mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-27 12:07:19 +00:00
691 lines
20 KiB
JavaScript
691 lines
20 KiB
JavaScript
/*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 ////
|
|
if (typeof process === 'undefined' || !(process.nextTick)) {
|
|
async.nextTick = function (fn) {
|
|
setTimeout(fn, 0);
|
|
};
|
|
}
|
|
else {
|
|
async.nextTick = process.nextTick;
|
|
}
|
|
|
|
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();
|
|
};
|
|
|
|
async.forEachLimit = function (arr, limit, iterator, callback) {
|
|
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) {
|
|
iterator(arr[started], function (err) {
|
|
if (err) {
|
|
callback(err);
|
|
callback = function () {};
|
|
}
|
|
else {
|
|
completed += 1;
|
|
running -= 1;
|
|
if (completed === arr.length) {
|
|
callback();
|
|
}
|
|
else {
|
|
replenish();
|
|
}
|
|
}
|
|
});
|
|
started += 1;
|
|
running += 1;
|
|
}
|
|
})();
|
|
};
|
|
|
|
|
|
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);
|
|
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.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 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 () {
|
|
_forEach(listeners, function (fn) {
|
|
fn();
|
|
});
|
|
};
|
|
|
|
addListener(function () {
|
|
if (_keys(results).length === keys.length) {
|
|
callback(null, results);
|
|
}
|
|
});
|
|
|
|
_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 {
|
|
var args = Array.prototype.slice.call(arguments, 1);
|
|
if (args.length <= 1) {
|
|
args = args[0];
|
|
}
|
|
results[k] = args;
|
|
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);
|
|
};
|
|
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) {
|
|
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);
|
|
});
|
|
}
|
|
}, 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);
|
|
});
|
|
}
|
|
}, 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 q = {
|
|
tasks: [],
|
|
concurrency: concurrency,
|
|
saturated: null,
|
|
empty: null,
|
|
drain: null,
|
|
push: function (data, callback) {
|
|
q.tasks.push({data: data, callback: callback});
|
|
if(q.saturated && q.tasks.length == concurrency) q.saturated();
|
|
async.nextTick(q.process);
|
|
},
|
|
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;
|
|
worker(task.data, function () {
|
|
workers -= 1;
|
|
if (task.callback) {
|
|
task.callback.apply(task, arguments);
|
|
}
|
|
if(q.drain && q.tasks.length + workers == 0) q.drain();
|
|
q.process();
|
|
});
|
|
}
|
|
},
|
|
length: function () {
|
|
return q.tasks.length;
|
|
},
|
|
running: function () {
|
|
return workers;
|
|
}
|
|
};
|
|
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');*/
|
|
|
|
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.unmemoized = fn;
|
|
return memoized;
|
|
};
|
|
|
|
async.unmemoize = function (fn) {
|
|
return function () {
|
|
return (fn.unmemoized || fn).apply(null, arguments);
|
|
}
|
|
};
|
|
|
|
}());
|