mirror of
https://github.com/pezkuwichain/pezkuwi-api.git
synced 2026-10-22 11:46:17 +00:00
Satoshi Qazi Muhammed
a9d1026736
The pezkuwi-dev build treats any package with a src/ directory as its own: it requires our license header on every file and builds it. These are upstream files that must stay byte-identical to the source embedded in dist/, so they live in upstream-src/ instead, which neither the build nor the root tsconfig picks up.
58 lines
1.1 KiB
TypeScript
58 lines
1.1 KiB
TypeScript
// https://jsben.ch/uWZw3
|
|
const HEX_STR = "0123456789abcdef"
|
|
export function toHex(bytes: Uint8Array): string {
|
|
const result = new Array<string>(bytes.length + 1)
|
|
|
|
result[0] = "0x"
|
|
|
|
for (let i = 0; i < bytes.length; ) {
|
|
const b = bytes[i++]
|
|
result[i] = HEX_STR[b >> 4] + HEX_STR[b & 15]
|
|
}
|
|
|
|
return result.join("")
|
|
}
|
|
|
|
// https://jsben.ch/URe1X
|
|
const HEX_MAP: Record<string, number> = {
|
|
0: 0,
|
|
1: 1,
|
|
2: 2,
|
|
3: 3,
|
|
4: 4,
|
|
5: 5,
|
|
6: 6,
|
|
7: 7,
|
|
8: 8,
|
|
9: 9,
|
|
a: 10,
|
|
b: 11,
|
|
c: 12,
|
|
d: 13,
|
|
e: 14,
|
|
f: 15,
|
|
A: 10,
|
|
B: 11,
|
|
C: 12,
|
|
D: 13,
|
|
E: 14,
|
|
F: 15,
|
|
}
|
|
export function fromHex(hexString: string): Uint8Array {
|
|
const isOdd = hexString.length % 2
|
|
const base = (hexString[1] === "x" ? 2 : 0) + isOdd
|
|
const nBytes = (hexString.length - base) / 2 + isOdd
|
|
const bytes = new Uint8Array(nBytes)
|
|
|
|
if (isOdd) bytes[0] = 0 | HEX_MAP[hexString[2]]
|
|
|
|
for (let i = 0; i < nBytes; ) {
|
|
const idx = base + i * 2
|
|
const a = HEX_MAP[hexString[idx]]
|
|
const b = HEX_MAP[hexString[idx + 1]]
|
|
bytes[isOdd + i++] = (a << 4) | b
|
|
}
|
|
|
|
return bytes
|
|
}
|