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-rw-r--r--std/encoding/hex.ts111
1 files changed, 0 insertions, 111 deletions
diff --git a/std/encoding/hex.ts b/std/encoding/hex.ts
deleted file mode 100644
index c5cb51973..000000000
--- a/std/encoding/hex.ts
+++ /dev/null
@@ -1,111 +0,0 @@
-// Ported from Go
-// https://github.com/golang/go/blob/go1.12.5/src/encoding/hex/hex.go
-// 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.
-// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
-
-const hexTable = new TextEncoder().encode("0123456789abcdef");
-
-/**
- * ErrInvalidByte takes an invalid byte and returns an Error.
- * @param byte
- */
-export function errInvalidByte(byte: number): Error {
- return new Error(
- "encoding/hex: invalid byte: " +
- new TextDecoder().decode(new Uint8Array([byte])),
- );
-}
-
-/** ErrLength returns an error about odd string length. */
-export function errLength(): Error {
- return new Error("encoding/hex: odd length hex string");
-}
-
-// fromHexChar converts a hex character into its value.
-function fromHexChar(byte: number): number {
- // '0' <= byte && byte <= '9'
- if (48 <= byte && byte <= 57) return byte - 48;
- // 'a' <= byte && byte <= 'f'
- if (97 <= byte && byte <= 102) return byte - 97 + 10;
- // 'A' <= byte && byte <= 'F'
- if (65 <= byte && byte <= 70) return byte - 65 + 10;
-
- throw errInvalidByte(byte);
-}
-
-/**
- * EncodedLen returns the length of an encoding of n source bytes. Specifically,
- * it returns n * 2.
- * @param n
- */
-export function encodedLen(n: number): number {
- return n * 2;
-}
-
-/**
- * Encode encodes `src` into `encodedLen(src.length)` bytes.
- * @param src
- */
-export function encode(src: Uint8Array): Uint8Array {
- const dst = new Uint8Array(encodedLen(src.length));
- for (let i = 0; i < dst.length; i++) {
- const v = src[i];
- dst[i * 2] = hexTable[v >> 4];
- dst[i * 2 + 1] = hexTable[v & 0x0f];
- }
- return dst;
-}
-
-/**
- * EncodeToString returns the hexadecimal encoding of `src`.
- * @param src
- */
-export function encodeToString(src: Uint8Array): string {
- return new TextDecoder().decode(encode(src));
-}
-
-/**
- * Decode decodes `src` into `decodedLen(src.length)` bytes
- * If the input is malformed an error will be thrown
- * the error.
- * @param src
- */
-export function decode(src: Uint8Array): Uint8Array {
- const dst = new Uint8Array(decodedLen(src.length));
- for (let i = 0; i < dst.length; i++) {
- const a = fromHexChar(src[i * 2]);
- const b = fromHexChar(src[i * 2 + 1]);
- dst[i] = (a << 4) | b;
- }
-
- if (src.length % 2 == 1) {
- // Check for invalid char before reporting bad length,
- // since the invalid char (if present) is an earlier problem.
- fromHexChar(src[dst.length * 2]);
- throw errLength();
- }
-
- return dst;
-}
-
-/**
- * DecodedLen returns the length of decoding `x` source bytes.
- * Specifically, it returns `x / 2`.
- * @param x
- */
-export function decodedLen(x: number): number {
- return x >>> 1;
-}
-
-/**
- * DecodeString returns the bytes represented by the hexadecimal string `s`.
- * DecodeString expects that src contains only hexadecimal characters and that
- * src has even length.
- * If the input is malformed, DecodeString will throw an error.
- * @param s the `string` to decode to `Uint8Array`
- */
-export function decodeString(s: string): Uint8Array {
- return decode(new TextEncoder().encode(s));
-}