go/multibase
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Move base16 and base32 specific bits to their own file.

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This commit is contained in:
Kevin Atkinson
2017-08-28 21:32:26 -04:00
parent e81eb6473b
commit 36e6b228ae
3 changed files with 38 additions and 33 deletions
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21
base16.go Normal file
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@@ -0,0 +1,21 @@
package multibase
func hexEncodeToStringUpper(src []byte) string {
dst := make([]byte, len(src)*2)
hexEncodeUpper(dst, src)
return string(dst)
}
var hextableUpper = [16]byte{
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'A', 'B', 'C', 'D', 'E', 'F',
}
func hexEncodeUpper(dst, src []byte) int {
for i, v := range src {
dst[i*2] = hextableUpper[v>>4]
dst[i*2+1] = hextableUpper[v&0x0f]
}
return len(src) * 2
}

17
base32.go Normal file
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@@ -0,0 +1,17 @@
package multibase
import (
b32 "github.com/whyrusleeping/base32"
)
var base32StdLowerPad = b32.NewEncodingCI("abcdefghijklmnopqrstuvwxyz234567")
var base32StdLowerNoPad = base32StdLowerPad.WithPadding(b32.NoPadding)
var base32StdUpperPad = b32.NewEncodingCI("ABCDEFGHIJKLMNOPQRSTUVWXYZ234567")
var base32StdUpperNoPad = base32StdUpperPad.WithPadding(b32.NoPadding)
var base32HexLowerPad = b32.NewEncodingCI("0123456789abcdefghijklmnopqrstuv")
var base32HexLowerNoPad = base32HexLowerPad.WithPadding(b32.NoPadding)
var base32HexUpperPad = b32.NewEncodingCI("0123456789ABCDEFGHIJKLMNOPQRSTUV")
var base32HexUpperNoPad = base32HexUpperPad.WithPadding(b32.NoPadding)

33
multibase.go
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@@ -133,36 +133,3 @@ func Decode(data string) (Encoding, []byte, error) {
return -1, nil, ErrUnsupportedEncoding
}
}
var base32StdLowerPad = b32.NewEncodingCI("abcdefghijklmnopqrstuvwxyz234567")
var base32StdLowerNoPad = base32StdLowerPad.WithPadding(b32.NoPadding)
var base32StdUpperPad = b32.NewEncodingCI("ABCDEFGHIJKLMNOPQRSTUVWXYZ234567")
var base32StdUpperNoPad = base32StdUpperPad.WithPadding(b32.NoPadding)
var base32HexLowerPad = b32.NewEncodingCI("0123456789abcdefghijklmnopqrstuv")
var base32HexLowerNoPad = base32HexLowerPad.WithPadding(b32.NoPadding)
var base32HexUpperPad = b32.NewEncodingCI("0123456789ABCDEFGHIJKLMNOPQRSTUV")
var base32HexUpperNoPad = base32HexUpperPad.WithPadding(b32.NoPadding)
func hexEncodeToStringUpper(src []byte) string {
dst := make([]byte, len(src) * 2)
hexEncodeUpper(dst, src)
return string(dst)
}
var hextableUpper = [16]byte{
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'A', 'B', 'C', 'D', 'E', 'F',
}
func hexEncodeUpper(dst, src []byte) int {
for i, v := range src {
dst[i*2] = hextableUpper[v>>4]
dst[i*2+1] = hextableUpper[v&0x0f]
}
return len(src) * 2
}