思ったよりたくさんあったのでメモ
[00]"UTF-8"
[01]"ISO-8859-1"
[02]"latin1"
[03]"CP819"
[04]"IBM819"
[05]"iso-ir-100"
[06]"csISOLatin1"
[07]"ISO-8859-15"
[08]"latin9"
[09]"UTF-32LE"
[10]"UTF-32BE"
[11]"UTF-32"
[12]"UTF-16LE"
[13]"UTF-16BE"
[14]"UTF-16"
[15]"System"
[16]"roman8"
[17]"hp-roman8"
[18]"csHPRoman8"
[19]"TIS-620"
[20]"ISO 8859-11"
[21]"WINSAMI2"
[22]"WS2"
[23]"Apple Roman"
[24]"macintosh"
[25]"MacRoman"
[26]"windows-1258"
[27]"CP1258"
[28]"windows-1257"
[29]"CP1257"
[30]"windows-1256"
[31]"CP1256"
[32]"windows-1255"
[33]"CP1255"
[34]"windows-1254"
[35]"CP1254"
[36]"windows-1253"
[37]"CP1253"
[38]"windows-1252"
[39]"CP1252"
[40]"windows-1251"
[41]"CP1251"
[42]"windows-1250"
[43]"CP1250"
[44]"IBM866"
[45]"CP866"
[46]"csIBM866"
[47]"IBM874"
[48]"CP874"
[49]"IBM850"
[50]"CP850"
[51]"csPC850Multilingual"
[52]"ISO-8859-16"
[53]"iso-ir-226"
[54]"latin10"
[55]"ISO-8859-14"
[56]"iso-ir-199"
[57]"latin8"
[58]"iso-celtic"
[59]"ISO-8859-13"
[60]"ISO-8859-10"
[61]"iso-ir-157"
[62]"latin6"
[63]"ISO-8859-10:1992"
[64]"csISOLatin6"
[65]"ISO-8859-9"
[66]"iso-ir-148"
[67]"latin5"
[68]"csISOLatin5"
[69]"ISO-8859-8"
[70]"ISO 8859-8-I"
[71]"iso-ir-138"
[72]"hebrew"
[73]"csISOLatinHebrew"
[74]"ISO-8859-7"
[75]"ECMA-118"
[76]"greek"
[77]"iso-ir-126"
[78]"csISOLatinGreek"
[79]"ISO-8859-6"
[80]"ISO-8859-6-I"
[81]"ECMA-114"
[82]"ASMO-708"
[83]"arabic"
[84]"iso-ir-127"
[85]"csISOLatinArabic"
[86]"ISO-8859-5"
[87]"cyrillic"
[88]"iso-ir-144"
[89]"csISOLatinCyrillic"
[90]"ISO-8859-4"
[91]"latin4"
[92]"iso-ir-110"
[93]"csISOLatin4"
[94]"ISO-8859-3"
[95]"latin3"
[96]"iso-ir-109"
[97]"csISOLatin3"
[98]"ISO-8859-2"
[99]"latin2"
[100]"iso-ir-101"
[101]"csISOLatin2"
[102]"KOI8-U"
[103]"KOI8-RU"
[104]"KOI8-R"
[105]"csKOI8R"
[106]"Iscii-Mlm"
[107]"Iscii-Knd"
[108]"Iscii-Tlg"
[109]"Iscii-Tml"
[110]"Iscii-Ori"
[111]"Iscii-Gjr"
[112]"Iscii-Pnj"
[113]"Iscii-Bng"
[114]"Iscii-Dev"
[115]"TSCII"
[116]"GB18030"
[117]"GBK"
[118]"GB2312"
[119]"CP936"
[120]"MS936"
[121]"windows-936"
[122]"EUC-JP"
[123]"ISO-2022-JP"
[124]"Shift_JIS"
[125]"JIS7"
[126]"SJIS"
[127]"MS_Kanji"
[128]"EUC-KR"
[129]"cp949"
[130]"Big5"
[131]"Big5-HKSCS"
[132]"Big5-ETen"
[133]"CP950"