diff options
Diffstat (limited to 'addons/web/static/lib/underscore')
| -rw-r--r-- | addons/web/static/lib/underscore/underscore-min.js | 37 | ||||
| -rw-r--r-- | addons/web/static/lib/underscore/underscore.js | 1003 | ||||
| -rw-r--r-- | addons/web/static/lib/underscore/underscore.string.js | 574 | ||||
| -rw-r--r-- | addons/web/static/lib/underscore/underscore.string.min.js | 15 |
4 files changed, 1034 insertions, 595 deletions
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\ No newline at end of file diff --git a/addons/web/static/lib/underscore/underscore.js b/addons/web/static/lib/underscore/underscore.js index 208d4cd890c..ca61fdc3a4b 100644 --- a/addons/web/static/lib/underscore/underscore.js +++ b/addons/web/static/lib/underscore/underscore.js @@ -1,17 +1,14 @@ -// Underscore.js 1.3.1 -// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc. -// Underscore is freely distributable under the MIT license. -// Portions of Underscore are inspired or borrowed from Prototype, -// Oliver Steele's Functional, and John Resig's Micro-Templating. -// For all details and documentation: -// http://documentcloud.github.com/underscore +// Underscore.js 1.6.0 +// http://underscorejs.org +// (c) 2009-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors +// Underscore may be freely distributed under the MIT license. (function() { // Baseline setup // -------------- - // Establish the root object, `window` in the browser, or `global` on the server. + // Establish the root object, `window` in the browser, or `exports` on the server. var root = this; // Save the previous value of the `_` variable. @@ -24,10 +21,12 @@ var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype; // Create quick reference variables for speed access to core prototypes. - var slice = ArrayProto.slice, - unshift = ArrayProto.unshift, - toString = ObjProto.toString, - hasOwnProperty = ObjProto.hasOwnProperty; + var + push = ArrayProto.push, + slice = ArrayProto.slice, + concat = ArrayProto.concat, + toString = ObjProto.toString, + hasOwnProperty = ObjProto.hasOwnProperty; // All **ECMAScript 5** native function implementations that we hope to use // are declared here. @@ -46,7 +45,11 @@ nativeBind = FuncProto.bind; // Create a safe reference to the Underscore object for use below. - var _ = function(obj) { return new wrapper(obj); }; + var _ = function(obj) { + if (obj instanceof _) return obj; + if (!(this instanceof _)) return new _(obj); + this._wrapped = obj; + }; // Export the Underscore object for **Node.js**, with // backwards-compatibility for the old `require()` API. If we're in @@ -58,11 +61,11 @@ } exports._ = _; } else { - root['_'] = _; + root._ = _; } // Current version. - _.VERSION = '1.3.1'; + _.VERSION = '1.6.0'; // Collection Functions // -------------------- @@ -71,20 +74,20 @@ // Handles objects with the built-in `forEach`, arrays, and raw objects. // Delegates to **ECMAScript 5**'s native `forEach` if available. var each = _.each = _.forEach = function(obj, iterator, context) { - if (obj == null) return; + if (obj == null) return obj; if (nativeForEach && obj.forEach === nativeForEach) { obj.forEach(iterator, context); } else if (obj.length === +obj.length) { - for (var i = 0, l = obj.length; i < l; i++) { - if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return; + for (var i = 0, length = obj.length; i < length; i++) { + if (iterator.call(context, obj[i], i, obj) === breaker) return; } } else { - for (var key in obj) { - if (_.has(obj, key)) { - if (iterator.call(context, obj[key], key, obj) === breaker) return; - } + var keys = _.keys(obj); + for (var i = 0, length = keys.length; i < length; i++) { + if (iterator.call(context, obj[keys[i]], keys[i], obj) === breaker) return; } } + return obj; }; // Return the results of applying the iterator to each element. @@ -94,12 +97,13 @@ if (obj == null) return results; if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context); each(obj, function(value, index, list) { - results[results.length] = iterator.call(context, value, index, list); + results.push(iterator.call(context, value, index, list)); }); - if (obj.length === +obj.length) results.length = obj.length; return results; }; + var reduceError = 'Reduce of empty array with no initial value'; + // **Reduce** builds up a single result from a list of values, aka `inject`, // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available. _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) { @@ -117,7 +121,7 @@ memo = iterator.call(context, memo, value, index, list); } }); - if (!initial) throw new TypeError('Reduce of empty array with no initial value'); + if (!initial) throw new TypeError(reduceError); return memo; }; @@ -130,16 +134,29 @@ if (context) iterator = _.bind(iterator, context); return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator); } - var reversed = _.toArray(obj).reverse(); - if (context && !initial) iterator = _.bind(iterator, context); - return initial ? _.reduce(reversed, iterator, memo, context) : _.reduce(reversed, iterator); + var length = obj.length; + if (length !== +length) { + var keys = _.keys(obj); + length = keys.length; + } + each(obj, function(value, index, list) { + index = keys ? keys[--length] : --length; + if (!initial) { + memo = obj[index]; + initial = true; + } else { + memo = iterator.call(context, memo, obj[index], index, list); + } + }); + if (!initial) throw new TypeError(reduceError); + return memo; }; // Return the first value which passes a truth test. Aliased as `detect`. - _.find = _.detect = function(obj, iterator, context) { + _.find = _.detect = function(obj, predicate, context) { var result; any(obj, function(value, index, list) { - if (iterator.call(context, value, index, list)) { + if (predicate.call(context, value, index, list)) { result = value; return true; } @@ -150,179 +167,246 @@ // Return all the elements that pass a truth test. // Delegates to **ECMAScript 5**'s native `filter` if available. // Aliased as `select`. - _.filter = _.select = function(obj, iterator, context) { + _.filter = _.select = function(obj, predicate, context) { var results = []; if (obj == null) return results; - if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context); + if (nativeFilter && obj.filter === nativeFilter) return obj.filter(predicate, context); each(obj, function(value, index, list) { - if (iterator.call(context, value, index, list)) results[results.length] = value; + if (predicate.call(context, value, index, list)) results.push(value); }); return results; }; // Return all the elements for which a truth test fails. - _.reject = function(obj, iterator, context) { - var results = []; - if (obj == null) return results; - each(obj, function(value, index, list) { - if (!iterator.call(context, value, index, list)) results[results.length] = value; - }); - return results; + _.reject = function(obj, predicate, context) { + return _.filter(obj, function(value, index, list) { + return !predicate.call(context, value, index, list); + }, context); }; // Determine whether all of the elements match a truth test. // Delegates to **ECMAScript 5**'s native `every` if available. // Aliased as `all`. - _.every = _.all = function(obj, iterator, context) { + _.every = _.all = function(obj, predicate, context) { + predicate || (predicate = _.identity); var result = true; if (obj == null) return result; - if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context); + if (nativeEvery && obj.every === nativeEvery) return obj.every(predicate, context); each(obj, function(value, index, list) { - if (!(result = result && iterator.call(context, value, index, list))) return breaker; + if (!(result = result && predicate.call(context, value, index, list))) return breaker; }); - return result; + return !!result; }; // Determine if at least one element in the object matches a truth test. // Delegates to **ECMAScript 5**'s native `some` if available. // Aliased as `any`. - var any = _.some = _.any = function(obj, iterator, context) { - iterator || (iterator = _.identity); + var any = _.some = _.any = function(obj, predicate, context) { + predicate || (predicate = _.identity); var result = false; if (obj == null) return result; - if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context); + if (nativeSome && obj.some === nativeSome) return obj.some(predicate, context); each(obj, function(value, index, list) { - if (result || (result = iterator.call(context, value, index, list))) return breaker; + if (result || (result = predicate.call(context, value, index, list))) return breaker; }); return !!result; }; - // Determine if a given value is included in the array or object using `===`. - // Aliased as `contains`. - _.include = _.contains = function(obj, target) { - var found = false; - if (obj == null) return found; + // Determine if the array or object contains a given value (using `===`). + // Aliased as `include`. + _.contains = _.include = function(obj, target) { + if (obj == null) return false; if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1; - found = any(obj, function(value) { + return any(obj, function(value) { return value === target; }); - return found; }; // Invoke a method (with arguments) on every item in a collection. _.invoke = function(obj, method) { var args = slice.call(arguments, 2); + var isFunc = _.isFunction(method); return _.map(obj, function(value) { - return (_.isFunction(method) ? method || value : value[method]).apply(value, args); + return (isFunc ? method : value[method]).apply(value, args); }); }; // Convenience version of a common use case of `map`: fetching a property. _.pluck = function(obj, key) { - return _.map(obj, function(value){ return value[key]; }); + return _.map(obj, _.property(key)); + }; + + // Convenience version of a common use case of `filter`: selecting only objects + // containing specific `key:value` pairs. + _.where = function(obj, attrs) { + return _.filter(obj, _.matches(attrs)); + }; + + // Convenience version of a common use case of `find`: getting the first object + // containing specific `key:value` pairs. + _.findWhere = function(obj, attrs) { + return _.find(obj, _.matches(attrs)); }; // Return the maximum element or (element-based computation). + // Can't optimize arrays of integers longer than 65,535 elements. + // See [WebKit Bug 80797](https://bugs.webkit.org/show_bug.cgi?id=80797) _.max = function(obj, iterator, context) { - if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj); - if (!iterator && _.isEmpty(obj)) return -Infinity; - var result = {computed : -Infinity}; + if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) { + return Math.max.apply(Math, obj); + } + var result = -Infinity, lastComputed = -Infinity; each(obj, function(value, index, list) { var computed = iterator ? iterator.call(context, value, index, list) : value; - computed >= result.computed && (result = {value : value, computed : computed}); + if (computed > lastComputed) { + result = value; + lastComputed = computed; + } }); - return result.value; + return result; }; // Return the minimum element (or element-based computation). _.min = function(obj, iterator, context) { - if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj); - if (!iterator && _.isEmpty(obj)) return Infinity; - var result = {computed : Infinity}; + if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) { + return Math.min.apply(Math, obj); + } + var result = Infinity, lastComputed = Infinity; each(obj, function(value, index, list) { var computed = iterator ? iterator.call(context, value, index, list) : value; - computed < result.computed && (result = {value : value, computed : computed}); + if (computed < lastComputed) { + result = value; + lastComputed = computed; + } }); - return result.value; + return result; }; - // Shuffle an array. + // Shuffle an array, using the modern version of the + // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle). _.shuffle = function(obj) { - var shuffled = [], rand; - each(obj, function(value, index, list) { - if (index == 0) { - shuffled[0] = value; - } else { - rand = Math.floor(Math.random() * (index + 1)); - shuffled[index] = shuffled[rand]; - shuffled[rand] = value; - } + var rand; + var index = 0; + var shuffled = []; + each(obj, function(value) { + rand = _.random(index++); + shuffled[index - 1] = shuffled[rand]; + shuffled[rand] = value; }); return shuffled; }; + // Sample **n** random values from a collection. + // If **n** is not specified, returns a single random element. + // The internal `guard` argument allows it to work with `map`. + _.sample = function(obj, n, guard) { + if (n == null || guard) { + if (obj.length !== +obj.length) obj = _.values(obj); + return obj[_.random(obj.length - 1)]; + } + return _.shuffle(obj).slice(0, Math.max(0, n)); + }; + + // An internal function to generate lookup iterators. + var lookupIterator = function(value) { + if (value == null) return _.identity; + if (_.isFunction(value)) return value; + return _.property(value); + }; + // Sort the object's values by a criterion produced by an iterator. _.sortBy = function(obj, iterator, context) { + iterator = lookupIterator(iterator); return _.pluck(_.map(obj, function(value, index, list) { return { - value : value, - criteria : iterator.call(context, value, index, list) + value: value, + index: index, + criteria: iterator.call(context, value, index, list) }; }).sort(function(left, right) { - var a = left.criteria, b = right.criteria; - return a < b ? -1 : a > b ? 1 : 0; + var a = left.criteria; + var b = right.criteria; + if (a !== b) { + if (a > b || a === void 0) return 1; + if (a < b || b === void 0) return -1; + } + return left.index - right.index; }), 'value'); }; + // An internal function used for aggregate "group by" operations. + var group = function(behavior) { + return function(obj, iterator, context) { + var result = {}; + iterator = lookupIterator(iterator); + each(obj, function(value, index) { + var key = iterator.call(context, value, index, obj); + behavior(result, key, value); + }); + return result; + }; + }; + // Groups the object's values by a criterion. Pass either a string attribute // to group by, or a function that returns the criterion. - _.groupBy = function(obj, val) { - var result = {}; - var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; }; - each(obj, function(value, index) { - var key = iterator(value, index); - (result[key] || (result[key] = [])).push(value); - }); - return result; - }; + _.groupBy = group(function(result, key, value) { + _.has(result, key) ? result[key].push(value) : result[key] = [value]; + }); + + // Indexes the object's values by a criterion, similar to `groupBy`, but for + // when you know that your index values will be unique. + _.indexBy = group(function(result, key, value) { + result[key] = value; + }); + + // Counts instances of an object that group by a certain criterion. Pass + // either a string attribute to count by, or a function that returns the + // criterion. + _.countBy = group(function(result, key) { + _.has(result, key) ? result[key]++ : result[key] = 1; + }); - // Use a comparator function to figure out at what index an object should - // be inserted so as to maintain order. Uses binary search. - _.sortedIndex = function(array, obj, iterator) { - iterator || (iterator = _.identity); + // Use a comparator function to figure out the smallest index at which + // an object should be inserted so as to maintain order. Uses binary search. + _.sortedIndex = function(array, obj, iterator, context) { + iterator = lookupIterator(iterator); + var value = iterator.call(context, obj); var low = 0, high = array.length; while (low < high) { - var mid = (low + high) >> 1; - iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid; + var mid = (low + high) >>> 1; + iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid; } return low; }; - // Safely convert anything iterable into a real, live array. - _.toArray = function(iterable) { - if (!iterable) return []; - if (iterable.toArray) return iterable.toArray(); - if (_.isArray(iterable)) return slice.call(iterable); - if (_.isArguments(iterable)) return slice.call(iterable); - return _.values(iterable); + // Safely create a real, live array from anything iterable. + _.toArray = function(obj) { + if (!obj) return []; + if (_.isArray(obj)) return slice.call(obj); + if (obj.length === +obj.length) return _.map(obj, _.identity); + return _.values(obj); }; // Return the number of elements in an object. _.size = function(obj) { - return _.toArray(obj).length; + if (obj == null) return 0; + return (obj.length === +obj.length) ? obj.length : _.keys(obj).length; }; // Array Functions // --------------- // Get the first element of an array. Passing **n** will return the first N - // values in the array. Aliased as `head`. The **guard** check allows it to work - // with `_.map`. - _.first = _.head = function(array, n, guard) { - return (n != null) && !guard ? slice.call(array, 0, n) : array[0]; + // values in the array. Aliased as `head` and `take`. The **guard** check + // allows it to work with `_.map`. + _.first = _.head = _.take = function(array, n, guard) { + if (array == null) return void 0; + if ((n == null) || guard) return array[0]; + if (n < 0) return []; + return slice.call(array, 0, n); }; - // Returns everything but the last entry of the array. Especcialy useful on + // Returns everything but the last entry of the array. Especially useful on // the arguments object. Passing **n** will return all the values in // the array, excluding the last N. The **guard** check allows it to work with // `_.map`. @@ -333,33 +417,42 @@ // Get the last element of an array. Passing **n** will return the last N // values in the array. The **guard** check allows it to work with `_.map`. _.last = function(array, n, guard) { - if ((n != null) && !guard) { - return slice.call(array, Math.max(array.length - n, 0)); - } else { - return array[array.length - 1]; - } + if (array == null) return void 0; + if ((n == null) || guard) return array[array.length - 1]; + return slice.call(array, Math.max(array.length - n, 0)); }; - // Returns everything but the first entry of the array. Aliased as `tail`. - // Especially useful on the arguments object. Passing an **index** will return - // the rest of the values in the array from that index onward. The **guard** + // Returns everything but the first entry of the array. Aliased as `tail` and `drop`. + // Especially useful on the arguments object. Passing an **n** will return + // the rest N values in the array. The **guard** // check allows it to work with `_.map`. - _.rest = _.tail = function(array, index, guard) { - return slice.call(array, (index == null) || guard ? 1 : index); + _.rest = _.tail = _.drop = function(array, n, guard) { + return slice.call(array, (n == null) || guard ? 1 : n); }; // Trim out all falsy values from an array. _.compact = function(array) { - return _.filter(array, function(value){ return !!value; }); + return _.filter(array, _.identity); + }; + + // Internal implementation of a recursive `flatten` function. + var flatten = function(input, shallow, output) { + if (shallow && _.every(input, _.isArray)) { + return concat.apply(output, input); + } + each(input, function(value) { + if (_.isArray(value) || _.isArguments(value)) { + shallow ? push.apply(output, value) : flatten(value, shallow, output); + } else { + output.push(value); + } + }); + return output; }; - // Return a completely flattened version of an array. + // Flatten out an array, either recursively (by default), or just one level. _.flatten = function(array, shallow) { - return _.reduce(array, function(memo, value) { - if (_.isArray(value)) return memo.concat(shallow ? value : _.flatten(value)); - memo[memo.length] = value; - return memo; - }, []); + return flatten(array, shallow, []); }; // Return a version of the array that does not contain the specified value(s). @@ -367,20 +460,36 @@ return _.difference(array, slice.call(arguments, 1)); }; + // Split an array into two arrays: one whose elements all satisfy the given + // predicate, and one whose elements all do not satisfy the predicate. + _.partition = function(array, predicate, context) { + predicate = lookupIterator(predicate); + var pass = [], fail = []; + each(array, function(elem) { + (predicate.call(context, elem) ? pass : fail).push(elem); + }); + return [pass, fail]; + }; + // Produce a duplicate-free version of the array. If the array has already // been sorted, you have the option of using a faster algorithm. // Aliased as `unique`. - _.uniq = _.unique = function(array, isSorted, iterator) { - var initial = iterator ? _.map(array, iterator) : array; - var result = []; - _.reduce(initial, function(memo, el, i) { - if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) { - memo[memo.length] = el; - result[result.length] = array[i]; + _.uniq = _.unique = function(array, isSorted, iterator, context) { + if (_.isFunction(isSorted)) { + context = iterator; + iterator = isSorted; + isSorted = false; + } + var initial = iterator ? _.map(array, iterator, context) : array; + var results = []; + var seen = []; + each(initial, function(value, index) { + if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) { + seen.push(value); + results.push(array[index]); } - return memo; - }, []); - return result; + }); + return results; }; // Produce an array that contains the union: each distinct element from all of @@ -390,12 +499,12 @@ }; // Produce an array that contains every item shared between all the - // passed-in arrays. (Aliased as "intersect" for back-compat.) - _.intersection = _.intersect = function(array) { + // passed-in arrays. + _.intersection = function(array) { var rest = slice.call(arguments, 1); return _.filter(_.uniq(array), function(item) { return _.every(rest, function(other) { - return _.indexOf(other, item) >= 0; + return _.contains(other, item); }); }); }; @@ -403,20 +512,37 @@ // Take the difference between one array and a number of other arrays. // Only the elements present in just the first array will remain. _.difference = function(array) { - var rest = _.flatten(slice.call(arguments, 1)); - return _.filter(array, function(value){ return !_.include(rest, value); }); + var rest = concat.apply(ArrayProto, slice.call(arguments, 1)); + return _.filter(array, function(value){ return !_.contains(rest, value); }); }; // Zip together multiple lists into a single array -- elements that share // an index go together. _.zip = function() { - var args = slice.call(arguments); - var length = _.max(_.pluck(args, 'length')); + var length = _.max(_.pluck(arguments, 'length').concat(0)); var results = new Array(length); - for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i); + for (var i = 0; i < length; i++) { + results[i] = _.pluck(arguments, '' + i); + } return results; }; + // Converts lists into objects. Pass either a single array of `[key, value]` + // pairs, or two parallel arrays of the same length -- one of keys, and one of + // the corresponding values. + _.object = function(list, values) { + if (list == null) return {}; + var result = {}; + for (var i = 0, length = list.length; i < length; i++) { + if (values) { + result[list[i]] = values[i]; + } else { + result[list[i][0]] = list[i][1]; + } + } + return result; + }; + // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**), // we need this function. Return the position of the first occurrence of an // item in an array, or -1 if the item is not included in the array. @@ -425,22 +551,29 @@ // for **isSorted** to use binary search. _.indexOf = function(array, item, isSorted) { if (array == null) return -1; - var i, l; + var i = 0, length = array.length; if (isSorted) { - i = _.sortedIndex(array, item); - return array[i] === item ? i : -1; + if (typeof isSorted == 'number') { + i = (isSorted < 0 ? Math.max(0, length + isSorted) : isSorted); + } else { + i = _.sortedIndex(array, item); + return array[i] === item ? i : -1; + } } - if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item); - for (i = 0, l = array.length; i < l; i++) if (i in array && array[i] === item) return i; + if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted); + for (; i < length; i++) if (array[i] === item) return i; return -1; }; // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available. - _.lastIndexOf = function(array, item) { + _.lastIndexOf = function(array, item, from) { if (array == null) return -1; - if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item); - var i = array.length; - while (i--) if (i in array && array[i] === item) return i; + var hasIndex = from != null; + if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) { + return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item); + } + var i = (hasIndex ? from : array.length); + while (i--) if (array[i] === item) return i; return -1; }; @@ -454,11 +587,11 @@ } step = arguments[2] || 1; - var len = Math.max(Math.ceil((stop - start) / step), 0); + var length = Math.max(Math.ceil((stop - start) / step), 0); var idx = 0; - var range = new Array(len); + var range = new Array(length); - while(idx < len) { + while(idx < length) { range[idx++] = start; start += step; } @@ -473,29 +606,46 @@ var ctor = function(){}; // Create a function bound to a given object (assigning `this`, and arguments, - // optionally). Binding with arguments is also known as `curry`. - // Delegates to **ECMAScript 5**'s native `Function.bind` if available. - // We check for `func.bind` first, to fail fast when `func` is undefined. - _.bind = function bind(func, context) { - var bound, args; - if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1)); + // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if + // available. + _.bind = function(func, context) { + var args, bound; + if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1)); if (!_.isFunction(func)) throw new TypeError; args = slice.call(arguments, 2); return bound = function() { if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments))); ctor.prototype = func.prototype; var self = new ctor; + ctor.prototype = null; var result = func.apply(self, args.concat(slice.call(arguments))); if (Object(result) === result) return result; return self; }; }; - // Bind all of an object's methods to that object. Useful for ensuring that - // all callbacks defined on an object belong to it. + // Partially apply a function by creating a version that has had some of its + // arguments pre-filled, without changing its dynamic `this` context. _ acts + // as a placeholder, allowing any combination of arguments to be pre-filled. + _.partial = function(func) { + var boundArgs = slice.call(arguments, 1); + return function() { + var position = 0; + var args = boundArgs.slice(); + for (var i = 0, length = args.length; i < length; i++) { + if (args[i] === _) args[i] = arguments[position++]; + } + while (position < arguments.length) args.push(arguments[position++]); + return func.apply(this, args); + }; + }; + + // Bind a number of an object's methods to that object. Remaining arguments + // are the method names to be bound. Useful for ensuring that all callbacks + // defined on an object belong to it. _.bindAll = function(obj) { var funcs = slice.call(arguments, 1); - if (funcs.length == 0) funcs = _.functions(obj); + if (funcs.length === 0) throw new Error('bindAll must be passed function names'); each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); }); return obj; }; @@ -514,7 +664,7 @@ // it with the arguments supplied. _.delay = function(func, wait) { var args = slice.call(arguments, 2); - return setTimeout(function(){ return func.apply(func, args); }, wait); + return setTimeout(function(){ return func.apply(null, args); }, wait); }; // Defers a function, scheduling it to run after the current call stack has @@ -524,41 +674,74 @@ }; // Returns a function, that, when invoked, will only be triggered at most once - // during a given window of time. - _.throttle = function(func, wait) { - var context, args, timeout, throttling, more; - var whenDone = _.debounce(function(){ more = throttling = false; }, wait); + // during a given window of time. Normally, the throttled function will run + // as much as it can, without ever going more than once per `wait` duration; + // but if you'd like to disable the execution on the leading edge, pass + // `{leading: false}`. To disable execution on the trailing edge, ditto. + _.throttle = function(func, wait, options) { + var context, args, result; + var timeout = null; + var previous = 0; + options || (options = {}); + var later = function() { + previous = options.leading === false ? 0 : _.now(); + timeout = null; + result = func.apply(context, args); + context = args = null; + }; return function() { - context = this; args = arguments; - var later = function() { + var now = _.now(); + if (!previous && options.leading === false) previous = now; + var remaining = wait - (now - previous); + context = this; + args = arguments; + if (remaining <= 0) { + clearTimeout(timeout); timeout = null; - if (more) func.apply(context, args); - whenDone(); - }; - if (!timeout) timeout = setTimeout(later, wait); - if (throttling) { - more = true; - } else { - func.apply(context, args); + previous = now; + result = func.apply(context, args); + context = args = null; + } else if (!timeout && options.trailing !== false) { + timeout = setTimeout(later, remaining); } - whenDone(); - throttling = true; + return result; }; }; // Returns a function, that, as long as it continues to be invoked, will not // be triggered. The function will be called after it stops being called for - // N milliseconds. - _.debounce = function(func, wait) { - var timeout; - return function() { - var context = this, args = arguments; - var later = function() { + // N milliseconds. If `immediate` is passed, trigger the function on the + // leading edge, instead of the trailing. + _.debounce = function(func, wait, immediate) { + var timeout, args, context, timestamp, result; + + var later = function() { + var last = _.now() - timestamp; + if (last < wait) { + timeout = setTimeout(later, wait - last); + } else { timeout = null; - func.apply(context, args); - }; - clearTimeout(timeout); - timeout = setTimeout(later, wait); + if (!immediate) { + result = func.apply(context, args); + context = args = null; + } + } + }; + + return function() { + context = this; + args = arguments; + timestamp = _.now(); + var callNow = immediate && !timeout; + if (!timeout) { + timeout = setTimeout(later, wait); + } + if (callNow) { + result = func.apply(context, args); + context = args = null; + } + + return result; }; }; @@ -569,7 +752,9 @@ return function() { if (ran) return memo; ran = true; - return memo = func.apply(this, arguments); + memo = func.apply(this, arguments); + func = null; + return memo; }; }; @@ -577,10 +762,7 @@ // allowing you to adjust arguments, run code before and after, and // conditionally execute the original function. _.wrap = function(func, wrapper) { - return function() { - var args = [func].concat(slice.call(arguments, 0)); - return wrapper.apply(this, args); - }; + return _.partial(wrapper, func); }; // Returns a function that is the composition of a list of functions, each @@ -598,9 +780,10 @@ // Returns a function that will only be executed after being called N times. _.after = function(times, func) { - if (times <= 0) return func(); return function() { - if (--times < 1) { return func.apply(this, arguments); } + if (--times < 1) { + return func.apply(this, arguments); + } }; }; @@ -609,16 +792,44 @@ // Retrieve the names of an object's properties. // Delegates to **ECMAScript 5**'s native `Object.keys` - _.keys = nativeKeys || function(obj) { - if (obj !== Object(obj)) throw new TypeError('Invalid object'); + _.keys = function(obj) { + if (!_.isObject(obj)) return []; + if (nativeKeys) return nativeKeys(obj); var keys = []; - for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key; + for (var key in obj) if (_.has(obj, key)) keys.push(key); return keys; }; // Retrieve the values of an object's properties. _.values = function(obj) { - return _.map(obj, _.identity); + var keys = _.keys(obj); + var length = keys.length; + var values = new Array(length); + for (var i = 0; i < length; i++) { + values[i] = obj[keys[i]]; + } + return values; + }; + + // Convert an object into a list of `[key, value]` pairs. + _.pairs = function(obj) { + var keys = _.keys(obj); + var length = keys.length; + var pairs = new Array(length); + for (var i = 0; i < length; i++) { + pairs[i] = [keys[i], obj[keys[i]]]; + } + return pairs; + }; + + // Invert the keys and values of an object. The values must be serializable. + _.invert = function(obj) { + var result = {}; + var keys = _.keys(obj); + for (var i = 0, length = keys.length; i < length; i++) { + result[obj[keys[i]]] = keys[i]; + } + return result; }; // Return a sorted list of the function names available on the object. @@ -634,18 +845,42 @@ // Extend a given object with all the properties in passed-in object(s). _.extend = function(obj) { each(slice.call(arguments, 1), function(source) { - for (var prop in source) { - obj[prop] = source[prop]; + if (source) { + for (var prop in source) { + obj[prop] = source[prop]; + } } }); return obj; }; + // Return a copy of the object only containing the whitelisted properties. + _.pick = function(obj) { + var copy = {}; + var keys = concat.apply(ArrayProto, slice.call(arguments, 1)); + each(keys, function(key) { + if (key in obj) copy[key] = obj[key]; + }); + return copy; + }; + + // Return a copy of the object without the blacklisted properties. + _.omit = function(obj) { + var copy = {}; + var keys = concat.apply(ArrayProto, slice.call(arguments, 1)); + for (var key in obj) { + if (!_.contains(keys, key)) copy[key] = obj[key]; + } + return copy; + }; + // Fill in a given object with default properties. _.defaults = function(obj) { each(slice.call(arguments, 1), function(source) { - for (var prop in source) { - if (obj[prop] == null) obj[prop] = source[prop]; + if (source) { + for (var prop in source) { + if (obj[prop] === void 0) obj[prop] = source[prop]; + } } }); return obj; @@ -665,19 +900,16 @@ return obj; }; - // Internal recursive comparison function. - function eq(a, b, stack) { + // Internal recursive comparison function for `isEqual`. + var eq = function(a, b, aStack, bStack) { // Identical objects are equal. `0 === -0`, but they aren't identical. - // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal. + // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal). if (a === b) return a !== 0 || 1 / a == 1 / b; // A strict comparison is necessary because `null == undefined`. if (a == null || b == null) return a === b; // Unwrap any wrapped objects. - if (a._chain) a = a._wrapped; - if (b._chain) b = b._wrapped; - // Invoke a custom `isEqual` method if one is provided. - if (a.isEqual && _.isFunction(a.isEqual)) return a.isEqual(b); - if (b.isEqual && _.isFunction(b.isEqual)) return b.isEqual(a); + if (a instanceof _) a = a._wrapped; + if (b instanceof _) b = b._wrapped; // Compare `[[Class]]` names. var className = toString.call(a); if (className != toString.call(b)) return false; @@ -707,14 +939,23 @@ if (typeof a != 'object' || typeof b != 'object') return false; // Assume equality for cyclic structures. The algorithm for detecting cyclic // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`. - var length = stack.length; + var length = aStack.length; while (length--) { // Linear search. Performance is inversely proportional to the number of // unique nested structures. - if (stack[length] == a) return true; + if (aStack[length] == a) return bStack[length] == b; + } + // Objects with different constructors are not equivalent, but `Object`s + // from different frames are. + var aCtor = a.constructor, bCtor = b.constructor; + if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) && + _.isFunction(bCtor) && (bCtor instanceof bCtor)) + && ('constructor' in a && 'constructor' in b)) { + return false; } // Add the first object to the stack of traversed objects. - stack.push(a); + aStack.push(a); + bStack.push(b); var size = 0, result = true; // Recursively compare objects and arrays. if (className == '[object Array]') { @@ -724,20 +965,17 @@ if (result) { // Deep compare the contents, ignoring non-numeric properties. while (size--) { - // Ensure commutative equality for sparse arrays. - if (!(result = size in a == size in b && eq(a[size], b[size], stack))) break; + if (!(result = eq(a[size], b[size], aStack, bStack))) break; } } } else { - // Objects with different constructors are not equivalent. - if ('constructor' in a != 'constructor' in b || a.constructor != b.constructor) return false; // Deep compare objects. for (var key in a) { if (_.has(a, key)) { // Count the expected number of properties. size++; // Deep compare each member. - if (!(result = _.has(b, key) && eq(a[key], b[key], stack))) break; + if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break; } } // Ensure that both objects contain the same number of properties. @@ -749,18 +987,20 @@ } } // Remove the first object from the stack of traversed objects. - stack.pop(); + aStack.pop(); + bStack.pop(); return result; - } + }; // Perform a deep comparison to check if two objects are equal. _.isEqual = function(a, b) { - return eq(a, b, []); + return eq(a, b, [], []); }; // Is a given array, string, or object empty? // An "empty" object has no enumerable own-properties. _.isEmpty = function(obj) { + if (obj == null) return true; if (_.isArray(obj) || _.isString(obj)) return obj.length === 0; for (var key in obj) if (_.has(obj, key)) return false; return true; @@ -768,7 +1008,7 @@ // Is a given value a DOM element? _.isElement = function(obj) { - return !!(obj && obj.nodeType == 1); + return !!(obj && obj.nodeType === 1); }; // Is a given value an array? @@ -782,35 +1022,36 @@ return obj === Object(obj); }; - // Is a given variable an arguments object? - _.isArguments = function(obj) { - return toString.call(obj) == '[object Arguments]'; - }; + // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp. + each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) { + _['is' + name] = function(obj) { + return toString.call(obj) == '[object ' + name + ']'; + }; + }); + + // Define a fallback version of the method in browsers (ahem, IE), where + // there isn't any inspectable "Arguments" type. if (!_.isArguments(arguments)) { _.isArguments = function(obj) { return !!(obj && _.has(obj, 'callee')); }; } - // Is a given value a function? - _.isFunction = function(obj) { - return toString.call(obj) == '[object Function]'; - }; - - // Is a given value a string? - _.isString = function(obj) { - return toString.call(obj) == '[object String]'; - }; + // Optimize `isFunction` if appropriate. + if (typeof (/./) !== 'function') { + _.isFunction = function(obj) { + return typeof obj === 'function'; + }; + } - // Is a given value a number? - _.isNumber = function(obj) { - return toString.call(obj) == '[object Number]'; + // Is a given object a finite number? + _.isFinite = function(obj) { + return isFinite(obj) && !isNaN(parseFloat(obj)); }; - // Is the given value `NaN`? + // Is the given value `NaN`? (NaN is the only number which does not equal itself). _.isNaN = function(obj) { - // `NaN` is the only value for which `===` is not reflexive. - return obj !== obj; + return _.isNumber(obj) && obj != +obj; }; // Is a given value a boolean? @@ -818,16 +1059,6 @@ return obj === true || obj === false || toString.call(obj) == '[object Boolean]'; }; - // Is a given value a date? - _.isDate = function(obj) { - return toString.call(obj) == '[object Date]'; - }; - - // Is the given value a regular expression? - _.isRegExp = function(obj) { - return toString.call(obj) == '[object RegExp]'; - }; - // Is a given value equal to null? _.isNull = function(obj) { return obj === null; @@ -838,7 +1069,8 @@ return obj === void 0; }; - // Has own property? + // Shortcut function for checking if an object has a given property directly + // on itself (in other words, not on a prototype). _.has = function(obj, key) { return hasOwnProperty.call(obj, key); }; @@ -858,21 +1090,94 @@ return value; }; + _.constant = function(value) { + return function () { + return value; + }; + }; + + _.property = function(key) { + return function(obj) { + return obj[key]; + }; + }; + + // Returns a predicate for checking whether an object has a given set of `key:value` pairs. + _.matches = function(attrs) { + return function(obj) { + if (obj === attrs) return true; //avoid comparing an object to itself. + for (var key in attrs) { + if (attrs[key] !== obj[key]) + return false; + } + return true; + } + }; + // Run a function **n** times. - _.times = function (n, iterator, context) { - for (var i = 0; i < n; i++) iterator.call(context, i); + _.times = function(n, iterator, context) { + var accum = Array(Math.max(0, n)); + for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i); + return accum; + }; + + // Return a random integer between min and max (inclusive). + _.random = function(min, max) { + if (max == null) { + max = min; + min = 0; + } + return min + Math.floor(Math.random() * (max - min + 1)); + }; + + // A (possibly faster) way to get the current timestamp as an integer. + _.now = Date.now || function() { return new Date().getTime(); }; + + // List of HTML entities for escaping. + var entityMap = { + escape: { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + "'": ''' + } + }; + entityMap.unescape = _.invert(entityMap.escape); + + // Regexes containing the keys and values listed immediately above. + var entityRegexes = { + escape: new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'), + unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g') }; - // Escape a string for HTML interpolation. - _.escape = function(string) { - return (''+string).replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>').replace(/"/g, '"').replace(/'/g, ''').replace(/\//g,'/'); + // Functions for escaping and unescaping strings to/from HTML interpolation. + _.each(['escape', 'unescape'], function(method) { + _[method] = function(string) { + if (string == null) return ''; + return ('' + string).replace(entityRegexes[method], function(match) { + return entityMap[method][match]; + }); + }; + }); + + // If the value of the named `property` is a function then invoke it with the + // `object` as context; otherwise, return it. + _.result = function(object, property) { + if (object == null) return void 0; + var value = object[property]; + return _.isFunction(value) ? value.call(object) : value; }; - // Add your own custom functions to the Underscore object, ensuring that - // they're correctly added to the OOP wrapper as well. + // Add your own custom functions to the Underscore object. _.mixin = function(obj) { - each(_.functions(obj), function(name){ - addToWrapper(name, _[name] = obj[name]); + each(_.functions(obj), function(name) { + var func = _[name] = obj[name]; + _.prototype[name] = function() { + var args = [this._wrapped]; + push.apply(args, arguments); + return result.call(this, func.apply(_, args)); + }; }); }; @@ -880,7 +1185,7 @@ // Useful for temporary DOM ids. var idCounter = 0; _.uniqueId = function(prefix) { - var id = idCounter++; + var id = ++idCounter + ''; return prefix ? prefix + id : id; }; @@ -895,41 +1200,80 @@ // When customizing `templateSettings`, if you don't want to define an // interpolation, evaluation or escaping regex, we need one that is // guaranteed not to match. - var noMatch = /.^/; + var noMatch = /(.)^/; - // Within an interpolation, evaluation, or escaping, remove HTML escaping - // that had been previously added. - var unescape = function(code) { - return code.replace(/\\\\/g, '\\').replace(/\\'/g, "'"); + // Certain characters need to be escaped so that they can be put into a + // string literal. + var escapes = { + "'": "'", + '\\': '\\', + '\r': 'r', + '\n': 'n', + '\t': 't', + '\u2028': 'u2028', + '\u2029': 'u2029' }; + var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g; + // JavaScript micro-templating, similar to John Resig's implementation. // Underscore templating handles arbitrary delimiters, preserves whitespace, // and correctly escapes quotes within interpolated code. - _.template = function(str, data) { - var c = _.templateSettings; - var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' + - 'with(obj||{}){__p.push(\'' + - str.replace(/\\/g, '\\\\') - .replace(/'/g, "\\'") - .replace(c.escape || noMatch, function(match, code) { - return "',_.escape(" + unescape(code) + "),'"; - }) - .replace(c.interpolate || noMatch, function(match, code) { - return "'," + unescape(code) + ",'"; - }) - .replace(c.evaluate || noMatch, function(match, code) { - return "');" + unescape(code).replace(/[\r\n\t]/g, ' ') + ";__p.push('"; - }) - .replace(/\r/g, '\\r') - .replace(/\n/g, '\\n') - .replace(/\t/g, '\\t') - + "');}return __p.join('');"; - var func = new Function('obj', '_', tmpl); - if (data) return func(data, _); - return function(data) { - return func.call(this, data, _); + _.template = function(text, data, settings) { + var render; + settings = _.defaults({}, settings, _.templateSettings); + + // Combine delimiters into one regular expression via alternation. + var matcher = new RegExp([ + (settings.escape || noMatch).source, + (settings.interpolate || noMatch).source, + (settings.evaluate || noMatch).source + ].join('|') + '|$', 'g'); + + // Compile the template source, escaping string literals appropriately. + var index = 0; + var source = "__p+='"; + text.replace(matcher, function(match, escape, interpolate, evaluate, offset) { + source += text.slice(index, offset) + .replace(escaper, function(match) { return '\\' + escapes[match]; }); + + if (escape) { + source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'"; + } + if (interpolate) { + source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'"; + } + if (evaluate) { + source += "';\n" + evaluate + "\n__p+='"; + } + index = offset + match.length; + return match; + }); + source += "';\n"; + + // If a variable is not specified, place data values in local scope. + if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n'; + + source = "var __t,__p='',__j=Array.prototype.join," + + "print=function(){__p+=__j.call(arguments,'');};\n" + + source + "return __p;\n"; + + try { + render = new Function(settings.variable || 'obj', '_', source); + } catch (e) { + e.source = source; + throw e; + } + + if (data) return render(data, _); + var template = function(data) { + return render.call(this, data, _); }; + + // Provide the compiled function source as a convenience for precompilation. + template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}'; + + return template; }; // Add a "chain" function, which will delegate to the wrapper. @@ -937,29 +1281,15 @@ return _(obj).chain(); }; - // The OOP Wrapper + // OOP // --------------- - // If Underscore is called as a function, it returns a wrapped object that // can be used OO-style. This wrapper holds altered versions of all the // underscore functions. Wrapped objects may be chained. - var wrapper = function(obj) { this._wrapped = obj; }; - - // Expose `wrapper.prototype` as `_.prototype` - _.prototype = wrapper.prototype; // Helper function to continue chaining intermediate results. - var result = function(obj, chain) { - return chain ? _(obj).chain() : obj; - }; - - // A method to easily add functions to the OOP wrapper. - var addToWrapper = function(name, func) { - wrapper.prototype[name] = function() { - var args = slice.call(arguments); - unshift.call(args, this._wrapped); - return result(func.apply(_, args), this._chain); - }; + var result = function(obj) { + return this._chain ? _(obj).chain() : obj; }; // Add all of the Underscore functions to the wrapper object. @@ -968,32 +1298,47 @@ // Add all mutator Array functions to the wrapper. each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) { var method = ArrayProto[name]; - wrapper.prototype[name] = function() { - var wrapped = this._wrapped; - method.apply(wrapped, arguments); - var length = wrapped.length; - if ((name == 'shift' || name == 'splice') && length === 0) delete wrapped[0]; - return result(wrapped, this._chain); + _.prototype[name] = function() { + var obj = this._wrapped; + method.apply(obj, arguments); + if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0]; + return result.call(this, obj); }; }); // Add all accessor Array functions to the wrapper. each(['concat', 'join', 'slice'], function(name) { var method = ArrayProto[name]; - wrapper.prototype[name] = function() { - return result(method.apply(this._wrapped, arguments), this._chain); + _.prototype[name] = function() { + return result.call(this, method.apply(this._wrapped, arguments)); }; }); - // Start chaining a wrapped Underscore object. - wrapper.prototype.chain = function() { - this._chain = true; - return this; - }; + _.extend(_.prototype, { - // Extracts the result from a wrapped and chained object. - wrapper.prototype.value = function() { - return this._wrapped; - }; + // Start chaining a wrapped Underscore object. + chain: function() { + this._chain = true; + return this; + }, + // Extracts the result from a wrapped and chained object. + value: function() { + return this._wrapped; + } + + }); + + // AMD registration happens at the end for compatibility with AMD loaders + // that may not enforce next-turn semantics on modules. Even though general + // practice for AMD registration is to be anonymous, underscore registers + // as a named module because, like jQuery, it is a base library that is + // popular enough to be bundled in a third party lib, but not be part of + // an AMD load request. Those cases could generate an error when an + // anonymous define() is called outside of a loader request. + if (typeof define === 'function' && define.amd) { + define('underscore', [], function() { + return _; + }); + } }).call(this); diff --git a/addons/web/static/lib/underscore/underscore.string.js b/addons/web/static/lib/underscore/underscore.string.js index d0b6ff1ffb3..01226d91513 100644 --- a/addons/web/static/lib/underscore/underscore.string.js +++ b/addons/web/static/lib/underscore/underscore.string.js @@ -1,45 +1,53 @@ -// Underscore.string -// (c) 2010 Esa-Matti Suuronen <esa-matti aet suuronen dot org> -// Underscore.strings is freely distributable under the terms of the MIT license. -// Documentation: https://github.com/epeli/underscore.string -// Some code is borrowed from MooTools and Alexandru Marasteanu. - -// Version 1.2.0 - -(function(root){ +// Underscore.string +// (c) 2010 Esa-Matti Suuronen <esa-matti aet suuronen dot org> +// Underscore.string is freely distributable under the terms of the MIT license. +// Documentation: https://github.com/epeli/underscore.string +// Some code is borrowed from MooTools and Alexandru Marasteanu. +// Version '2.3.0' + +!function(root, String){ 'use strict'; // Defining helper functions. var nativeTrim = String.prototype.trim; + var nativeTrimRight = String.prototype.trimRight; + var nativeTrimLeft = String.prototype.trimLeft; var parseNumber = function(source) { return source * 1 || 0; }; - var strRepeat = function(i, m) { - for (var o = []; m > 0; o[--m] = i) {} - return o.join(''); + var strRepeat = function(str, qty){ + if (qty < 1) return ''; + var result = ''; + while (qty > 0) { + if (qty & 1) result += str; + qty >>= 1, str += str; + } + return result; }; - var slice = function(a){ - return Array.prototype.slice.call(a); - }; + var slice = [].slice; - var defaultToWhiteSpace = function(characters){ - if (characters) { - return _s.escapeRegExp(characters); - } - return '\\s'; + var defaultToWhiteSpace = function(characters) { + if (characters == null) + return '\\s'; + else if (characters.source) + return characters.source; + else + return '[' + _s.escapeRegExp(characters) + ']'; }; - var sArgs = function(method){ - return function(){ - var args = slice(arguments); - for(var i=0; i<args.length; i++) - args[i] = args[i] == null ? '' : '' + args[i]; - return method.apply(null, args); - }; + var escapeChars = { + lt: '<', + gt: '>', + quot: '"', + apos: "'", + amp: '&' }; + var reversedEscapeChars = {}; + for(var key in escapeChars){ reversedEscapeChars[escapeChars[key]] = key; } + // sprintf() for JavaScript 0.7-beta1 // http://www.diveintojavascript.com/projects/javascript-sprintf // @@ -168,213 +176,238 @@ var _s = { - VERSION: '1.2.0', + VERSION: '2.3.0', - isBlank: sArgs(function(str){ + isBlank: function(str){ + if (str == null) str = ''; return (/^\s*$/).test(str); - }), - - stripTags: sArgs(function(str){ - return str.replace(/<\/?[^>]+>/ig, ''); - }), - - capitalize : sArgs(function(str) { - return str.charAt(0).toUpperCase() + str.substring(1).toLowerCase(); - }), - - chop: sArgs(function(str, step){ - step = parseNumber(step) || str.length; - var arr = []; - for (var i = 0; i < str.length;) { - arr.push(str.slice(i,i + step)); - i = i + step; - } - return arr; - }), - - clean: sArgs(function(str){ - return _s.strip(str.replace(/\s+/g, ' ')); - }), - - count: sArgs(function(str, substr){ - var count = 0, index; - for (var i=0; i < str.length;) { - index = str.indexOf(substr, i); - index >= 0 && count++; - i = i + (index >= 0 ? index : 0) + substr.length; - } - return count; - }), - - chars: sArgs(function(str) { - return str.split(''); - }), - - escapeHTML: sArgs(function(str) { - return str.replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>') - .replace(/"/g, '"').replace(/'/g, "'"); - }), - - unescapeHTML: sArgs(function(str) { - return str.replace(/</g, '<').replace(/>/g, '>') - .replace(/"/g, '"').replace(/'/g, "'").replace(/&/g, '&'); - }), - - escapeRegExp: sArgs(function(str){ - // From MooTools core 1.2.4 - return str.replace(/([-.*+?^${}()|[\]\/\\])/g, '\\$1'); - }), - - insert: sArgs(function(str, i, substr){ - var arr = str.split(''); - arr.splice(parseNumber(i), 0, substr); - return arr.join(''); - }), + }, - include: sArgs(function(str, needle){ - return str.indexOf(needle) !== -1; - }), + stripTags: function(str){ + if (str == null) return ''; + return String(str).replace(/<\/?[^>]+>/g, ''); + }, - join: sArgs(function(sep) { - var args = slice(arguments); - return args.join(args.shift()); - }), + capitalize : function(str){ + str = str == null ? '' : String(str); + return str.charAt(0).toUpperCase() + str.slice(1); + }, - lines: sArgs(function(str) { - return str.split("\n"); - }), + chop: function(str, step){ + if (str == null) return []; + str = String(str); + step = ~~step; + return step > 0 ? str.match(new RegExp('.{1,' + step + '}', 'g')) : [str]; + }, - reverse: sArgs(function(str){ - return Array.prototype.reverse.apply(String(str).split('')).join(''); - }), + clean: function(str){ + return _s.strip(str).replace(/\s+/g, ' '); + }, - splice: sArgs(function(str, i, howmany, substr){ - var arr = str.split(''); - arr.splice(parseNumber(i), parseNumber(howmany), substr); - return arr.join(''); - }), + count: function(str, substr){ + if (str == null || substr == null) return 0; + return String(str).split(substr).length - 1; + }, - startsWith: sArgs(function(str, starts){ - return str.length >= starts.length && str.substring(0, starts.length) === starts; - }), + chars: function(str) { + if (str == null) return []; + return String(str).split(''); + }, - endsWith: sArgs(function(str, ends){ - return str.length >= ends.length && str.substring(str.length - ends.length) === ends; - }), + swapCase: function(str) { + if (str == null) return ''; + return String(str).replace(/\S/g, function(c){ + return c === c.toUpperCase() ? c.toLowerCase() : c.toUpperCase(); + }); + }, - succ: sArgs(function(str){ - var arr = str.split(''); - arr.splice(str.length-1, 1, String.fromCharCode(str.charCodeAt(str.length-1) + 1)); - return arr.join(''); - }), - - titleize: sArgs(function(str){ - var arr = str.split(' '), - word; - for (var i=0; i < arr.length; i++) { - word = arr[i].split(''); - if(typeof word[0] !== 'undefined') word[0] = word[0].toUpperCase(); - i+1 === arr.length ? arr[i] = word.join('') : arr[i] = word.join('') + ' '; - } - return arr.join(''); - }), + escapeHTML: function(str) { + if (str == null) return ''; + return String(str).replace(/[&<>"']/g, function(m){ return '&' + reversedEscapeChars[m] + ';'; }); + }, - camelize: sArgs(function(str){ - return _s.trim(str).replace(/(\-|_|\s)+(.)?/g, function(match, separator, chr) { - return chr ? chr.toUpperCase() : ''; + unescapeHTML: function(str) { + if (str == null) return ''; + return String(str).replace(/\&([^;]+);/g, function(entity, entityCode){ + var match; + + if (entityCode in escapeChars) { + return escapeChars[entityCode]; + } else if (match = entityCode.match(/^#x([\da-fA-F]+)$/)) { + return String.fromCharCode(parseInt(match[1], 16)); + } else if (match = entityCode.match(/^#(\d+)$/)) { + return String.fromCharCode(~~match[1]); + } else { + return entity; + } }); - }), + }, + + escapeRegExp: function(str){ + if (str == null) return ''; + return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1'); + }, + + splice: function(str, i, howmany, substr){ + var arr = _s.chars(str); + arr.splice(~~i, ~~howmany, substr); + return arr.join(''); + }, + + insert: function(str, i, substr){ + return _s.splice(str, i, 0, substr); + }, + + include: function(str, needle){ + if (needle === '') return true; + if (str == null) return false; + return String(str).indexOf(needle) !== -1; + }, + + join: function() { + var args = slice.call(arguments), + separator = args.shift(); + + if (separator == null) separator = ''; + + return args.join(separator); + }, + + lines: function(str) { + if (str == null) return []; + return String(str).split("\n"); + }, + + reverse: function(str){ + return _s.chars(str).reverse().join(''); + }, + + startsWith: function(str, starts){ + if (starts === '') return true; + if (str == null || starts == null) return false; + str = String(str); starts = String(starts); + return str.length >= starts.length && str.slice(0, starts.length) === starts; + }, + + endsWith: function(str, ends){ + if (ends === '') return true; + if (str == null || ends == null) return false; + str = String(str); ends = String(ends); + return str.length >= ends.length && str.slice(str.length - ends.length) === ends; + }, + + succ: function(str){ + if (str == null) return ''; + str = String(str); + return str.slice(0, -1) + String.fromCharCode(str.charCodeAt(str.length-1) + 1); + }, + + titleize: function(str){ + if (str == null) return ''; + return String(str).replace(/(?:^|\s)\S/g, function(c){ return c.toUpperCase(); }); + }, + + camelize: function(str){ + return _s.trim(str).replace(/[-_\s]+(.)?/g, function(match, c){ return c.toUpperCase(); }); + }, underscored: function(str){ - return _s.trim(str).replace(/([a-z\d])([A-Z]+)/g, '$1_$2').replace(/\-|\s+/g, '_').toLowerCase(); + return _s.trim(str).replace(/([a-z\d])([A-Z]+)/g, '$1_$2').replace(/[-\s]+/g, '_').toLowerCase(); }, dasherize: function(str){ - return _s.trim(str).replace(/([a-z\d])([A-Z]+)/g, '$1-$2').replace(/^([A-Z]+)/, '-$1').replace(/\_|\s+/g, '-').toLowerCase(); + return _s.trim(str).replace(/([A-Z])/g, '-$1').replace(/[-_\s]+/g, '-').toLowerCase(); + }, + + classify: function(str){ + return _s.titleize(String(str).replace(/_/g, ' ')).replace(/\s/g, ''); }, humanize: function(str){ - return _s.capitalize(this.underscored(str).replace(/_id$/,'').replace(/_/g, ' ')); + return _s.capitalize(_s.underscored(str).replace(/_id$/,'').replace(/_/g, ' ')); }, - trim: sArgs(function(str, characters){ - if (!characters && nativeTrim) { - return nativeTrim.call(str); - } + trim: function(str, characters){ + if (str == null) return ''; + if (!characters && nativeTrim) return nativeTrim.call(str); characters = defaultToWhiteSpace(characters); - return str.replace(new RegExp('\^[' + characters + ']+|[' + characters + ']+$', 'g'), ''); - }), + return String(str).replace(new RegExp('\^' + characters + '+|' + characters + '+$', 'g'), ''); + }, - ltrim: sArgs(function(str, characters){ + ltrim: function(str, characters){ + if (str == null) return ''; + if (!characters && nativeTrimLeft) return nativeTrimLeft.call(str); characters = defaultToWhiteSpace(characters); - return str.replace(new RegExp('\^[' + characters + ']+', 'g'), ''); - }), + return String(str).replace(new RegExp('^' + characters + '+'), ''); + }, - rtrim: sArgs(function(str, characters){ + rtrim: function(str, characters){ + if (str == null) return ''; + if (!characters && nativeTrimRight) return nativeTrimRight.call(str); characters = defaultToWhiteSpace(characters); - return str.replace(new RegExp('[' + characters + ']+$', 'g'), ''); - }), + return String(str).replace(new RegExp(characters + '+$'), ''); + }, - truncate: sArgs(function(str, length, truncateStr){ - truncateStr = truncateStr || '...'; - length = parseNumber(length); - return str.length > length ? str.slice(0,length) + truncateStr : str; - }), + truncate: function(str, length, truncateStr){ + if (str == null) return ''; + str = String(str); truncateStr = truncateStr || '...'; + length = ~~length; + return str.length > length ? str.slice(0, length) + truncateStr : str; + }, /** * _s.prune: a more elegant version of truncate * prune extra chars, never leaving a half-chopped word. - * @author github.com/sergiokas + * @author github.com/rwz */ - prune: sArgs(function(str, length, pruneStr){ - pruneStr = pruneStr || '...'; - length = parseNumber(length); - var pruned = ''; - - // Check if we're in the middle of a word - if( str.substring(length-1, length+1).search(/^\w\w$/) === 0 ) - pruned = _s.rtrim(str.slice(0,length).replace(/([\W][\w]*)$/,'')); - else - pruned = _s.rtrim(str.slice(0,length)); + prune: function(str, length, pruneStr){ + if (str == null) return ''; - pruned = pruned.replace(/\W+$/,''); + str = String(str); length = ~~length; + pruneStr = pruneStr != null ? String(pruneStr) : '...'; - return (pruned.length+pruneStr.length>str.length) ? str : pruned + pruneStr; - }), + if (str.length <= length) return str; + + var tmpl = function(c){ return c.toUpperCase() !== c.toLowerCase() ? 'A' : ' '; }, + template = str.slice(0, length+1).replace(/.(?=\W*\w*$)/g, tmpl); // 'Hello, world' -> 'HellAA AAAAA' + + if (template.slice(template.length-2).match(/\w\w/)) + template = template.replace(/\s*\S+$/, ''); + else + template = _s.rtrim(template.slice(0, template.length-1)); + + return (template+pruneStr).length > str.length ? str : str.slice(0, template.length)+pruneStr; + }, words: function(str, delimiter) { - return String(str).split(delimiter || " "); + if (_s.isBlank(str)) return []; + return _s.trim(str, delimiter).split(delimiter || /\s+/); }, - pad: sArgs(function(str, length, padStr, type) { - var padding = '', - padlen = 0; + pad: function(str, length, padStr, type) { + str = str == null ? '' : String(str); + length = ~~length; + + var padlen = 0; - length = parseNumber(length); + if (!padStr) + padStr = ' '; + else if (padStr.length > 1) + padStr = padStr.charAt(0); - if (!padStr) { padStr = ' '; } - else if (padStr.length > 1) { padStr = padStr.charAt(0); } switch(type) { case 'right': - padlen = (length - str.length); - padding = strRepeat(padStr, padlen); - str = str+padding; - break; + padlen = length - str.length; + return str + strRepeat(padStr, padlen); case 'both': - padlen = (length - str.length); - padding = { - 'left' : strRepeat(padStr, Math.ceil(padlen/2)), - 'right': strRepeat(padStr, Math.floor(padlen/2)) - }; - str = padding.left+str+padding.right; - break; + padlen = length - str.length; + return strRepeat(padStr, Math.ceil(padlen/2)) + str + + strRepeat(padStr, Math.floor(padlen/2)); default: // 'left' - padlen = (length - str.length); - padding = strRepeat(padStr, padlen);; - str = padding+str; + padlen = length - str.length; + return strRepeat(padStr, padlen) + str; } - return str; - }), + }, lpad: function(str, length, padStr) { return _s.pad(str, length, padStr); @@ -396,41 +429,140 @@ }, toNumber: function(str, decimals) { - var num = parseNumber(parseNumber(str).toFixed(parseNumber(decimals))); - return (!(num === 0 && (str !== "0" && str !== 0))) ? num : Number.NaN; + if (str == null || str == '') return 0; + str = String(str); + var num = parseNumber(parseNumber(str).toFixed(~~decimals)); + return num === 0 && !str.match(/^0+$/) ? Number.NaN : num; + }, + + numberFormat : function(number, dec, dsep, tsep) { + if (isNaN(number) || number == null) return ''; + + number = number.toFixed(~~dec); + tsep = tsep || ','; + + var parts = number.split('.'), fnums = parts[0], + decimals = parts[1] ? (dsep || '.') + parts[1] : ''; + + return fnums.replace(/(\d)(?=(?:\d{3})+$)/g, '$1' + tsep) + decimals; + }, + + strRight: function(str, sep){ + if (str == null) return ''; + str = String(str); sep = sep != null ? String(sep) : sep; + var pos = !sep ? -1 : str.indexOf(sep); + return ~pos ? str.slice(pos+sep.length, str.length) : str; + }, + + strRightBack: function(str, sep){ + if (str == null) return ''; + str = String(str); sep = sep != null ? String(sep) : sep; + var pos = !sep ? -1 : str.lastIndexOf(sep); + return ~pos ? str.slice(pos+sep.length, str.length) : str; + }, + + strLeft: function(str, sep){ + if (str == null) return ''; + str = String(str); sep = sep != null ? String(sep) : sep; + var pos = !sep ? -1 : str.indexOf(sep); + return ~pos ? str.slice(0, pos) : str; + }, + + strLeftBack: function(str, sep){ + if (str == null) return ''; + str += ''; sep = sep != null ? ''+sep : sep; + var pos = str.lastIndexOf(sep); + return ~pos ? str.slice(0, pos) : str; }, - strRight: sArgs(function(sourceStr, sep){ - var pos = (!sep) ? -1 : sourceStr.indexOf(sep); - return (pos != -1) ? sourceStr.slice(pos+sep.length, sourceStr.length) : sourceStr; - }), + toSentence: function(array, separator, lastSeparator, serial) { + separator = separator || ', ' + lastSeparator = lastSeparator || ' and ' + var a = array.slice(), lastMember = a.pop(); - strRightBack: sArgs(function(sourceStr, sep){ - var pos = (!sep) ? -1 : sourceStr.lastIndexOf(sep); - return (pos != -1) ? sourceStr.slice(pos+sep.length, sourceStr.length) : sourceStr; - }), + if (array.length > 2 && serial) lastSeparator = _s.rtrim(separator) + lastSeparator; - strLeft: sArgs(function(sourceStr, sep){ - var pos = (!sep) ? -1 : sourceStr.indexOf(sep); - return (pos != -1) ? sourceStr.slice(0, pos) : sourceStr; - }), + return a.length ? a.join(separator) + lastSeparator + lastMember : lastMember; + }, + + toSentenceSerial: function() { + var args = slice.call(arguments); + args[3] = true; + return _s.toSentence.apply(_s, args); + }, + + slugify: function(str) { + if (str == null) return ''; + + var from = "ąàáäâãåæćęèéëêìíïîłńòóöôõøùúüûñçżź", + to = "aaaaaaaaceeeeeiiiilnoooooouuuunczz", + regex = new RegExp(defaultToWhiteSpace(from), 'g'); + + str = String(str).toLowerCase().replace(regex, function(c){ + var index = from.indexOf(c); + return to.charAt(index) || '-'; + }); - strLeftBack: sArgs(function(sourceStr, sep){ - var pos = sourceStr.lastIndexOf(sep); - return (pos != -1) ? sourceStr.slice(0, pos) : sourceStr; - }), + return _s.dasherize(str.replace(/[^\w\s-]/g, '')); + }, + + surround: function(str, wrapper) { + return [wrapper, str, wrapper].join(''); + }, + + quote: function(str) { + return _s.surround(str, '"'); + }, exports: function() { var result = {}; for (var prop in this) { - if (!this.hasOwnProperty(prop) || prop == 'include' || prop == 'contains' || prop == 'reverse') continue; + if (!this.hasOwnProperty(prop) || prop.match(/^(?:include|contains|reverse)$/)) continue; result[prop] = this[prop]; } return result; - } + }, + repeat: function(str, qty, separator){ + if (str == null) return ''; + + qty = ~~qty; + + // using faster implementation if separator is not needed; + if (separator == null) return strRepeat(String(str), qty); + + // this one is about 300x slower in Google Chrome + for (var repeat = []; qty > 0; repeat[--qty] = str) {} + return repeat.join(separator); + }, + + levenshtein: function(str1, str2) { + if (str1 == null && str2 == null) return 0; + if (str1 == null) return String(str2).length; + if (str2 == null) return String(str1).length; + + str1 = String(str1); str2 = String(str2); + + var current = [], prev, value; + + for (var i = 0; i <= str2.length; i++) + for (var j = 0; j <= str1.length; j++) { + if (i && j) + if (str1.charAt(j - 1) === str2.charAt(i - 1)) + value = prev; + else + value = Math.min(current[j], current[j - 1], prev) + 1; + else + value = i + j; + + prev = current[j]; + current[j] = value; + } + + return current.pop(); + } }; // Aliases @@ -439,9 +571,10 @@ _s.lstrip = _s.ltrim; _s.rstrip = _s.rtrim; _s.center = _s.lrpad; - _s.ljust = _s.lpad; - _s.rjust = _s.rpad; + _s.rjust = _s.lpad; + _s.ljust = _s.rpad; _s.contains = _s.include; + _s.q = _s.quote; // CommonJS module is defined if (typeof exports !== 'undefined') { @@ -451,18 +584,17 @@ } exports._s = _s; - // Integrate with Underscore.js - } else if (typeof root._ !== 'undefined') { - // root._.mixin(_s); - root._.string = _s; - root._.str = root._.string; + } else if (typeof define === 'function' && define.amd) { + // Register as a named module with AMD. + define('underscore.string', [], function() { + return _s; + }); - // Or define it } else { - root._ = { - string: _s, - str: _s - }; + // Integrate with Underscore.js if defined + // or create our own underscore object. + root._ = root._ || {}; + root._.string = root._.str = _s; } -}(this || window)); +}(this, String);
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