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: / usr / share / nodejs / tiny-glob /
Filename : sync.js
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const fs = require('fs');
const globrex = require('globrex');
const globalyzer = require('globalyzer');
const { join, resolve, relative } = require('path');
const isHidden = /(^|[\\\/])\.[^\\\/\.]/g;

let CACHE = {};

function walk(output, prefix, lexer, opts, dirname='', level=0) {
  const rgx = lexer.segments[level];
  const dir = resolve(opts.cwd, prefix, dirname);
  const files = fs.readdirSync(dir);
  const { dot, filesOnly } = opts;

  let i=0, len=files.length, file;
  let fullpath, relpath, stats, isMatch;

  for (; i < len; i++) {
    fullpath = join(dir, file=files[i]);
    relpath = dirname ? join(dirname, file) : file;
    if (!dot && isHidden.test(relpath)) continue;
    isMatch = lexer.regex.test(relpath);

    if ((stats=CACHE[relpath]) === void 0) {
      CACHE[relpath] = stats = fs.lstatSync(fullpath);
    }

    if (!stats.isDirectory()) {
      isMatch && output.push(relative(opts.cwd, fullpath));
      continue;
    }

    if (rgx && !rgx.test(file)) continue;
    !filesOnly && isMatch && output.push(join(prefix, relpath));

    walk(output, prefix, lexer, opts, relpath, rgx && rgx.toString() !== lexer.globstar && level + 1);
  }
}

/**
 * Find files using bash-like globbing.
 * All paths are normalized compared to node-glob.
 * @param {String} str Glob string
 * @param {String} [options.cwd='.'] Current working directory
 * @param {Boolean} [options.dot=false] Include dotfile matches
 * @param {Boolean} [options.absolute=false] Return absolute paths
 * @param {Boolean} [options.filesOnly=false] Do not include folders if true
 * @param {Boolean} [options.flush=false] Reset cache object
 * @returns {Array} array containing matching files
 */
module.exports = function (str, opts={}) {
  if (!str) return [];

  let glob = globalyzer(str);

  opts.cwd = opts.cwd || '.';

  if (!glob.isGlob) {
    try {
      let resolved = resolve(opts.cwd, str);
      let dirent = fs.statSync(resolved);
      if (opts.filesOnly && !dirent.isFile()) return [];

      return opts.absolute ? [resolved] : [str];
    } catch (err) {
      if (err.code != 'ENOENT') throw err;

      return [];
    }
  }

  if (opts.flush) CACHE = {};

  let matches = [];
  const { path } = globrex(glob.glob, { filepath:true, globstar:true, extended:true });

  path.globstar = path.globstar.toString();
  walk(matches, glob.base, path, opts, '.', 0);

  return opts.absolute ? matches.map(x => resolve(opts.cwd, x)) : matches;
};