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1# upath v1.2.0
2
3[![Build Status](https://travis-ci.org/anodynos/upath.svg?branch=master)](https://travis-ci.org/anodynos/upath)
4[![Up to date Status](https://david-dm.org/anodynos/upath.png)](https://david-dm.org/anodynos/upath)
5
6A drop-in replacement / proxy to nodejs's `path` that:
7
8 * Replaces the windows `\` with the unix `/` in all string params & results. This has significant positives - see below.
9
10 * Adds **filename extensions** functions `addExt`, `trimExt`, `removeExt`, `changeExt`, and `defaultExt`.
11
12 * Add a `normalizeSafe` function to preserve any meaningful leading `./` & a `normalizeTrim` which additionally trims any useless ending `/`.
13
14 * Plus a helper `toUnix` that simply converts `\` to `/` and consolidates duplicates.
15
16**Useful note: these docs are actually auto generated from [specs](https://github.com/anodynos/upath/blob/master/source/spec/upath-spec.coffee), running on Linux.**
17
18Notes:
19
20 * `upath.sep` is set to `'/'` for seamless replacement (as of 1.0.3).
21
22 * upath has no runtime dependencies, except built-in `path` (as of 1.0.4)
23
24 * travis-ci tested in node versions 4 to 12
25
26
27## Why ?
28
29Normal `path` doesn't convert paths to a unified format (ie `/`) before calculating paths (`normalize`, `join`), which can lead to numerous problems.
30Also path joining, normalization etc on the two formats is not consistent, depending on where it runs. Running `path` on Windows yields different results than when it runs on Linux / Mac.
31
32In general, if you code your paths logic while developing on Unix/Mac and it runs on Windows, you may run into problems when using `path`.
33
34Note that using **Unix `/` on Windows** works perfectly inside nodejs (and other languages), so there's no reason to stick to the Windows legacy at all.
35
36##### Examples / specs
37
38
39Check out the different (improved) behavior to vanilla `path`:
40
41 `upath.normalize(path)` --returns-->
42
43 ✓ `'c:/windows/nodejs/path'` ---> `'c:/windows/nodejs/path'` // equal to `path.normalize()`
44 ✓ `'c:/windows/../nodejs/path'` ---> `'c:/nodejs/path'` // equal to `path.normalize()`
45 ✓ `'c:\\windows\\nodejs\\path'` ---> `'c:/windows/nodejs/path'` // `path.normalize()` gives `'c:\windows\nodejs\path'`
46 ✓ `'c:\\windows\\..\\nodejs\\path'` ---> `'c:/nodejs/path'` // `path.normalize()` gives `'c:\windows\..\nodejs\path'`
47 ✓ `'//windows\\unix/mixed'` ---> `'/windows/unix/mixed'` // `path.normalize()` gives `'/windows\unix/mixed'`
48 ✓ `'\\windows//unix/mixed'` ---> `'/windows/unix/mixed'` // `path.normalize()` gives `'\windows/unix/mixed'`
49 ✓ `'////\\windows\\..\\unix/mixed/'` ---> `'/unix/mixed/'` // `path.normalize()` gives `'/\windows\..\unix/mixed/'`
50
51
52Joining paths can also be a problem:
53
54 `upath.join(paths...)` --returns-->
55
56 ✓ `'some/nodejs/deep', '../path'` ---> `'some/nodejs/path'` // equal to `path.join()`
57 ✓ `'some/nodejs\\windows', '../path'` ---> `'some/nodejs/path'` // `path.join()` gives `'some/path'`
58 ✓ `'some\\windows\\only', '..\\path'` ---> `'some/windows/path'` // `path.join()` gives `'some\windows\only/..\path'`
59
60
61Parsing with `path.parse()` should also be consistent across OSes:
62
63 `upath.parse(path)` --returns-->
64
65 ✓ `'c:\Windows\Directory\somefile.ext'` ---> `{ root: '', dir: 'c:/Windows/Directory', base: 'somefile.ext', ext: '.ext', name: 'somefile' }`
66 // `path.parse()` gives `'{ root: '', dir: '', base: 'c:\\Windows\\Directory\\somefile.ext', ext: '.ext', name: 'c:\\Windows\\Directory\\somefile' }'`
67 ✓ `'/root/of/unix/somefile.ext'` ---> `{ root: '/', dir: '/root/of/unix', base: 'somefile.ext', ext: '.ext', name: 'somefile' }` // equal to `path.parse()`
68
69
70## Added functions
71
72
73#### `upath.toUnix(path)`
74
75Just converts all `` to `/` and consolidates duplicates, without performing any normalization.
76
77##### Examples / specs
78
79 `upath.toUnix(path)` --returns-->
80
81 ✓ `'.//windows\//unix//mixed////'` ---> `'./windows/unix/mixed/'`
82 ✓ `'..///windows\..\\unix/mixed'` ---> `'../windows/../unix/mixed'`
83
84
85#### `upath.normalizeSafe(path)`
86
87Exactly like `path.normalize(path)`, but it keeps the first meaningful `./`.
88
89Note that the unix `/` is returned everywhere, so windows `\` is always converted to unix `/`.
90
91##### Examples / specs & how it differs from vanilla `path`
92
93 `upath.normalizeSafe(path)` --returns-->
94
95 ✓ `''` ---> `'.'` // equal to `path.normalize()`
96 ✓ `'.'` ---> `'.'` // equal to `path.normalize()`
97 ✓ `'./'` ---> `'./'` // equal to `path.normalize()`
98 ✓ `'.//'` ---> `'./'` // equal to `path.normalize()`
99 ✓ `'.\\'` ---> `'./'` // `path.normalize()` gives `'.\'`
100 ✓ `'.\\//'` ---> `'./'` // `path.normalize()` gives `'.\/'`
101 ✓ `'./..'` ---> `'..'` // equal to `path.normalize()`
102 ✓ `'.//..'` ---> `'..'` // equal to `path.normalize()`
103 ✓ `'./../'` ---> `'../'` // equal to `path.normalize()`
104 ✓ `'.\\..\\'` ---> `'../'` // `path.normalize()` gives `'.\..\'`
105 ✓ `'./../dep'` ---> `'../dep'` // equal to `path.normalize()`
106 ✓ `'../dep'` ---> `'../dep'` // equal to `path.normalize()`
107 ✓ `'../path/dep'` ---> `'../path/dep'` // equal to `path.normalize()`
108 ✓ `'../path/../dep'` ---> `'../dep'` // equal to `path.normalize()`
109 ✓ `'dep'` ---> `'dep'` // equal to `path.normalize()`
110 ✓ `'path//dep'` ---> `'path/dep'` // equal to `path.normalize()`
111 ✓ `'./dep'` ---> `'./dep'` // `path.normalize()` gives `'dep'`
112 ✓ `'./path/dep'` ---> `'./path/dep'` // `path.normalize()` gives `'path/dep'`
113 ✓ `'./path/../dep'` ---> `'./dep'` // `path.normalize()` gives `'dep'`
114 ✓ `'.//windows\\unix/mixed/'` ---> `'./windows/unix/mixed/'` // `path.normalize()` gives `'windows\unix/mixed/'`
115 ✓ `'..//windows\\unix/mixed'` ---> `'../windows/unix/mixed'` // `path.normalize()` gives `'../windows\unix/mixed'`
116 ✓ `'windows\\unix/mixed/'` ---> `'windows/unix/mixed/'` // `path.normalize()` gives `'windows\unix/mixed/'`
117 ✓ `'..//windows\\..\\unix/mixed'` ---> `'../unix/mixed'` // `path.normalize()` gives `'../windows\..\unix/mixed'`
118
119
120#### `upath.normalizeTrim(path)`
121
122Exactly like `path.normalizeSafe(path)`, but it trims any useless ending `/`.
123
124##### Examples / specs
125
126 `upath.normalizeTrim(path)` --returns-->
127
128 ✓ `'./'` ---> `'.'` // `upath.normalizeSafe()` gives `'./'`
129 ✓ `'./../'` ---> `'..'` // `upath.normalizeSafe()` gives `'../'`
130 ✓ `'./../dep/'` ---> `'../dep'` // `upath.normalizeSafe()` gives `'../dep/'`
131 ✓ `'path//dep\\'` ---> `'path/dep'` // `upath.normalizeSafe()` gives `'path/dep/'`
132 ✓ `'.//windows\\unix/mixed/'` ---> `'./windows/unix/mixed'` // `upath.normalizeSafe()` gives `'./windows/unix/mixed/'`
133
134
135#### `upath.joinSafe([path1][, path2][, ...])`
136
137Exactly like `path.join()`, but it keeps the first meaningful `./`.
138
139Note that the unix `/` is returned everywhere, so windows `\` is always converted to unix `/`.
140
141##### Examples / specs & how it differs from vanilla `path`
142
143 `upath.joinSafe(path)` --returns-->
144
145 ✓ `'some/nodejs/deep', '../path'` ---> `'some/nodejs/path'` // equal to `path.join()`
146 ✓ `'./some/local/unix/', '../path'` ---> `'./some/local/path'` // `path.join()` gives `'some/local/path'`
147 ✓ `'./some\\current\\mixed', '..\\path'` ---> `'./some/current/path'` // `path.join()` gives `'some\current\mixed/..\path'`
148 ✓ `'../some/relative/destination', '..\\path'` ---> `'../some/relative/path'` // `path.join()` gives `'../some/relative/destination/..\path'`
149
150
151## Added functions for *filename extension* manipulation.
152
153**Happy notes:**
154
155 In all functions you can:
156
157 * use both `.ext` & `ext` - the dot `.` on the extension is always adjusted correctly.
158
159 * omit the `ext` param (pass null/undefined/empty string) and the common sense thing will happen.
160
161 * ignore specific extensions from being considered as valid ones (eg `.min`, `.dev` `.aLongExtIsNotAnExt` etc), hence no trimming or replacement takes place on them.
162
163
164
165#### `upath.addExt(filename, [ext])`
166
167Adds `.ext` to `filename`, but only if it doesn't already have the exact extension.
168
169##### Examples / specs
170
171 `upath.addExt(filename, 'js')` --returns-->
172
173 ✓ `'myfile/addExt'` ---> `'myfile/addExt.js'`
174 ✓ `'myfile/addExt.txt'` ---> `'myfile/addExt.txt.js'`
175 ✓ `'myfile/addExt.js'` ---> `'myfile/addExt.js'`
176 ✓ `'myfile/addExt.min.'` ---> `'myfile/addExt.min..js'`
177
178
179It adds nothing if no `ext` param is passed.
180
181 `upath.addExt(filename)` --returns-->
182
183 ✓ `'myfile/addExt'` ---> `'myfile/addExt'`
184 ✓ `'myfile/addExt.txt'` ---> `'myfile/addExt.txt'`
185 ✓ `'myfile/addExt.js'` ---> `'myfile/addExt.js'`
186 ✓ `'myfile/addExt.min.'` ---> `'myfile/addExt.min.'`
187
188
189#### `upath.trimExt(filename, [ignoreExts], [maxSize=7])`
190
191Trims a filename's extension.
192
193 * Extensions are considered to be up to `maxSize` chars long, counting the dot (defaults to 7).
194
195 * An `Array` of `ignoreExts` (eg `['.min']`) prevents these from being considered as extension, thus are not trimmed.
196
197##### Examples / specs
198
199 `upath.trimExt(filename)` --returns-->
200
201 ✓ `'my/trimedExt.txt'` ---> `'my/trimedExt'`
202 ✓ `'my/trimedExt'` ---> `'my/trimedExt'`
203 ✓ `'my/trimedExt.min'` ---> `'my/trimedExt'`
204 ✓ `'my/trimedExt.min.js'` ---> `'my/trimedExt.min'`
205 ✓ `'../my/trimedExt.longExt'` ---> `'../my/trimedExt.longExt'`
206
207
208It is ignoring `.min` & `.dev` as extensions, and considers exts with up to 8 chars.
209
210 `upath.trimExt(filename, ['min', '.dev'], 8)` --returns-->
211
212 ✓ `'my/trimedExt.txt'` ---> `'my/trimedExt'`
213 ✓ `'my/trimedExt.min'` ---> `'my/trimedExt.min'`
214 ✓ `'my/trimedExt.dev'` ---> `'my/trimedExt.dev'`
215 ✓ `'../my/trimedExt.longExt'` ---> `'../my/trimedExt'`
216 ✓ `'../my/trimedExt.longRExt'` ---> `'../my/trimedExt.longRExt'`
217
218
219#### `upath.removeExt(filename, ext)`
220
221Removes the specific `ext` extension from filename, if it has it. Otherwise it leaves it as is.
222As in all upath functions, it be `.ext` or `ext`.
223
224##### Examples / specs
225
226 `upath.removeExt(filename, '.js')` --returns-->
227
228 ✓ `'removedExt.js'` ---> `'removedExt'`
229 ✓ `'removedExt.txt.js'` ---> `'removedExt.txt'`
230 ✓ `'notRemoved.txt'` ---> `'notRemoved.txt'`
231
232It does not care about the length of exts.
233
234 `upath.removeExt(filename, '.longExt')` --returns-->
235
236 ✓ `'removedExt.longExt'` ---> `'removedExt'`
237 ✓ `'removedExt.txt.longExt'` ---> `'removedExt.txt'`
238 ✓ `'notRemoved.txt'` ---> `'notRemoved.txt'`
239
240
241#### `upath.changeExt(filename, [ext], [ignoreExts], [maxSize=7])`
242
243Changes a filename's extension to `ext`. If it has no (valid) extension, it adds it.
244
245 * Valid extensions are considered to be up to `maxSize` chars long, counting the dot (defaults to 7).
246
247 * An `Array` of `ignoreExts` (eg `['.min']`) prevents these from being considered as extension, thus are not changed - the new extension is added instead.
248
249##### Examples / specs
250
251 `upath.changeExt(filename, '.js')` --returns-->
252
253 ✓ `'my/module.min'` ---> `'my/module.js'`
254 ✓ `'my/module.coffee'` ---> `'my/module.js'`
255 ✓ `'my/module'` ---> `'my/module.js'`
256 ✓ `'file/withDot.'` ---> `'file/withDot.js'`
257 ✓ `'file/change.longExt'` ---> `'file/change.longExt.js'`
258
259
260If no `ext` param is given, it trims the current extension (if any).
261
262 `upath.changeExt(filename)` --returns-->
263
264 ✓ `'my/module.min'` ---> `'my/module'`
265 ✓ `'my/module.coffee'` ---> `'my/module'`
266 ✓ `'my/module'` ---> `'my/module'`
267 ✓ `'file/withDot.'` ---> `'file/withDot'`
268 ✓ `'file/change.longExt'` ---> `'file/change.longExt'`
269
270
271It is ignoring `.min` & `.dev` as extensions, and considers exts with up to 8 chars.
272
273 `upath.changeExt(filename, 'js', ['min', '.dev'], 8)` --returns-->
274
275 ✓ `'my/module.coffee'` ---> `'my/module.js'`
276 ✓ `'file/notValidExt.min'` ---> `'file/notValidExt.min.js'`
277 ✓ `'file/notValidExt.dev'` ---> `'file/notValidExt.dev.js'`
278 ✓ `'file/change.longExt'` ---> `'file/change.js'`
279 ✓ `'file/change.longRExt'` ---> `'file/change.longRExt.js'`
280
281
282#### `upath.defaultExt(filename, [ext], [ignoreExts], [maxSize=7])`
283
284Adds `.ext` to `filename`, only if it doesn't already have _any_ *old* extension.
285
286 * (Old) extensions are considered to be up to `maxSize` chars long, counting the dot (defaults to 7).
287
288 * An `Array` of `ignoreExts` (eg `['.min']`) will force adding default `.ext` even if one of these is present.
289
290##### Examples / specs
291
292 `upath.defaultExt(filename, 'js')` --returns-->
293
294 ✓ `'fileWith/defaultExt'` ---> `'fileWith/defaultExt.js'`
295 ✓ `'fileWith/defaultExt.js'` ---> `'fileWith/defaultExt.js'`
296 ✓ `'fileWith/defaultExt.min'` ---> `'fileWith/defaultExt.min'`
297 ✓ `'fileWith/defaultExt.longExt'` ---> `'fileWith/defaultExt.longExt.js'`
298
299
300If no `ext` param is passed, it leaves filename intact.
301
302 `upath.defaultExt(filename)` --returns-->
303
304 ✓ `'fileWith/defaultExt'` ---> `'fileWith/defaultExt'`
305 ✓ `'fileWith/defaultExt.js'` ---> `'fileWith/defaultExt.js'`
306 ✓ `'fileWith/defaultExt.min'` ---> `'fileWith/defaultExt.min'`
307 ✓ `'fileWith/defaultExt.longExt'` ---> `'fileWith/defaultExt.longExt'`
308
309
310It is ignoring `.min` & `.dev` as extensions, and considers exts with up to 8 chars.
311
312 `upath.defaultExt(filename, 'js', ['min', '.dev'], 8)` --returns-->
313
314 ✓ `'fileWith/defaultExt'` ---> `'fileWith/defaultExt.js'`
315 ✓ `'fileWith/defaultExt.min'` ---> `'fileWith/defaultExt.min.js'`
316 ✓ `'fileWith/defaultExt.dev'` ---> `'fileWith/defaultExt.dev.js'`
317 ✓ `'fileWith/defaultExt.longExt'` ---> `'fileWith/defaultExt.longExt'`
318 ✓ `'fileWith/defaultExt.longRext'` ---> `'fileWith/defaultExt.longRext.js'`
319
320
321Copyright(c) 2014-2019 Angelos Pikoulas (agelos.pikoulas@gmail.com)
322
323Permission is hereby granted, free of charge, to any person
324obtaining a copy of this software and associated documentation
325files (the "Software"), to deal in the Software without
326restriction, including without limitation the rights to use,
327copy, modify, merge, publish, distribute, sublicense, and/or sell
328copies of the Software, and to permit persons to whom the
329Software is furnished to do so, subject to the following
330conditions:
331
332The above copyright notice and this permission notice shall be
333included in all copies or substantial portions of the Software.
334
335THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
336EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
337OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
338NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
339HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
340WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
341FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
342OTHER DEALINGS IN THE SOFTWARE.
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