nkn-sdk/lib/common/serialize.js

NKN client and wallet SDK

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.encodeBool = encodeBool;
exports.encodeBytes = encodeBytes;
exports.encodeString = encodeString;
exports.encodeUint = encodeUint;
exports.encodeUint16 = encodeUint16;
exports.encodeUint32 = encodeUint32;
exports.encodeUint64 = encodeUint64;
exports.encodeUint8 = encodeUint8;
exports.maxUintBits = exports.maxUint = void 0;
var _errors = _interopRequireDefault(require("./errors"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }
var maxUintBits = exports.maxUintBits = 48;
var maxUint = exports.maxUint = Math.pow(2, maxUintBits);
function encodeUint8(value) {
  var buf = Buffer.alloc(1, 0);
  buf.writeUInt8(value);
  return buf.toString("hex");
}
function encodeUint16(value) {
  var buf = Buffer.alloc(2, 0);
  buf.writeUInt16LE(value);
  return buf.toString("hex");
}
function encodeUint32(value) {
  var buf = Buffer.alloc(4, 0);
  buf.writeUInt32LE(value);
  return buf.toString("hex");
}
function encodeUint64(value) {
  if (value > maxUint) {
    throw new RangeError("full 64 bit integer is not supported in JavaScript");
  }
  var buf = Buffer.alloc(8, 0);
  buf.writeUIntLE(value, 0, 6);
  return buf.toString("hex");
}
function encodeUint(value) {
  if (value < 0xfd) {
    return encodeUint8(value);
  } else if (value <= 0xffff) {
    return "fd" + encodeUint16(value);
  } else if (value <= 0xffffffff) {
    return "fe" + encodeUint32(value);
  } else {
    return "ff" + encodeUint64(value);
  }
}
function encodeBytes(value) {
  var buf = Buffer.from(value);
  return encodeUint(buf.length) + buf.toString("hex");
}
function encodeString(value) {
  var buf = Buffer.from(value, "utf8");
  return encodeUint(buf.length) + buf.toString("hex");
}
function encodeBool(value) {
  return encodeUint8(value ? 1 : 0);
}