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authorDimitri Staessens <dimitri@ouroboros.rocks>2019-10-06 21:37:45 +0200
committerDimitri Staessens <dimitri@ouroboros.rocks>2019-10-06 21:37:45 +0200
commit3c51c3be85bb0d1bdb87ea0d6632f1c256912f27 (patch)
treec7ccc8279b12c4f7bdbbb4270d617e48f51722e4 /node_modules/graceful-fs/graceful-fs.js
parent412c104bebc507bea9c94fd53b5bdc4b64cbfe31 (diff)
downloadwebsite-3c51c3be85bb0d1bdb87ea0d6632f1c256912f27.tar.gz
website-3c51c3be85bb0d1bdb87ea0d6632f1c256912f27.zip
build: Add some required modules for node
Diffstat (limited to 'node_modules/graceful-fs/graceful-fs.js')
-rw-r--r--node_modules/graceful-fs/graceful-fs.js279
1 files changed, 279 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
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--- /dev/null
+++ b/node_modules/graceful-fs/graceful-fs.js
@@ -0,0 +1,279 @@
+var fs = require('fs')
+var polyfills = require('./polyfills.js')
+var legacy = require('./legacy-streams.js')
+var clone = require('./clone.js')
+
+var queue = []
+
+var util = require('util')
+
+function noop () {}
+
+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)
+ }
+
+if (/\bgfs4\b/i.test(process.env.NODE_DEBUG || '')) {
+ process.on('exit', function() {
+ debug(queue)
+ require('assert').equal(queue.length, 0)
+ })
+}
+
+module.exports = patch(clone(fs))
+if (process.env.TEST_GRACEFUL_FS_GLOBAL_PATCH && !fs.__patched) {
+ module.exports = patch(fs)
+ fs.__patched = true;
+}
+
+// Always patch fs.close/closeSync, because we want 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.
+module.exports.close = (function (fs$close) { return function (fd, cb) {
+ return fs$close.call(fs, fd, function (err) {
+ if (!err)
+ retry()
+
+ if (typeof cb === 'function')
+ cb.apply(this, arguments)
+ })
+}})(fs.close)
+
+module.exports.closeSync = (function (fs$closeSync) { return function (fd) {
+ // Note that graceful-fs also retries when fs.closeSync() fails.
+ // Looks like a bug to me, although it's probably a harmless one.
+ var rval = fs$closeSync.apply(fs, arguments)
+ retry()
+ return rval
+}})(fs.closeSync)
+
+// Only patch fs once, otherwise we'll run into a memory leak if
+// graceful-fs is loaded multiple times, such as in test environments that
+// reset the loaded modules between tests.
+// We look for the string `graceful-fs` from the comment above. This
+// way we are not adding any extra properties and it will detect if older
+// versions of graceful-fs are installed.
+if (!/\bgraceful-fs\b/.test(fs.closeSync.toString())) {
+ fs.closeSync = module.exports.closeSync;
+ fs.close = module.exports.close;
+}
+
+function patch (fs) {
+ // Everything that references the open() function needs to be in here
+ polyfills(fs)
+ fs.gracefulify = patch
+ fs.FileReadStream = ReadStream; // Legacy name.
+ fs.FileWriteStream = WriteStream; // Legacy name.
+ 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$open
+ }
+
+ fs.ReadStream = ReadStream
+ fs.WriteStream = WriteStream
+
+ function ReadStream (path, options) {
+ if (this instanceof ReadStream)
+ return fs$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$open () {
+ var that = this
+ open(that.path, that.flags, that.mode, function (err, fd) {
+ if (err) {
+ that.destroy()
+ that.emit('error', err)
+ } else {
+ that.fd = fd
+ that.emit('open', fd)
+ }
+ })
+ }
+
+ function createReadStream (path, options) {
+ return new ReadStream(path, options)
+ }
+
+ function createWriteStream (path, options) {
+ return new WriteStream(path, options)
+ }
+
+ var fs$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])
+ queue.push(elem)
+}
+
+function retry () {
+ var elem = queue.shift()
+ if (elem) {
+ debug('RETRY', elem[0].name, elem[1])
+ elem[0].apply(null, elem[1])
+ }
+}