pax_global_header 0000666 0000000 0000000 00000000064 12327742260 0014517 g ustar 00root root 0000000 0000000 52 comment=0eb4fea8dea392258717205535b634cc715207f8
async-0.8.0/ 0000775 0000000 0000000 00000000000 12327742260 0012641 5 ustar 00root root 0000000 0000000 async-0.8.0/.gitignore 0000664 0000000 0000000 00000000024 12327742260 0014625 0 ustar 00root root 0000000 0000000 /node_modules
/dist
async-0.8.0/.gitmodules 0000664 0000000 0000000 00000000433 12327742260 0015016 0 ustar 00root root 0000000 0000000 [submodule "deps/nodeunit"]
path = deps/nodeunit
url = git://github.com/caolan/nodeunit.git
[submodule "deps/UglifyJS"]
path = deps/UglifyJS
url = https://github.com/mishoo/UglifyJS.git
[submodule "deps/nodelint"]
path = deps/nodelint
url = https://github.com/tav/nodelint.git
async-0.8.0/.npmignore 0000664 0000000 0000000 00000000074 12327742260 0014641 0 ustar 00root root 0000000 0000000 deps
dist
test
nodelint.cfg
.npmignore
.gitmodules
Makefile
async-0.8.0/.travis.yml 0000664 0000000 0000000 00000000046 12327742260 0014752 0 ustar 00root root 0000000 0000000 language: node_js
node_js:
- "0.10"
async-0.8.0/LICENSE 0000664 0000000 0000000 00000002047 12327742260 0013651 0 ustar 00root root 0000000 0000000 Copyright (c) 2010-2014 Caolan McMahon
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
async-0.8.0/Makefile 0000664 0000000 0000000 00000001036 12327742260 0014301 0 ustar 00root root 0000000 0000000 PACKAGE = asyncjs
NODEJS = $(if $(shell test -f /usr/bin/nodejs && echo "true"),nodejs,node)
CWD := $(shell pwd)
NODEUNIT = $(CWD)/node_modules/nodeunit/bin/nodeunit
UGLIFY = $(CWD)/node_modules/uglify-js/bin/uglifyjs
NODELINT = $(CWD)/node_modules/nodelint/nodelint
BUILDDIR = dist
all: clean test build
build: $(wildcard lib/*.js)
mkdir -p $(BUILDDIR)
$(UGLIFY) lib/async.js > $(BUILDDIR)/async.min.js
test:
$(NODEUNIT) test
clean:
rm -rf $(BUILDDIR)
lint:
$(NODELINT) --config nodelint.cfg lib/async.js
.PHONY: test build all
async-0.8.0/README.md 0000664 0000000 0000000 00000144157 12327742260 0014134 0 ustar 00root root 0000000 0000000 # Async.js
[](https://travis-ci.org/caolan/async)
Async is a utility module which provides straight-forward, powerful functions
for working with asynchronous JavaScript. Although originally designed for
use with [Node.js](http://nodejs.org), it can also be used directly in the
browser. Also supports [component](https://github.com/component/component).
Async provides around 20 functions that include the usual 'functional'
suspects (`map`, `reduce`, `filter`, `each`…) as well as some common patterns
for asynchronous control flow (`parallel`, `series`, `waterfall`…). All these
functions assume you follow the Node.js convention of providing a single
callback as the last argument of your `async` function.
## Quick Examples
```javascript
async.map(['file1','file2','file3'], fs.stat, function(err, results){
// results is now an array of stats for each file
});
async.filter(['file1','file2','file3'], fs.exists, function(results){
// results now equals an array of the existing files
});
async.parallel([
function(){ ... },
function(){ ... }
], callback);
async.series([
function(){ ... },
function(){ ... }
]);
```
There are many more functions available so take a look at the docs below for a
full list. This module aims to be comprehensive, so if you feel anything is
missing please create a GitHub issue for it.
## Common Pitfalls
### Binding a context to an iterator
This section is really about `bind`, not about `async`. If you are wondering how to
make `async` execute your iterators in a given context, or are confused as to why
a method of another library isn't working as an iterator, study this example:
```js
// Here is a simple object with an (unnecessarily roundabout) squaring method
var AsyncSquaringLibrary = {
squareExponent: 2,
square: function(number, callback){
var result = Math.pow(number, this.squareExponent);
setTimeout(function(){
callback(null, result);
}, 200);
}
};
async.map([1, 2, 3], AsyncSquaringLibrary.square, function(err, result){
// result is [NaN, NaN, NaN]
// This fails because the `this.squareExponent` expression in the square
// function is not evaluated in the context of AsyncSquaringLibrary, and is
// therefore undefined.
});
async.map([1, 2, 3], AsyncSquaringLibrary.square.bind(AsyncSquaringLibrary), function(err, result){
// result is [1, 4, 9]
// With the help of bind we can attach a context to the iterator before
// passing it to async. Now the square function will be executed in its
// 'home' AsyncSquaringLibrary context and the value of `this.squareExponent`
// will be as expected.
});
```
## Download
The source is available for download from
[GitHub](http://github.com/caolan/async).
Alternatively, you can install using Node Package Manager (`npm`):
npm install async
__Development:__ [async.js](https://github.com/caolan/async/raw/master/lib/async.js) - 29.6kb Uncompressed
## In the Browser
So far it's been tested in IE6, IE7, IE8, FF3.6 and Chrome 5.
Usage:
```html
```
## Documentation
### Collections
* [`each`](#each)
* [`eachSeries`](#eachSeries)
* [`eachLimit`](#eachLimit)
* [`map`](#map)
* [`mapSeries`](#mapSeries)
* [`mapLimit`](#mapLimit)
* [`filter`](#filter)
* [`filterSeries`](#filterSeries)
* [`reject`](#reject)
* [`rejectSeries`](#rejectSeries)
* [`reduce`](#reduce)
* [`reduceRight`](#reduceRight)
* [`detect`](#detect)
* [`detectSeries`](#detectSeries)
* [`sortBy`](#sortBy)
* [`some`](#some)
* [`every`](#every)
* [`concat`](#concat)
* [`concatSeries`](#concatSeries)
### Control Flow
* [`series`](#seriestasks-callback)
* [`parallel`](#parallel)
* [`parallelLimit`](#parallellimittasks-limit-callback)
* [`whilst`](#whilst)
* [`doWhilst`](#doWhilst)
* [`until`](#until)
* [`doUntil`](#doUntil)
* [`forever`](#forever)
* [`waterfall`](#waterfall)
* [`compose`](#compose)
* [`seq`](#seq)
* [`applyEach`](#applyEach)
* [`applyEachSeries`](#applyEachSeries)
* [`queue`](#queue)
* [`cargo`](#cargo)
* [`auto`](#auto)
* [`retry`](#retry)
* [`iterator`](#iterator)
* [`apply`](#apply)
* [`nextTick`](#nextTick)
* [`times`](#times)
* [`timesSeries`](#timesSeries)
### Utils
* [`memoize`](#memoize)
* [`unmemoize`](#unmemoize)
* [`log`](#log)
* [`dir`](#dir)
* [`noConflict`](#noConflict)
## Collections
### each(arr, iterator, callback)
Applies the function `iterator` to each item in `arr`, in parallel.
The `iterator` is called with an item from the list, and a callback for when it
has finished. If the `iterator` passes an error to its `callback`, the main
`callback` (for the `each` function) is immediately called with the error.
Note, that since this function applies `iterator` to each item in parallel,
there is no guarantee that the iterator functions will complete in order.
__Arguments__
* `arr` - An array to iterate over.
* `iterator(item, callback)` - A function to apply to each item in `arr`.
The iterator is passed a `callback(err)` which must be called once it has
completed. If no error has occured, the `callback` should be run without
arguments or with an explicit `null` argument.
* `callback(err)` - A callback which is called when all `iterator` functions
have finished, or an error occurs.
__Examples__
```js
// assuming openFiles is an array of file names and saveFile is a function
// to save the modified contents of that file:
async.each(openFiles, saveFile, function(err){
// if any of the saves produced an error, err would equal that error
});
```
```js
// assuming openFiles is an array of file names
async.each(openFiles, function( file, callback) {
// Perform operation on file here.
console.log('Processing file ' + file);
if( file.length > 32 ) {
console.log('This file name is too long');
callback('File name too long');
} else {
// Do work to process file here
console.log('File processed');
callback();
}
}, function(err){
// if any of the file processing produced an error, err would equal that error
if( err ) {
// One of the iterations produced an error.
// All processing will now stop.
console.log('A file failed to process');
} else {
console.log('All files have been processed successfully');
}
});
```
---------------------------------------
### eachSeries(arr, iterator, callback)
The same as [`each`](#each), only `iterator` is applied to each item in `arr` in
series. The next `iterator` is only called once the current one has completed.
This means the `iterator` functions will complete in order.
---------------------------------------
### eachLimit(arr, limit, iterator, callback)
The same as [`each`](#each), only no more than `limit` `iterator`s will be simultaneously
running at any time.
Note that the items in `arr` are not processed in batches, so there is no guarantee that
the first `limit` `iterator` functions will complete before any others are started.
__Arguments__
* `arr` - An array to iterate over.
* `limit` - The maximum number of `iterator`s to run at any time.
* `iterator(item, callback)` - A function to apply to each item in `arr`.
The iterator is passed a `callback(err)` which must be called once it has
completed. If no error has occured, the callback should be run without
arguments or with an explicit `null` argument.
* `callback(err)` - A callback which is called when all `iterator` functions
have finished, or an error occurs.
__Example__
```js
// Assume documents is an array of JSON objects and requestApi is a
// function that interacts with a rate-limited REST api.
async.eachLimit(documents, 20, requestApi, function(err){
// if any of the saves produced an error, err would equal that error
});
```
---------------------------------------
### map(arr, iterator, callback)
Produces a new array of values by mapping each value in `arr` through
the `iterator` function. The `iterator` is called with an item from `arr` and a
callback for when it has finished processing. Each of these callback takes 2 arguments:
an `error`, and the transformed item from `arr`. If `iterator` passes an error to this
callback, the main `callback` (for the `map` function) is immediately called with the error.
Note, that since this function applies the `iterator` to each item in parallel,
there is no guarantee that the `iterator` functions will complete in order.
However, the results array will be in the same order as the original `arr`.
__Arguments__
* `arr` - An array to iterate over.
* `iterator(item, callback)` - A function to apply to each item in `arr`.
The iterator is passed a `callback(err, transformed)` which must be called once
it has completed with an error (which can be `null`) and a transformed item.
* `callback(err, results)` - A callback which is called when all `iterator`
functions have finished, or an error occurs. Results is an array of the
transformed items from the `arr`.
__Example__
```js
async.map(['file1','file2','file3'], fs.stat, function(err, results){
// results is now an array of stats for each file
});
```
---------------------------------------
### mapSeries(arr, iterator, callback)
The same as [`map`](#map), only the `iterator` is applied to each item in `arr` in
series. The next `iterator` is only called once the current one has completed.
The results array will be in the same order as the original.
---------------------------------------
### mapLimit(arr, limit, iterator, callback)
The same as [`map`](#map), only no more than `limit` `iterator`s will be simultaneously
running at any time.
Note that the items are not processed in batches, so there is no guarantee that
the first `limit` `iterator` functions will complete before any others are started.
__Arguments__
* `arr` - An array to iterate over.
* `limit` - The maximum number of `iterator`s to run at any time.
* `iterator(item, callback)` - A function to apply to each item in `arr`.
The iterator is passed a `callback(err, transformed)` which must be called once
it has completed with an error (which can be `null`) and a transformed item.
* `callback(err, results)` - A callback which is called when all `iterator`
calls have finished, or an error occurs. The result is an array of the
transformed items from the original `arr`.
__Example__
```js
async.mapLimit(['file1','file2','file3'], 1, fs.stat, function(err, results){
// results is now an array of stats for each file
});
```
---------------------------------------
### filter(arr, iterator, callback)
__Alias:__ `select`
Returns a new array of all the values in `arr` which pass an async truth test.
_The callback for each `iterator` call only accepts a single argument of `true` or
`false`; it does not accept an error argument first!_ This is in-line with the
way node libraries work with truth tests like `fs.exists`. This operation is
performed in parallel, but the results array will be in the same order as the
original.
__Arguments__
* `arr` - An array to iterate over.
* `iterator(item, callback)` - A truth test to apply to each item in `arr`.
The `iterator` is passed a `callback(truthValue)`, which must be called with a
boolean argument once it has completed.
* `callback(results)` - A callback which is called after all the `iterator`
functions have finished.
__Example__
```js
async.filter(['file1','file2','file3'], fs.exists, function(results){
// results now equals an array of the existing files
});
```
---------------------------------------
### filterSeries(arr, iterator, callback)
__Alias:__ `selectSeries`
The same as [`filter`](#filter) only the `iterator` is applied to each item in `arr` in
series. The next `iterator` is only called once the current one has completed.
The results array will be in the same order as the original.
---------------------------------------
### reject(arr, iterator, callback)
The opposite of [`filter`](#filter). Removes values that pass an `async` truth test.
---------------------------------------
### rejectSeries(arr, iterator, callback)
The same as [`reject`](#reject), only the `iterator` is applied to each item in `arr`
in series.
---------------------------------------
### reduce(arr, memo, iterator, callback)
__Aliases:__ `inject`, `foldl`
Reduces `arr` into a single value using an async `iterator` to return
each successive step. `memo` is the initial state of the reduction.
This function only operates in series.
For performance reasons, it may make sense to split a call to this function into
a parallel map, and then use the normal `Array.prototype.reduce` on the results.
This function is for situations where each step in the reduction needs to be async;
if you can get the data before reducing it, then it's probably a good idea to do so.
__Arguments__
* `arr` - An array to iterate over.
* `memo` - The initial state of the reduction.
* `iterator(memo, item, callback)` - A function applied to each item in the
array to produce the next step in the reduction. The `iterator` is passed a
`callback(err, reduction)` which accepts an optional error as its first
argument, and the state of the reduction as the second. If an error is
passed to the callback, the reduction is stopped and the main `callback` is
immediately called with the error.
* `callback(err, result)` - A callback which is called after all the `iterator`
functions have finished. Result is the reduced value.
__Example__
```js
async.reduce([1,2,3], 0, function(memo, item, callback){
// pointless async:
process.nextTick(function(){
callback(null, memo + item)
});
}, function(err, result){
// result is now equal to the last value of memo, which is 6
});
```
---------------------------------------
### reduceRight(arr, memo, iterator, callback)
__Alias:__ `foldr`
Same as [`reduce`](#reduce), only operates on `arr` in reverse order.
---------------------------------------
### detect(arr, iterator, callback)
Returns the first value in `arr` that passes an async truth test. The
`iterator` is applied in parallel, meaning the first iterator to return `true` will
fire the detect `callback` with that result. That means the result might not be
the first item in the original `arr` (in terms of order) that passes the test.
If order within the original `arr` is important, then look at [`detectSeries`](#detectSeries).
__Arguments__
* `arr` - An array to iterate over.
* `iterator(item, callback)` - A truth test to apply to each item in `arr`.
The iterator is passed a `callback(truthValue)` which must be called with a
boolean argument once it has completed.
* `callback(result)` - A callback which is called as soon as any iterator returns
`true`, or after all the `iterator` functions have finished. Result will be
the first item in the array that passes the truth test (iterator) or the
value `undefined` if none passed.
__Example__
```js
async.detect(['file1','file2','file3'], fs.exists, function(result){
// result now equals the first file in the list that exists
});
```
---------------------------------------
### detectSeries(arr, iterator, callback)
The same as [`detect`](#detect), only the `iterator` is applied to each item in `arr`
in series. This means the result is always the first in the original `arr` (in
terms of array order) that passes the truth test.
---------------------------------------
### sortBy(arr, iterator, callback)
Sorts a list by the results of running each `arr` value through an async `iterator`.
__Arguments__
* `arr` - An array to iterate over.
* `iterator(item, callback)` - A function to apply to each item in `arr`.
The iterator is passed a `callback(err, sortValue)` which must be called once it
has completed with an error (which can be `null`) and a value to use as the sort
criteria.
* `callback(err, results)` - A callback which is called after all the `iterator`
functions have finished, or an error occurs. Results is the items from
the original `arr` sorted by the values returned by the `iterator` calls.
__Example__
```js
async.sortBy(['file1','file2','file3'], function(file, callback){
fs.stat(file, function(err, stats){
callback(err, stats.mtime);
});
}, function(err, results){
// results is now the original array of files sorted by
// modified date
});
```
__Sort Order__
By modifying the callback parameter the sorting order can be influenced:
```js
//ascending order
async.sortBy([1,9,3,5], function(x, callback){
callback(err, x);
}, function(err,result){
//result callback
} );
//descending order
async.sortBy([1,9,3,5], function(x, callback){
callback(err, x*-1); //<- x*-1 instead of x, turns the order around
}, function(err,result){
//result callback
} );
```
---------------------------------------
### some(arr, iterator, callback)
__Alias:__ `any`
Returns `true` if at least one element in the `arr` satisfies an async test.
_The callback for each iterator call only accepts a single argument of `true` or
`false`; it does not accept an error argument first!_ This is in-line with the
way node libraries work with truth tests like `fs.exists`. Once any iterator
call returns `true`, the main `callback` is immediately called.
__Arguments__
* `arr` - An array to iterate over.
* `iterator(item, callback)` - A truth test to apply to each item in the array
in parallel. The iterator is passed a callback(truthValue) which must be
called with a boolean argument once it has completed.
* `callback(result)` - A callback which is called as soon as any iterator returns
`true`, or after all the iterator functions have finished. Result will be
either `true` or `false` depending on the values of the async tests.
__Example__
```js
async.some(['file1','file2','file3'], fs.exists, function(result){
// if result is true then at least one of the files exists
});
```
---------------------------------------
### every(arr, iterator, callback)
__Alias:__ `all`
Returns `true` if every element in `arr` satisfies an async test.
_The callback for each `iterator` call only accepts a single argument of `true` or
`false`; it does not accept an error argument first!_ This is in-line with the
way node libraries work with truth tests like `fs.exists`.
__Arguments__
* `arr` - An array to iterate over.
* `iterator(item, callback)` - A truth test to apply to each item in the array
in parallel. The iterator is passed a callback(truthValue) which must be
called with a boolean argument once it has completed.
* `callback(result)` - A callback which is called after all the `iterator`
functions have finished. Result will be either `true` or `false` depending on
the values of the async tests.
__Example__
```js
async.every(['file1','file2','file3'], fs.exists, function(result){
// if result is true then every file exists
});
```
---------------------------------------
### concat(arr, iterator, callback)
Applies `iterator` to each item in `arr`, concatenating the results. Returns the
concatenated list. The `iterator`s are called in parallel, and the results are
concatenated as they return. There is no guarantee that the results array will
be returned in the original order of `arr` passed to the `iterator` function.
__Arguments__
* `arr` - An array to iterate over.
* `iterator(item, callback)` - A function to apply to each item in `arr`.
The iterator is passed a `callback(err, results)` which must be called once it
has completed with an error (which can be `null`) and an array of results.
* `callback(err, results)` - A callback which is called after all the `iterator`
functions have finished, or an error occurs. Results is an array containing
the concatenated results of the `iterator` function.
__Example__
```js
async.concat(['dir1','dir2','dir3'], fs.readdir, function(err, files){
// files is now a list of filenames that exist in the 3 directories
});
```
---------------------------------------
### concatSeries(arr, iterator, callback)
Same as [`concat`](#concat), but executes in series instead of parallel.
## Control Flow
### series(tasks, [callback])
Run the functions in the `tasks` array in series, each one running once the previous
function has completed. If any functions in the series pass an error to its
callback, no more functions are run, and `callback` is immediately called with the value of the error.
Otherwise, `callback` receives an array of results when `tasks` have completed.
It is also possible to use an object instead of an array. Each property will be
run as a function, and the results will be passed to the final `callback` as an object
instead of an array. This can be a more readable way of handling results from
[`series`](#series).
**Note** that while many implementations preserve the order of object properties, the
[ECMAScript Language Specifcation](http://www.ecma-international.org/ecma-262/5.1/#sec-8.6)
explicitly states that
> The mechanics and order of enumerating the properties is not specified.
So if you rely on the order in which your series of functions are executed, and want
this to work on all platforms, consider using an array.
__Arguments__
* `tasks` - An array or object containing functions to run, each function is passed
a `callback(err, result)` it must call on completion with an error `err` (which can
be `null`) and an optional `result` value.
* `callback(err, results)` - An optional callback to run once all the functions
have completed. This function gets a results array (or object) containing all
the result arguments passed to the `task` callbacks.
__Example__
```js
async.series([
function(callback){
// do some stuff ...
callback(null, 'one');
},
function(callback){
// do some more stuff ...
callback(null, 'two');
}
],
// optional callback
function(err, results){
// results is now equal to ['one', 'two']
});
// an example using an object instead of an array
async.series({
one: function(callback){
setTimeout(function(){
callback(null, 1);
}, 200);
},
two: function(callback){
setTimeout(function(){
callback(null, 2);
}, 100);
}
},
function(err, results) {
// results is now equal to: {one: 1, two: 2}
});
```
---------------------------------------
### parallel(tasks, [callback])
Run the `tasks` array of functions in parallel, without waiting until the previous
function has completed. If any of the functions pass an error to its
callback, the main `callback` is immediately called with the value of the error.
Once the `tasks` have completed, the results are passed to the final `callback` as an
array.
It is also possible to use an object instead of an array. Each property will be
run as a function and the results will be passed to the final `callback` as an object
instead of an array. This can be a more readable way of handling results from
[`parallel`](#parallel).
__Arguments__
* `tasks` - An array or object containing functions to run. Each function is passed
a `callback(err, result)` which it must call on completion with an error `err`
(which can be `null`) and an optional `result` value.
* `callback(err, results)` - An optional callback to run once all the functions
have completed. This function gets a results array (or object) containing all
the result arguments passed to the task callbacks.
__Example__
```js
async.parallel([
function(callback){
setTimeout(function(){
callback(null, 'one');
}, 200);
},
function(callback){
setTimeout(function(){
callback(null, 'two');
}, 100);
}
],
// optional callback
function(err, results){
// the results array will equal ['one','two'] even though
// the second function had a shorter timeout.
});
// an example using an object instead of an array
async.parallel({
one: function(callback){
setTimeout(function(){
callback(null, 1);
}, 200);
},
two: function(callback){
setTimeout(function(){
callback(null, 2);
}, 100);
}
},
function(err, results) {
// results is now equals to: {one: 1, two: 2}
});
```
---------------------------------------
### parallelLimit(tasks, limit, [callback])
The same as [`parallel`](#parallel), only `tasks` are executed in parallel
with a maximum of `limit` tasks executing at any time.
Note that the `tasks` are not executed in batches, so there is no guarantee that
the first `limit` tasks will complete before any others are started.
__Arguments__
* `tasks` - An array or object containing functions to run, each function is passed
a `callback(err, result)` it must call on completion with an error `err` (which can
be `null`) and an optional `result` value.
* `limit` - The maximum number of `tasks` to run at any time.
* `callback(err, results)` - An optional callback to run once all the functions
have completed. This function gets a results array (or object) containing all
the result arguments passed to the `task` callbacks.
---------------------------------------
### whilst(test, fn, callback)
Repeatedly call `fn`, while `test` returns `true`. Calls `callback` when stopped,
or an error occurs.
__Arguments__
* `test()` - synchronous truth test to perform before each execution of `fn`.
* `fn(callback)` - A function which is called each time `test` passes. The function is
passed a `callback(err)`, which must be called once it has completed with an
optional `err` argument.
* `callback(err)` - A callback which is called after the test fails and repeated
execution of `fn` has stopped.
__Example__
```js
var count = 0;
async.whilst(
function () { return count < 5; },
function (callback) {
count++;
setTimeout(callback, 1000);
},
function (err) {
// 5 seconds have passed
}
);
```
---------------------------------------
### doWhilst(fn, test, callback)
The post-check version of [`whilst`](#whilst). To reflect the difference in
the order of operations, the arguments `test` and `fn` are switched.
`doWhilst` is to `whilst` as `do while` is to `while` in plain JavaScript.
---------------------------------------
### until(test, fn, callback)
Repeatedly call `fn` until `test` returns `true`. Calls `callback` when stopped,
or an error occurs.
The inverse of [`whilst`](#whilst).
---------------------------------------
### doUntil(fn, test, callback)
Like [`doWhilst`](#doWhilst), except the `test` is inverted. Note the argument ordering differs from `until`.
---------------------------------------
### forever(fn, errback)
Calls the asynchronous function `fn` with a callback parameter that allows it to
call itself again, in series, indefinitely.
If an error is passed to the callback then `errback` is called with the
error, and execution stops, otherwise it will never be called.
```js
async.forever(
function(next) {
// next is suitable for passing to things that need a callback(err [, whatever]);
// it will result in this function being called again.
},
function(err) {
// if next is called with a value in its first parameter, it will appear
// in here as 'err', and execution will stop.
}
);
```
---------------------------------------
### waterfall(tasks, [callback])
Runs the `tasks` array of functions in series, each passing their results to the next in
the array. However, if any of the `tasks` pass an error to their own callback, the
next function is not executed, and the main `callback` is immediately called with
the error.
__Arguments__
* `tasks` - An array of functions to run, each function is passed a
`callback(err, result1, result2, ...)` it must call on completion. The first
argument is an error (which can be `null`) and any further arguments will be
passed as arguments in order to the next task.
* `callback(err, [results])` - An optional callback to run once all the functions
have completed. This will be passed the results of the last task's callback.
__Example__
```js
async.waterfall([
function(callback){
callback(null, 'one', 'two');
},
function(arg1, arg2, callback){
// arg1 now equals 'one' and arg2 now equals 'two'
callback(null, 'three');
},
function(arg1, callback){
// arg1 now equals 'three'
callback(null, 'done');
}
], function (err, result) {
// result now equals 'done'
});
```
---------------------------------------
### compose(fn1, fn2...)
Creates a function which is a composition of the passed asynchronous
functions. Each function consumes the return value of the function that
follows. Composing functions `f()`, `g()`, and `h()` would produce the result of
`f(g(h()))`, only this version uses callbacks to obtain the return values.
Each function is executed with the `this` binding of the composed function.
__Arguments__
* `functions...` - the asynchronous functions to compose
__Example__
```js
function add1(n, callback) {
setTimeout(function () {
callback(null, n + 1);
}, 10);
}
function mul3(n, callback) {
setTimeout(function () {
callback(null, n * 3);
}, 10);
}
var add1mul3 = async.compose(mul3, add1);
add1mul3(4, function (err, result) {
// result now equals 15
});
```
---------------------------------------
### seq(fn1, fn2...)
Version of the compose function that is more natural to read.
Each following function consumes the return value of the latter function.
Each function is executed with the `this` binding of the composed function.
__Arguments__
* functions... - the asynchronous functions to compose
__Example__
```js
// Requires lodash (or underscore), express3 and dresende's orm2.
// Part of an app, that fetches cats of the logged user.
// This example uses `seq` function to avoid overnesting and error
// handling clutter.
app.get('/cats', function(request, response) {
function handleError(err, data, callback) {
if (err) {
console.error(err);
response.json({ status: 'error', message: err.message });
}
else {
callback(data);
}
}
var User = request.models.User;
async.seq(
_.bind(User.get, User), // 'User.get' has signature (id, callback(err, data))
handleError,
function(user, fn) {
user.getCats(fn); // 'getCats' has signature (callback(err, data))
},
handleError,
function(cats) {
response.json({ status: 'ok', message: 'Cats found', data: cats });
}
)(req.session.user_id);
}
});
```
---------------------------------------
### applyEach(fns, args..., callback)
Applies the provided arguments to each function in the array, calling
`callback` after all functions have completed. If you only provide the first
argument, then it will return a function which lets you pass in the
arguments as if it were a single function call.
__Arguments__
* `fns` - the asynchronous functions to all call with the same arguments
* `args...` - any number of separate arguments to pass to the function
* `callback` - the final argument should be the callback, called when all
functions have completed processing
__Example__
```js
async.applyEach([enableSearch, updateSchema], 'bucket', callback);
// partial application example:
async.each(
buckets,
async.applyEach([enableSearch, updateSchema]),
callback
);
```
---------------------------------------
### applyEachSeries(arr, iterator, callback)
The same as [`applyEach`](#applyEach) only the functions are applied in series.
---------------------------------------
### queue(worker, concurrency)
Creates a `queue` object with the specified `concurrency`. Tasks added to the
`queue` are processed in parallel (up to the `concurrency` limit). If all
`worker`s are in progress, the task is queued until one becomes available.
Once a `worker` completes a `task`, that `task`'s callback is called.
__Arguments__
* `worker(task, callback)` - An asynchronous function for processing a queued
task, which must call its `callback(err)` argument when finished, with an
optional `error` as an argument.
* `concurrency` - An `integer` for determining how many `worker` functions should be
run in parallel.
__Queue objects__
The `queue` object returned by this function has the following properties and
methods:
* `length()` - a function returning the number of items waiting to be processed.
* `started` - a function returning whether or not any items have been pushed and processed by the queue
* `running()` - a function returning the number of items currently being processed.
* `idle()` - a function returning false if there are items waiting or being processed, or true if not.
* `concurrency` - an integer for determining how many `worker` functions should be
run in parallel. This property can be changed after a `queue` is created to
alter the concurrency on-the-fly.
* `push(task, [callback])` - add a new task to the `queue`. Calls `callback` once
the `worker` has finished processing the task. Instead of a single task, a `tasks` array
can be submitted. The respective callback is used for every task in the list.
* `unshift(task, [callback])` - add a new task to the front of the `queue`.
* `saturated` - a callback that is called when the `queue` length hits the `concurrency` limit,
and further tasks will be queued.
* `empty` - a callback that is called when the last item from the `queue` is given to a `worker`.
* `drain` - a callback that is called when the last item from the `queue` has returned from the `worker`.
* `paused` - a boolean for determining whether the queue is in a paused state
* `pause()` - a function that pauses the processing of tasks until `resume()` is called.
* `resume()` - a function that resumes the processing of queued tasks when the queue is paused.
* `kill()` - a function that empties remaining tasks from the queue forcing it to go idle.
__Example__
```js
// create a queue object with concurrency 2
var q = async.queue(function (task, callback) {
console.log('hello ' + task.name);
callback();
}, 2);
// assign a callback
q.drain = function() {
console.log('all items have been processed');
}
// add some items to the queue
q.push({name: 'foo'}, function (err) {
console.log('finished processing foo');
});
q.push({name: 'bar'}, function (err) {
console.log('finished processing bar');
});
// add some items to the queue (batch-wise)
q.push([{name: 'baz'},{name: 'bay'},{name: 'bax'}], function (err) {
console.log('finished processing bar');
});
// add some items to the front of the queue
q.unshift({name: 'bar'}, function (err) {
console.log('finished processing bar');
});
```
---------------------------------------
### cargo(worker, [payload])
Creates a `cargo` object with the specified payload. Tasks added to the
cargo will be processed altogether (up to the `payload` limit). If the
`worker` is in progress, the task is queued until it becomes available. Once
the `worker` has completed some tasks, each callback of those tasks is called.
Check out [this animation](https://camo.githubusercontent.com/6bbd36f4cf5b35a0f11a96dcd2e97711ffc2fb37/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313637363837312f36383130382f62626330636662302d356632392d313165322d393734662d3333393763363464633835382e676966) for how `cargo` and `queue` work.
While [queue](#queue) passes only one task to one of a group of workers
at a time, cargo passes an array of tasks to a single worker, repeating
when the worker is finished.
__Arguments__
* `worker(tasks, callback)` - An asynchronous function for processing an array of
queued tasks, which must call its `callback(err)` argument when finished, with
an optional `err` argument.
* `payload` - An optional `integer` for determining how many tasks should be
processed per round; if omitted, the default is unlimited.
__Cargo objects__
The `cargo` object returned by this function has the following properties and
methods:
* `length()` - A function returning the number of items waiting to be processed.
* `payload` - An `integer` for determining how many tasks should be
process per round. This property can be changed after a `cargo` is created to
alter the payload on-the-fly.
* `push(task, [callback])` - Adds `task` to the `queue`. The callback is called
once the `worker` has finished processing the task. Instead of a single task, an array of `tasks`
can be submitted. The respective callback is used for every task in the list.
* `saturated` - A callback that is called when the `queue.length()` hits the concurrency and further tasks will be queued.
* `empty` - A callback that is called when the last item from the `queue` is given to a `worker`.
* `drain` - A callback that is called when the last item from the `queue` has returned from the `worker`.
__Example__
```js
// create a cargo object with payload 2
var cargo = async.cargo(function (tasks, callback) {
for(var i=0; i
### auto(tasks, [callback])
Determines the best order for running the functions in `tasks`, based on their
requirements. Each function can optionally depend on other functions being completed
first, and each function is run as soon as its requirements are satisfied.
If any of the functions pass an error to their callback, it will not
complete (so any other functions depending on it will not run), and the main
`callback` is immediately called with the error. Functions also receive an
object containing the results of functions which have completed so far.
Note, all functions are called with a `results` object as a second argument,
so it is unsafe to pass functions in the `tasks` object which cannot handle the
extra argument.
For example, this snippet of code:
```js
async.auto({
readData: async.apply(fs.readFile, 'data.txt', 'utf-8')
}, callback);
```
will have the effect of calling `readFile` with the results object as the last
argument, which will fail:
```js
fs.readFile('data.txt', 'utf-8', cb, {});
```
Instead, wrap the call to `readFile` in a function which does not forward the
`results` object:
```js
async.auto({
readData: function(cb, results){
fs.readFile('data.txt', 'utf-8', cb);
}
}, callback);
```
__Arguments__
* `tasks` - An object. Each of its properties is either a function or an array of
requirements, with the function itself the last item in the array. The object's key
of a property serves as the name of the task defined by that property,
i.e. can be used when specifying requirements for other tasks.
The function receives two arguments: (1) a `callback(err, result)` which must be
called when finished, passing an `error` (which can be `null`) and the result of
the function's execution, and (2) a `results` object, containing the results of
the previously executed functions.
* `callback(err, results)` - An optional callback which is called when all the
tasks have been completed. It receives the `err` argument if any `tasks`
pass an error to their callback. Results are always returned; however, if
an error occurs, no further `tasks` will be performed, and the results
object will only contain partial results.
__Example__
```js
async.auto({
get_data: function(callback){
console.log('in get_data');
// async code to get some data
callback(null, 'data', 'converted to array');
},
make_folder: function(callback){
console.log('in make_folder');
// async code to create a directory to store a file in
// this is run at the same time as getting the data
callback(null, 'folder');
},
write_file: ['get_data', 'make_folder', function(callback, results){
console.log('in write_file', JSON.stringify(results));
// once there is some data and the directory exists,
// write the data to a file in the directory
callback(null, 'filename');
}],
email_link: ['write_file', function(callback, results){
console.log('in email_link', JSON.stringify(results));
// once the file is written let's email a link to it...
// results.write_file contains the filename returned by write_file.
callback(null, {'file':results.write_file, 'email':'user@example.com'});
}]
}, function(err, results) {
console.log('err = ', err);
console.log('results = ', results);
});
```
This is a fairly trivial example, but to do this using the basic parallel and
series functions would look like this:
```js
async.parallel([
function(callback){
console.log('in get_data');
// async code to get some data
callback(null, 'data', 'converted to array');
},
function(callback){
console.log('in make_folder');
// async code to create a directory to store a file in
// this is run at the same time as getting the data
callback(null, 'folder');
}
],
function(err, results){
async.series([
function(callback){
console.log('in write_file', JSON.stringify(results));
// once there is some data and the directory exists,
// write the data to a file in the directory
results.push('filename');
callback(null);
},
function(callback){
console.log('in email_link', JSON.stringify(results));
// once the file is written let's email a link to it...
callback(null, {'file':results.pop(), 'email':'user@example.com'});
}
]);
});
```
For a complicated series of `async` tasks, using the [`auto`](#auto) function makes adding
new tasks much easier (and the code more readable).
---------------------------------------
### retry([times = 5], task, [callback])
Attempts to get a successful response from `task` no more than `times` times before
returning an error. If the task is successful, the `callback` will be passed the result
of the successfull task. If all attemps fail, the callback will be passed the error and
result (if any) of the final attempt.
__Arguments__
* `times` - An integer indicating how many times to attempt the `task` before giving up. Defaults to 5.
* `task(callback, results)` - A function which receives two arguments: (1) a `callback(err, result)`
which must be called when finished, passing `err` (which can be `null`) and the `result` of
the function's execution, and (2) a `results` object, containing the results of
the previously executed functions (if nested inside another control flow).
* `callback(err, results)` - An optional callback which is called when the
task has succeeded, or after the final failed attempt. It receives the `err` and `result` arguments of the last attempt at completing the `task`.
The [`retry`](#retry) function can be used as a stand-alone control flow by passing a
callback, as shown below:
```js
async.retry(3, apiMethod, function(err, result) {
// do something with the result
});
```
It can also be embeded within other control flow functions to retry individual methods
that are not as reliable, like this:
```js
async.auto({
users: api.getUsers.bind(api),
payments: async.retry(3, api.getPayments.bind(api))
}, function(err, results) {
// do something with the results
});
```
---------------------------------------
### iterator(tasks)
Creates an iterator function which calls the next function in the `tasks` array,
returning a continuation to call the next one after that. It's also possible to
“peek” at the next iterator with `iterator.next()`.
This function is used internally by the `async` module, but can be useful when
you want to manually control the flow of functions in series.
__Arguments__
* `tasks` - An array of functions to run.
__Example__
```js
var iterator = async.iterator([
function(){ sys.p('one'); },
function(){ sys.p('two'); },
function(){ sys.p('three'); }
]);
node> var iterator2 = iterator();
'one'
node> var iterator3 = iterator2();
'two'
node> iterator3();
'three'
node> var nextfn = iterator2.next();
node> nextfn();
'three'
```
---------------------------------------
### apply(function, arguments..)
Creates a continuation function with some arguments already applied.
Useful as a shorthand when combined with other control flow functions. Any arguments
passed to the returned function are added to the arguments originally passed
to apply.
__Arguments__
* `function` - The function you want to eventually apply all arguments to.
* `arguments...` - Any number of arguments to automatically apply when the
continuation is called.
__Example__
```js
// using apply
async.parallel([
async.apply(fs.writeFile, 'testfile1', 'test1'),
async.apply(fs.writeFile, 'testfile2', 'test2'),
]);
// the same process without using apply
async.parallel([
function(callback){
fs.writeFile('testfile1', 'test1', callback);
},
function(callback){
fs.writeFile('testfile2', 'test2', callback);
}
]);
```
It's possible to pass any number of additional arguments when calling the
continuation:
```js
node> var fn = async.apply(sys.puts, 'one');
node> fn('two', 'three');
one
two
three
```
---------------------------------------
### nextTick(callback)
Calls `callback` on a later loop around the event loop. In Node.js this just
calls `process.nextTick`; in the browser it falls back to `setImmediate(callback)`
if available, otherwise `setTimeout(callback, 0)`, which means other higher priority
events may precede the execution of `callback`.
This is used internally for browser-compatibility purposes.
__Arguments__
* `callback` - The function to call on a later loop around the event loop.
__Example__
```js
var call_order = [];
async.nextTick(function(){
call_order.push('two');
// call_order now equals ['one','two']
});
call_order.push('one')
```
### times(n, callback)
Calls the `callback` function `n` times, and accumulates results in the same manner
you would use with [`map`](#map).
__Arguments__
* `n` - The number of times to run the function.
* `callback` - The function to call `n` times.
__Example__
```js
// Pretend this is some complicated async factory
var createUser = function(id, callback) {
callback(null, {
id: 'user' + id
})
}
// generate 5 users
async.times(5, function(n, next){
createUser(n, function(err, user) {
next(err, user)
})
}, function(err, users) {
// we should now have 5 users
});
```
### timesSeries(n, callback)
The same as [`times`](#times), only the iterator is applied to each item in `arr` in
series. The next `iterator` is only called once the current one has completed.
The results array will be in the same order as the original.
## Utils
### memoize(fn, [hasher])
Caches the results of an `async` function. When creating a hash to store function
results against, the callback is omitted from the hash and an optional hash
function can be used.
The cache of results is exposed as the `memo` property of the function returned
by `memoize`.
__Arguments__
* `fn` - The function to proxy and cache results from.
* `hasher` - Tn optional function for generating a custom hash for storing
results. It has all the arguments applied to it apart from the callback, and
must be synchronous.
__Example__
```js
var slow_fn = function (name, callback) {
// do something
callback(null, result);
};
var fn = async.memoize(slow_fn);
// fn can now be used as if it were slow_fn
fn('some name', function () {
// callback
});
```
### unmemoize(fn)
Undoes a [`memoize`](#memoize)d function, reverting it to the original, unmemoized
form. Handy for testing.
__Arguments__
* `fn` - the memoized function
### log(function, arguments)
Logs the result of an `async` function to the `console`. Only works in Node.js or
in browsers that support `console.log` and `console.error` (such as FF and Chrome).
If multiple arguments are returned from the async function, `console.log` is
called on each argument in order.
__Arguments__
* `function` - The function you want to eventually apply all arguments to.
* `arguments...` - Any number of arguments to apply to the function.
__Example__
```js
var hello = function(name, callback){
setTimeout(function(){
callback(null, 'hello ' + name);
}, 1000);
};
```
```js
node> async.log(hello, 'world');
'hello world'
```
---------------------------------------
### dir(function, arguments)
Logs the result of an `async` function to the `console` using `console.dir` to
display the properties of the resulting object. Only works in Node.js or
in browsers that support `console.dir` and `console.error` (such as FF and Chrome).
If multiple arguments are returned from the async function, `console.dir` is
called on each argument in order.
__Arguments__
* `function` - The function you want to eventually apply all arguments to.
* `arguments...` - Any number of arguments to apply to the function.
__Example__
```js
var hello = function(name, callback){
setTimeout(function(){
callback(null, {hello: name});
}, 1000);
};
```
```js
node> async.dir(hello, 'world');
{hello: 'world'}
```
---------------------------------------
### noConflict()
Changes the value of `async` back to its original value, returning a reference to the
`async` object.
async-0.8.0/component.json 0000664 0000000 0000000 00000000424 12327742260 0015536 0 ustar 00root root 0000000 0000000 {
"name": "async",
"repo": "caolan/async",
"description": "Higher-order functions and common patterns for asynchronous code",
"version": "0.1.23",
"keywords": [],
"dependencies": {},
"development": {},
"main": "lib/async.js",
"scripts": [ "lib/async.js" ]
}
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* Styles taken from qunit.css
*/
h1#nodeunit-header, h1.nodeunit-header {
padding: 15px;
font-size: large;
background-color: #06b;
color: white;
font-family: 'trebuchet ms', verdana, arial;
margin: 0;
}
h1#nodeunit-header a {
color: white;
}
h2#nodeunit-banner {
height: 2em;
border-bottom: 1px solid white;
background-color: #eee;
margin: 0;
font-family: 'trebuchet ms', verdana, arial;
}
h2#nodeunit-banner.pass {
background-color: green;
}
h2#nodeunit-banner.fail {
background-color: red;
}
h2#nodeunit-userAgent, h2.nodeunit-userAgent {
padding: 10px;
background-color: #eee;
color: black;
margin: 0;
font-size: small;
font-weight: normal;
font-family: 'trebuchet ms', verdana, arial;
font-size: 10pt;
}
div#nodeunit-testrunner-toolbar {
background: #eee;
border-top: 1px solid black;
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ol#nodeunit-tests {
font-family: 'trebuchet ms', verdana, arial;
font-size: 10pt;
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ol#nodeunit-tests li strong {
cursor:pointer;
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ol#nodeunit-tests .pass {
color: green;
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ol#nodeunit-tests .fail {
color: red;
}
p#nodeunit-testresult {
margin-left: 1em;
font-size: 10pt;
font-family: 'trebuchet ms', verdana, arial;
}
async-0.8.0/deps/nodeunit.js 0000664 0000000 0000000 00000166335 12327742260 0015775 0 ustar 00root root 0000000 0000000 /*!
* Nodeunit
* https://github.com/caolan/nodeunit
* Copyright (c) 2010 Caolan McMahon
* MIT Licensed
*
* json2.js
* http://www.JSON.org/json2.js
* Public Domain.
* NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
*/
nodeunit = (function(){
/*
http://www.JSON.org/json2.js
2010-11-17
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 ' '),
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.
if (!this.JSON) {
this.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) {
k = rep[i];
if (typeof k === 'string') {
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.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.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');
};
}
}());
var assert = this.assert = {};
var types = {};
var core = {};
var nodeunit = {};
var reporter = {};
/*global setTimeout: false, console: false */
(function () {
var async = {};
// global on the server, window in the browser
var root = this,
previous_async = root.async;
if (typeof module !== 'undefined' && module.exports) {
module.exports = async;
}
else {
root.async = async;
}
async.noConflict = function () {
root.async = previous_async;
return async;
};
//// cross-browser compatiblity functions ////
var _forEach = function (arr, iterator) {
if (arr.forEach) {
return arr.forEach(iterator);
}
for (var i = 0; i < arr.length; i += 1) {
iterator(arr[i], i, arr);
}
};
var _map = function (arr, iterator) {
if (arr.map) {
return arr.map(iterator);
}
var results = [];
_forEach(arr, function (x, i, a) {
results.push(iterator(x, i, a));
});
return results;
};
var _reduce = function (arr, iterator, memo) {
if (arr.reduce) {
return arr.reduce(iterator, memo);
}
_forEach(arr, function (x, i, a) {
memo = iterator(memo, x, i, a);
});
return memo;
};
var _keys = function (obj) {
if (Object.keys) {
return Object.keys(obj);
}
var keys = [];
for (var k in obj) {
if (obj.hasOwnProperty(k)) {
keys.push(k);
}
}
return keys;
};
var _indexOf = function (arr, item) {
if (arr.indexOf) {
return arr.indexOf(item);
}
for (var i = 0; i < arr.length; i += 1) {
if (arr[i] === item) {
return i;
}
}
return -1;
};
//// exported async module functions ////
//// nextTick implementation with browser-compatible fallback ////
async.nextTick = function (fn) {
if (typeof process === 'undefined' || !(process.nextTick)) {
setTimeout(fn, 0);
}
else {
process.nextTick(fn);
}
};
async.forEach = function (arr, iterator, callback) {
if (!arr.length) {
return callback();
}
var completed = 0;
_forEach(arr, function (x) {
iterator(x, function (err) {
if (err) {
callback(err);
callback = function () {};
}
else {
completed += 1;
if (completed === arr.length) {
callback();
}
}
});
});
};
async.forEachSeries = function (arr, iterator, callback) {
if (!arr.length) {
return callback();
}
var completed = 0;
var iterate = function () {
iterator(arr[completed], function (err) {
if (err) {
callback(err);
callback = function () {};
}
else {
completed += 1;
if (completed === arr.length) {
callback();
}
else {
iterate();
}
}
});
};
iterate();
};
var doParallel = function (fn) {
return function () {
var args = Array.prototype.slice.call(arguments);
return fn.apply(null, [async.forEach].concat(args));
};
};
var doSeries = function (fn) {
return function () {
var args = Array.prototype.slice.call(arguments);
return fn.apply(null, [async.forEachSeries].concat(args));
};
};
var _asyncMap = function (eachfn, arr, iterator, callback) {
var results = [];
arr = _map(arr, function (x, i) {
return {index: i, value: x};
});
eachfn(arr, function (x, callback) {
iterator(x.value, function (err, v) {
results[x.index] = v;
callback(err);
});
}, function (err) {
callback(err, results);
});
};
async.map = doParallel(_asyncMap);
async.mapSeries = doSeries(_asyncMap);
// reduce only has a series version, as doing reduce in parallel won't
// work in many situations.
async.reduce = function (arr, memo, iterator, callback) {
async.forEachSeries(arr, function (x, callback) {
iterator(memo, x, function (err, v) {
memo = v;
callback(err);
});
}, function (err) {
callback(err, memo);
});
};
// inject alias
async.inject = async.reduce;
// foldl alias
async.foldl = async.reduce;
async.reduceRight = function (arr, memo, iterator, callback) {
var reversed = _map(arr, function (x) {
return x;
}).reverse();
async.reduce(reversed, memo, iterator, callback);
};
// foldr alias
async.foldr = async.reduceRight;
var _filter = function (eachfn, arr, iterator, callback) {
var results = [];
arr = _map(arr, function (x, i) {
return {index: i, value: x};
});
eachfn(arr, function (x, callback) {
iterator(x.value, function (v) {
if (v) {
results.push(x);
}
callback();
});
}, function (err) {
callback(_map(results.sort(function (a, b) {
return a.index - b.index;
}), function (x) {
return x.value;
}));
});
};
async.filter = doParallel(_filter);
async.filterSeries = doSeries(_filter);
// select alias
async.select = async.filter;
async.selectSeries = async.filterSeries;
var _reject = function (eachfn, arr, iterator, callback) {
var results = [];
arr = _map(arr, function (x, i) {
return {index: i, value: x};
});
eachfn(arr, function (x, callback) {
iterator(x.value, function (v) {
if (!v) {
results.push(x);
}
callback();
});
}, function (err) {
callback(_map(results.sort(function (a, b) {
return a.index - b.index;
}), function (x) {
return x.value;
}));
});
};
async.reject = doParallel(_reject);
async.rejectSeries = doSeries(_reject);
var _detect = function (eachfn, arr, iterator, main_callback) {
eachfn(arr, function (x, callback) {
iterator(x, function (result) {
if (result) {
main_callback(x);
}
else {
callback();
}
});
}, function (err) {
main_callback();
});
};
async.detect = doParallel(_detect);
async.detectSeries = doSeries(_detect);
async.some = function (arr, iterator, main_callback) {
async.forEach(arr, function (x, callback) {
iterator(x, function (v) {
if (v) {
main_callback(true);
main_callback = function () {};
}
callback();
});
}, function (err) {
main_callback(false);
});
};
// any alias
async.any = async.some;
async.every = function (arr, iterator, main_callback) {
async.forEach(arr, function (x, callback) {
iterator(x, function (v) {
if (!v) {
main_callback(false);
main_callback = function () {};
}
callback();
});
}, function (err) {
main_callback(true);
});
};
// all alias
async.all = async.every;
async.sortBy = function (arr, iterator, callback) {
async.map(arr, function (x, callback) {
iterator(x, function (err, criteria) {
if (err) {
callback(err);
}
else {
callback(null, {value: x, criteria: criteria});
}
});
}, function (err, results) {
if (err) {
return callback(err);
}
else {
var fn = function (left, right) {
var a = left.criteria, b = right.criteria;
return a < b ? -1 : a > b ? 1 : 0;
};
callback(null, _map(results.sort(fn), function (x) {
return x.value;
}));
}
});
};
async.auto = function (tasks, callback) {
callback = callback || function () {};
var keys = _keys(tasks);
if (!keys.length) {
return callback(null);
}
var completed = [];
var listeners = [];
var addListener = function (fn) {
listeners.unshift(fn);
};
var removeListener = function (fn) {
for (var i = 0; i < listeners.length; i += 1) {
if (listeners[i] === fn) {
listeners.splice(i, 1);
return;
}
}
};
var taskComplete = function () {
_forEach(listeners, function (fn) {
fn();
});
};
addListener(function () {
if (completed.length === keys.length) {
callback(null);
}
});
_forEach(keys, function (k) {
var task = (tasks[k] instanceof Function) ? [tasks[k]]: tasks[k];
var taskCallback = function (err) {
if (err) {
callback(err);
// stop subsequent errors hitting callback multiple times
callback = function () {};
}
else {
completed.push(k);
taskComplete();
}
};
var requires = task.slice(0, Math.abs(task.length - 1)) || [];
var ready = function () {
return _reduce(requires, function (a, x) {
return (a && _indexOf(completed, x) !== -1);
}, true);
};
if (ready()) {
task[task.length - 1](taskCallback);
}
else {
var listener = function () {
if (ready()) {
removeListener(listener);
task[task.length - 1](taskCallback);
}
};
addListener(listener);
}
});
};
async.waterfall = function (tasks, callback) {
if (!tasks.length) {
return callback();
}
callback = callback || function () {};
var wrapIterator = function (iterator) {
return function (err) {
if (err) {
callback(err);
callback = function () {};
}
else {
var args = Array.prototype.slice.call(arguments, 1);
var next = iterator.next();
if (next) {
args.push(wrapIterator(next));
}
else {
args.push(callback);
}
async.nextTick(function () {
iterator.apply(null, args);
});
}
};
};
wrapIterator(async.iterator(tasks))();
};
async.parallel = function (tasks, callback) {
callback = callback || function () {};
if (tasks.constructor === Array) {
async.map(tasks, function (fn, callback) {
if (fn) {
fn(function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
callback.call(null, err, args || null);
});
}
}, callback);
}
else {
var results = {};
async.forEach(_keys(tasks), function (k, callback) {
tasks[k](function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
results[k] = args;
callback(err);
});
}, function (err) {
callback(err, results);
});
}
};
async.series = function (tasks, callback) {
callback = callback || function () {};
if (tasks.constructor === Array) {
async.mapSeries(tasks, function (fn, callback) {
if (fn) {
fn(function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
callback.call(null, err, args || null);
});
}
}, callback);
}
else {
var results = {};
async.forEachSeries(_keys(tasks), function (k, callback) {
tasks[k](function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
results[k] = args;
callback(err);
});
}, function (err) {
callback(err, results);
});
}
};
async.iterator = function (tasks) {
var makeCallback = function (index) {
var fn = function () {
if (tasks.length) {
tasks[index].apply(null, arguments);
}
return fn.next();
};
fn.next = function () {
return (index < tasks.length - 1) ? makeCallback(index + 1): null;
};
return fn;
};
return makeCallback(0);
};
async.apply = function (fn) {
var args = Array.prototype.slice.call(arguments, 1);
return function () {
return fn.apply(
null, args.concat(Array.prototype.slice.call(arguments))
);
};
};
var _concat = function (eachfn, arr, fn, callback) {
var r = [];
eachfn(arr, function (x, cb) {
fn(x, function (err, y) {
r = r.concat(y || []);
cb(err);
});
}, function (err) {
callback(err, r);
});
};
async.concat = doParallel(_concat);
async.concatSeries = doSeries(_concat);
async.whilst = function (test, iterator, callback) {
if (test()) {
iterator(function (err) {
if (err) {
return callback(err);
}
async.whilst(test, iterator, callback);
});
}
else {
callback();
}
};
async.until = function (test, iterator, callback) {
if (!test()) {
iterator(function (err) {
if (err) {
return callback(err);
}
async.until(test, iterator, callback);
});
}
else {
callback();
}
};
async.queue = function (worker, concurrency) {
var workers = 0;
var tasks = [];
var q = {
concurrency: concurrency,
push: function (data, callback) {
tasks.push({data: data, callback: callback});
async.nextTick(q.process);
},
process: function () {
if (workers < q.concurrency && tasks.length) {
var task = tasks.splice(0, 1)[0];
workers += 1;
worker(task.data, function () {
workers -= 1;
if (task.callback) {
task.callback.apply(task, arguments);
}
q.process();
});
}
},
length: function () {
return tasks.length;
}
};
return q;
};
var _console_fn = function (name) {
return function (fn) {
var args = Array.prototype.slice.call(arguments, 1);
fn.apply(null, args.concat([function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (typeof console !== 'undefined') {
if (err) {
if (console.error) {
console.error(err);
}
}
else if (console[name]) {
_forEach(args, function (x) {
console[name](x);
});
}
}
}]));
};
};
async.log = _console_fn('log');
async.dir = _console_fn('dir');
/*async.info = _console_fn('info');
async.warn = _console_fn('warn');
async.error = _console_fn('error');*/
}());
(function(exports){
/**
* This file is based on the node.js assert module, but with some small
* changes for browser-compatibility
* THIS FILE SHOULD BE BROWSER-COMPATIBLE JS!
*/
/**
* Added for browser compatibility
*/
var _keys = function(obj){
if(Object.keys) return Object.keys(obj);
var keys = [];
for(var k in obj){
if(obj.hasOwnProperty(k)) keys.push(k);
}
return keys;
};
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
var pSlice = Array.prototype.slice;
// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.
var assert = exports;
// 2. The AssertionError is defined in assert.
// new assert.AssertionError({message: message, actual: actual, expected: expected})
assert.AssertionError = function AssertionError (options) {
this.name = "AssertionError";
this.message = options.message;
this.actual = options.actual;
this.expected = options.expected;
this.operator = options.operator;
var stackStartFunction = options.stackStartFunction || fail;
if (Error.captureStackTrace) {
Error.captureStackTrace(this, stackStartFunction);
}
};
// code from util.inherits in node
assert.AssertionError.super_ = Error;
// EDITED FOR BROWSER COMPATIBILITY: replaced Object.create call
// TODO: test what effect this may have
var ctor = function () { this.constructor = assert.AssertionError; };
ctor.prototype = Error.prototype;
assert.AssertionError.prototype = new ctor();
assert.AssertionError.prototype.toString = function() {
if (this.message) {
return [this.name+":", this.message].join(' ');
} else {
return [ this.name+":"
, JSON.stringify(this.expected )
, this.operator
, JSON.stringify(this.actual)
].join(" ");
}
};
// assert.AssertionError instanceof Error
assert.AssertionError.__proto__ = Error.prototype;
// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.
// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided. All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.
function fail(actual, expected, message, operator, stackStartFunction) {
throw new assert.AssertionError({
message: message,
actual: actual,
expected: expected,
operator: operator,
stackStartFunction: stackStartFunction
});
}
// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;
// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.
assert.ok = function ok(value, message) {
if (!!!value) fail(value, true, message, "==", assert.ok);
};
// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);
assert.equal = function equal(actual, expected, message) {
if (actual != expected) fail(actual, expected, message, "==", assert.equal);
};
// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);
assert.notEqual = function notEqual(actual, expected, message) {
if (actual == expected) {
fail(actual, expected, message, "!=", assert.notEqual);
}
};
// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);
assert.deepEqual = function deepEqual(actual, expected, message) {
if (!_deepEqual(actual, expected)) {
fail(actual, expected, message, "deepEqual", assert.deepEqual);
}
};
function _deepEqual(actual, expected) {
// 7.1. All identical values are equivalent, as determined by ===.
if (actual === expected) {
return true;
// 7.2. If the expected value is a Date object, the actual value is
// equivalent if it is also a Date object that refers to the same time.
} else if (actual instanceof Date && expected instanceof Date) {
return actual.getTime() === expected.getTime();
// 7.3. Other pairs that do not both pass typeof value == "object",
// equivalence is determined by ==.
} else if (typeof actual != 'object' && typeof expected != 'object') {
return actual == expected;
// 7.4. For all other Object pairs, including Array objects, equivalence is
// determined by having the same number of owned properties (as verified
// with Object.prototype.hasOwnProperty.call), the same set of keys
// (although not necessarily the same order), equivalent values for every
// corresponding key, and an identical "prototype" property. Note: this
// accounts for both named and indexed properties on Arrays.
} else {
return objEquiv(actual, expected);
}
}
function isUndefinedOrNull (value) {
return value === null || value === undefined;
}
function isArguments (object) {
return Object.prototype.toString.call(object) == '[object Arguments]';
}
function objEquiv (a, b) {
if (isUndefinedOrNull(a) || isUndefinedOrNull(b))
return false;
// an identical "prototype" property.
if (a.prototype !== b.prototype) return false;
//~~~I've managed to break Object.keys through screwy arguments passing.
// Converting to array solves the problem.
if (isArguments(a)) {
if (!isArguments(b)) {
return false;
}
a = pSlice.call(a);
b = pSlice.call(b);
return _deepEqual(a, b);
}
try{
var ka = _keys(a),
kb = _keys(b),
key, i;
} catch (e) {//happens when one is a string literal and the other isn't
return false;
}
// having the same number of owned properties (keys incorporates hasOwnProperty)
if (ka.length != kb.length)
return false;
//the same set of keys (although not necessarily the same order),
ka.sort();
kb.sort();
//~~~cheap key test
for (i = ka.length - 1; i >= 0; i--) {
if (ka[i] != kb[i])
return false;
}
//equivalent values for every corresponding key, and
//~~~possibly expensive deep test
for (i = ka.length - 1; i >= 0; i--) {
key = ka[i];
if (!_deepEqual(a[key], b[key] ))
return false;
}
return true;
}
// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);
assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
if (_deepEqual(actual, expected)) {
fail(actual, expected, message, "notDeepEqual", assert.notDeepEqual);
}
};
// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);
assert.strictEqual = function strictEqual(actual, expected, message) {
if (actual !== expected) {
fail(actual, expected, message, "===", assert.strictEqual);
}
};
// 10. The strict non-equality assertion tests for strict inequality, as determined by !==.
// assert.notStrictEqual(actual, expected, message_opt);
assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
if (actual === expected) {
fail(actual, expected, message, "!==", assert.notStrictEqual);
}
};
function _throws (shouldThrow, block, err, message) {
var exception = null,
threw = false,
typematters = true;
message = message || "";
//handle optional arguments
if (arguments.length == 3) {
if (typeof(err) == "string") {
message = err;
typematters = false;
}
} else if (arguments.length == 2) {
typematters = false;
}
try {
block();
} catch (e) {
threw = true;
exception = e;
}
if (shouldThrow && !threw) {
fail( "Missing expected exception"
+ (err && err.name ? " ("+err.name+")." : '.')
+ (message ? " " + message : "")
);
}
if (!shouldThrow && threw && typematters && exception instanceof err) {
fail( "Got unwanted exception"
+ (err && err.name ? " ("+err.name+")." : '.')
+ (message ? " " + message : "")
);
}
if ((shouldThrow && threw && typematters && !(exception instanceof err)) ||
(!shouldThrow && threw)) {
throw exception;
}
};
// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);
assert.throws = function(block, /*optional*/error, /*optional*/message) {
_throws.apply(this, [true].concat(pSlice.call(arguments)));
};
// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
_throws.apply(this, [false].concat(pSlice.call(arguments)));
};
assert.ifError = function (err) { if (err) {throw err;}};
})(assert);
(function(exports){
/*!
* Nodeunit
* Copyright (c) 2010 Caolan McMahon
* MIT Licensed
*
* THIS FILE SHOULD BE BROWSER-COMPATIBLE JS!
* Only code on that line will be removed, its mostly to avoid requiring code
* that is node specific
*/
/**
* Module dependencies
*/
/**
* Creates assertion objects representing the result of an assert call.
* Accepts an object or AssertionError as its argument.
*
* @param {object} obj
* @api public
*/
exports.assertion = function (obj) {
return {
method: obj.method || '',
message: obj.message || (obj.error && obj.error.message) || '',
error: obj.error,
passed: function () {
return !this.error;
},
failed: function () {
return Boolean(this.error);
}
};
};
/**
* Creates an assertion list object representing a group of assertions.
* Accepts an array of assertion objects.
*
* @param {Array} arr
* @param {Number} duration
* @api public
*/
exports.assertionList = function (arr, duration) {
var that = arr || [];
that.failures = function () {
var failures = 0;
for (var i=0; i(' +
'' + assertions.failures() + ', ' +
'' + assertions.passes() + ', ' +
assertions.length +
')';
test.className = assertions.failures() ? 'fail': 'pass';
test.appendChild(strong);
var aList = document.createElement('ol');
aList.style.display = 'none';
test.onclick = function () {
var d = aList.style.display;
aList.style.display = (d == 'none') ? 'block': 'none';
};
for (var i=0; i' + (a.error.stack || a.error) + '';
li.className = 'fail';
}
else {
li.innerHTML = a.message || a.method || 'no message';
li.className = 'pass';
}
aList.appendChild(li);
}
test.appendChild(aList);
tests.appendChild(test);
},
done: function (assertions) {
var end = new Date().getTime();
var duration = end - start;
var failures = assertions.failures();
banner.className = failures ? 'fail': 'pass';
result.innerHTML = 'Tests completed in ' + duration +
' milliseconds. ' +
assertions.passes() + ' assertions of ' +
'' + assertions.length + ' passed, ' +
assertions.failures() + ' failed.';
}
});
};
})(reporter);
nodeunit = core;
nodeunit.assert = assert;
nodeunit.reporter = reporter;
nodeunit.run = reporter.run;
return nodeunit; })();
async-0.8.0/lib/ 0000775 0000000 0000000 00000000000 12327742260 0013407 5 ustar 00root root 0000000 0000000 async-0.8.0/lib/async.js 0000775 0000000 0000000 00000077623 12327742260 0015104 0 ustar 00root root 0000000 0000000 /*!
* async
* https://github.com/caolan/async
*
* Copyright 2010-2014 Caolan McMahon
* Released under the MIT license
*/
/*jshint onevar: false, indent:4 */
/*global setImmediate: false, setTimeout: false, console: false */
(function () {
var async = {};
// global on the server, window in the browser
var root, previous_async;
root = this;
if (root != null) {
previous_async = root.async;
}
async.noConflict = function () {
root.async = previous_async;
return async;
};
function only_once(fn) {
var called = false;
return function() {
if (called) throw new Error("Callback was already called.");
called = true;
fn.apply(root, arguments);
}
}
//// cross-browser compatiblity functions ////
var _toString = Object.prototype.toString;
var _isArray = Array.isArray || function (obj) {
return _toString.call(obj) === '[object Array]';
};
var _each = function (arr, iterator) {
if (arr.forEach) {
return arr.forEach(iterator);
}
for (var i = 0; i < arr.length; i += 1) {
iterator(arr[i], i, arr);
}
};
var _map = function (arr, iterator) {
if (arr.map) {
return arr.map(iterator);
}
var results = [];
_each(arr, function (x, i, a) {
results.push(iterator(x, i, a));
});
return results;
};
var _reduce = function (arr, iterator, memo) {
if (arr.reduce) {
return arr.reduce(iterator, memo);
}
_each(arr, function (x, i, a) {
memo = iterator(memo, x, i, a);
});
return memo;
};
var _keys = function (obj) {
if (Object.keys) {
return Object.keys(obj);
}
var keys = [];
for (var k in obj) {
if (obj.hasOwnProperty(k)) {
keys.push(k);
}
}
return keys;
};
//// exported async module functions ////
//// nextTick implementation with browser-compatible fallback ////
if (typeof process === 'undefined' || !(process.nextTick)) {
if (typeof setImmediate === 'function') {
async.nextTick = function (fn) {
// not a direct alias for IE10 compatibility
setImmediate(fn);
};
async.setImmediate = async.nextTick;
}
else {
async.nextTick = function (fn) {
setTimeout(fn, 0);
};
async.setImmediate = async.nextTick;
}
}
else {
async.nextTick = process.nextTick;
if (typeof setImmediate !== 'undefined') {
async.setImmediate = function (fn) {
// not a direct alias for IE10 compatibility
setImmediate(fn);
};
}
else {
async.setImmediate = async.nextTick;
}
}
async.each = function (arr, iterator, callback) {
callback = callback || function () {};
if (!arr.length) {
return callback();
}
var completed = 0;
_each(arr, function (x) {
iterator(x, only_once(done) );
});
function done(err) {
if (err) {
callback(err);
callback = function () {};
}
else {
completed += 1;
if (completed >= arr.length) {
callback();
}
}
}
};
async.forEach = async.each;
async.eachSeries = function (arr, iterator, callback) {
callback = callback || function () {};
if (!arr.length) {
return callback();
}
var completed = 0;
var iterate = function () {
iterator(arr[completed], function (err) {
if (err) {
callback(err);
callback = function () {};
}
else {
completed += 1;
if (completed >= arr.length) {
callback();
}
else {
iterate();
}
}
});
};
iterate();
};
async.forEachSeries = async.eachSeries;
async.eachLimit = function (arr, limit, iterator, callback) {
var fn = _eachLimit(limit);
fn.apply(null, [arr, iterator, callback]);
};
async.forEachLimit = async.eachLimit;
var _eachLimit = function (limit) {
return function (arr, iterator, callback) {
callback = callback || function () {};
if (!arr.length || limit <= 0) {
return callback();
}
var completed = 0;
var started = 0;
var running = 0;
(function replenish () {
if (completed >= arr.length) {
return callback();
}
while (running < limit && started < arr.length) {
started += 1;
running += 1;
iterator(arr[started - 1], function (err) {
if (err) {
callback(err);
callback = function () {};
}
else {
completed += 1;
running -= 1;
if (completed >= arr.length) {
callback();
}
else {
replenish();
}
}
});
}
})();
};
};
var doParallel = function (fn) {
return function () {
var args = Array.prototype.slice.call(arguments);
return fn.apply(null, [async.each].concat(args));
};
};
var doParallelLimit = function(limit, fn) {
return function () {
var args = Array.prototype.slice.call(arguments);
return fn.apply(null, [_eachLimit(limit)].concat(args));
};
};
var doSeries = function (fn) {
return function () {
var args = Array.prototype.slice.call(arguments);
return fn.apply(null, [async.eachSeries].concat(args));
};
};
var _asyncMap = function (eachfn, arr, iterator, callback) {
arr = _map(arr, function (x, i) {
return {index: i, value: x};
});
if (!callback) {
eachfn(arr, function (x, callback) {
iterator(x.value, function (err) {
callback(err);
});
});
} else {
var results = [];
eachfn(arr, function (x, callback) {
iterator(x.value, function (err, v) {
results[x.index] = v;
callback(err);
});
}, function (err) {
callback(err, results);
});
}
};
async.map = doParallel(_asyncMap);
async.mapSeries = doSeries(_asyncMap);
async.mapLimit = function (arr, limit, iterator, callback) {
return _mapLimit(limit)(arr, iterator, callback);
};
var _mapLimit = function(limit) {
return doParallelLimit(limit, _asyncMap);
};
// reduce only has a series version, as doing reduce in parallel won't
// work in many situations.
async.reduce = function (arr, memo, iterator, callback) {
async.eachSeries(arr, function (x, callback) {
iterator(memo, x, function (err, v) {
memo = v;
callback(err);
});
}, function (err) {
callback(err, memo);
});
};
// inject alias
async.inject = async.reduce;
// foldl alias
async.foldl = async.reduce;
async.reduceRight = function (arr, memo, iterator, callback) {
var reversed = _map(arr, function (x) {
return x;
}).reverse();
async.reduce(reversed, memo, iterator, callback);
};
// foldr alias
async.foldr = async.reduceRight;
var _filter = function (eachfn, arr, iterator, callback) {
var results = [];
arr = _map(arr, function (x, i) {
return {index: i, value: x};
});
eachfn(arr, function (x, callback) {
iterator(x.value, function (v) {
if (v) {
results.push(x);
}
callback();
});
}, function (err) {
callback(_map(results.sort(function (a, b) {
return a.index - b.index;
}), function (x) {
return x.value;
}));
});
};
async.filter = doParallel(_filter);
async.filterSeries = doSeries(_filter);
// select alias
async.select = async.filter;
async.selectSeries = async.filterSeries;
var _reject = function (eachfn, arr, iterator, callback) {
var results = [];
arr = _map(arr, function (x, i) {
return {index: i, value: x};
});
eachfn(arr, function (x, callback) {
iterator(x.value, function (v) {
if (!v) {
results.push(x);
}
callback();
});
}, function (err) {
callback(_map(results.sort(function (a, b) {
return a.index - b.index;
}), function (x) {
return x.value;
}));
});
};
async.reject = doParallel(_reject);
async.rejectSeries = doSeries(_reject);
var _detect = function (eachfn, arr, iterator, main_callback) {
eachfn(arr, function (x, callback) {
iterator(x, function (result) {
if (result) {
main_callback(x);
main_callback = function () {};
}
else {
callback();
}
});
}, function (err) {
main_callback();
});
};
async.detect = doParallel(_detect);
async.detectSeries = doSeries(_detect);
async.some = function (arr, iterator, main_callback) {
async.each(arr, function (x, callback) {
iterator(x, function (v) {
if (v) {
main_callback(true);
main_callback = function () {};
}
callback();
});
}, function (err) {
main_callback(false);
});
};
// any alias
async.any = async.some;
async.every = function (arr, iterator, main_callback) {
async.each(arr, function (x, callback) {
iterator(x, function (v) {
if (!v) {
main_callback(false);
main_callback = function () {};
}
callback();
});
}, function (err) {
main_callback(true);
});
};
// all alias
async.all = async.every;
async.sortBy = function (arr, iterator, callback) {
async.map(arr, function (x, callback) {
iterator(x, function (err, criteria) {
if (err) {
callback(err);
}
else {
callback(null, {value: x, criteria: criteria});
}
});
}, function (err, results) {
if (err) {
return callback(err);
}
else {
var fn = function (left, right) {
var a = left.criteria, b = right.criteria;
return a < b ? -1 : a > b ? 1 : 0;
};
callback(null, _map(results.sort(fn), function (x) {
return x.value;
}));
}
});
};
async.auto = function (tasks, callback) {
callback = callback || function () {};
var keys = _keys(tasks);
var remainingTasks = keys.length
if (!remainingTasks) {
return callback();
}
var results = {};
var listeners = [];
var addListener = function (fn) {
listeners.unshift(fn);
};
var removeListener = function (fn) {
for (var i = 0; i < listeners.length; i += 1) {
if (listeners[i] === fn) {
listeners.splice(i, 1);
return;
}
}
};
var taskComplete = function () {
remainingTasks--
_each(listeners.slice(0), function (fn) {
fn();
});
};
addListener(function () {
if (!remainingTasks) {
var theCallback = callback;
// prevent final callback from calling itself if it errors
callback = function () {};
theCallback(null, results);
}
});
_each(keys, function (k) {
var task = _isArray(tasks[k]) ? tasks[k]: [tasks[k]];
var taskCallback = function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
if (err) {
var safeResults = {};
_each(_keys(results), function(rkey) {
safeResults[rkey] = results[rkey];
});
safeResults[k] = args;
callback(err, safeResults);
// stop subsequent errors hitting callback multiple times
callback = function () {};
}
else {
results[k] = args;
async.setImmediate(taskComplete);
}
};
var requires = task.slice(0, Math.abs(task.length - 1)) || [];
var ready = function () {
return _reduce(requires, function (a, x) {
return (a && results.hasOwnProperty(x));
}, true) && !results.hasOwnProperty(k);
};
if (ready()) {
task[task.length - 1](taskCallback, results);
}
else {
var listener = function () {
if (ready()) {
removeListener(listener);
task[task.length - 1](taskCallback, results);
}
};
addListener(listener);
}
});
};
async.retry = function(times, task, callback) {
var DEFAULT_TIMES = 5;
var attempts = [];
// Use defaults if times not passed
if (typeof times === 'function') {
callback = task;
task = times;
times = DEFAULT_TIMES;
}
// Make sure times is a number
times = parseInt(times, 10) || DEFAULT_TIMES;
var wrappedTask = function(wrappedCallback, wrappedResults) {
var retryAttempt = function(task, finalAttempt) {
return function(seriesCallback) {
task(function(err, result){
seriesCallback(!err || finalAttempt, {err: err, result: result});
}, wrappedResults);
};
};
while (times) {
attempts.push(retryAttempt(task, !(times-=1)));
}
async.series(attempts, function(done, data){
data = data[data.length - 1];
(wrappedCallback || callback)(data.err, data.result);
});
}
// If a callback is passed, run this as a controll flow
return callback ? wrappedTask() : wrappedTask
};
async.waterfall = function (tasks, callback) {
callback = callback || function () {};
if (!_isArray(tasks)) {
var err = new Error('First argument to waterfall must be an array of functions');
return callback(err);
}
if (!tasks.length) {
return callback();
}
var wrapIterator = function (iterator) {
return function (err) {
if (err) {
callback.apply(null, arguments);
callback = function () {};
}
else {
var args = Array.prototype.slice.call(arguments, 1);
var next = iterator.next();
if (next) {
args.push(wrapIterator(next));
}
else {
args.push(callback);
}
async.setImmediate(function () {
iterator.apply(null, args);
});
}
};
};
wrapIterator(async.iterator(tasks))();
};
var _parallel = function(eachfn, tasks, callback) {
callback = callback || function () {};
if (_isArray(tasks)) {
eachfn.map(tasks, function (fn, callback) {
if (fn) {
fn(function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
callback.call(null, err, args);
});
}
}, callback);
}
else {
var results = {};
eachfn.each(_keys(tasks), function (k, callback) {
tasks[k](function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
results[k] = args;
callback(err);
});
}, function (err) {
callback(err, results);
});
}
};
async.parallel = function (tasks, callback) {
_parallel({ map: async.map, each: async.each }, tasks, callback);
};
async.parallelLimit = function(tasks, limit, callback) {
_parallel({ map: _mapLimit(limit), each: _eachLimit(limit) }, tasks, callback);
};
async.series = function (tasks, callback) {
callback = callback || function () {};
if (_isArray(tasks)) {
async.mapSeries(tasks, function (fn, callback) {
if (fn) {
fn(function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
callback.call(null, err, args);
});
}
}, callback);
}
else {
var results = {};
async.eachSeries(_keys(tasks), function (k, callback) {
tasks[k](function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
results[k] = args;
callback(err);
});
}, function (err) {
callback(err, results);
});
}
};
async.iterator = function (tasks) {
var makeCallback = function (index) {
var fn = function () {
if (tasks.length) {
tasks[index].apply(null, arguments);
}
return fn.next();
};
fn.next = function () {
return (index < tasks.length - 1) ? makeCallback(index + 1): null;
};
return fn;
};
return makeCallback(0);
};
async.apply = function (fn) {
var args = Array.prototype.slice.call(arguments, 1);
return function () {
return fn.apply(
null, args.concat(Array.prototype.slice.call(arguments))
);
};
};
var _concat = function (eachfn, arr, fn, callback) {
var r = [];
eachfn(arr, function (x, cb) {
fn(x, function (err, y) {
r = r.concat(y || []);
cb(err);
});
}, function (err) {
callback(err, r);
});
};
async.concat = doParallel(_concat);
async.concatSeries = doSeries(_concat);
async.whilst = function (test, iterator, callback) {
if (test()) {
iterator(function (err) {
if (err) {
return callback(err);
}
async.whilst(test, iterator, callback);
});
}
else {
callback();
}
};
async.doWhilst = function (iterator, test, callback) {
iterator(function (err) {
if (err) {
return callback(err);
}
var args = Array.prototype.slice.call(arguments, 1);
if (test.apply(null, args)) {
async.doWhilst(iterator, test, callback);
}
else {
callback();
}
});
};
async.until = function (test, iterator, callback) {
if (!test()) {
iterator(function (err) {
if (err) {
return callback(err);
}
async.until(test, iterator, callback);
});
}
else {
callback();
}
};
async.doUntil = function (iterator, test, callback) {
iterator(function (err) {
if (err) {
return callback(err);
}
var args = Array.prototype.slice.call(arguments, 1);
if (!test.apply(null, args)) {
async.doUntil(iterator, test, callback);
}
else {
callback();
}
});
};
async.queue = function (worker, concurrency) {
if (concurrency === undefined) {
concurrency = 1;
}
function _insert(q, data, pos, callback) {
if (!q.started){
q.started = true;
}
if (!_isArray(data)) {
data = [data];
}
if(data.length == 0) {
// call drain immediately if there are no tasks
return async.setImmediate(function() {
if (q.drain) {
q.drain();
}
});
}
_each(data, function(task) {
var item = {
data: task,
callback: typeof callback === 'function' ? callback : null
};
if (pos) {
q.tasks.unshift(item);
} else {
q.tasks.push(item);
}
if (q.saturated && q.tasks.length === q.concurrency) {
q.saturated();
}
async.setImmediate(q.process);
});
}
var workers = 0;
var q = {
tasks: [],
concurrency: concurrency,
saturated: null,
empty: null,
drain: null,
started: false,
paused: false,
push: function (data, callback) {
_insert(q, data, false, callback);
},
kill: function () {
q.drain = null;
q.tasks = [];
},
unshift: function (data, callback) {
_insert(q, data, true, callback);
},
process: function () {
if (!q.paused && workers < q.concurrency && q.tasks.length) {
var task = q.tasks.shift();
if (q.empty && q.tasks.length === 0) {
q.empty();
}
workers += 1;
var next = function () {
workers -= 1;
if (task.callback) {
task.callback.apply(task, arguments);
}
if (q.drain && q.tasks.length + workers === 0) {
q.drain();
}
q.process();
};
var cb = only_once(next);
worker(task.data, cb);
}
},
length: function () {
return q.tasks.length;
},
running: function () {
return workers;
},
idle: function() {
return q.tasks.length + workers === 0;
},
pause: function () {
if (q.paused === true) { return; }
q.paused = true;
q.process();
},
resume: function () {
if (q.paused === false) { return; }
q.paused = false;
q.process();
}
};
return q;
};
async.cargo = function (worker, payload) {
var working = false,
tasks = [];
var cargo = {
tasks: tasks,
payload: payload,
saturated: null,
empty: null,
drain: null,
drained: true,
push: function (data, callback) {
if (!_isArray(data)) {
data = [data];
}
_each(data, function(task) {
tasks.push({
data: task,
callback: typeof callback === 'function' ? callback : null
});
cargo.drained = false;
if (cargo.saturated && tasks.length === payload) {
cargo.saturated();
}
});
async.setImmediate(cargo.process);
},
process: function process() {
if (working) return;
if (tasks.length === 0) {
if(cargo.drain && !cargo.drained) cargo.drain();
cargo.drained = true;
return;
}
var ts = typeof payload === 'number'
? tasks.splice(0, payload)
: tasks.splice(0, tasks.length);
var ds = _map(ts, function (task) {
return task.data;
});
if(cargo.empty) cargo.empty();
working = true;
worker(ds, function () {
working = false;
var args = arguments;
_each(ts, function (data) {
if (data.callback) {
data.callback.apply(null, args);
}
});
process();
});
},
length: function () {
return tasks.length;
},
running: function () {
return working;
}
};
return cargo;
};
var _console_fn = function (name) {
return function (fn) {
var args = Array.prototype.slice.call(arguments, 1);
fn.apply(null, args.concat([function (err) {
var args = Array.prototype.slice.call(arguments, 1);
if (typeof console !== 'undefined') {
if (err) {
if (console.error) {
console.error(err);
}
}
else if (console[name]) {
_each(args, function (x) {
console[name](x);
});
}
}
}]));
};
};
async.log = _console_fn('log');
async.dir = _console_fn('dir');
/*async.info = _console_fn('info');
async.warn = _console_fn('warn');
async.error = _console_fn('error');*/
async.memoize = function (fn, hasher) {
var memo = {};
var queues = {};
hasher = hasher || function (x) {
return x;
};
var memoized = function () {
var args = Array.prototype.slice.call(arguments);
var callback = args.pop();
var key = hasher.apply(null, args);
if (key in memo) {
async.nextTick(function () {
callback.apply(null, memo[key]);
});
}
else if (key in queues) {
queues[key].push(callback);
}
else {
queues[key] = [callback];
fn.apply(null, args.concat([function () {
memo[key] = arguments;
var q = queues[key];
delete queues[key];
for (var i = 0, l = q.length; i < l; i++) {
q[i].apply(null, arguments);
}
}]));
}
};
memoized.memo = memo;
memoized.unmemoized = fn;
return memoized;
};
async.unmemoize = function (fn) {
return function () {
return (fn.unmemoized || fn).apply(null, arguments);
};
};
async.times = function (count, iterator, callback) {
var counter = [];
for (var i = 0; i < count; i++) {
counter.push(i);
}
return async.map(counter, iterator, callback);
};
async.timesSeries = function (count, iterator, callback) {
var counter = [];
for (var i = 0; i < count; i++) {
counter.push(i);
}
return async.mapSeries(counter, iterator, callback);
};
async.seq = function (/* functions... */) {
var fns = arguments;
return function () {
var that = this;
var args = Array.prototype.slice.call(arguments);
var callback = args.pop();
async.reduce(fns, args, function (newargs, fn, cb) {
fn.apply(that, newargs.concat([function () {
var err = arguments[0];
var nextargs = Array.prototype.slice.call(arguments, 1);
cb(err, nextargs);
}]))
},
function (err, results) {
callback.apply(that, [err].concat(results));
});
};
};
async.compose = function (/* functions... */) {
return async.seq.apply(null, Array.prototype.reverse.call(arguments));
};
var _applyEach = function (eachfn, fns /*args...*/) {
var go = function () {
var that = this;
var args = Array.prototype.slice.call(arguments);
var callback = args.pop();
return eachfn(fns, function (fn, cb) {
fn.apply(that, args.concat([cb]));
},
callback);
};
if (arguments.length > 2) {
var args = Array.prototype.slice.call(arguments, 2);
return go.apply(this, args);
}
else {
return go;
}
};
async.applyEach = doParallel(_applyEach);
async.applyEachSeries = doSeries(_applyEach);
async.forever = function (fn, callback) {
function next(err) {
if (err) {
if (callback) {
return callback(err);
}
throw err;
}
fn(next);
}
next();
};
// Node.js
if (typeof module !== 'undefined' && module.exports) {
module.exports = async;
}
// AMD / RequireJS
else if (typeof define !== 'undefined' && define.amd) {
define([], function () {
return async;
});
}
// included directly via