web3-utils
Version:
Collection of utility functions used in web3.js.
58 lines (55 loc) • 1.98 kB
JavaScript
;
/*
This file is part of web3.js.
web3.js is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
web3.js is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with web3.js. If not, see <http://www.gnu.org/licenses/>.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.isUint8Array = isUint8Array;
exports.uint8ArrayConcat = uint8ArrayConcat;
exports.uint8ArrayEquals = uint8ArrayEquals;
function isUint8Array(data) {
var _a, _b;
return (data instanceof Uint8Array ||
((_a = data === null || data === void 0 ? void 0 : data.constructor) === null || _a === void 0 ? void 0 : _a.name) === 'Uint8Array' ||
((_b = data === null || data === void 0 ? void 0 : data.constructor) === null || _b === void 0 ? void 0 : _b.name) === 'Buffer');
}
function uint8ArrayConcat(...parts) {
const length = parts.reduce((prev, part) => {
const agg = prev + part.length;
return agg;
}, 0);
const result = new Uint8Array(length);
let offset = 0;
for (const part of parts) {
result.set(part, offset);
offset += part.length;
}
return result;
}
/**
* Returns true if the two passed Uint8Arrays have the same content
*/
function uint8ArrayEquals(a, b) {
if (a === b) {
return true;
}
if (a.byteLength !== b.byteLength) {
return false;
}
for (let i = 0; i < a.byteLength; i += 1) {
if (a[i] !== b[i]) {
return false;
}
}
return true;
}
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