diff options
Diffstat (limited to 'includes/external/signal/node_modules/asynckit/lib/streamify.js')
-rw-r--r-- | includes/external/signal/node_modules/asynckit/lib/streamify.js | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/includes/external/signal/node_modules/asynckit/lib/streamify.js b/includes/external/signal/node_modules/asynckit/lib/streamify.js deleted file mode 100644 index f56a1c9..0000000 --- a/includes/external/signal/node_modules/asynckit/lib/streamify.js +++ /dev/null @@ -1,141 +0,0 @@ -var async = require('./async.js'); - -// API -module.exports = { - iterator: wrapIterator, - callback: wrapCallback -}; - -/** - * Wraps iterators with long signature - * - * @this ReadableAsyncKit# - * @param {function} iterator - function to wrap - * @returns {function} - wrapped function - */ -function wrapIterator(iterator) -{ - var stream = this; - - return function(item, key, cb) - { - var aborter - , wrappedCb = async(wrapIteratorCallback.call(stream, cb, key)) - ; - - stream.jobs[key] = wrappedCb; - - // it's either shortcut (item, cb) - if (iterator.length == 2) - { - aborter = iterator(item, wrappedCb); - } - // or long format (item, key, cb) - else - { - aborter = iterator(item, key, wrappedCb); - } - - return aborter; - }; -} - -/** - * Wraps provided callback function - * allowing to execute snitch function before - * real callback - * - * @this ReadableAsyncKit# - * @param {function} callback - function to wrap - * @returns {function} - wrapped function - */ -function wrapCallback(callback) -{ - var stream = this; - - var wrapped = function(error, result) - { - return finisher.call(stream, error, result, callback); - }; - - return wrapped; -} - -/** - * Wraps provided iterator callback function - * makes sure snitch only called once, - * but passes secondary calls to the original callback - * - * @this ReadableAsyncKit# - * @param {function} callback - callback to wrap - * @param {number|string} key - iteration key - * @returns {function} wrapped callback - */ -function wrapIteratorCallback(callback, key) -{ - var stream = this; - - return function(error, output) - { - // don't repeat yourself - if (!(key in stream.jobs)) - { - callback(error, output); - return; - } - - // clean up jobs - delete stream.jobs[key]; - - return streamer.call(stream, error, {key: key, value: output}, callback); - }; -} - -/** - * Stream wrapper for iterator callback - * - * @this ReadableAsyncKit# - * @param {mixed} error - error response - * @param {mixed} output - iterator output - * @param {function} callback - callback that expects iterator results - */ -function streamer(error, output, callback) -{ - if (error && !this.error) - { - this.error = error; - this.pause(); - this.emit('error', error); - // send back value only, as expected - callback(error, output && output.value); - return; - } - - // stream stuff - this.push(output); - - // back to original track - // send back value only, as expected - callback(error, output && output.value); -} - -/** - * Stream wrapper for finishing callback - * - * @this ReadableAsyncKit# - * @param {mixed} error - error response - * @param {mixed} output - iterator output - * @param {function} callback - callback that expects final results - */ -function finisher(error, output, callback) -{ - // signal end of the stream - // only for successfully finished streams - if (!error) - { - this.push(null); - } - - // back to original track - callback(error, output); -} |