diff options
Diffstat (limited to 'node_modules/randomatic/index.js')
-rw-r--r-- | node_modules/randomatic/index.js | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/node_modules/randomatic/index.js b/node_modules/randomatic/index.js new file mode 100644 index 000000000..85dbe21ca --- /dev/null +++ b/node_modules/randomatic/index.js @@ -0,0 +1,83 @@ +/*! + * randomatic <https://github.com/jonschlinkert/randomatic> + * + * This was originally inspired by <http://stackoverflow.com/a/10727155/1267639> + * Copyright (c) 2014-2015, Jon Schlinkert. + * Licensed under the MIT License (MIT) + */ + +'use strict'; + +var isNumber = require('is-number'); +var typeOf = require('kind-of'); + +/** + * Expose `randomatic` + */ + +module.exports = randomatic; + +/** + * Available mask characters + */ + +var type = { + lower: 'abcdefghijklmnopqrstuvwxyz', + upper: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', + number: '0123456789', + special: '~!@#$%^&()_+-={}[];\',.' +}; + +type.all = type.lower + type.upper + type.number; + +/** + * Generate random character sequences of a specified `length`, + * based on the given `pattern`. + * + * @param {String} `pattern` The pattern to use for generating the random string. + * @param {String} `length` The length of the string to generate. + * @param {String} `options` + * @return {String} + * @api public + */ + +function randomatic(pattern, length, options) { + if (typeof pattern === 'undefined') { + throw new Error('randomatic expects a string or number.'); + } + + var custom = false; + if (arguments.length === 1) { + if (typeof pattern === 'string') { + length = pattern.length; + + } else if (isNumber(pattern)) { + options = {}; length = pattern; pattern = '*'; + } + } + + if (typeOf(length) === 'object' && length.hasOwnProperty('chars')) { + options = length; + pattern = options.chars; + length = pattern.length; + custom = true; + } + + var opts = options || {}; + var mask = ''; + var res = ''; + + // Characters to be used + if (pattern.indexOf('?') !== -1) mask += opts.chars; + if (pattern.indexOf('a') !== -1) mask += type.lower; + if (pattern.indexOf('A') !== -1) mask += type.upper; + if (pattern.indexOf('0') !== -1) mask += type.number; + if (pattern.indexOf('!') !== -1) mask += type.special; + if (pattern.indexOf('*') !== -1) mask += type.all; + if (custom) mask += pattern; + + while (length--) { + res += mask.charAt(parseInt(Math.random() * mask.length, 10)); + } + return res; +}; |