sensible-sdk
Version:
Sensible-SDK
127 lines (126 loc) • 4.74 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseDataPart = exports.newDataPart = exports.getCodeHash = exports.getGenesis = exports.getTokenIndex = exports.getSellerAddress = exports.getSatoshisPrice = exports.getNftID = exports.PROTO_VERSION = void 0;
const BN = require("../../bn.js");
const proto = require("../../common/protoheader");
const scryptlib_1 = require("../../scryptlib");
exports.PROTO_VERSION = 1;
const NFT_ID_LEN = 20;
const SATOSHIS_PRICE_LEN = 8;
const SELLER_ADDRESS_LEN = 20;
const TOKEN_INDEX_LEN = 8;
const GENESIS_LEN = 20;
const CODEHASH_LEN = 20;
const NFT_ID_OFFSET = NFT_ID_LEN + proto.getHeaderLen();
const SATOSHIS_PRICE_OFFSET = SATOSHIS_PRICE_LEN + NFT_ID_OFFSET;
const SELLER_ADDRESS_OFFSET = SELLER_ADDRESS_LEN + SATOSHIS_PRICE_OFFSET;
const TOKEN_INDEX_OFFSET = TOKEN_INDEX_LEN + SELLER_ADDRESS_OFFSET;
const GENESIS_OFFSET = GENESIS_LEN + TOKEN_INDEX_OFFSET;
const CODEHASH_OFFSET = CODEHASH_LEN + GENESIS_OFFSET;
function getNftID(script) {
return (0, scryptlib_1.toHex)(script.slice(script.length - NFT_ID_OFFSET, script.length - NFT_ID_OFFSET + NFT_ID_LEN));
}
exports.getNftID = getNftID;
function getSatoshisPrice(script) {
if (script.length < SATOSHIS_PRICE_OFFSET)
return BN.Zero;
return BN.fromBuffer(script.slice(script.length - SATOSHIS_PRICE_OFFSET, script.length - SATOSHIS_PRICE_OFFSET + SATOSHIS_PRICE_LEN), { endian: "little" });
}
exports.getSatoshisPrice = getSatoshisPrice;
function getSellerAddress(script) {
if (script.length < SELLER_ADDRESS_OFFSET)
return "";
return script
.slice(script.length - SELLER_ADDRESS_OFFSET, script.length - SELLER_ADDRESS_OFFSET + SELLER_ADDRESS_LEN)
.toString("hex");
}
exports.getSellerAddress = getSellerAddress;
function getTokenIndex(script) {
if (script.length < TOKEN_INDEX_OFFSET)
return BN.Zero;
return BN.fromBuffer(script.slice(script.length - TOKEN_INDEX_OFFSET, script.length - TOKEN_INDEX_OFFSET + TOKEN_INDEX_LEN), { endian: "little" });
}
exports.getTokenIndex = getTokenIndex;
function getGenesis(script) {
if (script.length < GENESIS_OFFSET)
return "";
return script
.slice(script.length - GENESIS_OFFSET, script.length - GENESIS_OFFSET + GENESIS_LEN)
.toString("hex");
}
exports.getGenesis = getGenesis;
function getCodeHash(script) {
if (script.length < CODEHASH_OFFSET)
return "";
return script
.slice(script.length - CODEHASH_OFFSET, script.length - CODEHASH_OFFSET + CODEHASH_LEN)
.toString("hex");
}
exports.getCodeHash = getCodeHash;
function newDataPart({ codehash, genesis, tokenIndex, sellerAddress, satoshisPrice, nftID, protoVersion, protoType, }) {
const codehashBuf = Buffer.alloc(20, 0);
if (nftID) {
codehashBuf.write(codehash, "hex");
}
const genesisBuf = Buffer.alloc(20, 0);
if (nftID) {
genesisBuf.write(genesis, "hex");
}
let tokenIndexBuf = Buffer.alloc(TOKEN_INDEX_LEN, 0);
if (tokenIndex) {
tokenIndexBuf = tokenIndex.toBuffer({ endian: "little", size: 8 });
}
const sellerAddressBuf = Buffer.alloc(SELLER_ADDRESS_LEN, 0);
if (sellerAddress) {
sellerAddressBuf.write(sellerAddress, "hex");
}
let priceBuf = Buffer.alloc(SATOSHIS_PRICE_LEN, 0);
if (satoshisPrice) {
priceBuf = satoshisPrice.toBuffer({ endian: "little", size: 8 });
}
const nftIDBuf = Buffer.alloc(NFT_ID_LEN, 0);
if (nftID) {
nftIDBuf.write(nftID, "hex");
}
const protoVersionBuf = Buffer.alloc(proto.PROTO_VERSION_LEN);
if (protoVersion) {
protoVersionBuf.writeUInt32LE(protoVersion);
}
const protoTypeBuf = Buffer.alloc(proto.PROTO_TYPE_LEN, 0);
if (protoType) {
protoTypeBuf.writeUInt32LE(protoType);
}
return Buffer.concat([
codehashBuf,
genesisBuf,
tokenIndexBuf,
sellerAddressBuf,
priceBuf,
nftIDBuf,
protoVersionBuf,
protoTypeBuf,
proto.PROTO_FLAG,
]);
}
exports.newDataPart = newDataPart;
function parseDataPart(scriptBuf) {
let codehash = getCodeHash(scriptBuf);
let genesis = getGenesis(scriptBuf);
let tokenIndex = getTokenIndex(scriptBuf);
let sellerAddress = getSellerAddress(scriptBuf);
let satoshisPrice = getSatoshisPrice(scriptBuf);
let nftID = getNftID(scriptBuf);
let protoVersion = proto.getProtoVersioin(scriptBuf);
let protoType = proto.getProtoType(scriptBuf);
return {
codehash,
genesis,
tokenIndex,
sellerAddress,
satoshisPrice,
nftID,
protoVersion,
protoType,
};
}
exports.parseDataPart = parseDataPart;