DXR will be turned off on Tuesday, December 29th. It will redirect to Searchfox.
See the announcement on Discourse.

DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Line Code
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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupportsImpl.h"

#include "mozilla/Encoding.h"

const mozilla::Encoding*
nsHtml5MetaScanner::sniff(nsHtml5ByteReadable* bytes)
{
  readable = bytes;
  stateLoop(stateSave);
  readable = nullptr;
  return mEncoding;
}

bool
nsHtml5MetaScanner::tryCharset(nsHtml5String charset)
{
  // This code needs to stay in sync with
  // nsHtml5StreamParser::internalEncodingDeclaration. Unfortunately, the
  // trickery with member fields here leads to some copy-paste reuse. :-(
  nsAutoCString label;
  nsString charset16; // Not Auto, because using it to hold nsStringBuffer*
  charset.ToString(charset16);
  CopyUTF16toUTF8(charset16, label);
  const mozilla::Encoding* encoding = Encoding::ForLabel(label);
  if (!encoding) {
    return false;
  }
  if (encoding == UTF_16BE_ENCODING || encoding == UTF_16LE_ENCODING) {
    mEncoding = UTF_8_ENCODING;
    return true;
  }
  if (encoding == X_USER_DEFINED_ENCODING) {
    // WebKit/Blink hack for Indian and Armenian legacy sites
    mEncoding = WINDOWS_1252_ENCODING;
    return true;
  }
  mEncoding = encoding;
  return true;
}