content: /*
   * Copyright (C) 2015 The Android Open Source Project
   *
   * 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.android.ahat;
  
  import com.google.common.io.ByteStreams;
  import com.sun.net.httpserver.HttpHandler;
  import com.sun.net.httpserver.HttpExchange;
  import java.io.InputStream;
  import java.io.IOException;
  import java.io.OutputStream;
  import java.io.PrintStream;
  
  // Handler that returns a static file included in ahat.jar.
  class StaticHandler implements HttpHandler {
    private String mResourceName;
    private String mContentType;
  
    public StaticHandler(String resourceName, String contentType) {
      mResourceName = resourceName;
      mContentType = contentType;
    }
  
    @Override
    public void handle(HttpExchange exchange) throws IOException {
      ClassLoader loader = StaticHandler.class.getClassLoader();
      InputStream is = loader.getResourceAsStream(mResourceName);
      if (is == null) {
        exchange.getResponseHeaders().add("Content-Type", "text/html");
        exchange.sendResponseHeaders(404, 0);
        PrintStream ps = new PrintStream(exchange.getResponseBody());
        HtmlDoc doc = new HtmlDoc(ps, DocString.text("ahat"), DocString.uri("style.css"));
        doc.big(DocString.text("Resource not found."));
        doc.close();
      } else {
        exchange.getResponseHeaders().add("Content-Type", mContentType);
        exchange.sendResponseHeaders(200, 0);
        OutputStream os = exchange.getResponseBody();
        ByteStreams.copy(is, os);
        os.close();
      }
    }
  }
  