/* 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;

}