README.md (4058B)
1 # brace-expansion 2 3 [Brace expansion](https://www.gnu.org/software/bash/manual/html_node/Brace-Expansion.html), 4 as known from sh/bash, in JavaScript. 5 6 [![build status](https://secure.travis-ci.org/juliangruber/brace-expansion.svg)](http://travis-ci.org/juliangruber/brace-expansion) 7 [![downloads](https://img.shields.io/npm/dm/brace-expansion.svg)](https://www.npmjs.org/package/brace-expansion) 8 [![Greenkeeper badge](https://badges.greenkeeper.io/juliangruber/brace-expansion.svg)](https://greenkeeper.io/) 9 10 [![testling badge](https://ci.testling.com/juliangruber/brace-expansion.png)](https://ci.testling.com/juliangruber/brace-expansion) 11 12 ## Example 13 14 ```js 15 var expand = require('brace-expansion'); 16 17 expand('file-{a,b,c}.jpg') 18 // => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg'] 19 20 expand('-v{,,}') 21 // => ['-v', '-v', '-v'] 22 23 expand('file{0..2}.jpg') 24 // => ['file0.jpg', 'file1.jpg', 'file2.jpg'] 25 26 expand('file-{a..c}.jpg') 27 // => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg'] 28 29 expand('file{2..0}.jpg') 30 // => ['file2.jpg', 'file1.jpg', 'file0.jpg'] 31 32 expand('file{0..4..2}.jpg') 33 // => ['file0.jpg', 'file2.jpg', 'file4.jpg'] 34 35 expand('file-{a..e..2}.jpg') 36 // => ['file-a.jpg', 'file-c.jpg', 'file-e.jpg'] 37 38 expand('file{00..10..5}.jpg') 39 // => ['file00.jpg', 'file05.jpg', 'file10.jpg'] 40 41 expand('{{A..C},{a..c}}') 42 // => ['A', 'B', 'C', 'a', 'b', 'c'] 43 44 expand('ppp{,config,oe{,conf}}') 45 // => ['ppp', 'pppconfig', 'pppoe', 'pppoeconf'] 46 ``` 47 48 ## API 49 50 ```js 51 var expand = require('brace-expansion'); 52 ``` 53 54 ### var expanded = expand(str) 55 56 Return an array of all possible and valid expansions of `str`. If none are 57 found, `[str]` is returned. 58 59 Valid expansions are: 60 61 ```js 62 /^(.*,)+(.+)?$/ 63 // {a,b,...} 64 ``` 65 66 A comma separated list of options, like `{a,b}` or `{a,{b,c}}` or `{,a,}`. 67 68 ```js 69 /^-?\d+\.\.-?\d+(\.\.-?\d+)?$/ 70 // {x..y[..incr]} 71 ``` 72 73 A numeric sequence from `x` to `y` inclusive, with optional increment. 74 If `x` or `y` start with a leading `0`, all the numbers will be padded 75 to have equal length. Negative numbers and backwards iteration work too. 76 77 ```js 78 /^-?\d+\.\.-?\d+(\.\.-?\d+)?$/ 79 // {x..y[..incr]} 80 ``` 81 82 An alphabetic sequence from `x` to `y` inclusive, with optional increment. 83 `x` and `y` must be exactly one character, and if given, `incr` must be a 84 number. 85 86 For compatibility reasons, the string `${` is not eligible for brace expansion. 87 88 ## Installation 89 90 With [npm](https://npmjs.org) do: 91 92 ```bash 93 npm install brace-expansion 94 ``` 95 96 ## Contributors 97 98 - [Julian Gruber](https://github.com/juliangruber) 99 - [Isaac Z. Schlueter](https://github.com/isaacs) 100 101 ## Sponsors 102 103 This module is proudly supported by my [Sponsors](https://github.com/juliangruber/sponsors)! 104 105 Do you want to support modules like this to improve their quality, stability and weigh in on new features? Then please consider donating to my [Patreon](https://www.patreon.com/juliangruber). Not sure how much of my modules you're using? Try [feross/thanks](https://github.com/feross/thanks)! 106 107 ## License 108 109 (MIT) 110 111 Copyright (c) 2013 Julian Gruber <julian@juliangruber.com> 112 113 Permission is hereby granted, free of charge, to any person obtaining a copy of 114 this software and associated documentation files (the "Software"), to deal in 115 the Software without restriction, including without limitation the rights to 116 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 117 of the Software, and to permit persons to whom the Software is furnished to do 118 so, subject to the following conditions: 119 120 The above copyright notice and this permission notice shall be included in all 121 copies or substantial portions of the Software. 122 123 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 124 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 125 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 126 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 127 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 128 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 129 SOFTWARE.