diff options
Diffstat (limited to 'node_modules/@nodelib/fs.walk/out/readers/async.js')
-rw-r--r-- | node_modules/@nodelib/fs.walk/out/readers/async.js | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/node_modules/@nodelib/fs.walk/out/readers/async.js b/node_modules/@nodelib/fs.walk/out/readers/async.js new file mode 100644 index 0000000..ebe8dd5 --- /dev/null +++ b/node_modules/@nodelib/fs.walk/out/readers/async.js @@ -0,0 +1,97 @@ +"use strict"; +Object.defineProperty(exports, "__esModule", { value: true }); +const events_1 = require("events"); +const fsScandir = require("@nodelib/fs.scandir"); +const fastq = require("fastq"); +const common = require("./common"); +const reader_1 = require("./reader"); +class AsyncReader extends reader_1.default { + constructor(_root, _settings) { + super(_root, _settings); + this._settings = _settings; + this._scandir = fsScandir.scandir; + this._emitter = new events_1.EventEmitter(); + this._queue = fastq(this._worker.bind(this), this._settings.concurrency); + this._isFatalError = false; + this._isDestroyed = false; + this._queue.drain = () => { + if (!this._isFatalError) { + this._emitter.emit('end'); + } + }; + } + read() { + this._isFatalError = false; + this._isDestroyed = false; + setImmediate(() => { + this._pushToQueue(this._root, this._settings.basePath); + }); + return this._emitter; + } + get isDestroyed() { + return this._isDestroyed; + } + destroy() { + if (this._isDestroyed) { + throw new Error('The reader is already destroyed'); + } + this._isDestroyed = true; + this._queue.killAndDrain(); + } + onEntry(callback) { + this._emitter.on('entry', callback); + } + onError(callback) { + this._emitter.once('error', callback); + } + onEnd(callback) { + this._emitter.once('end', callback); + } + _pushToQueue(directory, base) { + const queueItem = { directory, base }; + this._queue.push(queueItem, (error) => { + if (error !== null) { + this._handleError(error); + } + }); + } + _worker(item, done) { + this._scandir(item.directory, this._settings.fsScandirSettings, (error, entries) => { + if (error !== null) { + done(error, undefined); + return; + } + for (const entry of entries) { + this._handleEntry(entry, item.base); + } + done(null, undefined); + }); + } + _handleError(error) { + if (this._isDestroyed || !common.isFatalError(this._settings, error)) { + return; + } + this._isFatalError = true; + this._isDestroyed = true; + this._emitter.emit('error', error); + } + _handleEntry(entry, base) { + if (this._isDestroyed || this._isFatalError) { + return; + } + const fullpath = entry.path; + if (base !== undefined) { + entry.path = common.joinPathSegments(base, entry.name, this._settings.pathSegmentSeparator); + } + if (common.isAppliedFilter(this._settings.entryFilter, entry)) { + this._emitEntry(entry); + } + if (entry.dirent.isDirectory() && common.isAppliedFilter(this._settings.deepFilter, entry)) { + this._pushToQueue(fullpath, base === undefined ? undefined : entry.path); + } + } + _emitEntry(entry) { + this._emitter.emit('entry', entry); + } +} +exports.default = AsyncReader; |