gx优化

chenyc

2025-05-29 92f69c57b920cf62ecc9f15f9ed196fa26dbf2ac

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'use strict';
 
const fs = require('fs');
const path = require('path');
const bitfield = require('sparse-bitfield');
 
/* eslint-disable-next-line security/detect-non-literal-fs-filename */
const memory = fs.readFileSync(path.resolve(__dirname, '../code-points.mem'));
let offset = 0;
 
/**
 * Loads each code points sequence from buffer.
 * @returns {bitfield}
 */
function read() {
  const size = memory.readUInt32BE(offset);
  offset += 4;
 
  const codepoints = memory.slice(offset, offset + size);
  offset += size;
 
  return bitfield({ buffer: codepoints });
}
 
const unassigned_code_points = read();
const commonly_mapped_to_nothing = read();
const non_ASCII_space_characters = read();
const prohibited_characters = read();
const bidirectional_r_al = read();
const bidirectional_l = read();
 
module.exports = {
  unassigned_code_points,
  commonly_mapped_to_nothing,
  non_ASCII_space_characters,
  prohibited_characters,
  bidirectional_r_al,
  bidirectional_l,
};