@unique-nft/utils/hashes.mjs

A tiny library to work with Substrate and Ethereum addresses and do some more

import {
  __export
} from "./chunk-SMH5LAMQ.mjs";

// src/Hashes/xxhash.ts
var xxhash_exports = {};
__export(xxhash_exports, {
  encodeSubstrateStorageKey: () => encodeSubstrateStorageKey,
  u8aConcat: () => u8aConcat,
  xxhash64: () => xxhash64,
  xxhashOfU8a: () => xxhashOfU8a,
  xxhashOfU8aAsHex: () => xxhashOfU8aAsHex
});
import { HexString, Utf8 } from "utf-helpers";
function u8aConcat(u8as, length = 0) {
  const count = u8as.length;
  let offset = 0;
  if (!length) {
    for (let i = 0; i < count; i++) {
      length += u8as[i].length;
    }
  }
  const result = new Uint8Array(length);
  for (let i = 0; i < count; i++) {
    result.set(u8as[i], offset);
    offset += u8as[i].length;
  }
  return result;
}
var P64_1 = BigInt("11400714785074694791");
var P64_2 = BigInt("14029467366897019727");
var P64_3 = BigInt("1609587929392839161");
var P64_4 = BigInt("9650029242287828579");
var P64_5 = BigInt("2870177450012600261");
var U64 = BigInt("0xffffffffffffffff");
var _0n = 0n;
var _1n = 1n;
var _7n = 7n;
var _11n = 11n;
var _12n = 12n;
var _16n = 16n;
var _18n = 18n;
var _23n = 23n;
var _27n = 27n;
var _29n = 29n;
var _31n = 31n;
var _32n = 32n;
var _33n = 33n;
var _64n = 64n;
var _256n = 256n;
function rotl(a, b) {
  const c = a & U64;
  return (c << b | c >> _64n - b) & U64;
}
function fromU8a(u8a, p, count) {
  const bigints = new Array(count);
  let offset = 0;
  for (let i = 0; i < count; i++, offset += 2) {
    bigints[i] = BigInt(u8a[p + offset] | u8a[p + 1 + offset] << 8);
  }
  let result = _0n;
  for (let i = count - 1; i >= 0; i--) {
    result = (result << _16n) + bigints[i];
  }
  return result;
}
function init(seed, input) {
  const state = {
    seed,
    u8a: new Uint8Array(32),
    u8asize: 0,
    v1: seed + P64_1 + P64_2,
    v2: seed + P64_2,
    v3: seed,
    v4: seed - P64_1
  };
  if (input.length < 32) {
    state.u8a.set(input);
    state.u8asize = input.length;
    return state;
  }
  const limit = input.length - 32;
  let p = 0;
  if (limit >= 0) {
    const adjustV = (v) => P64_1 * rotl(v + P64_2 * fromU8a(input, p, 4), _31n);
    do {
      state.v1 = adjustV(state.v1);
      p += 8;
      state.v2 = adjustV(state.v2);
      p += 8;
      state.v3 = adjustV(state.v3);
      p += 8;
      state.v4 = adjustV(state.v4);
      p += 8;
    } while (p <= limit);
  }
  if (p < input.length) {
    state.u8a.set(input.subarray(p, input.length));
    state.u8asize = input.length - p;
  }
  return state;
}
function xxhash64(input, initSeed) {
  const { seed, u8a, u8asize, v1, v2, v3, v4 } = init(BigInt(initSeed), input);
  let p = 0;
  let h64 = U64 & BigInt(input.length) + (input.length >= 32 ? ((((rotl(v1, _1n) + rotl(v2, _7n) + rotl(v3, _12n) + rotl(v4, _18n) ^ P64_1 * rotl(v1 * P64_2, _31n)) * P64_1 + P64_4 ^ P64_1 * rotl(v2 * P64_2, _31n)) * P64_1 + P64_4 ^ P64_1 * rotl(v3 * P64_2, _31n)) * P64_1 + P64_4 ^ P64_1 * rotl(v4 * P64_2, _31n)) * P64_1 + P64_4 : seed + P64_5);
  while (p <= u8asize - 8) {
    h64 = U64 & P64_4 + P64_1 * rotl(h64 ^ P64_1 * rotl(P64_2 * fromU8a(u8a, p, 4), _31n), _27n);
    p += 8;
  }
  if (p + 4 <= u8asize) {
    h64 = U64 & P64_3 + P64_2 * rotl(h64 ^ P64_1 * fromU8a(u8a, p, 2), _23n);
    p += 4;
  }
  while (p < u8asize) {
    h64 = U64 & P64_1 * rotl(h64 ^ P64_5 * BigInt(u8a[p++]), _11n);
  }
  h64 = U64 & P64_2 * (h64 ^ h64 >> _33n);
  h64 = U64 & P64_3 * (h64 ^ h64 >> _29n);
  h64 = U64 & (h64 ^ h64 >> _32n);
  const result = new Uint8Array(8);
  for (let i = 7; i >= 0; i--) {
    result[i] = Number(h64 % _256n);
    h64 = h64 / _256n;
  }
  return result;
}
function xxhashOfU8a(data, bitLength = 64) {
  const rounds = Math.ceil(bitLength / 64);
  const result = new Uint8Array(rounds * 8);
  for (let seed = 0; seed < rounds; seed++) {
    result.set(xxhash64(data, seed).reverse(), seed * 8);
  }
  return result;
}
var xxhashOfU8aAsHex = (data, bitLength = 64) => HexString.fromU8a(xxhashOfU8a(data, bitLength));
var encodeSubstrateStorageKey = (entries) => {
  const hashes = entries.map((entry) => xxhashOfU8a(Utf8.stringToU8a(entry), 128));
  return HexString.fromU8a(u8aConcat(hashes));
};

// src/Hashes/index.ts
var encodeSubstrateStorageKey2 = encodeSubstrateStorageKey;
export {
  xxhash_exports as Xxhash,
  encodeSubstrateStorageKey2 as encodeSubstrateStorageKey
};
//# sourceMappingURL=hashes.mjs.map