// Copyright 2020 The CUE Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Copyright 2018 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.

//go:generate go run cuelang.org/go/internal/cmd/qgo -stripstr -exclude=Decode$,Encode$,EncodeToString,Dumper extract encoding/hex

package hex

import "encoding/hex"

// EncodedLen returns the length of an encoding of n source bytes.
// Specifically, it returns n * 2.
func EncodedLen(n int) int {
	return hex.EncodedLen(n)
}

// DecodedLen returns the length of a decoding of x source bytes.
// Specifically, it returns x / 2.
func DecodedLen(x int) int {
	return hex.DecodedLen(x)
}

// Decode returns the bytes represented by the hexadecimal string s.
//
// Decode expects that src contains only hexadecimal
// characters and that src has even length.
// If the input is malformed, Decode returns
// the bytes decoded before the error.
func Decode(s string) ([]byte, error) {
	return hex.DecodeString(s)
}

// Dump returns a string that contains a hex dump of the given data. The format
// of the hex dump matches the output of `hexdump -C` on the command line.
func Dump(data []byte) string {
	return hex.Dump(data)
}