'use strict';

// see tools/generate-charset-mapping.js
// basicalliy result of "SHOW COLLATION" query

const encodings = [
  'utf8',
  'big5',
  'latin2',
  'dec8',
  'cp850',
  'latin1',
  'hp8',
  'koi8r',
  'latin1',
  'latin2',
  'swe7',
  'ascii',
  'eucjp',
  'sjis',
  'cp1251',
  'latin1',
  'hebrew',
  'utf8',
  'tis620',
  'euckr',
  'latin7',
  'latin2',
  'koi8u',
  'cp1251',
  'gb2312',
  'greek',
  'cp1250',
  'latin2',
  'gbk',
  'cp1257',
  'latin5',
  'latin1',
  'armscii8',
  'cesu8',
  'cp1250',
  'ucs2',
  'cp866',
  'keybcs2',
  'macintosh',
  'macroman',
  'cp852',
  'latin7',
  'latin7',
  'macintosh',
  'cp1250',
  'utf8',
  'utf8',
  'latin1',
  'latin1',
  'latin1',
  'cp1251',
  'cp1251',
  'cp1251',
  'macroman',
  'utf16',
  'utf16',
  'utf16-le',
  'cp1256',
  'cp1257',
  'cp1257',
  'utf32',
  'utf32',
  'utf16-le',
  'binary',
  'armscii8',
  'ascii',
  'cp1250',
  'cp1256',
  'cp866',
  'dec8',
  'greek',
  'hebrew',
  'hp8',
  'keybcs2',
  'koi8r',
  'koi8u',
  'cesu8',
  'latin2',
  'latin5',
  'latin7',
  'cp850',
  'cp852',
  'swe7',
  'cesu8',
  'big5',
  'euckr',
  'gb2312',
  'gbk',
  'sjis',
  'tis620',
  'ucs2',
  'eucjp',
  'geostd8',
  'geostd8',
  'latin1',
  'cp932',
  'cp932',
  'eucjpms',
  'eucjpms',
  'cp1250',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf16',
  'utf8',
  'utf8',
  'utf8',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'ucs2',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'ucs2',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf32',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'cesu8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'cesu8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'gb18030',
  'gb18030',
  'gb18030',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
  'utf8',
];

// MariaDB NO PAD collations mirror their PAD SPACE counterparts:
// collation id = PAD SPACE collation id + 1024
const padSpaceLength = encodings.length;
for (let id = 1025; id < 1024 + padSpaceLength; id++) {
  encodings[id] = encodings[id - 1024];
}

// MariaDB UCA-14.0.0 (uca1400) collations use fixed 256-id blocks
// per character set, each covering the PAD SPACE and NO PAD variants
const uca1400Blocks = [
  [2048, 'cesu8'], // utf8mb3
  [2304, 'utf8'], // utf8mb4
  [2560, 'ucs2'], // ucs2
  [2816, 'utf16'], // utf16
  [3072, 'utf32'], // utf32
];
for (const [start, encoding] of uca1400Blocks) {
  for (let id = start; id < start + 256; id++) {
    encodings[id] = encoding;
  }
}

module.exports = encodings;