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Lazy initialization of charset maps #166

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merged 3 commits into from
Feb 14, 2024
Merged

Lazy initialization of charset maps #166

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04f0ad4
lazy initialization of charset maps
toddtreece Dec 20, 2023
11c614c
initialize each charsetmap separately
toddtreece Dec 20, 2023
bce011a
switch from init to get
toddtreece Dec 20, 2023
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70 changes: 35 additions & 35 deletions internal/cp/charset.go
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Original file line number Diff line number Diff line change
Expand Up @@ -14,80 +14,80 @@ func collation2charset(col Collation) *charsetMap {
// http://msdn.microsoft.com/en-us/library/ms144250(v=sql.105).aspx
switch col.SortId {
case 30, 31, 32, 33, 34:
return cp437
return getcp437()
case 40, 41, 42, 44, 49, 55, 56, 57, 58, 59, 60, 61:
return cp850
return getcp850()
case 50, 51, 52, 53, 54, 71, 72, 73, 74, 75:
return cp1252
return getcp1252()
case 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96:
return cp1250
return getcp1250()
case 104, 105, 106, 107, 108:
return cp1251
return getcp1251()
case 112, 113, 114, 121, 124:
return cp1253
return getcp1253()
case 128, 129, 130:
return cp1254
return getcp1254()
case 136, 137, 138:
return cp1255
return getcp1255()
case 144, 145, 146:
return cp1256
return getcp1256()
case 152, 153, 154, 155, 156, 157, 158, 159, 160:
return cp1257
return getcp1257()
case 183, 184, 185, 186:
return cp1252
return getcp1252()
case 192, 193:
return cp932
return getcp932()
case 194, 195:
return cp949
return getcp949()
case 196, 197:
return cp950
return getcp950()
case 198, 199:
return cp936
return getcp936()
case 200:
return cp932
return getcp932()
case 201:
return cp949
return getcp949()
case 202:
return cp950
return getcp950()
case 203:
return cp936
return getcp936()
case 204, 205, 206:
return cp874
return getcp874()
case 210, 211, 212, 213, 214, 215, 216, 217:
return cp1252
return getcp1252()
}
// http://technet.microsoft.com/en-us/library/aa176553(v=sql.80).aspx
switch col.getLcid() {
case 0x001e, 0x041e:
return cp874
return getcp874()
case 0x0411, 0x10411, 0x40411:
return cp932
return getcp932()
case 0x0804, 0x1004, 0x20804:
return cp936
return getcp936()
case 0x0012, 0x0412:
return cp949
return getcp949()
case 0x0404, 0x1404, 0x0c04, 0x7c04, 0x30404, 0x21404:
return cp950
return getcp950()
case 0x041c, 0x041a, 0x0405, 0x040e, 0x104e, 0x0415, 0x0418, 0x041b, 0x0424, 0x1040e, 0x0442, 0x081A, 0x141A:
return cp1250
return getcp1250()
case 0x0423, 0x0402, 0x042f, 0x0419, 0x0c1a, 0x0422, 0x043f, 0x0444, 0x082c, 0x046D, 0x0485, 0x201A:
return cp1251
return getcp1251()
case 0x0408:
return cp1253
return getcp1253()
case 0x041f, 0x042c, 0x0443:
return cp1254
return getcp1254()
case 0x040d:
return cp1255
return getcp1255()
case 0x0401, 0x0801, 0xc01, 0x1001, 0x1401, 0x1801, 0x1c01, 0x2001, 0x2401, 0x2801, 0x2c01, 0x3001, 0x3401, 0x3801, 0x3c01, 0x4001, 0x0429, 0x0420, 0x0480, 0x048C:
return cp1256
return getcp1256()
case 0x0425, 0x0426, 0x0427, 0x0827:
return cp1257
return getcp1257()
case 0x042a:
return cp1258
return getcp1258()
case 0x0439, 0x045a, 0x0465, 0x043A, 0x0445, 0x044D, 0x0451, 0x0453, 0x0454, 0x0461, 0x0463, 0x0481:
return nil
}
return cp1252
return getcp1252()
}

func CharsetToUTF8(col Collation, s []byte) string {
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