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-rw-r--r--vanilla/node_modules/@exodus/bytes/fallback/hex.js126
1 files changed, 0 insertions, 126 deletions
diff --git a/vanilla/node_modules/@exodus/bytes/fallback/hex.js b/vanilla/node_modules/@exodus/bytes/fallback/hex.js
deleted file mode 100644
index b3d92d0..0000000
--- a/vanilla/node_modules/@exodus/bytes/fallback/hex.js
+++ /dev/null
@@ -1,126 +0,0 @@
-import { E_STRING } from './_utils.js'
-import { nativeDecoder, nativeEncoder, decode2string } from './platform.js'
-import { encodeAscii, decodeAscii } from './latin1.js'
-
-let hexArray // array of 256 bytes converted to two-char hex strings
-let hexCodes // hexArray converted to u16 code pairs
-let dehexArray
-const _00 = 0x30_30 // '00' string in hex, the only allowed char pair to generate 0 byte
-const _ff = 0x66_66 // 'ff' string in hex, max allowed char pair (larger than 'FF' string)
-const allowed = '0123456789ABCDEFabcdef'
-
-export const E_HEX = 'Input is not a hex string'
-
-// Expects a checked Uint8Array
-export function toHex(arr) {
- if (!hexArray) hexArray = Array.from({ length: 256 }, (_, i) => i.toString(16).padStart(2, '0'))
- const length = arr.length // this helps Hermes
-
- // Only old browsers use this, barebone engines don't have TextDecoder
- // But Hermes can use this when it (hopefully) implements TextDecoder
- if (nativeDecoder) {
- if (!hexCodes) {
- hexCodes = new Uint16Array(256)
- const u8 = new Uint8Array(hexCodes.buffer, hexCodes.byteOffset, hexCodes.byteLength)
- for (let i = 0; i < 256; i++) {
- const pair = hexArray[i]
- u8[2 * i] = pair.charCodeAt(0)
- u8[2 * i + 1] = pair.charCodeAt(1)
- }
- }
-
- const oa = new Uint16Array(length)
- let i = 0
- for (const last3 = arr.length - 3; ; i += 4) {
- if (i >= last3) break // loop is fast enough for moving this here to be useful on JSC
- const x0 = arr[i]
- const x1 = arr[i + 1]
- const x2 = arr[i + 2]
- const x3 = arr[i + 3]
- oa[i] = hexCodes[x0]
- oa[i + 1] = hexCodes[x1]
- oa[i + 2] = hexCodes[x2]
- oa[i + 3] = hexCodes[x3]
- }
-
- for (; i < length; i++) oa[i] = hexCodes[arr[i]]
- return decodeAscii(oa)
- }
-
- return decode2string(arr, 0, length, hexArray)
-}
-
-export function fromHex(str) {
- if (typeof str !== 'string') throw new TypeError(E_STRING)
- if (str.length % 2 !== 0) throw new SyntaxError(E_HEX)
-
- const length = str.length / 2 // this helps Hermes in loops
- const arr = new Uint8Array(length)
-
- // Native encoder path is beneficial even for small arrays in Hermes
- if (nativeEncoder) {
- if (!dehexArray) {
- dehexArray = new Uint8Array(_ff + 1) // 26 KiB cache, >2x perf improvement on Hermes
- const u8 = new Uint8Array(2)
- const u16 = new Uint16Array(u8.buffer, u8.byteOffset, 1) // for endianess-agnostic transform
- const map = [...allowed].map((c) => [c.charCodeAt(0), parseInt(c, 16)])
- for (const [ch, vh] of map) {
- u8[0] = ch // first we read high hex char
- for (const [cl, vl] of map) {
- u8[1] = cl // then we read low hex char
- dehexArray[u16[0]] = (vh << 4) | vl
- }
- }
- }
-
- const codes = encodeAscii(str, E_HEX)
- const codes16 = new Uint16Array(codes.buffer, codes.byteOffset, codes.byteLength / 2)
- let i = 0
- for (const last3 = length - 3; i < last3; i += 4) {
- const ai = codes16[i]
- const bi = codes16[i + 1]
- const ci = codes16[i + 2]
- const di = codes16[i + 3]
- const a = dehexArray[ai]
- const b = dehexArray[bi]
- const c = dehexArray[ci]
- const d = dehexArray[di]
- if ((!a && ai !== _00) || (!b && bi !== _00) || (!c && ci !== _00) || (!d && di !== _00)) {
- throw new SyntaxError(E_HEX)
- }
-
- arr[i] = a
- arr[i + 1] = b
- arr[i + 2] = c
- arr[i + 3] = d
- }
-
- while (i < length) {
- const ai = codes16[i]
- const a = dehexArray[ai]
- if (!a && ai !== _00) throw new SyntaxError(E_HEX)
- arr[i++] = a
- }
- } else {
- if (!dehexArray) {
- // no regex input validation here, so we map all other bytes to -1 and recheck sign
- // non-ASCII chars throw already though, so we should process only 0-127
- dehexArray = new Int8Array(128).fill(-1)
- for (let i = 0; i < 16; i++) {
- const s = i.toString(16)
- dehexArray[s.charCodeAt(0)] = dehexArray[s.toUpperCase().charCodeAt(0)] = i
- }
- }
-
- let j = 0
- for (let i = 0; i < length; i++) {
- const a = str.charCodeAt(j++)
- const b = str.charCodeAt(j++)
- const res = (dehexArray[a] << 4) | dehexArray[b]
- if (res < 0 || (0x7f | a | b) !== 0x7f) throw new SyntaxError(E_HEX) // 0-127
- arr[i] = res
- }
- }
-
- return arr
-}