pax_global_header 0000666 0000000 0000000 00000000064 12106021045 0014501 g ustar 00root root 0000000 0000000 52 comment=847929ccd566fc8c57ed6743f279d6bc90e75366
async-0.2.5/ 0000775 0000000 0000000 00000000000 12106021045 0012622 5 ustar 00root root 0000000 0000000 async-0.2.5/.gitignore 0000664 0000000 0000000 00000000024 12106021045 0014606 0 ustar 00root root 0000000 0000000 /node_modules
/dist
async-0.2.5/.gitmodules 0000664 0000000 0000000 00000000433 12106021045 0014777 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-0.2.5/.npmignore 0000664 0000000 0000000 00000000074 12106021045 0014622 0 ustar 00root root 0000000 0000000 deps
dist
test
nodelint.cfg
.npmignore
.gitmodules
Makefile
async-0.2.5/LICENSE 0000664 0000000 0000000 00000002042 12106021045 0013625 0 ustar 00root root 0000000 0000000 Copyright (c) 2010 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-0.2.5/Makefile 0000664 0000000 0000000 00000001036 12106021045 0014262 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-0.2.5/README.md 0000664 0000000 0000000 00000113034 12106021045 0014103 0 ustar 00root root 0000000 0000000 # Async.js
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.
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'], path.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.
## Download
Releases are available for download from
[GitHub](http://github.com/caolan/async/downloads).
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) - 17.5kb Uncompressed
__Production:__ [async.min.js](https://github.com/caolan/async/raw/master/dist/async.min.js) - 1.7kb Packed and Gzipped
## In the Browser
So far its been tested in IE6, IE7, IE8, FF3.6 and Chrome 5. Usage:
```html
```
## Documentation
### Collections
* [each](#each)
* [map](#map)
* [filter](#filter)
* [reject](#reject)
* [reduce](#reduce)
* [detect](#detect)
* [sortBy](#sortBy)
* [some](#some)
* [every](#every)
* [concat](#concat)
### Control Flow
* [series](#series)
* [parallel](#parallel)
* [whilst](#whilst)
* [doWhilst](#doWhilst)
* [until](#until)
* [doUntil](#doUntil)
* [waterfall](#waterfall)
* [compose](#compose)
* [queue](#queue)
* [cargo](#cargo)
* [auto](#auto)
* [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 an iterator function to each item in an array, 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 this callback, the main
callback for the each 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.
__Arguments__
* arr - An array to iterate over.
* iterator(item, callback) - A function to apply to each item in the array.
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 after all the iterator functions
have finished, or an error has occurred.
__Example__
```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
});
```
---------------------------------------
### eachSeries(arr, iterator, callback)
The same as each only the iterator is applied to each item in the array in
series. The next iterator is only called once the current one has completed
processing. This means the iterator functions will complete in order.
---------------------------------------
### eachLimit(arr, limit, iterator, callback)
The same as each only no more than "limit" iterators 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 iterators to run at any time.
* iterator(item, callback) - A function to apply to each item in the array.
The iterator is passed a callback 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 after all the iterator functions
have finished, or an error has occurred.
__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 the given array through
the iterator function. The iterator is called with an item from the array and a
callback for when it has finished processing. The callback takes 2 arguments,
an error and the transformed item from the array. If the 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 array.
__Arguments__
* arr - An array to iterate over.
* iterator(item, callback) - A function to apply to each item in the array.
The iterator is passed a callback 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 after all the iterator
functions have finished, or an error has occurred. Results is an array of the
transformed items from the original array.
__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 only the iterator is applied to each item in the array in
series. The next iterator is only called once the current one has completed
processing. The results array will be in the same order as the original.
---------------------------------------
### mapLimit(arr, limit, iterator, callback)
The same as map only no more than "limit" iterators 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 iterators to run at any time.
* iterator(item, callback) - A function to apply to each item in the array.
The iterator is passed a callback 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, results) - A callback which is called after all the iterator
functions have finished, or an error has occurred. Results is an array of the
transformed items from the original array.
__Example__
```js
async.map(['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 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 path.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 the array.
The iterator is passed a callback 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'], path.exists, function(results){
// results now equals an array of the existing files
});
```
---------------------------------------
### filterSeries(arr, iterator, callback)
__alias:__ selectSeries
The same as filter only the iterator is applied to each item in the array in
series. The next iterator is only called once the current one has completed
processing. The results array will be in the same order as the original.
---------------------------------------
### reject(arr, iterator, callback)
The opposite of filter. Removes values that pass an async truth test.
---------------------------------------
### rejectSeries(arr, iterator, callback)
The same as reject, only the iterator is applied to each item in the array
in series.
---------------------------------------
### reduce(arr, memo, iterator, callback)
__aliases:__ inject, foldl
Reduces a list of values 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, 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 its 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 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, only operates on the items in the array in reverse order.
---------------------------------------
### detect(arr, iterator, callback)
Returns the first value in a list 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 array (in terms of order) that passes the test.
If order within the original array is important then look at detectSeries.
__Arguments__
* arr - An array to iterate over.
* iterator(item, callback) - A truth test to apply to each item in the array.
The iterator is passed a callback 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'], path.exists, function(result){
// result now equals the first file in the list that exists
});
```
---------------------------------------
### detectSeries(arr, iterator, callback)
The same as detect, only the iterator is applied to each item in the array
in series. This means the result is always the first in the original array (in
terms of array order) that passes the truth test.
---------------------------------------
### sortBy(arr, iterator, callback)
Sorts a list by the results of running each value through an async iterator.
__Arguments__
* arr - An array to iterate over.
* iterator(item, callback) - A function to apply to each item in the array.
The iterator is passed a callback 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 has occurred. Results is the items from
the original array 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
});
```
---------------------------------------
### some(arr, iterator, callback)
__Alias:__ any
Returns true if at least one element in the array 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 path.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.
The iterator is passed a callback 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'], path.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 the array 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 path.exists.
__Arguments__
* arr - An array to iterate over.
* iterator(item, callback) - A truth test to apply to each item in the array.
The iterator is passed a callback 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'], path.exists, function(result){
// if result is true then every file exists
});
```
---------------------------------------
### concat(arr, iterator, callback)
Applies an iterator to each item in a list, concatenating the results. Returns the
concatenated list. The iterators 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 the arguments passed to the iterator function.
__Arguments__
* arr - An array to iterate over
* iterator(item, callback) - A function to apply to each item in the array.
The iterator is passed a callback 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 has occurred. 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 async.concat, but executes in series instead of parallel.
## Control Flow
### series(tasks, [callback])
Run an array of functions 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 the callback for the series 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
async.series.
__Arguments__
* tasks - An array or object containing functions to run, each function is passed
a callback it must call on completion.
* callback(err, results) - An optional callback to run once all the functions
have completed. This function gets an array of all the arguments passed to
the callbacks used in the array.
__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 an 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
async.parallel.
__Arguments__
* tasks - An array or object containing functions to run, each function is passed a
callback it must call on completion.
* callback(err, results) - An optional callback to run once all the functions
have completed. This function gets an array of all the arguments passed to
the callbacks used in the array.
__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 only the 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 it must call on completion.
* 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 an array of all the arguments passed to
the callbacks used in the array.
---------------------------------------
### whilst(test, fn, callback)
Repeatedly call fn, while test returns true. Calls the callback when stopped,
or an error occurs.
__Arguments__
* test() - synchronous truth test to perform before each execution of fn.
* fn(callback) - A function to call each time the test passes. The function is
passed a callback which must be called once it has completed with an optional
error as the first 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. To reflect the difference in the order of operations `test` and `fn` arguments 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 the callback when stopped,
or an error occurs.
The inverse of async.whilst.
---------------------------------------
### doUntil(fn, test, callback)
Like doWhilst except the test is inverted. Note the argument ordering differs from `until`.
---------------------------------------
### waterfall(tasks, [callback])
Runs an array of functions in series, each passing their results to the next in
the array. However, if any of the functions pass an error to the 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 it
must call on completion.
* 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){
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
});
```
---------------------------------------
### queue(worker, concurrency)
Creates a queue object with the specified concurrency. Tasks added to the
queue will be processed in parallel (up to the concurrency limit). If all
workers are in progress, the task is queued until one is available. Once
a worker has completed a task, the task's callback is called.
__Arguments__
* worker(task, callback) - An asynchronous function for processing a queued
task.
* 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.
* 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, 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.
* 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 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 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 is available. Once
the worker has completed some tasks, each callback of those tasks is called.
__Arguments__
* worker(tasks, callback) - An asynchronous function for processing queued
tasks.
* payload - An optional integer for determining how many tasks should be
process per round, 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]) - add a new 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 (task, callback) {
console.log('hello ' + task.name);
callback();
}, 2);
// add some items
cargo.push({name: 'foo'}, function (err) {
console.log('finished processing foo');
});
cargo.push({name: 'bar'}, function (err) {
console.log('finished processing bar');
});
cargo.push({name: 'baz'}, function (err) {
console.log('finished processing baz');
});
```
---------------------------------------
### auto(tasks, [callback])
Determines the best order for running functions 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, that function will not complete
(so any other functions depending on it will not run) and the main callback
will be called immediately with the error. Functions also receive an object
containing the results of functions which have completed so far.
__Arguments__
* tasks - An object literal containing named functions or an array of
requirements, with the function itself the last item in the array. The key
used for each function or array is used when specifying requirements. The
syntax is easier to understand by looking at the example.
* callback(err, results) - An optional callback which is called when all the
tasks have been completed. The callback will receive an error as an argument
if any tasks pass an error to their callback. If all tasks complete
successfully, it will receive an object containing their results.
__Example__
```js
async.auto({
get_data: function(callback){
// async code to get some data
},
make_folder: function(callback){
// async code to create a directory to store a file in
// this is run at the same time as getting the data
},
write_file: ['get_data', 'make_folder', function(callback){
// 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){
// once the file is written let's email a link to it...
// results.write_file contains the filename returned by write_file.
}]
});
```
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){
// async code to get some data
},
function(callback){
// async code to create a directory to store a file in
// this is run at the same time as getting the data
}
],
function(err, results){
async.series([
function(callback){
// once there is some data and the directory exists,
// write the data to a file in the directory
},
function(callback){
// once the file is written let's email a link to it...
}
]);
});
```
For a complicated series of async tasks using the auto function makes adding
new tasks much easier and makes the code more readable.
---------------------------------------
### iterator(tasks)
Creates an iterator function which calls the next function in the array,
returning a continuation to call the next one after that. Its also possible to
'peek' the next iterator by doing 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, each function is passed a callback it
must call on completion.
__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, a useful
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 the 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 the 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 n times and accumulates results in the same manner
you would use with async.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 only the iterator is applied to each item in the array in
series. The next iterator is only called once the current one has completed
processing. 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 you to proxy and cache results from.
* hasher - an 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 memoized function, reverting it to the original, unmemoized
form. Comes handy in tests.
__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-0.2.5/deps/ 0000775 0000000 0000000 00000000000 12106021045 0013555 5 ustar 00root root 0000000 0000000 async-0.2.5/deps/nodeunit.css 0000664 0000000 0000000 00000002516 12106021045 0016120 0 ustar 00root root 0000000 0000000 /*!
* Styles taken from qunit.css
*/
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h1#nodeunit-header a {
color: white;
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h2#nodeunit-banner {
height: 2em;
border-bottom: 1px solid white;
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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;
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div#nodeunit-testrunner-toolbar {
background: #eee;
border-top: 1px solid black;
padding: 10px;
font-family: 'trebuchet ms', verdana, arial;
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cursor:pointer;
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ol#nodeunit-tests .pass {
color: green;
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margin-left: 1em;
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async-0.2.5/deps/nodeunit.js 0000664 0000000 0000000 00000166335 12106021045 0015756 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-0.2.5/lib/ 0000775 0000000 0000000 00000000000 12106021045 0013370 5 ustar 00root root 0000000 0000000 async-0.2.5/lib/async.js 0000775 0000000 0000000 00000071155 12106021045 0015057 0 ustar 00root root 0000000 0000000 /*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 _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) {
setImmediate(fn);
};
}
else {
async.nextTick = function (fn) {
setTimeout(fn, 0);
};
}
}
else {
async.nextTick = process.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(function (err) {
if (err) {
callback(err);
callback = function () {};
}
else {
completed += 1;
if (completed >= arr.length) {
callback(null);
}
}
}));
});
};
async.forEach = async.each;
async.eachSeries = function (arr, iterator, callback) {
callback = callback || function () {};
if (!arr.length) {
return callback();
}
var completed = 0;
var iterate = function () {
var sync = true;
iterator(arr[completed], function (err) {
if (err) {
callback(err);
callback = function () {};
}
else {
completed += 1;
if (completed >= arr.length) {
callback(null);
}
else {
if (sync) {
async.nextTick(iterate);
}
else {
iterate();
}
}
}
});
sync = false;
};
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) {
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);
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);
if (!keys.length) {
return callback(null);
}
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 () {
_each(listeners.slice(0), function (fn) {
fn();
});
};
addListener(function () {
if (_keys(results).length === keys.length) {
callback(null, results);
callback = function () {};
}
});
_each(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 {
var args = Array.prototype.slice.call(arguments, 1);
if (args.length <= 1) {
args = args[0];
}
results[k] = args;
async.nextTick(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.waterfall = function (tasks, callback) {
callback = callback || function () {};
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.nextTick(function () {
iterator.apply(null, args);
});
}
};
};
wrapIterator(async.iterator(tasks))();
};
var _parallel = function(eachfn, tasks, callback) {
callback = callback || function () {};
if (tasks.constructor === Array) {
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 (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);
});
}
}, 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()) {
var sync = true;
iterator(function (err) {
if (err) {
return callback(err);
}
if (sync) {
async.nextTick(function () {
async.whilst(test, iterator, callback);
});
}
else {
async.whilst(test, iterator, callback);
}
});
sync = false;
}
else {
callback();
}
};
async.doWhilst = function (iterator, test, callback) {
var sync = true;
iterator(function (err) {
if (err) {
return callback(err);
}
if (test()) {
if (sync) {
async.nextTick(function () {
async.doWhilst(iterator, test, callback);
});
}
else {
async.doWhilst(iterator, test, callback);
}
}
else {
callback();
}
});
sync = false;
};
async.until = function (test, iterator, callback) {
if (!test()) {
var sync = true;
iterator(function (err) {
if (err) {
return callback(err);
}
if (sync) {
async.nextTick(function () {
async.until(test, iterator, callback);
});
}
else {
async.until(test, iterator, callback);
}
});
sync = false;
}
else {
callback();
}
};
async.doUntil = function (iterator, test, callback) {
var sync = true;
iterator(function (err) {
if (err) {
return callback(err);
}
if (!test()) {
if (sync) {
async.nextTick(function () {
async.doUntil(iterator, test, callback);
});
}
else {
async.doUntil(iterator, test, callback);
}
}
else {
callback();
}
});
sync = false;
};
async.queue = function (worker, concurrency) {
function _insert(q, data, pos, callback) {
if(data.constructor !== Array) {
data = [data];
}
_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 === concurrency) {
q.saturated();
}
async.nextTick(q.process);
});
}
var workers = 0;
var q = {
tasks: [],
concurrency: concurrency,
saturated: null,
empty: null,
drain: null,
push: function (data, callback) {
_insert(q, data, false, callback);
},
unshift: function (data, callback) {
_insert(q, data, true, callback);
},
process: function () {
if (workers < q.concurrency && q.tasks.length) {
var task = q.tasks.shift();
if (q.empty && q.tasks.length === 0) {
q.empty();
}
workers += 1;
var sync = true;
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(function () {
var cbArgs = arguments;
if (sync) {
async.nextTick(function () {
next.apply(null, cbArgs);
});
} else {
next.apply(null, arguments);
}
});
worker(task.data, cb);
sync = false;
}
},
length: function () {
return q.tasks.length;
},
running: function () {
return workers;
}
};
return q;
};
async.cargo = function (worker, payload) {
var working = false,
tasks = [];
var cargo = {
tasks: tasks,
payload: payload,
saturated: null,
empty: null,
drain: null,
push: function (data, callback) {
if(data.constructor !== Array) {
data = [data];
}
_each(data, function(task) {
tasks.push({
data: task,
callback: typeof callback === 'function' ? callback : null
});
if (cargo.saturated && tasks.length === payload) {
cargo.saturated();
}
});
async.nextTick(cargo.process);
},
process: function process() {
if (working) return;
if (tasks.length === 0) {
if(cargo.drain) cargo.drain();
return;
}
var ts = typeof payload === 'number'
? tasks.splice(0, payload)
: tasks.splice(0);
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) {
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.compose = function (/* functions... */) {
var fns = Array.prototype.reverse.call(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));
});
};
};
// AMD / RequireJS
if (typeof define !== 'undefined' && define.amd) {
define([], function () {
return async;
});
}
// Node.js
else if (typeof module !== 'undefined' && module.exports) {
module.exports = async;
}
// included directly via