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package mahonia
import (
"unicode/utf8"
)
// Converters for Microsoft's version of the EUC-JP encoding
func init() {
RegisterCharset(&Charset{
Name: "cp51932",
Aliases: []string{"windows-51932"},
NewDecoder: func() Decoder {
return decodeCP51932
},
NewEncoder: func() Encoder {
msJISTable.Reverse()
return encodeCP51932
},
})
}
func decodeCP51932(p []byte) (c rune, size int, status Status) {
if len(p) == 0 {
return 0, 0, NO_ROOM
}
b := p[0]
switch {
case b < 0x80:
return rune(b), 1, SUCCESS
case b == 0x8e:
if len(p) < 2 {
return 0, 0, NO_ROOM
}
b2 := p[1]
if b2 < 0xa1 || b2 > 0xdf {
return utf8.RuneError, 1, INVALID_CHAR
}
return rune(b2) + (0xff61 - 0xa1), 2, SUCCESS
case 0xa1 <= b && b <= 0xfe:
return msJISTable.DecodeHigh(p)
}
return utf8.RuneError, 1, INVALID_CHAR
}
func encodeCP51932(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
}
if 0xff61 <= c && c <= 0xff9f {
p[0] = 0x8e
p[1] = byte(c - (0xff61 - 0xa1))
return 2, SUCCESS
}
return msJISTable.EncodeHigh(p, c)
}
|
