// This file is part of UniLib <http://github.com/ufal/unilib/>.
//
// Copyright 2014 Institute of Formal and Applied Linguistics, Faculty of
// Mathematics and Physics, Charles University in Prague, Czech Republic.
//
// 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/.
//
// UniLib version: 3.1.2-devel
// Unicode version: 8.0.0

#pragma once

#include <cstdint>
#include <string>

namespace ufal {
namespace unilib {

class uninorms {
   public:
    static void nfc(std::u32string& str);
    static void nfd(std::u32string& str);
    static void nfkc(std::u32string& str);
    static void nfkd(std::u32string& str);

   private:
    static void compose(std::u32string& str);
    static void decompose(std::u32string& str, bool kanonical);

    static const char32_t CHARS = 0x110000;

    struct Hangul {
        // Hangul decomposition and composition
        static const char32_t SBase = 0xAC00, LBase = 0x1100, VBase = 0x1161,
                              TBase = 0x11A7;
        static const char32_t LCount = 19, VCount = 21, TCount = 28,
                              NCount = VCount * TCount,
                              SCount = LCount * NCount;
    };

    static const uint8_t ccc_index[CHARS >> 8];
    static const uint8_t ccc_block[][256];

    static const uint8_t composition_index[CHARS >> 8];
    static const uint16_t composition_block[][257];
    static const char32_t composition_data[];

    static const uint8_t decomposition_index[CHARS >> 8];
    static const uint16_t decomposition_block[][257];
    static const char32_t decomposition_data[];
};

}  // namespace unilib
}  // namespace ufal