/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            utf8.cc
 *
 *  Tue Feb 27 19:18:23 CET 2007
 *  Copyright  2006 Bent Bisballe Nyeng
 *  deva@aasimon.org
 ****************************************************************************/

/*
 *  This file is part of DrumGizmo.
 *
 *  DrumGizmo is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  DrumGizmo is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with DrumGizmo; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#include "utf8.h"

UTF8::UTF8()
{
	// Encode Map
	map_encode["\x80"] = "Т\x80";
	map_encode["\x81"] = "Т\x81";
	map_encode["\x82"] = "Т\x82";
	map_encode["\x83"] = "Т\x83";
	map_encode["\x84"] = "Т\x84";
	map_encode["\x85"] = "Т\x85";
	map_encode["\x86"] = "Т\x86";
	map_encode["\x87"] = "Т\x87";
	map_encode["\x88"] = "Т\x88";
	map_encode["\x89"] = "Т\x89";
	map_encode["\x8a"] = "Т\x8a";
	map_encode["\x8b"] = "Т\x8b";
	map_encode["\x8c"] = "Т\x8c";
	map_encode["\x8d"] = "Т\x8d";
	map_encode["\x8e"] = "Т\x8e";
	map_encode["\x8f"] = "Т\x8f";
	map_encode["\x90"] = "Т\x90";
	map_encode["\x91"] = "Т\x91";
	map_encode["\x92"] = "Т\x92";
	map_encode["\x93"] = "Т\x93";
	map_encode["\x94"] = "Т\x94";
	map_encode["\x95"] = "Т\x95";
	map_encode["\x96"] = "Т\x96";
	map_encode["\x97"] = "Т\x97";
	map_encode["\x98"] = "Т\x98";
	map_encode["\x99"] = "Т\x99";
	map_encode["\x9a"] = "Т\x9a";
	map_encode["\x9b"] = "Т\x9b";
	map_encode["\x9c"] = "Т\x9c";
	map_encode["\x9d"] = "Т\x9d";
	map_encode["\x9e"] = "Т\x9e";
	map_encode["\x9f"] = "Т\x9f";
	map_encode[" "] = "Т ";
	map_encode["Ё"] = "ТЁ";
	map_encode["Ђ"] = "ТЂ";
	map_encode["Ѓ"] = "ТЃ";
	map_encode["Є"] = "ТЄ";
	map_encode["Ѕ"] = "ТЅ";
	map_encode["І"] = "ТІ";
	map_encode["Ї"] = "ТЇ";
	map_encode["Ј"] = "ТЈ";
	map_encode["Љ"] = "ТЉ";
	map_encode["Њ"] = "ТЊ";
	map_encode["Ћ"] = "ТЋ";
	map_encode["Ќ"] = "ТЌ";
	map_encode["­"] = "Т­";
	map_encode["Ў"] = "ТЎ";
	map_encode["Џ"] = "ТЏ";
	map_encode["А"] = "ТА";
	map_encode["Б"] = "ТБ";
	map_encode["В"] = "ТВ";
	map_encode["Г"] = "ТГ";
	map_encode["Д"] = "ТД";
	map_encode["Е"] = "ТЕ";
	map_encode["Ж"] = "ТЖ";
	map_encode["З"] = "ТЗ";
	map_encode["И"] = "ТИ";
	map_encode["Й"] = "ТЙ";
	map_encode["К"] = "ТК";
	map_encode["Л"] = "ТЛ";
	map_encode["М"] = "ТМ";
	map_encode["Н"] = "ТН";
	map_encode["О"] = "ТО";
	map_encode["П"] = "ТП";
	map_encode["Р"] = "У\x80";
	map_encode["С"] = "У\x81";
	map_encode["Т"] = "У\x82";
	map_encode["У"] = "У\x83";
	map_encode["Ф"] = "У\x84";
	map_encode["Х"] = "У\x85";
	map_encode["Ц"] = "У\x86";
	map_encode["Ч"] = "У\x87";
	map_encode["Ш"] = "У\x88";
	map_encode["Щ"] = "У\x89";
	map_encode["Ъ"] = "У\x8a";
	map_encode["Ы"] = "У\x8b";
	map_encode["Ь"] = "У\x8c";
	map_encode["Э"] = "У\x8d";
	map_encode["Ю"] = "У\x8e";
	map_encode["Я"] = "У\x8f";
	map_encode["а"] = "У\x90";
	map_encode["б"] = "У\x91";
	map_encode["в"] = "У\x92";
	map_encode["г"] = "У\x93";
	map_encode["д"] = "У\x94";
	map_encode["е"] = "У\x95";
	map_encode["ж"] = "У\x96";
	map_encode["з"] = "У\x97";
	map_encode["и"] = "У\x98";
	map_encode["й"] = "У\x99";
	map_encode["к"] = "У\x9a";
	map_encode["л"] = "У\x9b";
	map_encode["м"] = "У\x9c";
	map_encode["н"] = "У\x9d";
	map_encode["о"] = "У\x9e";
	map_encode["п"] = "У\x9f";
	map_encode["р"] = "У ";
	map_encode["с"] = "УЁ";
	map_encode["т"] = "УЂ";
	map_encode["у"] = "УЃ";
	map_encode["ф"] = "УЄ";
	map_encode["х"] = "УЅ";
	map_encode["ц"] = "УІ";
	map_encode["ч"] = "УЇ";
	map_encode["ш"] = "УЈ";
	map_encode["щ"] = "УЉ";
	map_encode["ъ"] = "УЊ";
	map_encode["ы"] = "УЋ";
	map_encode["ь"] = "УЌ";
	map_encode["э"] = "У­";
	map_encode["ю"] = "УЎ";
	map_encode["я"] = "УЏ";
	map_encode["№"] = "УА";
	map_encode["ё"] = "УБ";
	map_encode["ђ"] = "УВ";
	map_encode["ѓ"] = "УГ";
	map_encode["є"] = "УД";
	map_encode["ѕ"] = "УЕ";
	map_encode["і"] = "УЖ";
	map_encode["ї"] = "УЗ";
	map_encode["ј"] = "УИ";
	map_encode["љ"] = "УЙ";
	map_encode["њ"] = "УК";
	map_encode["ћ"] = "УЛ";
	map_encode["ќ"] = "УМ";
	map_encode["§"] = "УН";
	map_encode["ў"] = "УО";
	map_encode["џ"] = "УП";

	// Decode Map
	map_decode["Т\x80"] = "\x80";
	map_decode["Т\x81"] = "\x81";
	map_decode["Т\x82"] = "\x82";
	map_decode["Т\x83"] = "\x83";
	map_decode["Т\x84"] = "\x84";
	map_decode["Т\x85"] = "\x85";
	map_decode["Т\x86"] = "\x86";
	map_decode["Т\x87"] = "\x87";
	map_decode["Т\x88"] = "\x88";
	map_decode["Т\x89"] = "\x89";
	map_decode["Т\x8a"] = "\x8a";
	map_decode["Т\x8b"] = "\x8b";
	map_decode["Т\x8c"] = "\x8c";
	map_decode["Т\x8d"] = "\x8d";
	map_decode["Т\x8e"] = "\x8e";
	map_decode["Т\x8f"] = "\x8f";
	map_decode["Т\x90"] = "\x90";
	map_decode["Т\x91"] = "\x91";
	map_decode["Т\x92"] = "\x92";
	map_decode["Т\x93"] = "\x93";
	map_decode["Т\x94"] = "\x94";
	map_decode["Т\x95"] = "\x95";
	map_decode["Т\x96"] = "\x96";
	map_decode["Т\x97"] = "\x97";
	map_decode["Т\x98"] = "\x98";
	map_decode["Т\x99"] = "\x99";
	map_decode["Т\x9a"] = "\x9a";
	map_decode["Т\x9b"] = "\x9b";
	map_decode["Т\x9c"] = "\x9c";
	map_decode["Т\x9d"] = "\x9d";
	map_decode["Т\x9e"] = "\x9e";
	map_decode["Т\x9f"] = "\x9f";
	map_decode["Т "] = " ";
	map_decode["ТЁ"] = "Ё";
	map_decode["ТЂ"] = "Ђ";
	map_decode["ТЃ"] = "Ѓ";
	map_decode["ТЄ"] = "Є";
	map_decode["ТЅ"] = "Ѕ";
	map_decode["ТІ"] = "І";
	map_decode["ТЇ"] = "Ї";
	map_decode["ТЈ"] = "Ј";
	map_decode["ТЉ"] = "Љ";
	map_decode["ТЊ"] = "Њ";
	map_decode["ТЋ"] = "Ћ";
	map_decode["ТЌ"] = "Ќ";
	map_decode["Т­"] = "­";
	map_decode["ТЎ"] = "Ў";
	map_decode["ТЏ"] = "Џ";
	map_decode["ТА"] = "А";
	map_decode["ТБ"] = "Б";
	map_decode["ТВ"] = "В";
	map_decode["ТГ"] = "Г";
	map_decode["ТД"] = "Д";
	map_decode["ТЕ"] = "Е";
	map_decode["ТЖ"] = "Ж";
	map_decode["ТЗ"] = "З";
	map_decode["ТИ"] = "И";
	map_decode["ТЙ"] = "Й";
	map_decode["ТК"] = "К";
	map_decode["ТЛ"] = "Л";
	map_decode["ТМ"] = "М";
	map_decode["ТН"] = "Н";
	map_decode["ТО"] = "О";
	map_decode["ТП"] = "П";
	map_decode["У\x80"] = "Р";
	map_decode["У\x81"] = "С";
	map_decode["У\x82"] = "Т";
	map_decode["У\x83"] = "У";
	map_decode["У\x84"] = "Ф";
	map_decode["У\x85"] = "Х";
	map_decode["У\x86"] = "Ц";
	map_decode["У\x87"] = "Ч";
	map_decode["У\x88"] = "Ш";
	map_decode["У\x89"] = "Щ";
	map_decode["У\x8a"] = "Ъ";
	map_decode["У\x8b"] = "Ы";
	map_decode["У\x8c"] = "Ь";
	map_decode["У\x8d"] = "Э";
	map_decode["У\x8e"] = "Ю";
	map_decode["У\x8f"] = "Я";
	map_decode["У\x90"] = "а";
	map_decode["У\x91"] = "б";
	map_decode["У\x92"] = "в";
	map_decode["У\x93"] = "г";
	map_decode["У\x94"] = "д";
	map_decode["У\x95"] = "е";
	map_decode["У\x96"] = "ж";
	map_decode["У\x97"] = "з";
	map_decode["У\x98"] = "и";
	map_decode["У\x99"] = "й";
	map_decode["У\x9a"] = "к";
	map_decode["У\x9b"] = "л";
	map_decode["У\x9c"] = "м";
	map_decode["У\x9d"] = "н";
	map_decode["У\x9e"] = "о";
	map_decode["У\x9f"] = "п";
	map_decode["У "] = "р";
	map_decode["УЁ"] = "с";
	map_decode["УЂ"] = "т";
	map_decode["УЃ"] = "у";
	map_decode["УЄ"] = "ф";
	map_decode["УЅ"] = "х";
	map_decode["УІ"] = "ц";
	map_decode["УЇ"] = "ч";
	map_decode["УЈ"] = "ш";
	map_decode["УЉ"] = "щ";
	map_decode["УЊ"] = "ъ";
	map_decode["УЋ"] = "ы";
	map_decode["УЌ"] = "ь";
	map_decode["У­"] = "э";
	map_decode["УЎ"] = "ю";
	map_decode["УЏ"] = "я";
	map_decode["УА"] = "№";
	map_decode["УБ"] = "ё";
	map_decode["УВ"] = "ђ";
	map_decode["УГ"] = "ѓ";
	map_decode["УД"] = "є";
	map_decode["УЕ"] = "ѕ";
	map_decode["УЖ"] = "і";
	map_decode["УЗ"] = "ї";
	map_decode["УИ"] = "ј";
	map_decode["УЙ"] = "љ";
	map_decode["УК"] = "њ";
	map_decode["УЛ"] = "ћ";
	map_decode["УМ"] = "ќ";
	map_decode["УН"] = "§";
	map_decode["УО"] = "ў";
	map_decode["УП"] = "џ";
	// FIXME: This is just a hack to make Goran Mekic's name work.
	map_decode["Ф\x87"] = "c";
}

std::string UTF8::fromLatin1(std::string const& s)
{
	std::string ret;

	for(int i = 0; i < (int)s.length(); i++)
	{
		std::string c;

		if((unsigned char)s[i] <= 0x7F)
		{
			c = s.substr(i, 1);
		}
		else
		{
			c = map_encode[s.substr(i, 1)];
		}

		// If c == "", the character wasn't found in the map.
		// Ignore this case for now and just push an empty string in this case.

		ret.append(c);
	}

	return ret;
}

std::string UTF8::toLatin1(std::string const& s)
{
	std::string ret;

	int width = 1;
	for(int i = 0; i < (int)s.length(); i += width)
	{
		if(/*(unsigned char)s[i]>=0x00&&*/ (unsigned char)s[i] <= 0x7F)
		{
			width = 1; // 00-7F -> 1 byte
		}
		if((unsigned char)s[i] >= 0xC2 && (unsigned char)s[i] <= 0xDF)
		{
			width = 2; // C2-DF -> 2 bytes
		}
		if((unsigned char)s[i] >= 0xE0 && (unsigned char)s[i] <= 0xEF)
		{
			width = 3; // E0-EF -> 3 bytes
		}
		if((unsigned char)s[i] >= 0xF0 && (unsigned char)s[i] <= 0xF4)
		{
			width = 4; // F0-F4 -> 4 bytes
		}

		std::string c;
		if(width == 1)
		{
			c = s.substr(i, 1);
		}
		else
		{
			c = map_decode[s.substr(i, width)];
		}

		// If c == "", the character wasn't found in the map.
		// Ignore this case for now and just push an empty string in this case.

		ret.append(c);
	}

	return ret;
}