#include <unordered_map>
#include <string>

#include "safewindows.h"
#include "wincodepages.h"

using namespace std;

struct WinCpDef {
    string cpname;
    string cpcomment;
};

static unordered_map<int, WinCpDef> cpdefs {
    {037, {"IBM037", "IBM EBCDIC US-Canada"}},
    {437, {"IBM437", "OEM United States"}},
    {500, {"IBM500", "IBM EBCDIC International"}},
    {708, {"ASMO-708", "Arabic (ASMO 708)"}},
    {709, {"", "Arabic (ASMO-449+, BCON V4)"}},
    {710, {"", "Arabic - Transparent Arabic"}},
    {720, {"DOS-720", "Arabic (Transparent ASMO); Arabic (DOS)"}},
    {737, {"ibm737", "OEM Greek (formerly 437G); Greek (DOS)"}},
    {775, {"ibm775", "OEM Baltic; Baltic (DOS)"}},
    {850, {"ibm850", "OEM Multilingual Latin 1; Western European (DOS)"}},
    {852, {"ibm852", "OEM Latin 2; Central European (DOS)"}},
    {855, {"IBM855", "OEM Cyrillic (primarily Russian)"}},
    {857, {"ibm857", "OEM Turkish; Turkish (DOS)"}},
    {858, {"IBM00858", "OEM Multilingual Latin 1 + Euro symbol"}},
    {860, {"IBM860", "OEM Portuguese; Portuguese (DOS)"}},
    {861, {"ibm861", "OEM Icelandic; Icelandic (DOS)"}},
    {862, {"DOS-862", "OEM Hebrew; Hebrew (DOS)"}},
    {863, {"IBM863", "OEM French Canadian; French Canadian (DOS)"}},
    {864, {"IBM864", "OEM Arabic; Arabic (864)"}},
    {865, {"IBM865", "OEM Nordic; Nordic (DOS)"}},
    {866, {"cp866", "OEM Russian; Cyrillic (DOS)"}},
    {869, {"ibm869", "OEM Modern Greek; Greek, Modern (DOS)"}},
    {870, {"IBM870", "IBM EBCDIC Multilingual/ROECE (Latin 2); IBM EBCDIC Multilingual Latin 2"}},
    {874, {"windows-874", "ANSI/OEM Thai (ISO 8859-11); Thai (Windows)"}},
    {875, {"cp875", "IBM EBCDIC Greek Modern"}},
    {932, {"shift_jis", "ANSI/OEM Japanese; Japanese (Shift-JIS)"}},
    {936, {"gb2312", "ANSI/OEM Simplified Chinese (PRC, Singapore); Chinese Simplified (GB2312)"}},
    {949, {"ks_c_5601-1987", "ANSI/OEM Korean (Unified Hangul Code)"}},
    {950, {"big5", "ANSI/OEM Traditional Chinese (Taiwan; Hong Kong SAR, PRC); Chinese Traditional (Big5)"}},
    {1026, {"IBM1026", "IBM EBCDIC Turkish (Latin 5)"}},
    {1047, {"IBM01047", "IBM EBCDIC Latin 1/Open System"}},
    {1140, {"IBM01140", "IBM EBCDIC US-Canada (037 + Euro symbol); IBM EBCDIC (US-Canada-Euro)"}},
    {1141, {"IBM01141", "IBM EBCDIC Germany (20273 + Euro symbol); IBM EBCDIC (Germany-Euro)"}},
    {1142, {"IBM01142", "IBM EBCDIC Denmark-Norway (20277 + Euro symbol); IBM EBCDIC (Denmark-Norway-Euro)"}},
    {1143, {"IBM01143", "IBM EBCDIC Finland-Sweden (20278 + Euro symbol); IBM EBCDIC (Finland-Sweden-Euro)"}},
    {1144, {"IBM01144", "IBM EBCDIC Italy (20280 + Euro symbol); IBM EBCDIC (Italy-Euro)"}},
    {1145, {"IBM01145", "IBM EBCDIC Latin America-Spain (20284 + Euro symbol); IBM EBCDIC (Spain-Euro)"}},
    {1146, {"IBM01146", "IBM EBCDIC United Kingdom (20285 + Euro symbol); IBM EBCDIC (UK-Euro)"}},
    {1147, {"IBM01147", "IBM EBCDIC France (20297 + Euro symbol); IBM EBCDIC (France-Euro)"}},
    {1148, {"IBM01148", "IBM EBCDIC International (500 + Euro symbol); IBM EBCDIC (International-Euro)"}},
    {1149, {"IBM01149", "IBM EBCDIC Icelandic (20871 + Euro symbol); IBM EBCDIC (Icelandic-Euro)"}},
    {1200, {"utf-16", "Unicode UTF-16, little endian byte order (BMP of ISO 10646); available only to managed applications"}},
    {1201, {"unicodeFFFE", "Unicode UTF-16, big endian byte order; available only to managed applications"}},
    {1250, {"windows-1250", "ANSI Central European; Central European (Windows)"}},
    {1251, {"windows-1251", "ANSI Cyrillic; Cyrillic (Windows)"}},
    {1252, {"windows-1252", "ANSI Latin 1; Western European (Windows)"}},
    {1253, {"windows-1253", "ANSI Greek; Greek (Windows)"}},
    {1254, {"windows-1254", "ANSI Turkish; Turkish (Windows)"}},
    {1255, {"windows-1255", "ANSI Hebrew; Hebrew (Windows)"}},
    {1256, {"windows-1256", "ANSI Arabic; Arabic (Windows)"}},
    {1257, {"windows-1257", "ANSI Baltic; Baltic (Windows)"}},
    {1258, {"windows-1258", "ANSI/OEM Vietnamese; Vietnamese (Windows)"}},
    {1361, {"Johab", "Korean (Johab)"}},
    {10000, {"macintosh", "MAC Roman; Western European (Mac)"}},
    {10001, {"x-mac-japanese", "Japanese (Mac)"}},
    {10002, {"x-mac-chinesetrad", "MAC Traditional Chinese (Big5); Chinese Traditional (Mac)"}},
    {10003, {"x-mac-korean", "Korean (Mac)"}},
    {10004, {"x-mac-arabic", "Arabic (Mac)"}},
    {10005, {"x-mac-hebrew", "Hebrew (Mac)"}},
    {10006, {"x-mac-greek", "Greek (Mac)"}},
    {10007, {"x-mac-cyrillic", "Cyrillic (Mac)"}},
    {10008, {"x-mac-chinesesimp", "MAC Simplified Chinese (GB 2312); Chinese Simplified (Mac)"}},
    {10010, {"x-mac-romanian", "Romanian (Mac)"}},
    {10017, {"x-mac-ukrainian", "Ukrainian (Mac)"}},
    {10021, {"x-mac-thai", "Thai (Mac)"}},
    {10029, {"x-mac-ce", "MAC Latin 2; Central European (Mac)"}},
    {10079, {"x-mac-icelandic", "Icelandic (Mac)"}},
    {10081, {"x-mac-turkish", "Turkish (Mac)"}},
    {10082, {"x-mac-croatian", "Croatian (Mac)"}},
    {12000, {"utf-32", "Unicode UTF-32, little endian byte order; available only to managed applications"}},
    {12001, {"utf-32BE", "Unicode UTF-32, big endian byte order; available only to managed applications"}},
    {20000, {"x-Chinese_CNS", "CNS Taiwan; Chinese Traditional (CNS)"}},
    {20001, {"x-cp20001", "TCA Taiwan"}},
    {20002, {"x_Chinese-Eten", "Eten Taiwan; Chinese Traditional (Eten)"}},
    {20003, {"x-cp20003", "IBM5550 Taiwan"}},
    {20004, {"x-cp20004", "TeleText Taiwan"}},
    {20005, {"x-cp20005", "Wang Taiwan"}},
    {20105, {"x-IA5", "IA5 (IRV International Alphabet No. 5, 7-bit); Western European (IA5)"}},
    {20106, {"x-IA5-German", "IA5 German (7-bit)"}},
    {20107, {"x-IA5-Swedish", "IA5 Swedish (7-bit)"}},
    {20108, {"x-IA5-Norwegian", "IA5 Norwegian (7-bit)"}},
    {20127, {"us-ascii", "US-ASCII (7-bit)"}},
    {20261, {"x-cp20261", "T.61"}},
    {20269, {"x-cp20269", "ISO 6937 Non-Spacing Accent"}},
    {20273, {"IBM273", "IBM EBCDIC Germany"}},
    {20277, {"IBM277", "IBM EBCDIC Denmark-Norway"}},
    {20278, {"IBM278", "IBM EBCDIC Finland-Sweden"}},
    {20280, {"IBM280", "IBM EBCDIC Italy"}},
    {20284, {"IBM284", "IBM EBCDIC Latin America-Spain"}},
    {20285, {"IBM285", "IBM EBCDIC United Kingdom"}},
    {20290, {"IBM290", "IBM EBCDIC Japanese Katakana Extended"}},
    {20297, {"IBM297", "IBM EBCDIC France"}},
    {20420, {"IBM420", "IBM EBCDIC Arabic"}},
    {20423, {"IBM423", "IBM EBCDIC Greek"}},
    {20424, {"IBM424", "IBM EBCDIC Hebrew"}},
    {20833, {"x-EBCDIC-KoreanExtended", "IBM EBCDIC Korean Extended"}},
    {20838, {"IBM-Thai", "IBM EBCDIC Thai"}},
    {20866, {"koi8-r", "Russian (KOI8-R); Cyrillic (KOI8-R)"}},
    {20871, {"IBM871", "IBM EBCDIC Icelandic"}},
    {20880, {"IBM880", "IBM EBCDIC Cyrillic Russian"}},
    {20905, {"IBM905", "IBM EBCDIC Turkish"}},
    {20924, {"IBM00924", "IBM EBCDIC Latin 1/Open System (1047 + Euro symbol)"}},
    {20932, {"EUC-JP", "Japanese (JIS 0208-1990 and 0212-1990)"}},
    {20936, {"x-cp20936", "Simplified Chinese (GB2312); Chinese Simplified (GB2312-80)"}},
    {20949, {"x-cp20949", "Korean Wansung"}},
    {21025, {"cp1025", "IBM EBCDIC Cyrillic Serbian-Bulgarian"}},
    {21027, {"", "(deprecated)"}},
    {21866, {"koi8-u", "Ukrainian (KOI8-U); Cyrillic (KOI8-U)"}},
    {28591, {"iso-8859-1", "ISO 8859-1 Latin 1; Western European (ISO)"}},
    {28592, {"iso-8859-2", "ISO 8859-2 Central European; Central European (ISO)"}},
    {28593, {"iso-8859-3", "ISO 8859-3 Latin 3"}},
    {28594, {"iso-8859-4", "ISO 8859-4 Baltic"}},
    {28595, {"iso-8859-5", "ISO 8859-5 Cyrillic"}},
    {28596, {"iso-8859-6", "ISO 8859-6 Arabic"}},
    {28597, {"iso-8859-7", "ISO 8859-7 Greek"}},
    {28598, {"iso-8859-8", "ISO 8859-8 Hebrew; Hebrew (ISO-Visual)"}},
    {28599, {"iso-8859-9", "ISO 8859-9 Turkish"}},
    {28603, {"iso-8859-13", "ISO 8859-13 Estonian"}},
    {28605, {"iso-8859-15", "ISO 8859-15 Latin 9"}},
    {29001, {"x-Europa", "Europa 3"}},
    {38598, {"iso-8859-8-i", "ISO 8859-8 Hebrew; Hebrew (ISO-Logical)"}},
    {50220, {"iso-2022-jp", "ISO 2022 Japanese with no halfwidth Katakana; Japanese (JIS)"}},
    {50221, {"csISO2022JP", "ISO 2022 Japanese with halfwidth Katakana; Japanese (JIS-Allow 1 byte Kana)"}},
    {50222, {"iso-2022-jp", "ISO 2022 Japanese JIS X 0201-1989; Japanese (JIS-Allow 1 byte Kana - SO/SI)"}},
    {50225, {"iso-2022-kr", "ISO 2022 Korean"}},
    {50227, {"x-cp50227", "ISO 2022 Simplified Chinese; Chinese Simplified (ISO 2022)"}},
    {50229, {"", "ISO 2022 Traditional Chinese"}},
    {50930, {"", "EBCDIC Japanese (Katakana) Extended"}},
    {50931, {"", "EBCDIC US-Canada and Japanese"}},
    {50933, {"", "EBCDIC Korean Extended and Korean"}},
    {50935, {"", "EBCDIC Simplified Chinese Extended and Simplified Chinese"}},
    {50936, {"", "EBCDIC Simplified Chinese"}},
    {50937, {"", "EBCDIC US-Canada and Traditional Chinese"}},
    {50939, {"", "EBCDIC Japanese (Latin) Extended and Japanese"}},
    {51932, {"euc-jp", "EUC Japanese"}},
    {51936, {"EUC-CN", "EUC Simplified Chinese; Chinese Simplified (EUC)"}},
    {51949, {"euc-kr", "EUC Korean"}},
    {51950, {"", "EUC Traditional Chinese"}},
    {52936, {"hz-gb-2312", "HZ-GB2312 Simplified Chinese; Chinese Simplified (HZ)"}},
    {54936, {"GB18030", "Windows XP and later: GB18030 Simplified Chinese (4 byte); Chinese Simplified (GB18030)"}},
    {57002, {"x-iscii-de", "ISCII Devanagari"}},
    {57003, {"x-iscii-be", "ISCII Bangla"}},
    {57004, {"x-iscii-ta", "ISCII Tamil"}},
    {57005, {"x-iscii-te", "ISCII Telugu"}},
    {57006, {"x-iscii-as", "ISCII Assamese"}},
    {57007, {"x-iscii-or", "ISCII Odia"}},
    {57008, {"x-iscii-ka", "ISCII Kannada"}},
    {57009, {"x-iscii-ma", "ISCII Malayalam"}},
    {57010, {"x-iscii-gu", "ISCII Gujarati"}},
    {57011, {"x-iscii-pa", "ISCII Punjabi"}},
    {65000, {"utf-7", "Unicode (UTF-7)"}},
    {65001, {"utf-8", "Unicode (UTF-8)"}},
        };

static const string cp1252("CP1252");

const string& winACPName()
{
    unsigned int acp = GetACP();
    auto it = cpdefs.find(acp);
    if (it == cpdefs.end()) {
        return cp1252;
    } else {
        return it->second.cpname;
    }
}