@okxweb3/coin-bitcoin
Version:
@okxweb3/coin-bitcoin is a Bitcoin SDK for building Web3 wallets and applications. It supports BTC, BSV, DOGE, LTC, and TBTC, enabling private key management, transaction signing, address generation, and inscriptions like BRC-20, Runes, CAT, and Atomicals
49 lines • 2.06 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.canAddToArray = exports.check = exports.expected = exports.encode = exports.decode = void 0;
const typeFields_1 = require("../../typeFields");
function decode(keyVal) {
if (keyVal.key[0] !== typeFields_1.InputTypes.TAP_LEAF_SCRIPT) {
throw new Error('Decode Error: could not decode tapLeafScript with key 0x' +
keyVal.key.toString('hex'));
}
if ((keyVal.key.length - 2) % 32 !== 0) {
throw new Error('Decode Error: tapLeafScript has invalid control block in key 0x' +
keyVal.key.toString('hex'));
}
const leafVersion = keyVal.value[keyVal.value.length - 1];
if ((keyVal.key[1] & 0xfe) !== leafVersion) {
throw new Error('Decode Error: tapLeafScript bad leaf version in key 0x' +
keyVal.key.toString('hex'));
}
const script = keyVal.value.slice(0, -1);
const controlBlock = keyVal.key.slice(1);
return { controlBlock, script, leafVersion };
}
exports.decode = decode;
function encode(tScript) {
const head = Buffer.from([typeFields_1.InputTypes.TAP_LEAF_SCRIPT]);
const verBuf = Buffer.from([tScript.leafVersion]);
return {
key: Buffer.concat([head, tScript.controlBlock]),
value: Buffer.concat([tScript.script, verBuf]),
};
}
exports.encode = encode;
exports.expected = '{ controlBlock: Buffer; leafVersion: number, script: Buffer; }';
function check(data) {
return (Buffer.isBuffer(data.controlBlock) &&
(data.controlBlock.length - 1) % 32 === 0 &&
(data.controlBlock[0] & 0xfe) === data.leafVersion &&
Buffer.isBuffer(data.script));
}
exports.check = check;
function canAddToArray(array, item, dupeSet) {
const dupeString = item.controlBlock.toString('hex');
if (dupeSet.has(dupeString))
return false;
dupeSet.add(dupeString);
return (array.filter(v => v.controlBlock.equals(item.controlBlock)).length === 0);
}
exports.canAddToArray = canAddToArray;
//# sourceMappingURL=tapLeafScript.js.map