
final ErrorCollector errorCollector = new ErrorCollector();
boolean cacheable = true;
try {
resp.setContentType(MIME_TYPE_JAVASCRIPT);
new JsCompressor().compress(jssr, writer, errorCollector);
} catch (EvaluatorException ee) {
cacheable = false;
resp.setStatus(404);
resp.setContentType("text/plain");
writer.write("Errors:\n");
for (String i : errorCollector.getErrors()) {
writer.write(i + "\n");
}
}
return Response.of(cacheable, writer.toString());
}
@Override
protected final void render(final HttpServletResponse resp,
final String response) throws IOException {
resp.setContentType(MIME_TYPE_JAVASCRIPT);
resp.getWriter().write(response);
}
}