forgejo-federation/modules/mahonia/euc-kr.go

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2014-09-08 05:28:01 +05:30
package mahonia
// Converters for the EUC-KR encoding.
import (
"unicode/utf8"
)
func init() {
RegisterCharset(&Charset{
Name: "EUC-KR",
Aliases: []string{
"ibm-1363",
"KS_C_5601-1987",
"KS_C_5601-1989",
"KSC_5601",
"Korean",
"iso-ir-149",
"cp1363",
"5601",
"ksc",
"windows-949",
"ibm-970",
"cp970",
"970",
"cp949",
},
NewDecoder: func() Decoder {
return decodeEucKr
},
NewEncoder: func() Encoder {
eucKrOnce.Do(reverseEucKrTable)
return encodeEucKr
},
})
}
func decodeEucKr(p []byte) (c rune, size int, status Status) {
if len(p) == 0 {
return 0, 0, NO_ROOM
}
b := p[0]
if b < 0x80 {
return rune(b), 1, SUCCESS
}
if len(p) < 2 {
return 0, 0, NO_ROOM
}
euc := int(b)<<8 + int(p[1])
c = rune(eucKrToUnicode[euc])
if c == 0 {
return utf8.RuneError, 2, INVALID_CHAR
}
return c, 2, SUCCESS
}
func encodeEucKr(p []byte, c rune) (size int, status Status) {
if len(p) == 0 {
return 0, NO_ROOM
}
if c < 0x80 {
p[0] = byte(c)
return 1, SUCCESS
}
if len(p) < 2 {
return 0, NO_ROOM
}
if c > 0xffff {
p[0] = '?'
return 1, INVALID_CHAR
}
euc := unicodeToEucKr[c]
if euc == 0 {
p[0] = '?'
return 1, INVALID_CHAR
}
p[0] = byte(euc >> 8)
p[1] = byte(euc)
return 2, SUCCESS
}