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author | LinuxWizard42 <computerwizard@linuxmail.org> | 2022-10-12 22:54:37 +0300 |
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committer | LinuxWizard42 <computerwizard@linuxmail.org> | 2022-10-12 22:54:37 +0300 |
commit | 703e03aba33f234712206769f57717ba7d92d23d (patch) | |
tree | 0041f04ccb75bd5379c764e9fe42249fffe75fc3 /node_modules/graceful-fs/graceful-fs.js | |
parent | ab6e257e6e9d9a483d7e86f220d8b209a2cd7753 (diff) | |
download | FlashRunner-703e03aba33f234712206769f57717ba7d92d23d.tar.gz FlashRunner-703e03aba33f234712206769f57717ba7d92d23d.tar.zst |
Added export_allowed file to make repository visible in cgit
Diffstat (limited to 'node_modules/graceful-fs/graceful-fs.js')
-rw-r--r-- | node_modules/graceful-fs/graceful-fs.js | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/node_modules/graceful-fs/graceful-fs.js b/node_modules/graceful-fs/graceful-fs.js new file mode 100644 index 0000000..de3df47 --- /dev/null +++ b/node_modules/graceful-fs/graceful-fs.js @@ -0,0 +1,354 @@ +var fs = require('fs') +var polyfills = require('./polyfills.js') +var legacy = require('./legacy-streams.js') +var clone = require('./clone.js') + +var util = require('util') + +/* istanbul ignore next - node 0.x polyfill */ +var gracefulQueue +var previousSymbol + +/* istanbul ignore else - node 0.x polyfill */ +if (typeof Symbol === 'function' && typeof Symbol.for === 'function') { + gracefulQueue = Symbol.for('graceful-fs.queue') + // This is used in testing by future versions + previousSymbol = Symbol.for('graceful-fs.previous') +} else { + gracefulQueue = '___graceful-fs.queue' + previousSymbol = '___graceful-fs.previous' +} + +function noop () {} + +function publishQueue(context, queue) { + Object.defineProperty(context, gracefulQueue, { + get: function() { + return queue + } + }) +} + +var debug = noop +if (util.debuglog) + debug = util.debuglog('gfs4') +else if (/\bgfs4\b/i.test(process.env.NODE_DEBUG || '')) + debug = function() { + var m = util.format.apply(util, arguments) + m = 'GFS4: ' + m.split(/\n/).join('\nGFS4: ') + console.error(m) + } + +// Once time initialization +if (!fs[gracefulQueue]) { + // This queue can be shared by multiple loaded instances + var queue = global[gracefulQueue] || [] + publishQueue(fs, queue) + + // Patch fs.close/closeSync to shared queue version, because we need + // to retry() whenever a close happens *anywhere* in the program. + // This is essential when multiple graceful-fs instances are + // in play at the same time. + fs.close = (function (fs$close) { + function close (fd, cb) { + return fs$close.call(fs, fd, function (err) { + // This function uses the graceful-fs shared queue + if (!err) { + retry() + } + + if (typeof cb === 'function') + cb.apply(this, arguments) + }) + } + + Object.defineProperty(close, previousSymbol, { + value: fs$close + }) + return close + })(fs.close) + + fs.closeSync = (function (fs$closeSync) { + function closeSync (fd) { + // This function uses the graceful-fs shared queue + fs$closeSync.apply(fs, arguments) + retry() + } + + Object.defineProperty(closeSync, previousSymbol, { + value: fs$closeSync + }) + return closeSync + })(fs.closeSync) + + if (/\bgfs4\b/i.test(process.env.NODE_DEBUG || '')) { + process.on('exit', function() { + debug(fs[gracefulQueue]) + require('assert').equal(fs[gracefulQueue].length, 0) + }) + } +} + +if (!global[gracefulQueue]) { + publishQueue(global, fs[gracefulQueue]); +} + +module.exports = patch(clone(fs)) +if (process.env.TEST_GRACEFUL_FS_GLOBAL_PATCH && !fs.__patched) { + module.exports = patch(fs) + fs.__patched = true; +} + +function patch (fs) { + // Everything that references the open() function needs to be in here + polyfills(fs) + fs.gracefulify = patch + + fs.createReadStream = createReadStream + fs.createWriteStream = createWriteStream + var fs$readFile = fs.readFile + fs.readFile = readFile + function readFile (path, options, cb) { + if (typeof options === 'function') + cb = options, options = null + + return go$readFile(path, options, cb) + + function go$readFile (path, options, cb) { + return fs$readFile(path, options, function (err) { + if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) + enqueue([go$readFile, [path, options, cb]]) + else { + if (typeof cb === 'function') + cb.apply(this, arguments) + retry() + } + }) + } + } + + var fs$writeFile = fs.writeFile + fs.writeFile = writeFile + function writeFile (path, data, options, cb) { + if (typeof options === 'function') + cb = options, options = null + + return go$writeFile(path, data, options, cb) + + function go$writeFile (path, data, options, cb) { + return fs$writeFile(path, data, options, function (err) { + if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) + enqueue([go$writeFile, [path, data, options, cb]]) + else { + if (typeof cb === 'function') + cb.apply(this, arguments) + retry() + } + }) + } + } + + var fs$appendFile = fs.appendFile + if (fs$appendFile) + fs.appendFile = appendFile + function appendFile (path, data, options, cb) { + if (typeof options === 'function') + cb = options, options = null + + return go$appendFile(path, data, options, cb) + + function go$appendFile (path, data, options, cb) { + return fs$appendFile(path, data, options, function (err) { + if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) + enqueue([go$appendFile, [path, data, options, cb]]) + else { + if (typeof cb === 'function') + cb.apply(this, arguments) + retry() + } + }) + } + } + + var fs$readdir = fs.readdir + fs.readdir = readdir + function readdir (path, options, cb) { + var args = [path] + if (typeof options !== 'function') { + args.push(options) + } else { + cb = options + } + args.push(go$readdir$cb) + + return go$readdir(args) + + function go$readdir$cb (err, files) { + if (files && files.sort) + files.sort() + + if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) + enqueue([go$readdir, [args]]) + + else { + if (typeof cb === 'function') + cb.apply(this, arguments) + retry() + } + } + } + + function go$readdir (args) { + return fs$readdir.apply(fs, args) + } + + if (process.version.substr(0, 4) === 'v0.8') { + var legStreams = legacy(fs) + ReadStream = legStreams.ReadStream + WriteStream = legStreams.WriteStream + } + + var fs$ReadStream = fs.ReadStream + if (fs$ReadStream) { + ReadStream.prototype = Object.create(fs$ReadStream.prototype) + ReadStream.prototype.open = ReadStream$open + } + + var fs$WriteStream = fs.WriteStream + if (fs$WriteStream) { + WriteStream.prototype = Object.create(fs$WriteStream.prototype) + WriteStream.prototype.open = WriteStream$open + } + + Object.defineProperty(fs, 'ReadStream', { + get: function () { + return ReadStream + }, + set: function (val) { + ReadStream = val + }, + enumerable: true, + configurable: true + }) + Object.defineProperty(fs, 'WriteStream', { + get: function () { + return WriteStream + }, + set: function (val) { + WriteStream = val + }, + enumerable: true, + configurable: true + }) + + // legacy names + var FileReadStream = ReadStream + Object.defineProperty(fs, 'FileReadStream', { + get: function () { + return FileReadStream + }, + set: function (val) { + FileReadStream = val + }, + enumerable: true, + configurable: true + }) + var FileWriteStream = WriteStream + Object.defineProperty(fs, 'FileWriteStream', { + get: function () { + return FileWriteStream + }, + set: function (val) { + FileWriteStream = val + }, + enumerable: true, + configurable: true + }) + + function ReadStream (path, options) { + if (this instanceof ReadStream) + return fs$ReadStream.apply(this, arguments), this + else + return ReadStream.apply(Object.create(ReadStream.prototype), arguments) + } + + function ReadStream$open () { + var that = this + open(that.path, that.flags, that.mode, function (err, fd) { + if (err) { + if (that.autoClose) + that.destroy() + + that.emit('error', err) + } else { + that.fd = fd + that.emit('open', fd) + that.read() + } + }) + } + + function WriteStream (path, options) { + if (this instanceof WriteStream) + return fs$WriteStream.apply(this, arguments), this + else + return WriteStream.apply(Object.create(WriteStream.prototype), arguments) + } + + function WriteStream$open () { + var that = this + open(that.path, that.flags, that.mode, function (err, fd) { + if (err) { + that.destroy() + that.emit('error', err) + } else { + that.fd = fd + that.emit('open', fd) + } + }) + } + + function createReadStream (path, options) { + return new fs.ReadStream(path, options) + } + + function createWriteStream (path, options) { + return new fs.WriteStream(path, options) + } + + var fs$open = fs.open + fs.open = open + function open (path, flags, mode, cb) { + if (typeof mode === 'function') + cb = mode, mode = null + + return go$open(path, flags, mode, cb) + + function go$open (path, flags, mode, cb) { + return fs$open(path, flags, mode, function (err, fd) { + if (err && (err.code === 'EMFILE' || err.code === 'ENFILE')) + enqueue([go$open, [path, flags, mode, cb]]) + else { + if (typeof cb === 'function') + cb.apply(this, arguments) + retry() + } + }) + } + } + + return fs +} + +function enqueue (elem) { + debug('ENQUEUE', elem[0].name, elem[1]) + fs[gracefulQueue].push(elem) +} + +function retry () { + var elem = fs[gracefulQueue].shift() + if (elem) { + debug('RETRY', elem[0].name, elem[1]) + elem[0].apply(null, elem[1]) + } +} |