Function maybeAddHeaders

src/components/httpd.js:2198–2274

* Adds custom-specified headers for the given file to the given response, if * any such headers are specified. * * @param file * the file on the disk which is to be written * @param metadata * metadata about the incoming request * @param response * the Response to which any specified h

(file, metadata, response)

 *   if an error occurred while processing custom-specified headers
 */
function maybeAddHeaders(file, metadata, response)
{
  var name = file.leafName;
  if (name.charAt(name.length - 1) == HIDDEN_CHAR)
    name = name.substring(0, name.length - 1);

  var headerFile = file.parent;
  headerFile.append(name + HEADERS_SUFFIX);

  if (!headerFile.exists())
    return;

  const PR_RDONLY = 0x01;
  var fis = new FileInputStream(headerFile, PR_RDONLY, PERMS_READONLY,
                                Ci.nsIFileInputStream.CLOSE_ON_EOF);

  try
  {
    var lis = new ConverterInputStream(fis, "UTF-8", 1024, 0x0);
    lis.QueryInterface(Ci.nsIUnicharLineInputStream);

    var line = {value: ""};
    var more = lis.readLine(line);

    if (!more && line.value == "")
      return;


    // request line

    var status = line.value;
    if (status.indexOf("HTTP ") == 0)
    {
      status = status.substring(5);
      var space = status.indexOf(" ");
      var code, description;
      if (space < 0)
      {
        code = status;
        description = "";
      }
      else
      {
        code = status.substring(0, space);
        description = status.substring(space + 1, status.length);
      }
    
      response.setStatusLine(metadata.httpVersion, parseInt(code, 10), description);

      line.value = "";
      more = lis.readLine(line);
    }

    // headers
    while (more || line.value != "")
    {
      var header = line.value;
      var colon = header.indexOf(":");