Demo for query storing
Change-Id: I947bcac841992c3f6cfd01ab337c265b0d01cb70
diff --git a/node_modules/graceful-fs/LICENSE b/node_modules/graceful-fs/LICENSE
new file mode 100644
index 0000000..9d2c803
--- /dev/null
+++ b/node_modules/graceful-fs/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter, Ben Noordhuis, and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/node_modules/graceful-fs/README.md b/node_modules/graceful-fs/README.md
new file mode 100644
index 0000000..5273a50
--- /dev/null
+++ b/node_modules/graceful-fs/README.md
@@ -0,0 +1,133 @@
+# graceful-fs
+
+graceful-fs functions as a drop-in replacement for the fs module,
+making various improvements.
+
+The improvements are meant to normalize behavior across different
+platforms and environments, and to make filesystem access more
+resilient to errors.
+
+## Improvements over [fs module](https://nodejs.org/api/fs.html)
+
+* Queues up `open` and `readdir` calls, and retries them once
+ something closes if there is an EMFILE error from too many file
+ descriptors.
+* fixes `lchmod` for Node versions prior to 0.6.2.
+* implements `fs.lutimes` if possible. Otherwise it becomes a noop.
+* ignores `EINVAL` and `EPERM` errors in `chown`, `fchown` or
+ `lchown` if the user isn't root.
+* makes `lchmod` and `lchown` become noops, if not available.
+* retries reading a file if `read` results in EAGAIN error.
+
+On Windows, it retries renaming a file for up to one second if `EACCESS`
+or `EPERM` error occurs, likely because antivirus software has locked
+the directory.
+
+## USAGE
+
+```javascript
+// use just like fs
+var fs = require('graceful-fs')
+
+// now go and do stuff with it...
+fs.readFileSync('some-file-or-whatever')
+```
+
+## Global Patching
+
+If you want to patch the global fs module (or any other fs-like
+module) you can do this:
+
+```javascript
+// Make sure to read the caveat below.
+var realFs = require('fs')
+var gracefulFs = require('graceful-fs')
+gracefulFs.gracefulify(realFs)
+```
+
+This should only ever be done at the top-level application layer, in
+order to delay on EMFILE errors from any fs-using dependencies. You
+should **not** do this in a library, because it can cause unexpected
+delays in other parts of the program.
+
+## Changes
+
+This module is fairly stable at this point, and used by a lot of
+things. That being said, because it implements a subtle behavior
+change in a core part of the node API, even modest changes can be
+extremely breaking, and the versioning is thus biased towards
+bumping the major when in doubt.
+
+The main change between major versions has been switching between
+providing a fully-patched `fs` module vs monkey-patching the node core
+builtin, and the approach by which a non-monkey-patched `fs` was
+created.
+
+The goal is to trade `EMFILE` errors for slower fs operations. So, if
+you try to open a zillion files, rather than crashing, `open`
+operations will be queued up and wait for something else to `close`.
+
+There are advantages to each approach. Monkey-patching the fs means
+that no `EMFILE` errors can possibly occur anywhere in your
+application, because everything is using the same core `fs` module,
+which is patched. However, it can also obviously cause undesirable
+side-effects, especially if the module is loaded multiple times.
+
+Implementing a separate-but-identical patched `fs` module is more
+surgical (and doesn't run the risk of patching multiple times), but
+also imposes the challenge of keeping in sync with the core module.
+
+The current approach loads the `fs` module, and then creates a
+lookalike object that has all the same methods, except a few that are
+patched. It is safe to use in all versions of Node from 0.8 through
+7.0.
+
+### v4
+
+* Do not monkey-patch the fs module. This module may now be used as a
+ drop-in dep, and users can opt into monkey-patching the fs builtin
+ if their app requires it.
+
+### v3
+
+* Monkey-patch fs, because the eval approach no longer works on recent
+ node.
+* fixed possible type-error throw if rename fails on windows
+* verify that we *never* get EMFILE errors
+* Ignore ENOSYS from chmod/chown
+* clarify that graceful-fs must be used as a drop-in
+
+### v2.1.0
+
+* Use eval rather than monkey-patching fs.
+* readdir: Always sort the results
+* win32: requeue a file if error has an OK status
+
+### v2.0
+
+* A return to monkey patching
+* wrap process.cwd
+
+### v1.1
+
+* wrap readFile
+* Wrap fs.writeFile.
+* readdir protection
+* Don't clobber the fs builtin
+* Handle fs.read EAGAIN errors by trying again
+* Expose the curOpen counter
+* No-op lchown/lchmod if not implemented
+* fs.rename patch only for win32
+* Patch fs.rename to handle AV software on Windows
+* Close #4 Chown should not fail on einval or eperm if non-root
+* Fix isaacs/fstream#1 Only wrap fs one time
+* Fix #3 Start at 1024 max files, then back off on EMFILE
+* lutimes that doens't blow up on Linux
+* A full on-rewrite using a queue instead of just swallowing the EMFILE error
+* Wrap Read/Write streams as well
+
+### 1.0
+
+* Update engines for node 0.6
+* Be lstat-graceful on Windows
+* first
diff --git a/node_modules/graceful-fs/clone.js b/node_modules/graceful-fs/clone.js
new file mode 100644
index 0000000..028356c
--- /dev/null
+++ b/node_modules/graceful-fs/clone.js
@@ -0,0 +1,19 @@
+'use strict'
+
+module.exports = clone
+
+function clone (obj) {
+ if (obj === null || typeof obj !== 'object')
+ return obj
+
+ if (obj instanceof Object)
+ var copy = { __proto__: obj.__proto__ }
+ else
+ var copy = Object.create(null)
+
+ Object.getOwnPropertyNames(obj).forEach(function (key) {
+ Object.defineProperty(copy, key, Object.getOwnPropertyDescriptor(obj, key))
+ })
+
+ return copy
+}
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])
+ }
+}
diff --git a/node_modules/graceful-fs/legacy-streams.js b/node_modules/graceful-fs/legacy-streams.js
new file mode 100644
index 0000000..d617b50
--- /dev/null
+++ b/node_modules/graceful-fs/legacy-streams.js
@@ -0,0 +1,118 @@
+var Stream = require('stream').Stream
+
+module.exports = legacy
+
+function legacy (fs) {
+ return {
+ ReadStream: ReadStream,
+ WriteStream: WriteStream
+ }
+
+ function ReadStream (path, options) {
+ if (!(this instanceof ReadStream)) return new ReadStream(path, options);
+
+ Stream.call(this);
+
+ var self = this;
+
+ this.path = path;
+ this.fd = null;
+ this.readable = true;
+ this.paused = false;
+
+ this.flags = 'r';
+ this.mode = 438; /*=0666*/
+ this.bufferSize = 64 * 1024;
+
+ options = options || {};
+
+ // Mixin options into this
+ var keys = Object.keys(options);
+ for (var index = 0, length = keys.length; index < length; index++) {
+ var key = keys[index];
+ this[key] = options[key];
+ }
+
+ if (this.encoding) this.setEncoding(this.encoding);
+
+ if (this.start !== undefined) {
+ if ('number' !== typeof this.start) {
+ throw TypeError('start must be a Number');
+ }
+ if (this.end === undefined) {
+ this.end = Infinity;
+ } else if ('number' !== typeof this.end) {
+ throw TypeError('end must be a Number');
+ }
+
+ if (this.start > this.end) {
+ throw new Error('start must be <= end');
+ }
+
+ this.pos = this.start;
+ }
+
+ if (this.fd !== null) {
+ process.nextTick(function() {
+ self._read();
+ });
+ return;
+ }
+
+ fs.open(this.path, this.flags, this.mode, function (err, fd) {
+ if (err) {
+ self.emit('error', err);
+ self.readable = false;
+ return;
+ }
+
+ self.fd = fd;
+ self.emit('open', fd);
+ self._read();
+ })
+ }
+
+ function WriteStream (path, options) {
+ if (!(this instanceof WriteStream)) return new WriteStream(path, options);
+
+ Stream.call(this);
+
+ this.path = path;
+ this.fd = null;
+ this.writable = true;
+
+ this.flags = 'w';
+ this.encoding = 'binary';
+ this.mode = 438; /*=0666*/
+ this.bytesWritten = 0;
+
+ options = options || {};
+
+ // Mixin options into this
+ var keys = Object.keys(options);
+ for (var index = 0, length = keys.length; index < length; index++) {
+ var key = keys[index];
+ this[key] = options[key];
+ }
+
+ if (this.start !== undefined) {
+ if ('number' !== typeof this.start) {
+ throw TypeError('start must be a Number');
+ }
+ if (this.start < 0) {
+ throw new Error('start must be >= zero');
+ }
+
+ this.pos = this.start;
+ }
+
+ this.busy = false;
+ this._queue = [];
+
+ if (this.fd === null) {
+ this._open = fs.open;
+ this._queue.push([this._open, this.path, this.flags, this.mode, undefined]);
+ this.flush();
+ }
+ }
+}
diff --git a/node_modules/graceful-fs/package.json b/node_modules/graceful-fs/package.json
new file mode 100644
index 0000000..bcda4ee
--- /dev/null
+++ b/node_modules/graceful-fs/package.json
@@ -0,0 +1,85 @@
+{
+ "_from": "graceful-fs@^4.1.10",
+ "_id": "graceful-fs@4.2.4",
+ "_inBundle": false,
+ "_integrity": "sha512-WjKPNJF79dtJAVniUlGGWHYGz2jWxT6VhN/4m1NdkbZ2nOsEF+cI1Edgql5zCRhs/VsQYRvrXctxktVXZUkixw==",
+ "_location": "/graceful-fs",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "graceful-fs@^4.1.10",
+ "name": "graceful-fs",
+ "escapedName": "graceful-fs",
+ "rawSpec": "^4.1.10",
+ "saveSpec": null,
+ "fetchSpec": "^4.1.10"
+ },
+ "_requiredBy": [
+ "/decompress",
+ "/fs-mkdirp-stream",
+ "/imagemin",
+ "/load-json-file",
+ "/read-pkg/path-type",
+ "/vinyl-fs",
+ "/vinyl-sourcemap"
+ ],
+ "_resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.4.tgz",
+ "_shasum": "2256bde14d3632958c465ebc96dc467ca07a29fb",
+ "_spec": "graceful-fs@^4.1.10",
+ "_where": "C:\\Users\\marcr\\Desktop\\KorAp\\Git\\Kalamar\\node_modules\\decompress",
+ "bugs": {
+ "url": "https://github.com/isaacs/node-graceful-fs/issues"
+ },
+ "bundleDependencies": false,
+ "dependencies": {},
+ "deprecated": false,
+ "description": "A drop-in replacement for fs, making various improvements.",
+ "devDependencies": {
+ "import-fresh": "^2.0.0",
+ "mkdirp": "^0.5.0",
+ "rimraf": "^2.2.8",
+ "tap": "^12.7.0"
+ },
+ "directories": {
+ "test": "test"
+ },
+ "files": [
+ "fs.js",
+ "graceful-fs.js",
+ "legacy-streams.js",
+ "polyfills.js",
+ "clone.js"
+ ],
+ "homepage": "https://github.com/isaacs/node-graceful-fs#readme",
+ "keywords": [
+ "fs",
+ "module",
+ "reading",
+ "retry",
+ "retries",
+ "queue",
+ "error",
+ "errors",
+ "handling",
+ "EMFILE",
+ "EAGAIN",
+ "EINVAL",
+ "EPERM",
+ "EACCESS"
+ ],
+ "license": "ISC",
+ "main": "graceful-fs.js",
+ "name": "graceful-fs",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/isaacs/node-graceful-fs.git"
+ },
+ "scripts": {
+ "postpublish": "git push origin --follow-tags",
+ "postversion": "npm publish",
+ "preversion": "npm test",
+ "test": "node test.js | tap -"
+ },
+ "version": "4.2.4"
+}
diff --git a/node_modules/graceful-fs/polyfills.js b/node_modules/graceful-fs/polyfills.js
new file mode 100644
index 0000000..a5808d2
--- /dev/null
+++ b/node_modules/graceful-fs/polyfills.js
@@ -0,0 +1,342 @@
+var constants = require('constants')
+
+var origCwd = process.cwd
+var cwd = null
+
+var platform = process.env.GRACEFUL_FS_PLATFORM || process.platform
+
+process.cwd = function() {
+ if (!cwd)
+ cwd = origCwd.call(process)
+ return cwd
+}
+try {
+ process.cwd()
+} catch (er) {}
+
+var chdir = process.chdir
+process.chdir = function(d) {
+ cwd = null
+ chdir.call(process, d)
+}
+
+module.exports = patch
+
+function patch (fs) {
+ // (re-)implement some things that are known busted or missing.
+
+ // lchmod, broken prior to 0.6.2
+ // back-port the fix here.
+ if (constants.hasOwnProperty('O_SYMLINK') &&
+ process.version.match(/^v0\.6\.[0-2]|^v0\.5\./)) {
+ patchLchmod(fs)
+ }
+
+ // lutimes implementation, or no-op
+ if (!fs.lutimes) {
+ patchLutimes(fs)
+ }
+
+ // https://github.com/isaacs/node-graceful-fs/issues/4
+ // Chown should not fail on einval or eperm if non-root.
+ // It should not fail on enosys ever, as this just indicates
+ // that a fs doesn't support the intended operation.
+
+ fs.chown = chownFix(fs.chown)
+ fs.fchown = chownFix(fs.fchown)
+ fs.lchown = chownFix(fs.lchown)
+
+ fs.chmod = chmodFix(fs.chmod)
+ fs.fchmod = chmodFix(fs.fchmod)
+ fs.lchmod = chmodFix(fs.lchmod)
+
+ fs.chownSync = chownFixSync(fs.chownSync)
+ fs.fchownSync = chownFixSync(fs.fchownSync)
+ fs.lchownSync = chownFixSync(fs.lchownSync)
+
+ fs.chmodSync = chmodFixSync(fs.chmodSync)
+ fs.fchmodSync = chmodFixSync(fs.fchmodSync)
+ fs.lchmodSync = chmodFixSync(fs.lchmodSync)
+
+ fs.stat = statFix(fs.stat)
+ fs.fstat = statFix(fs.fstat)
+ fs.lstat = statFix(fs.lstat)
+
+ fs.statSync = statFixSync(fs.statSync)
+ fs.fstatSync = statFixSync(fs.fstatSync)
+ fs.lstatSync = statFixSync(fs.lstatSync)
+
+ // if lchmod/lchown do not exist, then make them no-ops
+ if (!fs.lchmod) {
+ fs.lchmod = function (path, mode, cb) {
+ if (cb) process.nextTick(cb)
+ }
+ fs.lchmodSync = function () {}
+ }
+ if (!fs.lchown) {
+ fs.lchown = function (path, uid, gid, cb) {
+ if (cb) process.nextTick(cb)
+ }
+ fs.lchownSync = function () {}
+ }
+
+ // on Windows, A/V software can lock the directory, causing this
+ // to fail with an EACCES or EPERM if the directory contains newly
+ // created files. Try again on failure, for up to 60 seconds.
+
+ // Set the timeout this long because some Windows Anti-Virus, such as Parity
+ // bit9, may lock files for up to a minute, causing npm package install
+ // failures. Also, take care to yield the scheduler. Windows scheduling gives
+ // CPU to a busy looping process, which can cause the program causing the lock
+ // contention to be starved of CPU by node, so the contention doesn't resolve.
+ if (platform === "win32") {
+ fs.rename = (function (fs$rename) { return function (from, to, cb) {
+ var start = Date.now()
+ var backoff = 0;
+ fs$rename(from, to, function CB (er) {
+ if (er
+ && (er.code === "EACCES" || er.code === "EPERM")
+ && Date.now() - start < 60000) {
+ setTimeout(function() {
+ fs.stat(to, function (stater, st) {
+ if (stater && stater.code === "ENOENT")
+ fs$rename(from, to, CB);
+ else
+ cb(er)
+ })
+ }, backoff)
+ if (backoff < 100)
+ backoff += 10;
+ return;
+ }
+ if (cb) cb(er)
+ })
+ }})(fs.rename)
+ }
+
+ // if read() returns EAGAIN, then just try it again.
+ fs.read = (function (fs$read) {
+ function read (fd, buffer, offset, length, position, callback_) {
+ var callback
+ if (callback_ && typeof callback_ === 'function') {
+ var eagCounter = 0
+ callback = function (er, _, __) {
+ if (er && er.code === 'EAGAIN' && eagCounter < 10) {
+ eagCounter ++
+ return fs$read.call(fs, fd, buffer, offset, length, position, callback)
+ }
+ callback_.apply(this, arguments)
+ }
+ }
+ return fs$read.call(fs, fd, buffer, offset, length, position, callback)
+ }
+
+ // This ensures `util.promisify` works as it does for native `fs.read`.
+ read.__proto__ = fs$read
+ return read
+ })(fs.read)
+
+ fs.readSync = (function (fs$readSync) { return function (fd, buffer, offset, length, position) {
+ var eagCounter = 0
+ while (true) {
+ try {
+ return fs$readSync.call(fs, fd, buffer, offset, length, position)
+ } catch (er) {
+ if (er.code === 'EAGAIN' && eagCounter < 10) {
+ eagCounter ++
+ continue
+ }
+ throw er
+ }
+ }
+ }})(fs.readSync)
+
+ function patchLchmod (fs) {
+ fs.lchmod = function (path, mode, callback) {
+ fs.open( path
+ , constants.O_WRONLY | constants.O_SYMLINK
+ , mode
+ , function (err, fd) {
+ if (err) {
+ if (callback) callback(err)
+ return
+ }
+ // prefer to return the chmod error, if one occurs,
+ // but still try to close, and report closing errors if they occur.
+ fs.fchmod(fd, mode, function (err) {
+ fs.close(fd, function(err2) {
+ if (callback) callback(err || err2)
+ })
+ })
+ })
+ }
+
+ fs.lchmodSync = function (path, mode) {
+ var fd = fs.openSync(path, constants.O_WRONLY | constants.O_SYMLINK, mode)
+
+ // prefer to return the chmod error, if one occurs,
+ // but still try to close, and report closing errors if they occur.
+ var threw = true
+ var ret
+ try {
+ ret = fs.fchmodSync(fd, mode)
+ threw = false
+ } finally {
+ if (threw) {
+ try {
+ fs.closeSync(fd)
+ } catch (er) {}
+ } else {
+ fs.closeSync(fd)
+ }
+ }
+ return ret
+ }
+ }
+
+ function patchLutimes (fs) {
+ if (constants.hasOwnProperty("O_SYMLINK")) {
+ fs.lutimes = function (path, at, mt, cb) {
+ fs.open(path, constants.O_SYMLINK, function (er, fd) {
+ if (er) {
+ if (cb) cb(er)
+ return
+ }
+ fs.futimes(fd, at, mt, function (er) {
+ fs.close(fd, function (er2) {
+ if (cb) cb(er || er2)
+ })
+ })
+ })
+ }
+
+ fs.lutimesSync = function (path, at, mt) {
+ var fd = fs.openSync(path, constants.O_SYMLINK)
+ var ret
+ var threw = true
+ try {
+ ret = fs.futimesSync(fd, at, mt)
+ threw = false
+ } finally {
+ if (threw) {
+ try {
+ fs.closeSync(fd)
+ } catch (er) {}
+ } else {
+ fs.closeSync(fd)
+ }
+ }
+ return ret
+ }
+
+ } else {
+ fs.lutimes = function (_a, _b, _c, cb) { if (cb) process.nextTick(cb) }
+ fs.lutimesSync = function () {}
+ }
+ }
+
+ function chmodFix (orig) {
+ if (!orig) return orig
+ return function (target, mode, cb) {
+ return orig.call(fs, target, mode, function (er) {
+ if (chownErOk(er)) er = null
+ if (cb) cb.apply(this, arguments)
+ })
+ }
+ }
+
+ function chmodFixSync (orig) {
+ if (!orig) return orig
+ return function (target, mode) {
+ try {
+ return orig.call(fs, target, mode)
+ } catch (er) {
+ if (!chownErOk(er)) throw er
+ }
+ }
+ }
+
+
+ function chownFix (orig) {
+ if (!orig) return orig
+ return function (target, uid, gid, cb) {
+ return orig.call(fs, target, uid, gid, function (er) {
+ if (chownErOk(er)) er = null
+ if (cb) cb.apply(this, arguments)
+ })
+ }
+ }
+
+ function chownFixSync (orig) {
+ if (!orig) return orig
+ return function (target, uid, gid) {
+ try {
+ return orig.call(fs, target, uid, gid)
+ } catch (er) {
+ if (!chownErOk(er)) throw er
+ }
+ }
+ }
+
+ function statFix (orig) {
+ if (!orig) return orig
+ // Older versions of Node erroneously returned signed integers for
+ // uid + gid.
+ return function (target, options, cb) {
+ if (typeof options === 'function') {
+ cb = options
+ options = null
+ }
+ function callback (er, stats) {
+ if (stats) {
+ if (stats.uid < 0) stats.uid += 0x100000000
+ if (stats.gid < 0) stats.gid += 0x100000000
+ }
+ if (cb) cb.apply(this, arguments)
+ }
+ return options ? orig.call(fs, target, options, callback)
+ : orig.call(fs, target, callback)
+ }
+ }
+
+ function statFixSync (orig) {
+ if (!orig) return orig
+ // Older versions of Node erroneously returned signed integers for
+ // uid + gid.
+ return function (target, options) {
+ var stats = options ? orig.call(fs, target, options)
+ : orig.call(fs, target)
+ if (stats.uid < 0) stats.uid += 0x100000000
+ if (stats.gid < 0) stats.gid += 0x100000000
+ return stats;
+ }
+ }
+
+ // ENOSYS means that the fs doesn't support the op. Just ignore
+ // that, because it doesn't matter.
+ //
+ // if there's no getuid, or if getuid() is something other
+ // than 0, and the error is EINVAL or EPERM, then just ignore
+ // it.
+ //
+ // This specific case is a silent failure in cp, install, tar,
+ // and most other unix tools that manage permissions.
+ //
+ // When running as root, or if other types of errors are
+ // encountered, then it's strict.
+ function chownErOk (er) {
+ if (!er)
+ return true
+
+ if (er.code === "ENOSYS")
+ return true
+
+ var nonroot = !process.getuid || process.getuid() !== 0
+ if (nonroot) {
+ if (er.code === "EINVAL" || er.code === "EPERM")
+ return true
+ }
+
+ return false
+ }
+}