HttpFileResponse.java

/**
 * Sahi - Web Automation and Test Tool
 *
 * Copyright  2006  V Narayan Raman
 *
 * 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 net.sf.sahi.response;

import net.sf.sahi.config.Configuration;
import net.sf.sahi.util.Utils;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;

/**
 * User: nraman Date: May 15, 2005 Time: 10:14:34 PM
 */
public class HttpFileResponse extends HttpResponse {

  private String fileName;
  boolean addCacheHeader = false;

  public HttpFileResponse(final String fileName, final Properties substitutions, final boolean addCacheHeader, final boolean cacheFileInMemory) {
    this.fileName = fileName;
    byte[] bytes;
    if (cacheFileInMemory && !Configuration.isDevMode()) {
      bytes = Utils.readCachedFile(fileName);
    } else {
      bytes = Utils.readFile(fileName);
    }
    setData(bytes);
    if (substitutions != null) {
      setData(Utils.substitute(new String(data()), substitutions).getBytes());
    }
    this.addCacheHeader = addCacheHeader;
    setHeaders();
  }

  public HttpFileResponse(final String fileName) {
    this(fileName, null, false, false);
  }

  private void setHeaders() {
    setFirstLine("HTTP/1.1 200 OK");
    removeHeader("Content-Type");
    setHeader("Content-Type", MimeType.getMimeTypeOfFile(fileName));
    if (addCacheHeader) {
      setHeader("Expires", formatForExpiresHeader(new Date(
        System.currentTimeMillis() + 10 * 60 * 1000))); // 10 minutes
    }
    setHeader("Content-Length", "" + data().length);
    setRawHeaders(getRebuiltHeaderBytes());
  }

  static String formatForExpiresHeader(Date date) {
    return new SimpleDateFormat("EEE, dd MMM yyyy hh:mm:ss z").format(date);
  }
}