intl/unicharutil/util/GreekCasing.h
author Raymond Etornam Agbeame(:retornam) <mozbugs.retornam@gmail.com>
Thu, 22 Jan 2015 16:02:30 -0800
changeset 225501 f4ddeae5b6c4b5bfda50066386133e4346697e94
parent 200143 5fb5adcc3835685c8ec779c35301a3f0251b1275
child 326575 422af49b7ae8cb9218457535c8b0d3f4bec5f467
permissions -rw-r--r--
Bug 1109235 - remove nsIStreamCipher and implementation r=keeler

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

#ifndef GreekCasing_h_
#define GreekCasing_h_

#include <stdint.h>
#include "mozilla/Attributes.h"

namespace mozilla {

class GreekCasing {
  // When doing an Uppercase transform in Greek, we need to keep track of the
  // current state while iterating through the string, to recognize and process
  // diphthongs correctly. For clarity, we define a state for each vowel and
  // each vowel with accent, although a few of these do not actually need any
  // special treatment and could be folded into kStart.
private:
  enum GreekStates {
    kStart,
    kAlpha,
    kEpsilon,
    kEta,
    kIota,
    kOmicron,
    kUpsilon,
    kOmega,
    kAlphaAcc,
    kEpsilonAcc,
    kEtaAcc,
    kIotaAcc,
    kOmicronAcc,
    kUpsilonAcc,
    kOmegaAcc,
    kOmicronUpsilon,
    kDiaeresis
  };

public:
  class State {
  public:
    State()
      : mState(kStart)
    {
    }

    MOZ_IMPLICIT State(const GreekStates& aState)
      : mState(aState)
    {
    }

    void Reset()
    {
      mState = kStart;
    }

    operator GreekStates() const
    {
      return mState;
    }

  private:
    GreekStates mState;
  };

  static uint32_t UpperCase(uint32_t aCh, State& aState);
};

} // namespace mozilla

#endif