oxjs/source/Ox/js/Polyfill.js

430 lines
14 KiB
JavaScript

'use strict';
(function(window) {
var canDefineProperty = !!Object.defineProperty && (function() {
try {
Object.defineProperty({}, 'a', {});
return true;
} catch (e) {} // IE 8
}()),
chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/',
log;
Ox.polyfill = {};
/*@
Ox.polyfill.atob <f> see https://developer.mozilla.org/en/DOM/window.atob
> Ox.polyfill.atob('Cg==')
'\n'
> Ox.polyfill.atob('Zm9v')
'foo'
@*/
Ox.polyfill.atob = function(string) {
var binary = '', ret = '';
String(string).replace(/=/g, '').split('').forEach(function(char) {
binary += Ox.pad(chars.indexOf(char).toString(2), 'left', 6, '0');
});
while (binary.length >= 8) {
ret += Ox.char(parseInt(binary.slice(0, 8), 2));
binary = binary.slice(8);
}
return ret;
};
/*@
Ox.polyfill.btoa <f> see https://developer.mozilla.org/en/DOM/window.btoa
> Ox.polyfill.btoa('\n')
'Cg=='
> Ox.polyfill.btoa('foo')
'Zm9v'
@*/
Ox.polyfill.btoa = function(string) {
var binary = '', ret = '';
String(string).split('').forEach(function(char) {
binary += Ox.pad(char.charCodeAt(0).toString(2), 'left', 8, '0');
});
binary = Ox.pad(binary, Math.ceil(binary.length / 6) * 6, '0')
while (binary) {
ret += chars[parseInt(binary.slice(0, 6), 2)];
binary = binary.slice(6);
}
return Ox.pad(ret, Math.ceil(ret.length / 4) * 4, '=');
};
/*@
Ox.polyfill.bind <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/bind
<script>
Ox.test.object = {
get: function() {
return this.value;
},
value: 'foo'
};
Ox.test.get = Ox.test.object.get;
Ox.test.value = 'bar';
</script>
> Ox.test.object.get()
'foo'
> Ox.test.get()
'bar'
> Ox.polyfill.bind.call(Ox.test.get, Ox.test.object)()
'foo'
@*/
Ox.polyfill.bind = function(that) {
if (typeof this !== 'function') {
throw new TypeError();
}
var args = Array.prototype.slice.call(arguments, 1),
fn = function() {},
this_ = this,
ret = function() {
return this_.apply(
this instanceof fn ? this : that || window,
args.concat(Array.prototype.slice.call(arguments))
);
};
fn.prototype = this.prototype;
ret.prototype = new fn();
return ret;
};
/*@
Ox.polyfill.every <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/every
> Ox.polyfill.every.call([0, 1, 2], function(v, i) { return v == i; })
true
> Ox.polyfill.every.call([true, true, false], Ox.identity)
false
@*/
Ox.polyfill.every = function(iterator, that) {
if (this === void 0 || this === null || typeof iterator !== 'function') {
throw new TypeError();
}
var array = Object(this), i, length = array.length >>> 0, ret = true;
for (i = 0; i < length; i++) {
if (i in array && !iterator.call(that, array[i], i, array)) {
ret = false;
break;
}
}
return ret;
};
/*@
Ox.polyfill.filter <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/filter
> Ox.polyfill.filter.call([2, 1, 0], function(v, i) { return v == i; })
[1]
@*/
Ox.polyfill.filter = function(iterator, that) {
if (this === void 0 || this === null || typeof iterator !== 'function') {
throw new TypeError();
}
var array = Object(this), i, length = array.length >>> 0, ret = [], value;
for (i = 0; i < length; i++) {
// save value in case iterator mutates it
if (i in array && iterator.call(that, value = array[i], i, array)) {
ret.push(value);
}
}
return ret;
};
/*@
Ox.polyfill.forEach <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/forEach
<script>
Ox.test.array = [];
Ox.polyfill.forEach.call([1, 2, 3], function(v, i) { Ox.test.array.push([v, i])})
</script>
> Ox.test.array
[[1, 0], [2, 1], [3, 2]]
@*/
Ox.polyfill.forEach = function(iterator, that) {
if (this === void 0 || this === null || typeof iterator !== 'function') {
throw new TypeError();
}
var array = Object(this), i, length = array.length >>> 0;
for (i = 0; i < length; i++) {
if (i in array) {
iterator.call(that, array[i], i, array);
}
}
};
/*@
Ox.polyfill.indexOf <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
> Ox.polyfill.indexOf.call([1, 2, 3, 2, 1], 2)
1
> Ox.polyfill.indexOf.call([1, 2, 3, 2, 1], 4)
-1
@*/
Ox.polyfill.indexOf = function(value) {
if (this === void 0 || this === null) {
throw new TypeError();
}
var array = Object(this), i, length = array.length >>> 0, ret = -1;
for (i = 0; i < length; i++) {
if (i in array && array[i] === value) {
ret = i;
break;
}
}
return ret;
};
/*@
Ox.polyfill.isArray <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
> Ox.polyfill.isArray([])
true
> Ox.polyfill.isArray((function() { return arguments; }()))
false
> Ox.polyfill.isArray({0: 0, length: 1})
false
@*/
Ox.polyfill.isArray = function(value) {
return Object.prototype.toString.call(value) == '[object Array]';
};
/*@
Ox.polyfill.JSON <o> see https://github.com/douglascrockford/JSON-js
> Ox.polyfill.JSON.parse('{"a": [1, 2], "b": [3, 4]}')
{a: [1, 2], b: [3, 4]}
> Ox.polyfill.JSON.stringify([(function(){ return arguments; }()), false, null, 0, -0, Infinity, NaN, / /, void 0])
'[{},false,null,0,0,null,null,{},null]'
> Ox.polyfill.JSON.stringify(new Date()).length
24
@*/
Ox.polyfill.JSON = (function() {
var replace = {
'"': '\\"',
'\b': '\\b',
'\f': '\\f',
'\n': '\\n',
'\r': '\\r',
'\t': '\\t',
'\\': '\\\\'
};
function quote(value) {
return '"' + value.split('').map(function(char) {
return replace[char] || char;
}).join('') + '"';
};
return {
parse: function parse(string) {
return eval('(' + string + ')');
},
stringify: function stringify(value) {
var ret = 'null', type = Ox.typeOf(value);
if (type == 'arguments' || type == 'regexp') {
ret = '{}';
} else if (type == 'array') {
ret = ['[', ']'].join(
value.map(function(v) {
return stringify(v);
}).join(',')
);
} else if (type == 'boolean') {
ret = String(value);
} else if (type == 'date') {
ret = Ox.splice(
Ox.getISODate(value, true), 19, 0,
'.' + String(+value).slice(-3)
);
} else if (type == 'number') {
ret = isFinite(value) ? String(value) : 'null';
} else if (type == 'object') {
ret = ['{', '}'].join(
Object.keys(value).map(function(k) {
return quote(k) + ': ' + stringify(value[k]);
}).join(',')
);
} else if (type == 'string') {
ret = quote(value);
}
return ret;
}
};
}());
/*@
Ox.polyfill.keys <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Object/keys
> Ox.polyfill.keys({a: 1, b: 2, c: 3})
['a', 'b', 'c']
@*/
Ox.polyfill.keys = function(object) {
if (object !== Object(object)) {
throw new TypeError();
}
var key, ret = [];
for (key in object) {
Object.prototype.hasOwnProperty.call(object, key) && ret.push(key);
}
return ret;
};
/*@
Ox.polyfill.lastIndexOf <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/lastIndexOf
> Ox.polyfill.lastIndexOf.call([1, 2, 3, 2, 1], 2)
3
> Ox.polyfill.lastIndexOf.call([1, 2, 3, 2, 1], 4)
-1
@*/
Ox.polyfill.lastIndexOf = function(value) {
if (this === void 0 || this === null) {
throw new TypeError();
}
var array = Object(this), i, length = array.length >>> 0, ret = -1;
for (i = length - 1; i >= 0; i--) {
if (i in array && array[i] === value) {
ret = i;
break;
}
}
return ret;
};
/*@
Ox.polyfill.map <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/map
> Ox.polyfill.map.call([2, 1, 0], function(v, i) { return v == i; })
[false, true, false]
@*/
Ox.polyfill.map = function(iterator, that) {
if (this === void 0 || this === null || typeof iterator !== 'function') {
throw new TypeError();
}
var array = Object(this), i, length = array.length >>> 0,
ret = new Array(length);
for (i = 0; i < length; i++) {
if (i in array) {
ret[i] = iterator.call(that, array[i], i, array);
}
}
return ret;
};
/*@
Ox.polyfill.reduce <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/reduce
> Ox.polyfill.reduce.call([1, 2, 3], function(p, c, i) { return p + c + i; }, 1)
10
@*/
Ox.polyfill.reduce = function(iterator, ret) {
if (this === void 0 || this === null || typeof iterator !== 'function') {
throw new TypeError();
}
var array = Object(this), i, length = array.length;
if (!length && ret === void 0) {
throw new TypeError();
}
if (ret === void 0) {
ret = array[0];
i = 1;
}
for (i = i || 0; i < length; i++) {
if (i in array) {
ret = iterator.call(void 0, ret, array[i], i, array);
}
}
return ret;
};
/*@
Ox.polyfill.reduceRight <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/reduceRight
> Ox.polyfill.reduceRight.call([1, 2, 3], function(p, c, i) { return p + c + i; }, 1)
10
@*/
Ox.polyfill.reduceRight = function(iterator, ret) {
if (this === void 0 || this === null || typeof iterator !== 'function') {
throw new TypeError();
}
var array = Object(this), i, length = array.length;
if (!length && ret === void 0) {
throw new TypeError();
}
if (ret === void 0) {
ret = array[length - 1];
i = length - 2;
}
for (i = i || length - 1; i >= 0; i--) {
if (i in array) {
ret = iterator.call(void 0, ret, array[i], i, array);
}
}
return ret;
};
/*@
Ox.polyfill.some <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some
> Ox.polyfill.some.call([2, 1, 0], function(v, i) { return v == i; })
true
> Ox.polyfill.some.call([false, false, false], Ox.identity)
false
@*/
Ox.polyfill.some = function(iterator, that) {
if (this === void 0 || this === null || typeof iterator !== 'function') {
throw new TypeError();
}
var array = Object(this), i, length = array.length >>> 0, ret = false;
for (i = 0; i < length; i++) {
if (i in array && iterator.call(that, array[i], i, array)) {
ret = true;
break;
}
}
return ret;
};
/*@
Ox.polyfill.trim <f> see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String/Trim
> Ox.polyfill.trim.call(' foo ')
'foo'
@*/
Ox.polyfill.trim = function() {
if (this === void 0 || this === null) {
throw new TypeError();
}
return this.replace(/^\s+|\s+$/g, '');
};
[
[Array, ['isArray']],
[Array.prototype, [
'every', 'filter', 'forEach', 'indexOf', 'lastIndexOf',
'map', 'reduce', 'reduceRight', 'some']
],
[Function.prototype, ['bind']],
[Object, ['keys']],
[String.prototype, ['trim']],
[window, ['atob', 'btoa', 'JSON']]
].forEach(function(item) {
var object = item[0], keys = item[1];
keys.forEach(function(key) {
if (!key in object) {
if (canDefineProperty) {
Object.defineProperty(object, key, {
configurable: true,
enumerable: false,
writable: true,
value: Ox.polyfill[key]
});
} else {
object[key] = Ox.polyfill[key];
}
}
});
});
// In IE8, window.console.log is an object,
// in IE9, window.console.log.apply is undefined
// see http://stackoverflow.com/questions/5472938/does-ie9-support-console-log-and-is-it-a-real-function
if (window.console) {
if (typeof window.console.log !== 'function') {
log = window.console.log;
window.console.log = function() {
log(Array.prototype.slice.call(arguments).join(' '));
};
} else if (!window.console.log.apply) {
window.console.log = Function.prototype.bind.call(
window.console.log, window.console
);
}
}
})(this);