imapflow
Version:
IMAP Client for Node
284 lines (279 loc) • 5.4 kB
JavaScript
;
const CHARACTER_SETS = [
'US-ASCII',
'ISO-8859-1',
'ISO-8859-2',
'ISO-8859-3',
'ISO-8859-4',
'ISO-8859-5',
'ISO-8859-6',
'ISO-8859-7',
'ISO-8859-8',
'ISO-8859-9',
'ISO-8859-10',
'ISO_6937-2-add',
'JIS_X0201',
'JIS_Encoding',
'Shift_JIS',
'EUC-JP',
'Extended_UNIX_Code_Fixed_Width_for_Japanese',
'BS_4730',
'SEN_850200_C',
'IT',
'ES',
'DIN_66003',
'NS_4551-1',
'NF_Z_62-010',
'ISO-10646-UTF-1',
'ISO_646.basic:1983',
'INVARIANT',
'ISO_646.irv:1983',
'NATS-SEFI',
'NATS-SEFI-ADD',
'NATS-DANO',
'NATS-DANO-ADD',
'SEN_850200_B',
'KS_C_5601-1987',
'ISO-2022-KR',
'EUC-KR',
'ISO-2022-JP',
'ISO-2022-JP-2',
'JIS_C6220-1969-jp',
'JIS_C6220-1969-ro',
'PT',
'greek7-old',
'latin-greek',
'NF_Z_62-010_(1973)',
'Latin-greek-1',
'ISO_5427',
'JIS_C6226-1978',
'BS_viewdata',
'INIS',
'INIS-8',
'INIS-cyrillic',
'ISO_5427:1981',
'ISO_5428:1980',
'GB_1988-80',
'GB_2312-80',
'NS_4551-2',
'videotex-suppl',
'PT2',
'ES2',
'MSZ_7795.3',
'JIS_C6226-1983',
'greek7',
'ASMO_449',
'iso-ir-90',
'JIS_C6229-1984-a',
'JIS_C6229-1984-b',
'JIS_C6229-1984-b-add',
'JIS_C6229-1984-hand',
'JIS_C6229-1984-hand-add',
'JIS_C6229-1984-kana',
'ISO_2033-1983',
'ANSI_X3.110-1983',
'T.61-7bit',
'T.61-8bit',
'ECMA-cyrillic',
'CSA_Z243.4-1985-1',
'CSA_Z243.4-1985-2',
'CSA_Z243.4-1985-gr',
'ISO-8859-6-E',
'ISO-8859-6-I',
'T.101-G2',
'ISO-8859-8-E',
'ISO-8859-8-I',
'CSN_369103',
'JUS_I.B1.002',
'IEC_P27-1',
'JUS_I.B1.003-serb',
'JUS_I.B1.003-mac',
'greek-ccitt',
'NC_NC00-10:81',
'ISO_6937-2-25',
'GOST_19768-74',
'ISO_8859-supp',
'ISO_10367-box',
'latin-lap',
'JIS_X0212-1990',
'DS_2089',
'us-dk',
'dk-us',
'KSC5636',
'UNICODE-1-1-UTF-7',
'ISO-2022-CN',
'ISO-2022-CN-EXT',
'UTF-8',
'ISO-8859-13',
'ISO-8859-14',
'ISO-8859-15',
'ISO-8859-16',
'GBK',
'GB18030',
'OSD_EBCDIC_DF04_15',
'OSD_EBCDIC_DF03_IRV',
'OSD_EBCDIC_DF04_1',
'ISO-11548-1',
'KZ-1048',
'ISO-10646-UCS-2',
'ISO-10646-UCS-4',
'ISO-10646-UCS-Basic',
'ISO-10646-Unicode-Latin1',
'ISO-10646-J-1',
'ISO-Unicode-IBM-1261',
'ISO-Unicode-IBM-1268',
'ISO-Unicode-IBM-1276',
'ISO-Unicode-IBM-1264',
'ISO-Unicode-IBM-1265',
'UNICODE-1-1',
'SCSU',
'UTF-7',
'UTF-16BE',
'UTF-16LE',
'UTF-16',
'CESU-8',
'UTF-32',
'UTF-32BE',
'UTF-32LE',
'BOCU-1',
'ISO-8859-1-Windows-3.0-Latin-1',
'ISO-8859-1-Windows-3.1-Latin-1',
'ISO-8859-2-Windows-Latin-2',
'ISO-8859-9-Windows-Latin-5',
'hp-roman8',
'Adobe-Standard-Encoding',
'Ventura-US',
'Ventura-International',
'DEC-MCS',
'IBM850',
'PC8-Danish-Norwegian',
'IBM862',
'PC8-Turkish',
'IBM-Symbols',
'IBM-Thai',
'HP-Legal',
'HP-Pi-font',
'HP-Math8',
'Adobe-Symbol-Encoding',
'HP-DeskTop',
'Ventura-Math',
'Microsoft-Publishing',
'Windows-31J',
'GB2312',
'Big5',
'macintosh',
'IBM037',
'IBM038',
'IBM273',
'IBM274',
'IBM275',
'IBM277',
'IBM278',
'IBM280',
'IBM281',
'IBM284',
'IBM285',
'IBM290',
'IBM297',
'IBM420',
'IBM423',
'IBM424',
'IBM437',
'IBM500',
'IBM851',
'IBM852',
'IBM855',
'IBM857',
'IBM860',
'IBM861',
'IBM863',
'IBM864',
'IBM865',
'IBM868',
'IBM869',
'IBM870',
'IBM871',
'IBM880',
'IBM891',
'IBM903',
'IBM904',
'IBM905',
'IBM918',
'IBM1026',
'EBCDIC-AT-DE',
'EBCDIC-AT-DE-A',
'EBCDIC-CA-FR',
'EBCDIC-DK-NO',
'EBCDIC-DK-NO-A',
'EBCDIC-FI-SE',
'EBCDIC-FI-SE-A',
'EBCDIC-FR',
'EBCDIC-IT',
'EBCDIC-PT',
'EBCDIC-ES',
'EBCDIC-ES-A',
'EBCDIC-ES-S',
'EBCDIC-UK',
'EBCDIC-US',
'UNKNOWN-8BIT',
'MNEMONIC',
'MNEM',
'VISCII',
'VIQR',
'KOI8-R',
'HZ-GB-2312',
'IBM866',
'IBM775',
'KOI8-U',
'IBM00858',
'IBM00924',
'IBM01140',
'IBM01141',
'IBM01142',
'IBM01143',
'IBM01144',
'IBM01145',
'IBM01146',
'IBM01147',
'IBM01148',
'IBM01149',
'Big5-HKSCS',
'IBM1047',
'PTCP154',
'Amiga-1251',
'KOI7-switched',
'BRF',
'TSCII',
'CP51932',
'windows-874',
'windows-1250',
'windows-1251',
'windows-1252',
'windows-1253',
'windows-1254',
'windows-1255',
'windows-1256',
'windows-1257',
'windows-1258',
'TIS-620',
'CP50220'
];
const CHARSET_MAP = new Map();
CHARACTER_SETS.forEach(entry => {
let key = entry.replace(/[_-\s]/g, '').toLowerCase();
let modifiedKey = key
.replace(/^windows/, 'win')
.replace(/^usascii/, 'ascii')
.replace(/^iso8859/, 'latin');
CHARSET_MAP.set(key, entry);
if (!CHARSET_MAP.has(modifiedKey)) {
CHARSET_MAP.set(modifiedKey, entry);
}
});
module.exports.resolveCharset = charset => {
let key = charset.replace(/[_-\s]/g, '').toLowerCase();
if (CHARSET_MAP.has(key)) {
return CHARSET_MAP.get(key);
}
return null;
};