Function parse

lib/path.js:1062–1212

* @param {string} path * @returns {{ * dir: string; * root: string; * base: string; * name: string; * ext: string; * }}

(path)

   *  }}
   */
  parse(path) {
    validateString(path, 'path');

    const ret = { root: '', dir: '', base: '', ext: '', name: '' };
    if (path.length === 0)
      return ret;

    const len = path.length;
    let rootEnd = 0;
    let code = StringPrototypeCharCodeAt(path, 0);

    if (len === 1) {
      if (isPathSeparator(code)) {
        // `path` contains just a path separator, exit early to avoid
        // unnecessary work
        ret.root = ret.dir = path;
        return ret;
      }
      ret.base = ret.name = path;
      return ret;
    }
    // Try to match a root
    if (isPathSeparator(code)) {
      // Possible UNC root

      rootEnd = 1;
      if (isPathSeparator(StringPrototypeCharCodeAt(path, 1))) {
        // Matched double path separator at beginning
        let j = 2;
        let last = j;
        // Match 1 or more non-path separators
        while (j < len &&
               !isPathSeparator(StringPrototypeCharCodeAt(path, j))) {
          j++;
        }
        if (j < len && j !== last) {
          // Matched!
          last = j;
          // Match 1 or more path separators
          while (j < len &&
                 isPathSeparator(StringPrototypeCharCodeAt(path, j))) {
            j++;
          }
          if (j < len && j !== last) {
            // Matched!
            last = j;
            // Match 1 or more non-path separators
            while (j < len &&
                   !isPathSeparator(StringPrototypeCharCodeAt(path, j))) {
              j++;
            }
            if (j === len) {
              // We matched a UNC root only
              rootEnd = j;
            } else if (j !== last) {
              // We matched a UNC root with leftovers
              rootEnd = j + 1;
            }