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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !amd64 gccgo appengine
package hex
// RawEncode encodes src into EncodedLen(len(src))
// bytes of dst. As a convenience, it returns the number
// of bytes written to dst, but this value is always EncodedLen(len(src)).
// RawEncode implements hexadecimal encoding for a given alphabet.
func RawEncode(dst, src, alpha []byte) int {
if len(alpha) != 16 {
panic("invalid alphabet")
}
encodeGeneric(dst, src, alpha)
return len(src) * 2
}
// 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.
func Decode(dst, src []byte) (int, error) {
if len(src)%2 == 1 {
return 0, errLength
}
if n, ok := decodeGeneric(dst, src); !ok {
return 0, InvalidByteError(src[n])
}
return len(src) / 2, nil
}
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