1'use strict'; 2 3var isWindows = process.platform === 'win32'; 4 5// Regex to split a windows path into three parts: [*, device, slash, 6// tail] windows-only 7var splitDeviceRe = 8 /^([a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/]+[^\\\/]+)?([\\\/])?([\s\S]*?)$/; 9 10// Regex to split the tail part of the above into [*, dir, basename, ext] 11var splitTailRe = 12 /^([\s\S]*?)((?:\.{1,2}|[^\\\/]+?|)(\.[^.\/\\]*|))(?:[\\\/]*)$/; 13 14var win32 = {}; 15 16// Function to split a filename into [root, dir, basename, ext] 17function win32SplitPath(filename) { 18 // Separate device+slash from tail 19 var result = splitDeviceRe.exec(filename), 20 device = (result[1] || '') + (result[2] || ''), 21 tail = result[3] || ''; 22 // Split the tail into dir, basename and extension 23 var result2 = splitTailRe.exec(tail), 24 dir = result2[1], 25 basename = result2[2], 26 ext = result2[3]; 27 return [device, dir, basename, ext]; 28} 29 30win32.parse = function(pathString) { 31 if (typeof pathString !== 'string') { 32 throw new TypeError( 33 "Parameter 'pathString' must be a string, not " + typeof pathString 34 ); 35 } 36 var allParts = win32SplitPath(pathString); 37 if (!allParts || allParts.length !== 4) { 38 throw new TypeError("Invalid path '" + pathString + "'"); 39 } 40 return { 41 root: allParts[0], 42 dir: allParts[0] + allParts[1].slice(0, -1), 43 base: allParts[2], 44 ext: allParts[3], 45 name: allParts[2].slice(0, allParts[2].length - allParts[3].length) 46 }; 47}; 48 49 50 51// Split a filename into [root, dir, basename, ext], unix version 52// 'root' is just a slash, or nothing. 53var splitPathRe = 54 /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/; 55var posix = {}; 56 57 58function posixSplitPath(filename) { 59 return splitPathRe.exec(filename).slice(1); 60} 61 62 63posix.parse = function(pathString) { 64 if (typeof pathString !== 'string') { 65 throw new TypeError( 66 "Parameter 'pathString' must be a string, not " + typeof pathString 67 ); 68 } 69 var allParts = posixSplitPath(pathString); 70 if (!allParts || allParts.length !== 4) { 71 throw new TypeError("Invalid path '" + pathString + "'"); 72 } 73 allParts[1] = allParts[1] || ''; 74 allParts[2] = allParts[2] || ''; 75 allParts[3] = allParts[3] || ''; 76 77 return { 78 root: allParts[0], 79 dir: allParts[0] + allParts[1].slice(0, -1), 80 base: allParts[2], 81 ext: allParts[3], 82 name: allParts[2].slice(0, allParts[2].length - allParts[3].length) 83 }; 84}; 85 86 87if (isWindows) 88 module.exports = win32.parse; 89else /* posix */ 90 module.exports = posix.parse; 91 92module.exports.posix = posix.parse; 93module.exports.win32 = win32.parse; 94