github-migration/backbone-fails
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start this thing

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John Bintz 2011-05-17 19:43:02 -04:00
commit ac2049bc55
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4
.gitignore vendored Normal file
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*.gem
.bundle
Gemfile.lock
pkg/*

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Gemfile Normal file
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source "http://rubygems.org"
# Specify your gem's dependencies in backbone-rails.gemspec
gemspec

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README.md Normal file
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Easily get Backbone.js and its dependencies into your app. Maybe it can even work with Rails 3.1 soon?

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require 'bundler'
Bundler::GemHelper.install_tasks
desc 'Update Backbone.js and Underscore.js'
task :update_backbone do
[
'http://documentcloud.github.com/backbone/backbone.js',
'http://documentcloud.github.com/backbone/backbone-min.js',
'http://documentcloud.github.com/underscore/underscore.js',
'http://documentcloud.github.com/underscore/underscore-min.js',
'https://github.com/douglascrockford/JSON-js/raw/master/json2.js'
].each do |url|
system %{curl #{url} > vendor/assets/javascripts/#{File.split(url).last}}
end
end

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# -*- encoding: utf-8 -*-
$:.push File.expand_path("../lib", __FILE__)
require "backbone-rails/version"
Gem::Specification.new do |s|
s.name = "backbone-rails"
s.version = BackboneRails::VERSION
s.platform = Gem::Platform::RUBY
s.authors = ["TODO: Write your name"]
s.email = ["TODO: Write your email address"]
s.homepage = ""
s.summary = %q{TODO: Write a gem summary}
s.description = %q{TODO: Write a gem description}
s.rubyforge_project = "backbone-rails"
s.files = `git ls-files`.split("\n")
s.test_files = `git ls-files -- {test,spec,features}/*`.split("\n")
s.executables = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
s.require_paths = ["lib"]
end

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require 'rails'
module BackboneRails
class Railtie < ::Rails::Railtie
generators do
require 'backbone-rails/generators'
end
end
end

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require 'rails/generators'
module Backbone
class Install < ::Rails::Generators::Base
JAVASCRIPTS = File.expand_path('../../../vendor/assets/javascripts', __FILE__)
def self.source_root
@source_root ||= JAVASCRIPTS
end
def copy_backbone
Dir[File.join(JAVASCRIPTS, '*.js')].each do |file|
file = File.split(file).last
copy_file file, "public/javascripts/#{file}"
end
end
end
end

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module BackboneRails
VERSION = "0.0.1"
end

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// Backbone.js 0.3.3
// (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
// Backbone may be freely distributed under the MIT license.
// For all details and documentation:
// http://documentcloud.github.com/backbone
(function(){var e;e=typeof exports!=="undefined"?exports:this.Backbone={};e.VERSION="0.3.3";var f=this._;if(!f&&typeof require!=="undefined")f=require("underscore")._;var h=this.jQuery||this.Zepto;e.emulateHTTP=false;e.emulateJSON=false;e.Events={bind:function(a,b){this._callbacks||(this._callbacks={});(this._callbacks[a]||(this._callbacks[a]=[])).push(b);return this},unbind:function(a,b){var c;if(a){if(c=this._callbacks)if(b){c=c[a];if(!c)return this;for(var d=0,g=c.length;d<g;d++)if(b===c[d]){c.splice(d,
1);break}}else c[a]=[]}else this._callbacks={};return this},trigger:function(a){var b,c,d,g;if(!(c=this._callbacks))return this;if(b=c[a]){d=0;for(g=b.length;d<g;d++)b[d].apply(this,Array.prototype.slice.call(arguments,1))}if(b=c.all){d=0;for(g=b.length;d<g;d++)b[d].apply(this,arguments)}return this}};e.Model=function(a,b){a||(a={});if(this.defaults)a=f.extend({},this.defaults,a);this.attributes={};this._escapedAttributes={};this.cid=f.uniqueId("c");this.set(a,{silent:true});this._previousAttributes=
f.clone(this.attributes);if(b&&b.collection)this.collection=b.collection;this.initialize(a,b)};f.extend(e.Model.prototype,e.Events,{_previousAttributes:null,_changed:false,initialize:function(){},toJSON:function(){return f.clone(this.attributes)},get:function(a){return this.attributes[a]},escape:function(a){var b;if(b=this._escapedAttributes[a])return b;b=this.attributes[a];return this._escapedAttributes[a]=(b==null?"":b).replace(/&(?!\w+;)/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,
"&quot;")},set:function(a,b){b||(b={});if(!a)return this;if(a.attributes)a=a.attributes;var c=this.attributes,d=this._escapedAttributes;if(!b.silent&&this.validate&&!this._performValidation(a,b))return false;if("id"in a)this.id=a.id;for(var g in a){var i=a[g];if(!f.isEqual(c[g],i)){c[g]=i;delete d[g];if(!b.silent){this._changed=true;this.trigger("change:"+g,this,i,b)}}}!b.silent&&this._changed&&this.change(b);return this},unset:function(a,b){b||(b={});var c={};c[a]=void 0;if(!b.silent&&this.validate&&
!this._performValidation(c,b))return false;delete this.attributes[a];delete this._escapedAttributes[a];if(!b.silent){this._changed=true;this.trigger("change:"+a,this,void 0,b);this.change(b)}return this},clear:function(a){a||(a={});var b=this.attributes,c={};for(attr in b)c[attr]=void 0;if(!a.silent&&this.validate&&!this._performValidation(c,a))return false;this.attributes={};this._escapedAttributes={};if(!a.silent){this._changed=true;for(attr in b)this.trigger("change:"+attr,this,void 0,a);this.change(a)}return this},
fetch:function(a){a||(a={});var b=this,c=j(a.error,b,a);(this.sync||e.sync)("read",this,function(d){if(!b.set(b.parse(d),a))return false;a.success&&a.success(b,d)},c);return this},save:function(a,b){b||(b={});if(a&&!this.set(a,b))return false;var c=this,d=j(b.error,c,b),g=this.isNew()?"create":"update";(this.sync||e.sync)(g,this,function(i){if(!c.set(c.parse(i),b))return false;b.success&&b.success(c,i)},d);return this},destroy:function(a){a||(a={});var b=this,c=j(a.error,b,a);(this.sync||e.sync)("delete",
this,function(d){b.collection&&b.collection.remove(b);a.success&&a.success(b,d)},c);return this},url:function(){var a=k(this.collection);if(this.isNew())return a;return a+(a.charAt(a.length-1)=="/"?"":"/")+this.id},parse:function(a){return a},clone:function(){return new this.constructor(this)},isNew:function(){return!this.id},change:function(a){this.trigger("change",this,a);this._previousAttributes=f.clone(this.attributes);this._changed=false},hasChanged:function(a){if(a)return this._previousAttributes[a]!=
this.attributes[a];return this._changed},changedAttributes:function(a){a||(a=this.attributes);var b=this._previousAttributes,c=false,d;for(d in a)if(!f.isEqual(b[d],a[d])){c=c||{};c[d]=a[d]}return c},previous:function(a){if(!a||!this._previousAttributes)return null;return this._previousAttributes[a]},previousAttributes:function(){return f.clone(this._previousAttributes)},_performValidation:function(a,b){var c=this.validate(a);if(c){b.error?b.error(this,c):this.trigger("error",this,c,b);return false}return true}});
e.Collection=function(a,b){b||(b={});if(b.comparator){this.comparator=b.comparator;delete b.comparator}this._boundOnModelEvent=f.bind(this._onModelEvent,this);this._reset();a&&this.refresh(a,{silent:true});this.initialize(a,b)};f.extend(e.Collection.prototype,e.Events,{model:e.Model,initialize:function(){},toJSON:function(){return this.map(function(a){return a.toJSON()})},add:function(a,b){if(f.isArray(a))for(var c=0,d=a.length;c<d;c++)this._add(a[c],b);else this._add(a,b);return this},remove:function(a,
b){if(f.isArray(a))for(var c=0,d=a.length;c<d;c++)this._remove(a[c],b);else this._remove(a,b);return this},get:function(a){if(a==null)return null;return this._byId[a.id!=null?a.id:a]},getByCid:function(a){return a&&this._byCid[a.cid||a]},at:function(a){return this.models[a]},sort:function(a){a||(a={});if(!this.comparator)throw Error("Cannot sort a set without a comparator");this.models=this.sortBy(this.comparator);a.silent||this.trigger("refresh",this,a);return this},pluck:function(a){return f.map(this.models,
function(b){return b.get(a)})},refresh:function(a,b){a||(a=[]);b||(b={});this._reset();this.add(a,{silent:true});b.silent||this.trigger("refresh",this,b);return this},fetch:function(a){a||(a={});var b=this,c=j(a.error,b,a);(this.sync||e.sync)("read",this,function(d){b.refresh(b.parse(d));a.success&&a.success(b,d)},c);return this},create:function(a,b){var c=this;b||(b={});if(a instanceof e.Model)a.collection=c;else a=new this.model(a,{collection:c});return a.save(null,{success:function(d,g){c.add(d);
b.success&&b.success(d,g)},error:b.error})},parse:function(a){return a},chain:function(){return f(this.models).chain()},_reset:function(){this.length=0;this.models=[];this._byId={};this._byCid={}},_add:function(a,b){b||(b={});a instanceof e.Model||(a=new this.model(a,{collection:this}));var c=this.getByCid(a);if(c)throw Error(["Can't add the same model to a set twice",c.id]);this._byId[a.id]=a;this._byCid[a.cid]=a;a.collection=this;this.models.splice(this.comparator?this.sortedIndex(a,this.comparator):
this.length,0,a);a.bind("all",this._boundOnModelEvent);this.length++;b.silent||a.trigger("add",a,this,b);return a},_remove:function(a,b){b||(b={});a=this.getByCid(a)||this.get(a);if(!a)return null;delete this._byId[a.id];delete this._byCid[a.cid];delete a.collection;this.models.splice(this.indexOf(a),1);this.length--;b.silent||a.trigger("remove",a,this,b);a.unbind("all",this._boundOnModelEvent);return a},_onModelEvent:function(a,b){if(a==="change:id"){delete this._byId[b.previous("id")];this._byId[b.id]=
b}this.trigger.apply(this,arguments)}});f.each(["forEach","each","map","reduce","reduceRight","find","detect","filter","select","reject","every","all","some","any","include","invoke","max","min","sortBy","sortedIndex","toArray","size","first","rest","last","without","indexOf","lastIndexOf","isEmpty"],function(a){e.Collection.prototype[a]=function(){return f[a].apply(f,[this.models].concat(f.toArray(arguments)))}});e.Controller=function(a){a||(a={});if(a.routes)this.routes=a.routes;this._bindRoutes();
this.initialize(a)};var o=/:([\w\d]+)/g,p=/\*([\w\d]+)/g;f.extend(e.Controller.prototype,e.Events,{initialize:function(){},route:function(a,b,c){e.history||(e.history=new e.History);f.isRegExp(a)||(a=this._routeToRegExp(a));e.history.route(a,f.bind(function(d){d=this._extractParameters(a,d);c.apply(this,d);this.trigger.apply(this,["route:"+b].concat(d))},this))},saveLocation:function(a){e.history.saveLocation(a)},_bindRoutes:function(){if(this.routes)for(var a in this.routes){var b=this.routes[a];
this.route(a,b,this[b])}},_routeToRegExp:function(a){a=a.replace(o,"([^/]*)").replace(p,"(.*?)");return RegExp("^"+a+"$")},_extractParameters:function(a,b){return a.exec(b).slice(1)}});e.History=function(){this.handlers=[];this.fragment=this.getFragment();f.bindAll(this,"checkUrl")};var l=/^#*/;f.extend(e.History.prototype,{interval:50,getFragment:function(a){return(a||window.location).hash.replace(l,"")},start:function(){var a=document.documentMode;if(a=h.browser.msie&&(!a||a<=7))this.iframe=h('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo("body")[0].contentWindow;
"onhashchange"in window&&!a?h(window).bind("hashchange",this.checkUrl):setInterval(this.checkUrl,this.interval);return this.loadUrl()},route:function(a,b){this.handlers.push({route:a,callback:b})},checkUrl:function(){var a=this.getFragment();if(a==this.fragment&&this.iframe)a=this.getFragment(this.iframe.location);if(a==this.fragment||a==decodeURIComponent(this.fragment))return false;if(this.iframe)window.location.hash=this.iframe.location.hash=a;this.loadUrl()},loadUrl:function(){var a=this.fragment=
this.getFragment();return f.any(this.handlers,function(b){if(b.route.test(a)){b.callback(a);return true}})},saveLocation:function(a){a=(a||"").replace(l,"");if(this.fragment!=a){window.location.hash=this.fragment=a;if(this.iframe&&a!=this.getFragment(this.iframe.location)){this.iframe.document.open().close();this.iframe.location.hash=a}}}});e.View=function(a){this._configure(a||{});this._ensureElement();this.delegateEvents();this.initialize(a)};var q=/^(\w+)\s*(.*)$/;f.extend(e.View.prototype,e.Events,
{tagName:"div",$:function(a){return h(a,this.el)},initialize:function(){},render:function(){return this},remove:function(){h(this.el).remove();return this},make:function(a,b,c){a=document.createElement(a);b&&h(a).attr(b);c&&h(a).html(c);return a},delegateEvents:function(a){if(a||(a=this.events)){h(this.el).unbind();for(var b in a){var c=a[b],d=b.match(q),g=d[1];d=d[2];c=f.bind(this[c],this);d===""?h(this.el).bind(g,c):h(this.el).delegate(d,g,c)}}},_configure:function(a){if(this.options)a=f.extend({},
this.options,a);if(a.model)this.model=a.model;if(a.collection)this.collection=a.collection;if(a.el)this.el=a.el;if(a.id)this.id=a.id;if(a.className)this.className=a.className;if(a.tagName)this.tagName=a.tagName;this.options=a},_ensureElement:function(){if(!this.el){var a={};if(this.id)a.id=this.id;if(this.className)a["class"]=this.className;this.el=this.make(this.tagName,a)}}});var m=function(a,b){var c=r(this,a,b);c.extend=m;return c};e.Model.extend=e.Collection.extend=e.Controller.extend=e.View.extend=
m;var s={create:"POST",update:"PUT","delete":"DELETE",read:"GET"};e.sync=function(a,b,c,d){var g=s[a];a=a==="create"||a==="update"?JSON.stringify(b.toJSON()):null;b={url:k(b),type:g,contentType:"application/json",data:a,dataType:"json",processData:false,success:c,error:d};if(e.emulateJSON){b.contentType="application/x-www-form-urlencoded";b.processData=true;b.data=a?{model:a}:{}}if(e.emulateHTTP)if(g==="PUT"||g==="DELETE"){if(e.emulateJSON)b.data._method=g;b.type="POST";b.beforeSend=function(i){i.setRequestHeader("X-HTTP-Method-Override",
g)}}h.ajax(b)};var n=function(){},r=function(a,b,c){var d;d=b&&b.hasOwnProperty("constructor")?b.constructor:function(){return a.apply(this,arguments)};n.prototype=a.prototype;d.prototype=new n;b&&f.extend(d.prototype,b);c&&f.extend(d,c);d.prototype.constructor=d;d.__super__=a.prototype;return d},k=function(a){if(!(a&&a.url))throw Error("A 'url' property or function must be specified");return f.isFunction(a.url)?a.url():a.url},j=function(a,b,c){return function(d){a?a(b,d):b.trigger("error",b,d,c)}}})();

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/*
http://www.JSON.org/json2.js
2011-02-23
Public Domain.
NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
See http://www.JSON.org/js.html
This code should be minified before deployment.
See http://javascript.crockford.com/jsmin.html
USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
NOT CONTROL.
This file creates a global JSON object containing two methods: stringify
and parse.
JSON.stringify(value, replacer, space)
value any JavaScript value, usually an object or array.
replacer an optional parameter that determines how object
values are stringified for objects. It can be a
function or an array of strings.
space an optional parameter that specifies the indentation
of nested structures. If it is omitted, the text will
be packed without extra whitespace. If it is a number,
it will specify the number of spaces to indent at each
level. If it is a string (such as '\t' or '&nbsp;'),
it contains the characters used to indent at each level.
This method produces a JSON text from a JavaScript value.
When an object value is found, if the object contains a toJSON
method, its toJSON method will be called and the result will be
stringified. A toJSON method does not serialize: it returns the
value represented by the name/value pair that should be serialized,
or undefined if nothing should be serialized. The toJSON method
will be passed the key associated with the value, and this will be
bound to the value
For example, this would serialize Dates as ISO strings.
Date.prototype.toJSON = function (key) {
function f(n) {
// Format integers to have at least two digits.
return n < 10 ? '0' + n : n;
}
return this.getUTCFullYear() + '-' +
f(this.getUTCMonth() + 1) + '-' +
f(this.getUTCDate()) + 'T' +
f(this.getUTCHours()) + ':' +
f(this.getUTCMinutes()) + ':' +
f(this.getUTCSeconds()) + 'Z';
};
You can provide an optional replacer method. It will be passed the
key and value of each member, with this bound to the containing
object. The value that is returned from your method will be
serialized. If your method returns undefined, then the member will
be excluded from the serialization.
If the replacer parameter is an array of strings, then it will be
used to select the members to be serialized. It filters the results
such that only members with keys listed in the replacer array are
stringified.
Values that do not have JSON representations, such as undefined or
functions, will not be serialized. Such values in objects will be
dropped; in arrays they will be replaced with null. You can use
a replacer function to replace those with JSON values.
JSON.stringify(undefined) returns undefined.
The optional space parameter produces a stringification of the
value that is filled with line breaks and indentation to make it
easier to read.
If the space parameter is a non-empty string, then that string will
be used for indentation. If the space parameter is a number, then
the indentation will be that many spaces.
Example:
text = JSON.stringify(['e', {pluribus: 'unum'}]);
// text is '["e",{"pluribus":"unum"}]'
text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
// text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
text = JSON.stringify([new Date()], function (key, value) {
return this[key] instanceof Date ?
'Date(' + this[key] + ')' : value;
});
// text is '["Date(---current time---)"]'
JSON.parse(text, reviver)
This method parses a JSON text to produce an object or array.
It can throw a SyntaxError exception.
The optional reviver parameter is a function that can filter and
transform the results. It receives each of the keys and values,
and its return value is used instead of the original value.
If it returns what it received, then the structure is not modified.
If it returns undefined then the member is deleted.
Example:
// Parse the text. Values that look like ISO date strings will
// be converted to Date objects.
myData = JSON.parse(text, function (key, value) {
var a;
if (typeof value === 'string') {
a =
/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
if (a) {
return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
+a[5], +a[6]));
}
}
return value;
});
myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
var d;
if (typeof value === 'string' &&
value.slice(0, 5) === 'Date(' &&
value.slice(-1) === ')') {
d = new Date(value.slice(5, -1));
if (d) {
return d;
}
}
return value;
});
This is a reference implementation. You are free to copy, modify, or
redistribute.
*/
/*jslint evil: true, strict: false, regexp: false */
/*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,
call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
lastIndex, length, parse, prototype, push, replace, slice, stringify,
test, toJSON, toString, valueOf
*/
// Create a JSON object only if one does not already exist. We create the
// methods in a closure to avoid creating global variables.
var JSON;
if (!JSON) {
JSON = {};
}
(function () {
"use strict";
function f(n) {
// Format integers to have at least two digits.
return n < 10 ? '0' + n : n;
}
if (typeof Date.prototype.toJSON !== 'function') {
Date.prototype.toJSON = function (key) {
return isFinite(this.valueOf()) ?
this.getUTCFullYear() + '-' +
f(this.getUTCMonth() + 1) + '-' +
f(this.getUTCDate()) + 'T' +
f(this.getUTCHours()) + ':' +
f(this.getUTCMinutes()) + ':' +
f(this.getUTCSeconds()) + 'Z' : null;
};
String.prototype.toJSON =
Number.prototype.toJSON =
Boolean.prototype.toJSON = function (key) {
return this.valueOf();
};
}
var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
gap,
indent,
meta = { // table of character substitutions
'\b': '\\b',
'\t': '\\t',
'\n': '\\n',
'\f': '\\f',
'\r': '\\r',
'"' : '\\"',
'\\': '\\\\'
},
rep;
function quote(string) {
// If the string contains no control characters, no quote characters, and no
// backslash characters, then we can safely slap some quotes around it.
// Otherwise we must also replace the offending characters with safe escape
// sequences.
escapable.lastIndex = 0;
return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
var c = meta[a];
return typeof c === 'string' ? c :
'\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
}) + '"' : '"' + string + '"';
}
function str(key, holder) {
// Produce a string from holder[key].
var i, // The loop counter.
k, // The member key.
v, // The member value.
length,
mind = gap,
partial,
value = holder[key];
// If the value has a toJSON method, call it to obtain a replacement value.
if (value && typeof value === 'object' &&
typeof value.toJSON === 'function') {
value = value.toJSON(key);
}
// If we were called with a replacer function, then call the replacer to
// obtain a replacement value.
if (typeof rep === 'function') {
value = rep.call(holder, key, value);
}
// What happens next depends on the value's type.
switch (typeof value) {
case 'string':
return quote(value);
case 'number':
// JSON numbers must be finite. Encode non-finite numbers as null.
return isFinite(value) ? String(value) : 'null';
case 'boolean':
case 'null':
// If the value is a boolean or null, convert it to a string. Note:
// typeof null does not produce 'null'. The case is included here in
// the remote chance that this gets fixed someday.
return String(value);
// If the type is 'object', we might be dealing with an object or an array or
// null.
case 'object':
// Due to a specification blunder in ECMAScript, typeof null is 'object',
// so watch out for that case.
if (!value) {
return 'null';
}
// Make an array to hold the partial results of stringifying this object value.
gap += indent;
partial = [];
// Is the value an array?
if (Object.prototype.toString.apply(value) === '[object Array]') {
// The value is an array. Stringify every element. Use null as a placeholder
// for non-JSON values.
length = value.length;
for (i = 0; i < length; i += 1) {
partial[i] = str(i, value) || 'null';
}
// Join all of the elements together, separated with commas, and wrap them in
// brackets.
v = partial.length === 0 ? '[]' : gap ?
'[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' :
'[' + partial.join(',') + ']';
gap = mind;
return v;
}
// If the replacer is an array, use it to select the members to be stringified.
if (rep && typeof rep === 'object') {
length = rep.length;
for (i = 0; i < length; i += 1) {
if (typeof rep[i] === 'string') {
k = rep[i];
v = str(k, value);
if (v) {
partial.push(quote(k) + (gap ? ': ' : ':') + v);
}
}
}
} else {
// Otherwise, iterate through all of the keys in the object.
for (k in value) {
if (Object.prototype.hasOwnProperty.call(value, k)) {
v = str(k, value);
if (v) {
partial.push(quote(k) + (gap ? ': ' : ':') + v);
}
}
}
}
// Join all of the member texts together, separated with commas,
// and wrap them in braces.
v = partial.length === 0 ? '{}' : gap ?
'{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' :
'{' + partial.join(',') + '}';
gap = mind;
return v;
}
}
// If the JSON object does not yet have a stringify method, give it one.
if (typeof JSON.stringify !== 'function') {
JSON.stringify = function (value, replacer, space) {
// The stringify method takes a value and an optional replacer, and an optional
// space parameter, and returns a JSON text. The replacer can be a function
// that can replace values, or an array of strings that will select the keys.
// A default replacer method can be provided. Use of the space parameter can
// produce text that is more easily readable.
var i;
gap = '';
indent = '';
// If the space parameter is a number, make an indent string containing that
// many spaces.
if (typeof space === 'number') {
for (i = 0; i < space; i += 1) {
indent += ' ';
}
// If the space parameter is a string, it will be used as the indent string.
} else if (typeof space === 'string') {
indent = space;
}
// If there is a replacer, it must be a function or an array.
// Otherwise, throw an error.
rep = replacer;
if (replacer && typeof replacer !== 'function' &&
(typeof replacer !== 'object' ||
typeof replacer.length !== 'number')) {
throw new Error('JSON.stringify');
}
// Make a fake root object containing our value under the key of ''.
// Return the result of stringifying the value.
return str('', {'': value});
};
}
// If the JSON object does not yet have a parse method, give it one.
if (typeof JSON.parse !== 'function') {
JSON.parse = function (text, reviver) {
// The parse method takes a text and an optional reviver function, and returns
// a JavaScript value if the text is a valid JSON text.
var j;
function walk(holder, key) {
// The walk method is used to recursively walk the resulting structure so
// that modifications can be made.
var k, v, value = holder[key];
if (value && typeof value === 'object') {
for (k in value) {
if (Object.prototype.hasOwnProperty.call(value, k)) {
v = walk(value, k);
if (v !== undefined) {
value[k] = v;
} else {
delete value[k];
}
}
}
}
return reviver.call(holder, key, value);
}
// Parsing happens in four stages. In the first stage, we replace certain
// Unicode characters with escape sequences. JavaScript handles many characters
// incorrectly, either silently deleting them, or treating them as line endings.
text = String(text);
cx.lastIndex = 0;
if (cx.test(text)) {
text = text.replace(cx, function (a) {
return '\\u' +
('0000' + a.charCodeAt(0).toString(16)).slice(-4);
});
}
// In the second stage, we run the text against regular expressions that look
// for non-JSON patterns. We are especially concerned with '()' and 'new'
// because they can cause invocation, and '=' because it can cause mutation.
// But just to be safe, we want to reject all unexpected forms.
// We split the second stage into 4 regexp operations in order to work around
// crippling inefficiencies in IE's and Safari's regexp engines. First we
// replace the JSON backslash pairs with '@' (a non-JSON character). Second, we
// replace all simple value tokens with ']' characters. Third, we delete all
// open brackets that follow a colon or comma or that begin the text. Finally,
// we look to see that the remaining characters are only whitespace or ']' or
// ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.
if (/^[\],:{}\s]*$/
.test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@')
.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']')
.replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {
// In the third stage we use the eval function to compile the text into a
// JavaScript structure. The '{' operator is subject to a syntactic ambiguity
// in JavaScript: it can begin a block or an object literal. We wrap the text
// in parens to eliminate the ambiguity.
j = eval('(' + text + ')');
// In the optional fourth stage, we recursively walk the new structure, passing
// each name/value pair to a reviver function for possible transformation.
return typeof reviver === 'function' ?
walk({'': j}, '') : j;
}
// If the text is not JSON parseable, then a SyntaxError is thrown.
throw new SyntaxError('JSON.parse');
};
}
}());

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@ -0,0 +1,26 @@
// Underscore.js 1.1.6
// (c) 2011 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
(function(){var p=this,C=p._,m={},i=Array.prototype,n=Object.prototype,f=i.slice,D=i.unshift,E=n.toString,l=n.hasOwnProperty,s=i.forEach,t=i.map,u=i.reduce,v=i.reduceRight,w=i.filter,x=i.every,y=i.some,o=i.indexOf,z=i.lastIndexOf;n=Array.isArray;var F=Object.keys,q=Function.prototype.bind,b=function(a){return new j(a)};typeof module!=="undefined"&&module.exports?(module.exports=b,b._=b):p._=b;b.VERSION="1.1.6";var h=b.each=b.forEach=function(a,c,d){if(a!=null)if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
0,k=a.length;e<k;e++){if(c.call(d,a[e],e,a)===m)break}else for(e in a)if(l.call(a,e)&&c.call(d,a[e],e,a)===m)break};b.map=function(a,c,b){var e=[];if(a==null)return e;if(t&&a.map===t)return a.map(c,b);h(a,function(a,g,G){e[e.length]=c.call(b,a,g,G)});return e};b.reduce=b.foldl=b.inject=function(a,c,d,e){var k=d!==void 0;a==null&&(a=[]);if(u&&a.reduce===u)return e&&(c=b.bind(c,e)),k?a.reduce(c,d):a.reduce(c);h(a,function(a,b,f){!k&&b===0?(d=a,k=!0):d=c.call(e,d,a,b,f)});if(!k)throw new TypeError("Reduce of empty array with no initial value");
return d};b.reduceRight=b.foldr=function(a,c,d,e){a==null&&(a=[]);if(v&&a.reduceRight===v)return e&&(c=b.bind(c,e)),d!==void 0?a.reduceRight(c,d):a.reduceRight(c);a=(b.isArray(a)?a.slice():b.toArray(a)).reverse();return b.reduce(a,c,d,e)};b.find=b.detect=function(a,c,b){var e;A(a,function(a,g,f){if(c.call(b,a,g,f))return e=a,!0});return e};b.filter=b.select=function(a,c,b){var e=[];if(a==null)return e;if(w&&a.filter===w)return a.filter(c,b);h(a,function(a,g,f){c.call(b,a,g,f)&&(e[e.length]=a)});return e};
b.reject=function(a,c,b){var e=[];if(a==null)return e;h(a,function(a,g,f){c.call(b,a,g,f)||(e[e.length]=a)});return e};b.every=b.all=function(a,c,b){var e=!0;if(a==null)return e;if(x&&a.every===x)return a.every(c,b);h(a,function(a,g,f){if(!(e=e&&c.call(b,a,g,f)))return m});return e};var A=b.some=b.any=function(a,c,d){c||(c=b.identity);var e=!1;if(a==null)return e;if(y&&a.some===y)return a.some(c,d);h(a,function(a,b,f){if(e=c.call(d,a,b,f))return m});return e};b.include=b.contains=function(a,c){var b=
!1;if(a==null)return b;if(o&&a.indexOf===o)return a.indexOf(c)!=-1;A(a,function(a){if(b=a===c)return!0});return b};b.invoke=function(a,c){var d=f.call(arguments,2);return b.map(a,function(a){return(c.call?c||a:a[c]).apply(a,d)})};b.pluck=function(a,c){return b.map(a,function(a){return a[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};h(a,function(a,b,f){b=c?c.call(d,a,b,f):a;b>=e.computed&&(e={value:a,computed:b})});return e.value};b.min=function(a,
c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};h(a,function(a,b,f){b=c?c.call(d,a,b,f):a;b<e.computed&&(e={value:a,computed:b})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(a,b,f){return{value:a,criteria:c.call(d,a,b,f)}}).sort(function(a,b){var c=a.criteria,d=b.criteria;return c<d?-1:c>d?1:0}),"value")};b.sortedIndex=function(a,c,d){d||(d=b.identity);for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?e=g+1:f=g}return e};b.toArray=
function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;if(b.isArguments(a))return f.call(a);return b.values(a)};b.size=function(a){return b.toArray(a).length};b.first=b.head=function(a,b,d){return b!=null&&!d?f.call(a,0,b):a[0]};b.rest=b.tail=function(a,b,d){return f.call(a,b==null||d?1:b)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.filter(a,function(a){return!!a})};b.flatten=function(a){return b.reduce(a,function(a,d){if(b.isArray(d))return a.concat(b.flatten(d));
a[a.length]=d;return a},[])};b.without=function(a){var c=f.call(arguments,1);return b.filter(a,function(a){return!b.include(c,a)})};b.uniq=b.unique=function(a,c){return b.reduce(a,function(a,e,f){if(0==f||(c===!0?b.last(a)!=e:!b.include(a,e)))a[a.length]=e;return a},[])};b.intersect=function(a){var c=f.call(arguments,1);return b.filter(b.uniq(a),function(a){return b.every(c,function(c){return b.indexOf(c,a)>=0})})};b.zip=function(){for(var a=f.call(arguments),c=b.max(b.pluck(a,"length")),d=Array(c),
e=0;e<c;e++)d[e]=b.pluck(a,""+e);return d};b.indexOf=function(a,c,d){if(a==null)return-1;var e;if(d)return d=b.sortedIndex(a,c),a[d]===c?d:-1;if(o&&a.indexOf===o)return a.indexOf(c);d=0;for(e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,b){if(a==null)return-1;if(z&&a.lastIndexOf===z)return a.lastIndexOf(b);for(var d=a.length;d--;)if(a[d]===b)return d;return-1};b.range=function(a,b,d){arguments.length<=1&&(b=a||0,a=0);d=arguments[2]||1;for(var e=Math.max(Math.ceil((b-a)/
d),0),f=0,g=Array(e);f<e;)g[f++]=a,a+=d;return g};b.bind=function(a,b){if(a.bind===q&&q)return q.apply(a,f.call(arguments,1));var d=f.call(arguments,2);return function(){return a.apply(b,d.concat(f.call(arguments)))}};b.bindAll=function(a){var c=f.call(arguments,1);c.length==0&&(c=b.functions(a));h(c,function(c){a[c]=b.bind(a[c],a)});return a};b.memoize=function(a,c){var d={};c||(c=b.identity);return function(){var b=c.apply(this,arguments);return l.call(d,b)?d[b]:d[b]=a.apply(this,arguments)}};b.delay=
function(a,b){var d=f.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},b)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(f.call(arguments,1)))};var B=function(a,b,d){var e;return function(){var f=this,g=arguments,h=function(){e=null;a.apply(f,g)};d&&clearTimeout(e);if(d||!e)e=setTimeout(h,b)}};b.throttle=function(a,b){return B(a,b,!1)};b.debounce=function(a,b){return B(a,b,!0)};b.once=function(a){var b=!1,d;return function(){if(b)return d;b=!0;return d=a.apply(this,arguments)}};
b.wrap=function(a,b){return function(){var d=[a].concat(f.call(arguments));return b.apply(this,d)}};b.compose=function(){var a=f.call(arguments);return function(){for(var b=f.call(arguments),d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};b.after=function(a,b){return function(){if(--a<1)return b.apply(this,arguments)}};b.keys=F||function(a){if(a!==Object(a))throw new TypeError("Invalid object");var b=[],d;for(d in a)l.call(a,d)&&(b[b.length]=d);return b};b.values=function(a){return b.map(a,
b.identity)};b.functions=b.methods=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){h(f.call(arguments,1),function(b){for(var d in b)b[d]!==void 0&&(a[d]=b[d])});return a};b.defaults=function(a){h(f.call(arguments,1),function(b){for(var d in b)a[d]==null&&(a[d]=b[d])});return a};b.clone=function(a){return b.isArray(a)?a.slice():b.extend({},a)};b.tap=function(a,b){b(a);return a};b.isEqual=function(a,c){if(a===c)return!0;var d=typeof a;if(d!=
typeof c)return!1;if(a==c)return!0;if(!a&&c||a&&!c)return!1;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return!1;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return!1;if(a.length&&a.length!==c.length)return!1;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return!1;
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b.isNumber=function(a){return!!(a===0||a&&a.toExponential&&a.toFixed)};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===!0||a===!1};b.isDate=function(a){return!(!a||!a.getTimezoneOffset||!a.setUTCFullYear)};b.isRegExp=function(a){return!(!a||!a.test||!a.exec||!(a.ignoreCase||a.ignoreCase===!1))};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===void 0};b.noConflict=function(){p._=C;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=
0;e<a;e++)b.call(d,e)};b.mixin=function(a){h(b.functions(a),function(c){H(c,b[c]=a[c])})};var I=0;b.uniqueId=function(a){var b=I++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};b.template=function(a,c){var d=b.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,function(a,b){return"',"+b.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||
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"splice","unshift"],function(a){var b=i[a];j.prototype[a]=function(){b.apply(this._wrapped,arguments);return r(this._wrapped,this._chain)}});h(["concat","join","slice"],function(a){var b=i[a];j.prototype[a]=function(){return r(b.apply(this._wrapped,arguments),this._chain)}});j.prototype.chain=function(){this._chain=!0;return this};j.prototype.value=function(){return this._wrapped}})();

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@ -0,0 +1,807 @@
// Underscore.js 1.1.6
// (c) 2011 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
(function() {
// Baseline setup
// --------------
// Establish the root object, `window` in the browser, or `global` on the server.
var root = this;
// Save the previous value of the `_` variable.
var previousUnderscore = root._;
// Establish the object that gets returned to break out of a loop iteration.
var breaker = {};
// Save bytes in the minified (but not gzipped) version:
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;
// All **ECMAScript 5** native function implementations that we hope to use
// are declared here.
var
nativeForEach = ArrayProto.forEach,
nativeMap = ArrayProto.map,
nativeReduce = ArrayProto.reduce,
nativeReduceRight = ArrayProto.reduceRight,
nativeFilter = ArrayProto.filter,
nativeEvery = ArrayProto.every,
nativeSome = ArrayProto.some,
nativeIndexOf = ArrayProto.indexOf,
nativeLastIndexOf = ArrayProto.lastIndexOf,
nativeIsArray = Array.isArray,
nativeKeys = Object.keys,
nativeBind = FuncProto.bind;
// Create a safe reference to the Underscore object for use below.
var _ = function(obj) { return new wrapper(obj); };
// Export the Underscore object for **CommonJS**, with backwards-compatibility
// for the old `require()` API. If we're not in CommonJS, add `_` to the
// global object.
if (typeof module !== 'undefined' && module.exports) {
module.exports = _;
_._ = _;
} else {
root._ = _;
}
// Current version.
_.VERSION = '1.1.6';
// Collection Functions
// --------------------
// The cornerstone, an `each` implementation, aka `forEach`.
// Handles objects implementing `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 (nativeForEach && obj.forEach === nativeForEach) {
obj.forEach(iterator, context);
} else if (_.isNumber(obj.length)) {
for (var i = 0, l = obj.length; i < l; i++) {
if (iterator.call(context, obj[i], i, obj) === breaker) return;
}
} else {
for (var key in obj) {
if (hasOwnProperty.call(obj, key)) {
if (iterator.call(context, obj[key], key, obj) === breaker) return;
}
}
}
};
// Return the results of applying the iterator to each element.
// Delegates to **ECMAScript 5**'s native `map` if available.
_.map = function(obj, iterator, context) {
var results = [];
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);
});
return results;
};
// **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) {
var initial = memo !== void 0;
if (obj == null) obj = [];
if (nativeReduce && obj.reduce === nativeReduce) {
if (context) iterator = _.bind(iterator, context);
return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
}
each(obj, function(value, index, list) {
if (!initial && index === 0) {
memo = value;
initial = true;
} else {
memo = iterator.call(context, memo, value, index, list);
}
});
if (!initial) throw new TypeError("Reduce of empty array with no initial value");
return memo;
};
// The right-associative version of reduce, also known as `foldr`.
// Delegates to **ECMAScript 5**'s native `reduceRight` if available.
_.reduceRight = _.foldr = function(obj, iterator, memo, context) {
if (obj == null) obj = [];
if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
if (context) iterator = _.bind(iterator, context);
return memo !== void 0 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
}
var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
return _.reduce(reversed, iterator, memo, context);
};
// Return the first value which passes a truth test. Aliased as `detect`.
_.find = _.detect = function(obj, iterator, context) {
var result;
any(obj, function(value, index, list) {
if (iterator.call(context, value, index, list)) {
result = value;
return true;
}
});
return result;
};
// 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) {
var results = [];
if (obj == null) return results;
if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
each(obj, function(value, index, list) {
if (iterator.call(context, value, index, list)) results[results.length] = 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;
};
// 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) {
var result = true;
if (obj == null) return result;
if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
each(obj, function(value, index, list) {
if (!(result = result && iterator.call(context, value, index, list))) return breaker;
});
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 result = false;
if (obj == null) return result;
if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
each(obj, function(value, index, list) {
if (result = iterator.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;
if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
any(obj, function(value) {
if (found = value === target) return true;
});
return found;
};
// Invoke a method (with arguments) on every item in a collection.
_.invoke = function(obj, method) {
var args = slice.call(arguments, 2);
return _.map(obj, function(value) {
return (method.call ? method || value : 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 the maximum element or (element-based computation).
_.max = function(obj, iterator, context) {
if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
var result = {computed : -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});
});
return result.value;
};
// Return the minimum element (or element-based computation).
_.min = function(obj, iterator, context) {
if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
var result = {computed : 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});
});
return result.value;
};
// Sort the object's values by a criterion produced by an iterator.
_.sortBy = function(obj, iterator, context) {
return _.pluck(_.map(obj, function(value, index, list) {
return {
value : value,
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;
}), 'value');
};
// 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);
var low = 0, high = array.length;
while (low < high) {
var mid = (low + high) >> 1;
iterator(array[mid]) < iterator(obj) ? 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 iterable;
if (_.isArguments(iterable)) return slice.call(iterable);
return _.values(iterable);
};
// Return the number of elements in an object.
_.size = function(obj) {
return _.toArray(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];
};
// 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**
// check allows it to work with `_.map`.
_.rest = _.tail = function(array, index, guard) {
return slice.call(array, (index == null) || guard ? 1 : index);
};
// Get the last element of an array.
_.last = function(array) {
return array[array.length - 1];
};
// Trim out all falsy values from an array.
_.compact = function(array) {
return _.filter(array, function(value){ return !!value; });
};
// Return a completely flattened version of an array.
_.flatten = function(array) {
return _.reduce(array, function(memo, value) {
if (_.isArray(value)) return memo.concat(_.flatten(value));
memo[memo.length] = value;
return memo;
}, []);
};
// Return a version of the array that does not contain the specified value(s).
_.without = function(array) {
var values = slice.call(arguments, 1);
return _.filter(array, function(value){ return !_.include(values, value); });
};
// 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) {
return _.reduce(array, function(memo, el, i) {
if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo[memo.length] = el;
return memo;
}, []);
};
// Produce an array that contains every item shared between all the
// passed-in arrays.
_.intersect = function(array) {
var rest = slice.call(arguments, 1);
return _.filter(_.uniq(array), function(item) {
return _.every(rest, function(other) {
return _.indexOf(other, item) >= 0;
});
});
};
// 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 results = new Array(length);
for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
return results;
};
// 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.
// Delegates to **ECMAScript 5**'s native `indexOf` if available.
// If the array is large and already in sort order, pass `true`
// for **isSorted** to use binary search.
_.indexOf = function(array, item, isSorted) {
if (array == null) return -1;
var i, l;
if (isSorted) {
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 (array[i] === item) return i;
return -1;
};
// Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
_.lastIndexOf = function(array, item) {
if (array == null) return -1;
if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
var i = array.length;
while (i--) if (array[i] === item) return i;
return -1;
};
// Generate an integer Array containing an arithmetic progression. A port of
// the native Python `range()` function. See
// [the Python documentation](http://docs.python.org/library/functions.html#range).
_.range = function(start, stop, step) {
if (arguments.length <= 1) {
stop = start || 0;
start = 0;
}
step = arguments[2] || 1;
var len = Math.max(Math.ceil((stop - start) / step), 0);
var idx = 0;
var range = new Array(len);
while(idx < len) {
range[idx++] = start;
start += step;
}
return range;
};
// Function (ahem) Functions
// ------------------
// 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(func, obj) {
if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
var args = slice.call(arguments, 2);
return function() {
return func.apply(obj, args.concat(slice.call(arguments)));
};
};
// Bind all of an object's methods to that object. 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);
each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
return obj;
};
// Memoize an expensive function by storing its results.
_.memoize = function(func, hasher) {
var memo = {};
hasher || (hasher = _.identity);
return function() {
var key = hasher.apply(this, arguments);
return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
};
};
// Delays a function for the given number of milliseconds, and then calls
// it with the arguments supplied.
_.delay = function(func, wait) {
var args = slice.call(arguments, 2);
return setTimeout(function(){ return func.apply(func, args); }, wait);
};
// Defers a function, scheduling it to run after the current call stack has
// cleared.
_.defer = function(func) {
return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
};
// Internal function used to implement `_.throttle` and `_.debounce`.
var limit = function(func, wait, debounce) {
var timeout;
return function() {
var context = this, args = arguments;
var throttler = function() {
timeout = null;
func.apply(context, args);
};
if (debounce) clearTimeout(timeout);
if (debounce || !timeout) timeout = setTimeout(throttler, wait);
};
};
// Returns a function, that, when invoked, will only be triggered at most once
// during a given window of time.
_.throttle = function(func, wait) {
return limit(func, wait, false);
};
// 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) {
return limit(func, wait, true);
};
// Returns a function that will be executed at most one time, no matter how
// often you call it. Useful for lazy initialization.
_.once = function(func) {
var ran = false, memo;
return function() {
if (ran) return memo;
ran = true;
return memo = func.apply(this, arguments);
};
};
// Returns the first function passed as an argument to the second,
// 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));
return wrapper.apply(this, args);
};
};
// Returns a function that is the composition of a list of functions, each
// consuming the return value of the function that follows.
_.compose = function() {
var funcs = slice.call(arguments);
return function() {
var args = slice.call(arguments);
for (var i=funcs.length-1; i >= 0; i--) {
args = [funcs[i].apply(this, args)];
}
return args[0];
};
};
// Returns a function that will only be executed after being called N times.
_.after = function(times, func) {
return function() {
if (--times < 1) { return func.apply(this, arguments); }
};
};
// Object Functions
// ----------------
// 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');
var keys = [];
for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
return keys;
};
// Retrieve the values of an object's properties.
_.values = function(obj) {
return _.map(obj, _.identity);
};
// Return a sorted list of the function names available on the object.
// Aliased as `methods`
_.functions = _.methods = function(obj) {
return _.filter(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
};
// 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) {
if (source[prop] !== void 0) obj[prop] = source[prop];
}
});
return obj;
};
// 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];
}
});
return obj;
};
// Create a (shallow-cloned) duplicate of an object.
_.clone = function(obj) {
return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
};
// Invokes interceptor with the obj, and then returns obj.
// The primary purpose of this method is to "tap into" a method chain, in
// order to perform operations on intermediate results within the chain.
_.tap = function(obj, interceptor) {
interceptor(obj);
return obj;
};
// Perform a deep comparison to check if two objects are equal.
_.isEqual = function(a, b) {
// Check object identity.
if (a === b) return true;
// Different types?
var atype = typeof(a), btype = typeof(b);
if (atype != btype) return false;
// Basic equality test (watch out for coercions).
if (a == b) return true;
// One is falsy and the other truthy.
if ((!a && b) || (a && !b)) return false;
// Unwrap any wrapped objects.
if (a._chain) a = a._wrapped;
if (b._chain) b = b._wrapped;
// One of them implements an isEqual()?
if (a.isEqual) return a.isEqual(b);
// Check dates' integer values.
if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
// Both are NaN?
if (_.isNaN(a) && _.isNaN(b)) return false;
// Compare regular expressions.
if (_.isRegExp(a) && _.isRegExp(b))
return a.source === b.source &&
a.global === b.global &&
a.ignoreCase === b.ignoreCase &&
a.multiline === b.multiline;
// If a is not an object by this point, we can't handle it.
if (atype !== 'object') return false;
// Check for different array lengths before comparing contents.
if (a.length && (a.length !== b.length)) return false;
// Nothing else worked, deep compare the contents.
var aKeys = _.keys(a), bKeys = _.keys(b);
// Different object sizes?
if (aKeys.length != bKeys.length) return false;
// Recursive comparison of contents.
for (var key in a) if (!(key in b) || !_.isEqual(a[key], b[key])) return false;
return true;
};
// Is a given array or object empty?
_.isEmpty = function(obj) {
if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
return true;
};
// Is a given value a DOM element?
_.isElement = function(obj) {
return !!(obj && obj.nodeType == 1);
};
// Is a given value an array?
// Delegates to ECMA5's native Array.isArray
_.isArray = nativeIsArray || function(obj) {
return toString.call(obj) === '[object Array]';
};
// Is a given variable an arguments object?
_.isArguments = function(obj) {
return !!(obj && hasOwnProperty.call(obj, 'callee'));
};
// Is a given value a function?
_.isFunction = function(obj) {
return !!(obj && obj.constructor && obj.call && obj.apply);
};
// Is a given value a string?
_.isString = function(obj) {
return !!(obj === '' || (obj && obj.charCodeAt && obj.substr));
};
// Is a given value a number?
_.isNumber = function(obj) {
return !!(obj === 0 || (obj && obj.toExponential && obj.toFixed));
};
// Is the given value `NaN`? `NaN` happens to be the only value in JavaScript
// that does not equal itself.
_.isNaN = function(obj) {
return obj !== obj;
};
// Is a given value a boolean?
_.isBoolean = function(obj) {
return obj === true || obj === false;
};
// Is a given value a date?
_.isDate = function(obj) {
return !!(obj && obj.getTimezoneOffset && obj.setUTCFullYear);
};
// Is the given value a regular expression?
_.isRegExp = function(obj) {
return !!(obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false));
};
// Is a given value equal to null?
_.isNull = function(obj) {
return obj === null;
};
// Is a given variable undefined?
_.isUndefined = function(obj) {
return obj === void 0;
};
// Utility Functions
// -----------------
// Run Underscore.js in *noConflict* mode, returning the `_` variable to its
// previous owner. Returns a reference to the Underscore object.
_.noConflict = function() {
root._ = previousUnderscore;
return this;
};
// Keep the identity function around for default iterators.
_.identity = function(value) {
return value;
};
// Run a function **n** times.
_.times = function (n, iterator, context) {
for (var i = 0; i < n; i++) iterator.call(context, i);
};
// Add your own custom functions to the Underscore object, ensuring that
// they're correctly added to the OOP wrapper as well.
_.mixin = function(obj) {
each(_.functions(obj), function(name){
addToWrapper(name, _[name] = obj[name]);
});
};
// Generate a unique integer id (unique within the entire client session).
// Useful for temporary DOM ids.
var idCounter = 0;
_.uniqueId = function(prefix) {
var id = idCounter++;
return prefix ? prefix + id : id;
};
// By default, Underscore uses ERB-style template delimiters, change the
// following template settings to use alternative delimiters.
_.templateSettings = {
evaluate : /<%([\s\S]+?)%>/g,
interpolate : /<%=([\s\S]+?)%>/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.interpolate, function(match, code) {
return "'," + code.replace(/\\'/g, "'") + ",'";
})
.replace(c.evaluate || null, function(match, code) {
return "');" + code.replace(/\\'/g, "'")
.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);
return data ? func(data) : func;
};
// The OOP Wrapper
// ---------------
// 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);
};
};
// Add all of the Underscore functions to the wrapper object.
_.mixin(_);
// 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() {
method.apply(this._wrapped, arguments);
return result(this._wrapped, this._chain);
};
});
// 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);
};
});
// Start chaining a wrapped Underscore object.
wrapper.prototype.chain = function() {
this._chain = true;
return this;
};
// Extracts the result from a wrapped and chained object.
wrapper.prototype.value = function() {
return this._wrapped;
};
})();