Brunobkr/llama.cpp_AlgMor24_github

1let crypto = require('crypto')2 3let { urlAlphabet } = require('./url-alphabet/index.cjs')4 5const POOL_SIZE_MULTIPLIER = 1286let pool, poolOffset7 8let fillPool = bytes => {9  if (bytes < 0 || bytes > 1024) throw new RangeError('Wrong ID size')10  if (!pool || pool.length < bytes) {11    pool = Buffer.allocUnsafe(bytes * POOL_SIZE_MULTIPLIER)12    crypto.randomFillSync(pool)13    poolOffset = 014  } else if (poolOffset + bytes > pool.length) {15    crypto.randomFillSync(pool)16    poolOffset = 017  }18  poolOffset += bytes19}20 21let random = bytes => {22  fillPool((bytes |= 0))23  return pool.subarray(poolOffset - bytes, poolOffset)24}25 26let customRandom = (alphabet, defaultSize, getRandom) => {27  let mask = (2 << (31 - Math.clz32((alphabet.length - 1) | 1))) - 128 29 30  let step = Math.ceil((1.6 * mask * defaultSize) / alphabet.length)31 32  return (size = defaultSize) => {33    if (size <= 0) return ''34    let id = ''35    while (true) {36      let bytes = getRandom(step)37      let i = step38      while (i--) {39        id += alphabet[bytes[i] & mask] || ''40        if (id.length === size) return id41      }42    }43  }44}45 46let customAlphabet = (alphabet, size = 21) =>47  customRandom(alphabet, size, random)48 49let nanoid = (size = 21) => {50  fillPool((size |= 0))51  let id = ''52  for (let i = poolOffset - size; i < poolOffset; i++) {53    id += urlAlphabet[pool[i] & 63]54  }55  return id56}57 58module.exports = { nanoid, customAlphabet, customRandom, urlAlphabet, random }59