1  'use strict';
 2  
 3  var isWindows = process.platform === 'win32';
 4  
 5  // Regex to split a windows path into into [dir, root, basename, name, ext]
 6  var splitWindowsRe =
 7      /^(((?:[a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/]+[^\\\/]+)?[\\\/]?)(?:[^\\\/]*[\\\/])*)((\.{1,2}|[^\\\/]+?|)(\.[^.\/\\]*|))[\\\/]*$/;
 8  
 9  var win32 = {};
10  
11  function win32SplitPath(filename) {
12    return splitWindowsRe.exec(filename).slice(1);
13  }
14  
15  win32.parse = function(pathString) {
16    if (typeof pathString !== 'string') {
17      throw new TypeError(
18          "Parameter 'pathString' must be a string, not " + typeof pathString
19      );
20    }
21    var allParts = win32SplitPath(pathString);
22    if (!allParts || allParts.length !== 5) {
23      throw new TypeError("Invalid path '" + pathString + "'");
24    }
25    return {
26      root: allParts[1],
27      dir: allParts[0] === allParts[1] ? allParts[0] : allParts[0].slice(0, -1),
28      base: allParts[2],
29      ext: allParts[4],
30      name: allParts[3]
31    };
32  };
33  
34  
35  
36  // Split a filename into [dir, root, basename, name, ext], unix version
37  // 'root' is just a slash, or nothing.
38  var splitPathRe =
39      /^((\/?)(?:[^\/]*\/)*)((\.{1,2}|[^\/]+?|)(\.[^.\/]*|))[\/]*$/;
40  var posix = {};
41  
42  
43  function posixSplitPath(filename) {
44    return splitPathRe.exec(filename).slice(1);
45  }
46  
47  
48  posix.parse = function(pathString) {
49    if (typeof pathString !== 'string') {
50      throw new TypeError(
51          "Parameter 'pathString' must be a string, not " + typeof pathString
52      );
53    }
54    var allParts = posixSplitPath(pathString);
55    if (!allParts || allParts.length !== 5) {
56      throw new TypeError("Invalid path '" + pathString + "'");
57    }
58    
59    return {
60      root: allParts[1],
61      dir: allParts[0].slice(0, -1),
62      base: allParts[2],
63      ext: allParts[4],
64      name: allParts[3],
65    };
66  };
67  
68  
69  if (isWindows)
70    module.exports = win32.parse;
71  else /* posix */
72    module.exports = posix.parse;
73  
74  module.exports.posix = posix.parse;
75  module.exports.win32 = win32.parse;