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codeql-action/node_modules/@nodelib/fs.walk/out/readers/async.js
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"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; |