1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 | 1 1 283 39 244 6 238 237 3 234 5 229 1 228 228 228 1 228 130 98 98 1 130 130 116 64 64 64 64 14 14 14 18 18 18 18 18 130 1 6 6 10 6 1 79 74 74 74 74 1 156 156 140 140 136 4 4 1 40 40 42 42 37 5 2 3 1 6 1 1 1 1 6 1 1 643 1 634 1 23 1 1 1 1 1 2 2 1 1 1 1 1 | 'use strict'; /*! * Module dependencies. */ var RegExpClone = require('regexp-clone') /** * Clones objects * * @param {Object} obj the object to clone * @param {Object} options * @return {Object} the cloned object * @api private */ var clone = exports.clone = function clone (obj, options) { if (obj === undefined || obj === null) return obj; if (Array.isArray(obj)) return exports.cloneArray(obj, options); if (obj.constructor) { if (/ObjectI[dD]$/.test(obj.constructor.name)) { return 'function' == typeof obj.clone ? obj.clone() : new obj.constructor(obj.id); } if ('ReadPreference' === obj._type && obj.isValid && obj.toObject) { return 'function' == typeof obj.clone ? obj.clone() : new obj.constructor(obj.mode, clone(obj.tags, options)); } if ('Binary' == obj._bsontype && obj.buffer && obj.value) { return 'function' == typeof obj.clone ? obj.clone() : new obj.constructor(obj.value(true), obj.sub_type); } Iif ('Date' === obj.constructor.name || 'Function' === obj.constructor.name) return new obj.constructor(+obj); Iif ('RegExp' === obj.constructor.name) return RegExpClone(obj); if ('Buffer' === obj.constructor.name) return exports.cloneBuffer(obj); } if (isObject(obj)) return exports.cloneObject(obj, options); Eif (obj.valueOf) return obj.valueOf(); }; /*! * ignore */ var cloneObject = exports.cloneObject = function cloneObject (obj, options) { var retainKeyOrder = options && options.retainKeyOrder , minimize = options && options.minimize , ret = {} , hasKeys , keys , val , k , i if (retainKeyOrder) { for (k in obj) { val = clone(obj[k], options); Eif (!minimize || ('undefined' !== typeof val)) { hasKeys || (hasKeys = true); ret[k] = val; } } } else { // faster keys = Object.keys(obj); i = keys.length; while (i--) { k = keys[i]; val = clone(obj[k], options); Eif (!minimize || ('undefined' !== typeof val)) { if (!hasKeys) hasKeys = true; ret[k] = val; } } } return minimize ? hasKeys && ret : ret; }; var cloneArray = exports.cloneArray = function cloneArray (arr, options) { var ret = []; for (var i = 0, l = arr.length; i < l; i++) ret.push(clone(arr[i], options)); return ret; }; /** * process.nextTick helper. * * Wraps the given `callback` in a try/catch. If an error is * caught it will be thrown on nextTick. * * node-mongodb-native had a habit of state corruption when * an error was immediately thrown from within a collection * method (find, update, etc) callback. * * @param {Function} [callback] * @api private */ var tick = exports.tick = function tick (callback) { if ('function' !== typeof callback) return; return function () { // callbacks should always be fired on the next // turn of the event loop. A side benefit is // errors thrown from executing the callback // will not cause drivers state to be corrupted // which has historically been a problem. var args = arguments; soon(function(){ callback.apply(this, args); }); } } /** * Merges `from` into `to` without overwriting existing properties. * * @param {Object} to * @param {Object} from * @api private */ var merge = exports.merge = function merge (to, from) { var keys = Object.keys(from) , i = keys.length , key while (i--) { key = keys[i]; if ('undefined' === typeof to[key]) { to[key] = from[key]; } else { Iif (exports.isObject(from[key])) { merge(to[key], from[key]); } else { to[key] = from[key]; } } } } /** * Same as merge but clones the assigned values. * * @param {Object} to * @param {Object} from * @api private */ var mergeClone = exports.mergeClone = function mergeClone (to, from) { var keys = Object.keys(from) , i = keys.length , key while (i--) { key = keys[i]; if ('undefined' === typeof to[key]) { // make sure to retain key order here because of a bug handling the $each // operator in mongodb 2.4.4 to[key] = clone(from[key], { retainKeyOrder : 1}); } else { if (exports.isObject(from[key])) { mergeClone(to[key], from[key]); } else { // make sure to retain key order here because of a bug handling the // $each operator in mongodb 2.4.4 to[key] = clone(from[key], { retainKeyOrder : 1}); } } } } /** * Read pref helper (mongo 2.2 drivers support this) * * Allows using aliases instead of full preference names: * * p primary * pp primaryPreferred * s secondary * sp secondaryPreferred * n nearest * * @param {String} pref */ exports.readPref = function readPref (pref) { switch (pref) { case 'p': pref = 'primary'; break; case 'pp': pref = 'primaryPreferred'; break; case 's': pref = 'secondary'; break; case 'sp': pref = 'secondaryPreferred'; break; case 'n': pref = 'nearest'; break; } return pref; } /** * Object.prototype.toString.call helper */ var _toString = Object.prototype.toString; var toString = exports.toString = function (arg) { return _toString.call(arg); } /** * Determines if `arg` is an object. * * @param {Object|Array|String|Function|RegExp|any} arg * @return {Boolean} */ var isObject = exports.isObject = function (arg) { return '[object Object]' == exports.toString(arg); } /** * Determines if `arg` is an array. * * @param {Object} * @return {Boolean} * @see nodejs utils */ var isArray = exports.isArray = function (arg) { return Array.isArray(arg) || 'object' == typeof arg && '[object Array]' == exports.toString(arg); } /** * Object.keys helper */ exports.keys = Object.keys || function (obj) { var keys = []; for (var k in obj) if (obj.hasOwnProperty(k)) { keys.push(k); } return keys; } /** * Basic Object.create polyfill. * Only one argument is supported. * * Based on https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Object/create */ exports.create = 'function' == typeof Object.create ? Object.create : create; function create (proto) { if (arguments.length > 1) { throw new Error("Adding properties is not supported") } function F () {} F.prototype = proto; return new F; } /** * inheritance */ exports.inherits = function (ctor, superCtor) { ctor.prototype = exports.create(superCtor.prototype); ctor.prototype.constructor = ctor; } /** * nextTick helper * compat with node 0.10 which behaves differently than previous versions */ var soon = exports.soon = 'function' == typeof setImmediate ? setImmediate : process.nextTick; /** * Clones the contents of a buffer. * * @param {Buffer} buff * @return {Buffer} */ exports.cloneBuffer = function (buff) { var dupe = new Buffer(buff.length); buff.copy(dupe, 0, 0, buff.length); return dupe; }; |