michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, you can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: var EXPORTED_SYMBOLS = ['inArray', 'getSet', 'indexOf',
michael@0:                         'remove', 'rindexOf', 'compare'];
michael@0: 
michael@0: 
michael@0: function remove(array, from, to) {
michael@0:   var rest = array.slice((to || from) + 1 || array.length);
michael@0:   array.length = from < 0 ? array.length + from : from;
michael@0: 
michael@0:   return array.push.apply(array, rest);
michael@0: }
michael@0: 
michael@0: function inArray(array, value) {
michael@0:   for (var i in array) {
michael@0:     if (value == array[i]) {
michael@0:       return true;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return false;
michael@0: }
michael@0: 
michael@0: function getSet(array) {
michael@0:   var narray = [];
michael@0: 
michael@0:   for (var i in array) {
michael@0:     if (!inArray(narray, array[i])) {
michael@0:       narray.push(array[i]);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return narray;
michael@0: }
michael@0: 
michael@0: function indexOf(array, v, offset) {
michael@0:   for (var i in array) {
michael@0:     if (offset == undefined || i >= offset) {
michael@0:       if (!isNaN(i) && array[i] == v) {
michael@0:         return new Number(i);
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return -1;
michael@0: }
michael@0: 
michael@0: function rindexOf (array, v) {
michael@0:   var l = array.length;
michael@0: 
michael@0:   for (var i in array) {
michael@0:     if (!isNaN(i)) {
michael@0:       var i = new Number(i);
michael@0:     }
michael@0: 
michael@0:     if (!isNaN(i) && array[l - i] == v) {
michael@0:       return l - i;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return -1;
michael@0: }
michael@0: 
michael@0: function compare (array, carray) {
michael@0:   if (array.length != carray.length) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   for (var i in array) {
michael@0:     if (array[i] != carray[i]) {
michael@0:       return false;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return true;
michael@0: }