diff options
Diffstat (limited to 'libgo/go/encoding/hex/hex.go')
| -rw-r--r-- | libgo/go/encoding/hex/hex.go | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/libgo/go/encoding/hex/hex.go b/libgo/go/encoding/hex/hex.go index d1fc7024a9..b43c1c4b45 100644 --- a/libgo/go/encoding/hex/hex.go +++ b/libgo/go/encoding/hex/hex.go @@ -12,13 +12,17 @@ import ( "io" ) -const hextable = "0123456789abcdef" +var hextable = [16]byte{ + '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', + 'a', 'b', 'c', 'd', 'e', 'f', +} // EncodedLen returns the length of an encoding of n source bytes. +// Specifically, it returns n * 2. func EncodedLen(n int) int { return n * 2 } // Encode encodes src into EncodedLen(len(src)) -// bytes of dst. As a convenience, it returns the number +// bytes of dst. As a convenience, it returns the number // of bytes written to dst, but this value is always EncodedLen(len(src)). // Encode implements hexadecimal encoding. func Encode(dst, src []byte) int { @@ -40,12 +44,15 @@ func (e InvalidByteError) Error() string { return fmt.Sprintf("encoding/hex: invalid byte: %#U", rune(e)) } +// DecodedLen returns the length of a decoding of x source bytes. +// Specifically, it returns x / 2. func DecodedLen(x int) int { return x / 2 } -// Decode decodes src into DecodedLen(len(src)) bytes, returning the actual -// number of bytes written to dst. +// Decode decodes src into DecodedLen(len(src)) bytes, +// returning the actual number of bytes written to dst. // -// If Decode encounters invalid input, it returns an error describing the failure. +// Decode expects that src contain only hexadecimal +// characters and that src should have an even length. func Decode(dst, src []byte) (int, error) { if len(src)%2 == 1 { return 0, ErrLength @@ -105,7 +112,7 @@ func Dump(data []byte) string { dumper := Dumper(&buf) dumper.Write(data) dumper.Close() - return string(buf.Bytes()) + return buf.String() } // Dumper returns a WriteCloser that writes a hex dump of all written data to |