ethers.js/lib.esm/wallet/utils.js

import { getBytes, getBytesCopy, hexlify, throwArgumentError, toUtf8Bytes } from "../utils/index.js";
export function looseArrayify(hexString) {
    if (typeof (hexString) === 'string' && hexString.substring(0, 2) !== '0x') {
        hexString = '0x' + hexString;
    }
    return getBytesCopy(hexString);
}
export function zpad(value, length) {
    value = String(value);
    while (value.length < length) {
        value = '0' + value;
    }
    return value;
}
export function getPassword(password) {
    if (typeof (password) === 'string') {
        return toUtf8Bytes(password, "NFKC");
    }
    return getBytesCopy(password);
}
export function spelunk(object, _path) {
    const match = _path.match(/^([a-z0-9$_.-]*)(:([a-z]+))?(!)?$/i);
    if (match == null) {
        return throwArgumentError("invalid path", "path", _path);
    }
    const path = match[1];
    const type = match[3];
    const reqd = (match[4] === "!");
    let cur = object;
    for (const comp of path.toLowerCase().split('.')) {
        // Search for a child object with a case-insensitive matching key
        if (Array.isArray(cur)) {
            if (!comp.match(/^[0-9]+$/)) {
                break;
            }
            cur = cur[parseInt(comp)];
        }
        else if (typeof (cur) === "object") {
            let found = null;
            for (const key in cur) {
                if (key.toLowerCase() === comp) {
                    found = cur[key];
                    break;
                }
            }
            cur = found;
        }
        else {
            cur = null;
        }
        if (cur == null) {
            break;
        }
    }
    if (reqd && cur == null) {
        throwArgumentError("missing required value", "path", path);
    }
    if (type && cur != null) {
        if (type === "int") {
            if (typeof (cur) === "string" && cur.match(/^-?[0-9]+$/)) {
                return parseInt(cur);
            }
            else if (Number.isSafeInteger(cur)) {
                return cur;
            }
        }
        if (type === "number") {
            if (typeof (cur) === "string" && cur.match(/^-?[0-9.]*$/)) {
                return parseFloat(cur);
            }
        }
        if (type === "data") {
            if (typeof (cur) === "string") {
                return looseArrayify(cur);
            }
        }
        if (type === "array" && Array.isArray(cur)) {
            return cur;
        }
        if (type === typeof (cur)) {
            return cur;
        }
        throwArgumentError(`wrong type found for ${type} `, "path", path);
    }
    return cur;
}
/*
export function follow(object: any, path: string): null | string {
    let currentChild = object;

    for (const comp of path.toLowerCase().split('/')) {

        // Search for a child object with a case-insensitive matching key
        let matchingChild = null;
        for (const key in currentChild) {
             if (key.toLowerCase() === comp) {
                 matchingChild = currentChild[key];
                 break;
             }
        }

        if (matchingChild === null) { return null; }

        currentChild = matchingChild;
    }

    return currentChild;
}

// "path/to/something:type!"
export function followRequired(data: any, path: string): string {
    const value = follow(data, path);
    if (value != null) { return value; }
    return logger.throwArgumentError("invalid value", `data:${ path }`,
    JSON.stringify(data));
}
*/
// See: https://www.ietf.org/rfc/rfc4122.txt (Section 4.4)
export function uuidV4(randomBytes) {
    const bytes = getBytes(randomBytes, "randomBytes");
    // Section: 4.1.3:
    // - time_hi_and_version[12:16] = 0b0100
    bytes[6] = (bytes[6] & 0x0f) | 0x40;
    // Section 4.4
    // - clock_seq_hi_and_reserved[6] = 0b0
    // - clock_seq_hi_and_reserved[7] = 0b1
    bytes[8] = (bytes[8] & 0x3f) | 0x80;
    const value = hexlify(bytes);
    return [
        value.substring(2, 10),
        value.substring(10, 14),
        value.substring(14, 18),
        value.substring(18, 22),
        value.substring(22, 34),
    ].join("-");
}
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