ccxt
Version:
46 lines (43 loc) • 1.44 kB
JavaScript
// ----------------------------------------------------------------------------
// PLEASE DO NOT EDIT THIS FILE, IT IS GENERATED AND WILL BE OVERWRITTEN:
// https://github.com/ccxt/ccxt/blob/master/CONTRIBUTING.md#how-to-contribute-code
// EDIT THE CORRESPONDENT .ts FILE INSTEAD
/**
* About bytes32 strings...
*
* @_docloc: api/utils:Bytes32 Strings
*/
import { getBytes, toUtf8Bytes, toUtf8String, zeroPadBytes } from "./utils/index.js";
/**
* Encodes %%text%% as a Bytes32 string.
*/
export function encodeBytes32String(text) {
// Get the bytes
const bytes = toUtf8Bytes(text);
// Check we have room for null-termination
if (bytes.length > 31) {
throw new Error("bytes32 string must be less than 32 bytes");
}
// Zero-pad (implicitly null-terminates)
return zeroPadBytes(bytes, 32);
}
/**
* Encodes the Bytes32-encoded %%bytes%% into a string.
*/
export function decodeBytes32String(_bytes) {
const data = getBytes(_bytes, "bytes");
// Must be 32 bytes with a null-termination
if (data.length !== 32) {
throw new Error("invalid bytes32 - not 32 bytes long");
}
if (data[31] !== 0) {
throw new Error("invalid bytes32 string - no null terminator");
}
// Find the null termination
let length = 31;
while (data[length - 1] === 0) {
length--;
}
// Determine the string value
return toUtf8String(data.slice(0, length));
}