browserfs
Version:
A filesystem in your browser!
760 lines • 130 kB
JavaScript
"use strict";
var __extends = (this && this.__extends) || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var file_system = require('../core/file_system');
var api_error_1 = require('../core/api_error');
var node_fs_stats_1 = require('../core/node_fs_stats');
var path = require('path');
var Inode = require('../generic/inode');
var preload_file = require('../generic/preload_file');
var ROOT_NODE_ID = "/";
function GenerateRandomID() {
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
return v.toString(16);
});
}
function noError(e, cb) {
if (e) {
cb(e);
return false;
}
return true;
}
function noErrorTx(e, tx, cb) {
if (e) {
tx.abort(function () {
cb(e);
});
return false;
}
return true;
}
var SimpleSyncRWTransaction = (function () {
function SimpleSyncRWTransaction(store) {
this.store = store;
this.originalData = {};
this.modifiedKeys = [];
}
SimpleSyncRWTransaction.prototype.stashOldValue = function (key, value) {
if (!this.originalData.hasOwnProperty(key)) {
this.originalData[key] = value;
}
};
SimpleSyncRWTransaction.prototype.markModified = function (key) {
if (this.modifiedKeys.indexOf(key) === -1) {
this.modifiedKeys.push(key);
if (!this.originalData.hasOwnProperty(key)) {
this.originalData[key] = this.store.get(key);
}
}
};
SimpleSyncRWTransaction.prototype.get = function (key) {
var val = this.store.get(key);
this.stashOldValue(key, val);
return val;
};
SimpleSyncRWTransaction.prototype.put = function (key, data, overwrite) {
this.markModified(key);
return this.store.put(key, data, overwrite);
};
SimpleSyncRWTransaction.prototype.del = function (key) {
this.markModified(key);
this.store.del(key);
};
SimpleSyncRWTransaction.prototype.commit = function () { };
SimpleSyncRWTransaction.prototype.abort = function () {
var i, key, value;
for (i = 0; i < this.modifiedKeys.length; i++) {
key = this.modifiedKeys[i];
value = this.originalData[key];
if (value === null) {
this.store.del(key);
}
else {
this.store.put(key, value, true);
}
}
};
return SimpleSyncRWTransaction;
}());
exports.SimpleSyncRWTransaction = SimpleSyncRWTransaction;
var SyncKeyValueFile = (function (_super) {
__extends(SyncKeyValueFile, _super);
function SyncKeyValueFile(_fs, _path, _flag, _stat, contents) {
_super.call(this, _fs, _path, _flag, _stat, contents);
}
SyncKeyValueFile.prototype.syncSync = function () {
if (this.isDirty()) {
this._fs._syncSync(this.getPath(), this.getBuffer(), this.getStats());
this.resetDirty();
}
};
SyncKeyValueFile.prototype.closeSync = function () {
this.syncSync();
};
return SyncKeyValueFile;
}(preload_file.PreloadFile));
exports.SyncKeyValueFile = SyncKeyValueFile;
var SyncKeyValueFileSystem = (function (_super) {
__extends(SyncKeyValueFileSystem, _super);
function SyncKeyValueFileSystem(options) {
_super.call(this);
this.store = options.store;
this.makeRootDirectory();
}
SyncKeyValueFileSystem.isAvailable = function () { return true; };
SyncKeyValueFileSystem.prototype.getName = function () { return this.store.name(); };
SyncKeyValueFileSystem.prototype.isReadOnly = function () { return false; };
SyncKeyValueFileSystem.prototype.supportsSymlinks = function () { return false; };
SyncKeyValueFileSystem.prototype.supportsProps = function () { return false; };
SyncKeyValueFileSystem.prototype.supportsSynch = function () { return true; };
SyncKeyValueFileSystem.prototype.makeRootDirectory = function () {
var tx = this.store.beginTransaction('readwrite');
if (tx.get(ROOT_NODE_ID) === undefined) {
var currTime = (new Date()).getTime(), dirInode = new Inode(GenerateRandomID(), 4096, 511 | node_fs_stats_1.FileType.DIRECTORY, currTime, currTime, currTime);
tx.put(dirInode.id, new Buffer("{}"), false);
tx.put(ROOT_NODE_ID, dirInode.toBuffer(), false);
tx.commit();
}
};
SyncKeyValueFileSystem.prototype._findINode = function (tx, parent, filename) {
var _this = this;
var read_directory = function (inode) {
var dirList = _this.getDirListing(tx, parent, inode);
if (dirList[filename]) {
return dirList[filename];
}
else {
throw api_error_1.ApiError.ENOENT(path.resolve(parent, filename));
}
};
if (parent === '/') {
if (filename === '') {
return ROOT_NODE_ID;
}
else {
return read_directory(this.getINode(tx, parent, ROOT_NODE_ID));
}
}
else {
return read_directory(this.getINode(tx, parent + path.sep + filename, this._findINode(tx, path.dirname(parent), path.basename(parent))));
}
};
SyncKeyValueFileSystem.prototype.findINode = function (tx, p) {
return this.getINode(tx, p, this._findINode(tx, path.dirname(p), path.basename(p)));
};
SyncKeyValueFileSystem.prototype.getINode = function (tx, p, id) {
var inode = tx.get(id);
if (inode === undefined) {
throw api_error_1.ApiError.ENOENT(p);
}
return Inode.fromBuffer(inode);
};
SyncKeyValueFileSystem.prototype.getDirListing = function (tx, p, inode) {
if (!inode.isDirectory()) {
throw api_error_1.ApiError.ENOTDIR(p);
}
var data = tx.get(inode.id);
if (data === undefined) {
throw api_error_1.ApiError.ENOENT(p);
}
return JSON.parse(data.toString());
};
SyncKeyValueFileSystem.prototype.addNewNode = function (tx, data) {
var retries = 0, currId;
while (retries < 5) {
try {
currId = GenerateRandomID();
tx.put(currId, data, false);
return currId;
}
catch (e) {
}
}
throw new api_error_1.ApiError(api_error_1.ErrorCode.EIO, 'Unable to commit data to key-value store.');
};
SyncKeyValueFileSystem.prototype.commitNewFile = function (tx, p, type, mode, data) {
var parentDir = path.dirname(p), fname = path.basename(p), parentNode = this.findINode(tx, parentDir), dirListing = this.getDirListing(tx, parentDir, parentNode), currTime = (new Date()).getTime();
if (p === '/') {
throw api_error_1.ApiError.EEXIST(p);
}
if (dirListing[fname]) {
throw api_error_1.ApiError.EEXIST(p);
}
try {
var dataId = this.addNewNode(tx, data), fileNode = new Inode(dataId, data.length, mode | type, currTime, currTime, currTime), fileNodeId = this.addNewNode(tx, fileNode.toBuffer());
dirListing[fname] = fileNodeId;
tx.put(parentNode.id, new Buffer(JSON.stringify(dirListing)), true);
}
catch (e) {
tx.abort();
throw e;
}
tx.commit();
return fileNode;
};
SyncKeyValueFileSystem.prototype.empty = function () {
this.store.clear();
this.makeRootDirectory();
};
SyncKeyValueFileSystem.prototype.renameSync = function (oldPath, newPath) {
var tx = this.store.beginTransaction('readwrite'), oldParent = path.dirname(oldPath), oldName = path.basename(oldPath), newParent = path.dirname(newPath), newName = path.basename(newPath), oldDirNode = this.findINode(tx, oldParent), oldDirList = this.getDirListing(tx, oldParent, oldDirNode);
if (!oldDirList[oldName]) {
throw api_error_1.ApiError.ENOENT(oldPath);
}
var nodeId = oldDirList[oldName];
delete oldDirList[oldName];
if ((newParent + '/').indexOf(oldPath + '/') === 0) {
throw new api_error_1.ApiError(api_error_1.ErrorCode.EBUSY, oldParent);
}
var newDirNode, newDirList;
if (newParent === oldParent) {
newDirNode = oldDirNode;
newDirList = oldDirList;
}
else {
newDirNode = this.findINode(tx, newParent);
newDirList = this.getDirListing(tx, newParent, newDirNode);
}
if (newDirList[newName]) {
var newNameNode = this.getINode(tx, newPath, newDirList[newName]);
if (newNameNode.isFile()) {
try {
tx.del(newNameNode.id);
tx.del(newDirList[newName]);
}
catch (e) {
tx.abort();
throw e;
}
}
else {
throw api_error_1.ApiError.EPERM(newPath);
}
}
newDirList[newName] = nodeId;
try {
tx.put(oldDirNode.id, new Buffer(JSON.stringify(oldDirList)), true);
tx.put(newDirNode.id, new Buffer(JSON.stringify(newDirList)), true);
}
catch (e) {
tx.abort();
throw e;
}
tx.commit();
};
SyncKeyValueFileSystem.prototype.statSync = function (p, isLstat) {
return this.findINode(this.store.beginTransaction('readonly'), p).toStats();
};
SyncKeyValueFileSystem.prototype.createFileSync = function (p, flag, mode) {
var tx = this.store.beginTransaction('readwrite'), data = new Buffer(0), newFile = this.commitNewFile(tx, p, node_fs_stats_1.FileType.FILE, mode, data);
return new SyncKeyValueFile(this, p, flag, newFile.toStats(), data);
};
SyncKeyValueFileSystem.prototype.openFileSync = function (p, flag) {
var tx = this.store.beginTransaction('readonly'), node = this.findINode(tx, p), data = tx.get(node.id);
if (data === undefined) {
throw api_error_1.ApiError.ENOENT(p);
}
return new SyncKeyValueFile(this, p, flag, node.toStats(), data);
};
SyncKeyValueFileSystem.prototype.removeEntry = function (p, isDir) {
var tx = this.store.beginTransaction('readwrite'), parent = path.dirname(p), parentNode = this.findINode(tx, parent), parentListing = this.getDirListing(tx, parent, parentNode), fileName = path.basename(p);
if (!parentListing[fileName]) {
throw api_error_1.ApiError.ENOENT(p);
}
var fileNodeId = parentListing[fileName];
delete parentListing[fileName];
var fileNode = this.getINode(tx, p, fileNodeId);
if (!isDir && fileNode.isDirectory()) {
throw api_error_1.ApiError.EISDIR(p);
}
else if (isDir && !fileNode.isDirectory()) {
throw api_error_1.ApiError.ENOTDIR(p);
}
try {
tx.del(fileNode.id);
tx.del(fileNodeId);
tx.put(parentNode.id, new Buffer(JSON.stringify(parentListing)), true);
}
catch (e) {
tx.abort();
throw e;
}
tx.commit();
};
SyncKeyValueFileSystem.prototype.unlinkSync = function (p) {
this.removeEntry(p, false);
};
SyncKeyValueFileSystem.prototype.rmdirSync = function (p) {
if (this.readdirSync(p).length > 0) {
throw api_error_1.ApiError.ENOTEMPTY(p);
}
else {
this.removeEntry(p, true);
}
};
SyncKeyValueFileSystem.prototype.mkdirSync = function (p, mode) {
var tx = this.store.beginTransaction('readwrite'), data = new Buffer('{}');
this.commitNewFile(tx, p, node_fs_stats_1.FileType.DIRECTORY, mode, data);
};
SyncKeyValueFileSystem.prototype.readdirSync = function (p) {
var tx = this.store.beginTransaction('readonly');
return Object.keys(this.getDirListing(tx, p, this.findINode(tx, p)));
};
SyncKeyValueFileSystem.prototype._syncSync = function (p, data, stats) {
var tx = this.store.beginTransaction('readwrite'), fileInodeId = this._findINode(tx, path.dirname(p), path.basename(p)), fileInode = this.getINode(tx, p, fileInodeId), inodeChanged = fileInode.update(stats);
try {
tx.put(fileInode.id, data, true);
if (inodeChanged) {
tx.put(fileInodeId, fileInode.toBuffer(), true);
}
}
catch (e) {
tx.abort();
throw e;
}
tx.commit();
};
return SyncKeyValueFileSystem;
}(file_system.SynchronousFileSystem));
exports.SyncKeyValueFileSystem = SyncKeyValueFileSystem;
var AsyncKeyValueFile = (function (_super) {
__extends(AsyncKeyValueFile, _super);
function AsyncKeyValueFile(_fs, _path, _flag, _stat, contents) {
_super.call(this, _fs, _path, _flag, _stat, contents);
}
AsyncKeyValueFile.prototype.sync = function (cb) {
var _this = this;
if (this.isDirty()) {
this._fs._sync(this.getPath(), this.getBuffer(), this.getStats(), function (e) {
if (!e) {
_this.resetDirty();
}
cb(e);
});
}
else {
cb();
}
};
AsyncKeyValueFile.prototype.close = function (cb) {
this.sync(cb);
};
return AsyncKeyValueFile;
}(preload_file.PreloadFile));
exports.AsyncKeyValueFile = AsyncKeyValueFile;
var AsyncKeyValueFileSystem = (function (_super) {
__extends(AsyncKeyValueFileSystem, _super);
function AsyncKeyValueFileSystem() {
_super.apply(this, arguments);
}
AsyncKeyValueFileSystem.prototype.init = function (store, cb) {
this.store = store;
this.makeRootDirectory(cb);
};
AsyncKeyValueFileSystem.isAvailable = function () { return true; };
AsyncKeyValueFileSystem.prototype.getName = function () { return this.store.name(); };
AsyncKeyValueFileSystem.prototype.isReadOnly = function () { return false; };
AsyncKeyValueFileSystem.prototype.supportsSymlinks = function () { return false; };
AsyncKeyValueFileSystem.prototype.supportsProps = function () { return false; };
AsyncKeyValueFileSystem.prototype.supportsSynch = function () { return false; };
AsyncKeyValueFileSystem.prototype.makeRootDirectory = function (cb) {
var tx = this.store.beginTransaction('readwrite');
tx.get(ROOT_NODE_ID, function (e, data) {
if (e || data === undefined) {
var currTime = (new Date()).getTime(), dirInode = new Inode(GenerateRandomID(), 4096, 511 | node_fs_stats_1.FileType.DIRECTORY, currTime, currTime, currTime);
tx.put(dirInode.id, new Buffer("{}"), false, function (e) {
if (noErrorTx(e, tx, cb)) {
tx.put(ROOT_NODE_ID, dirInode.toBuffer(), false, function (e) {
if (e) {
tx.abort(function () { cb(e); });
}
else {
tx.commit(cb);
}
});
}
});
}
else {
tx.commit(cb);
}
});
};
AsyncKeyValueFileSystem.prototype._findINode = function (tx, parent, filename, cb) {
var _this = this;
var handle_directory_listings = function (e, inode, dirList) {
if (e) {
cb(e);
}
else if (dirList[filename]) {
cb(null, dirList[filename]);
}
else {
cb(api_error_1.ApiError.ENOENT(path.resolve(parent, filename)));
}
};
if (parent === '/') {
if (filename === '') {
cb(null, ROOT_NODE_ID);
}
else {
this.getINode(tx, parent, ROOT_NODE_ID, function (e, inode) {
if (noError(e, cb)) {
_this.getDirListing(tx, parent, inode, function (e, dirList) {
handle_directory_listings(e, inode, dirList);
});
}
});
}
}
else {
this.findINodeAndDirListing(tx, parent, handle_directory_listings);
}
};
AsyncKeyValueFileSystem.prototype.findINode = function (tx, p, cb) {
var _this = this;
this._findINode(tx, path.dirname(p), path.basename(p), function (e, id) {
if (noError(e, cb)) {
_this.getINode(tx, p, id, cb);
}
});
};
AsyncKeyValueFileSystem.prototype.getINode = function (tx, p, id, cb) {
tx.get(id, function (e, data) {
if (noError(e, cb)) {
if (data === undefined) {
cb(api_error_1.ApiError.ENOENT(p));
}
else {
cb(null, Inode.fromBuffer(data));
}
}
});
};
AsyncKeyValueFileSystem.prototype.getDirListing = function (tx, p, inode, cb) {
if (!inode.isDirectory()) {
cb(api_error_1.ApiError.ENOTDIR(p));
}
else {
tx.get(inode.id, function (e, data) {
if (noError(e, cb)) {
try {
cb(null, JSON.parse(data.toString()));
}
catch (e) {
cb(api_error_1.ApiError.ENOENT(p));
}
}
});
}
};
AsyncKeyValueFileSystem.prototype.findINodeAndDirListing = function (tx, p, cb) {
var _this = this;
this.findINode(tx, p, function (e, inode) {
if (noError(e, cb)) {
_this.getDirListing(tx, p, inode, function (e, listing) {
if (noError(e, cb)) {
cb(null, inode, listing);
}
});
}
});
};
AsyncKeyValueFileSystem.prototype.addNewNode = function (tx, data, cb) {
var retries = 0, currId, reroll = function () {
if (++retries === 5) {
cb(new api_error_1.ApiError(api_error_1.ErrorCode.EIO, 'Unable to commit data to key-value store.'));
}
else {
currId = GenerateRandomID();
tx.put(currId, data, false, function (e, committed) {
if (e || !committed) {
reroll();
}
else {
cb(null, currId);
}
});
}
};
reroll();
};
AsyncKeyValueFileSystem.prototype.commitNewFile = function (tx, p, type, mode, data, cb) {
var _this = this;
var parentDir = path.dirname(p), fname = path.basename(p), currTime = (new Date()).getTime();
if (p === '/') {
return cb(api_error_1.ApiError.EEXIST(p));
}
this.findINodeAndDirListing(tx, parentDir, function (e, parentNode, dirListing) {
if (noErrorTx(e, tx, cb)) {
if (dirListing[fname]) {
tx.abort(function () {
cb(api_error_1.ApiError.EEXIST(p));
});
}
else {
_this.addNewNode(tx, data, function (e, dataId) {
if (noErrorTx(e, tx, cb)) {
var fileInode = new Inode(dataId, data.length, mode | type, currTime, currTime, currTime);
_this.addNewNode(tx, fileInode.toBuffer(), function (e, fileInodeId) {
if (noErrorTx(e, tx, cb)) {
dirListing[fname] = fileInodeId;
tx.put(parentNode.id, new Buffer(JSON.stringify(dirListing)), true, function (e) {
if (noErrorTx(e, tx, cb)) {
tx.commit(function (e) {
if (noErrorTx(e, tx, cb)) {
cb(null, fileInode);
}
});
}
});
}
});
}
});
}
}
});
};
AsyncKeyValueFileSystem.prototype.empty = function (cb) {
var _this = this;
this.store.clear(function (e) {
if (noError(e, cb)) {
_this.makeRootDirectory(cb);
}
});
};
AsyncKeyValueFileSystem.prototype.rename = function (oldPath, newPath, cb) {
var _this = this;
var tx = this.store.beginTransaction('readwrite'), oldParent = path.dirname(oldPath), oldName = path.basename(oldPath), newParent = path.dirname(newPath), newName = path.basename(newPath), inodes = {}, lists = {}, errorOccurred = false;
if ((newParent + '/').indexOf(oldPath + '/') === 0) {
return cb(new api_error_1.ApiError(api_error_1.ErrorCode.EBUSY, oldParent));
}
var theOleSwitcharoo = function () {
if (errorOccurred || !lists.hasOwnProperty(oldParent) || !lists.hasOwnProperty(newParent)) {
return;
}
var oldParentList = lists[oldParent], oldParentINode = inodes[oldParent], newParentList = lists[newParent], newParentINode = inodes[newParent];
if (!oldParentList[oldName]) {
cb(api_error_1.ApiError.ENOENT(oldPath));
}
else {
var fileId = oldParentList[oldName];
delete oldParentList[oldName];
var completeRename = function () {
newParentList[newName] = fileId;
tx.put(oldParentINode.id, new Buffer(JSON.stringify(oldParentList)), true, function (e) {
if (noErrorTx(e, tx, cb)) {
if (oldParent === newParent) {
tx.commit(cb);
}
else {
tx.put(newParentINode.id, new Buffer(JSON.stringify(newParentList)), true, function (e) {
if (noErrorTx(e, tx, cb)) {
tx.commit(cb);
}
});
}
}
});
};
if (newParentList[newName]) {
_this.getINode(tx, newPath, newParentList[newName], function (e, inode) {
if (noErrorTx(e, tx, cb)) {
if (inode.isFile()) {
tx.del(inode.id, function (e) {
if (noErrorTx(e, tx, cb)) {
tx.del(newParentList[newName], function (e) {
if (noErrorTx(e, tx, cb)) {
completeRename();
}
});
}
});
}
else {
tx.abort(function (e) {
cb(api_error_1.ApiError.EPERM(newPath));
});
}
}
});
}
else {
completeRename();
}
}
};
var processInodeAndListings = function (p) {
_this.findINodeAndDirListing(tx, p, function (e, node, dirList) {
if (e) {
if (!errorOccurred) {
errorOccurred = true;
tx.abort(function () {
cb(e);
});
}
}
else {
inodes[p] = node;
lists[p] = dirList;
theOleSwitcharoo();
}
});
};
processInodeAndListings(oldParent);
if (oldParent !== newParent) {
processInodeAndListings(newParent);
}
};
AsyncKeyValueFileSystem.prototype.stat = function (p, isLstat, cb) {
var tx = this.store.beginTransaction('readonly');
this.findINode(tx, p, function (e, inode) {
if (noError(e, cb)) {
cb(null, inode.toStats());
}
});
};
AsyncKeyValueFileSystem.prototype.createFile = function (p, flag, mode, cb) {
var _this = this;
var tx = this.store.beginTransaction('readwrite'), data = new Buffer(0);
this.commitNewFile(tx, p, node_fs_stats_1.FileType.FILE, mode, data, function (e, newFile) {
if (noError(e, cb)) {
cb(null, new AsyncKeyValueFile(_this, p, flag, newFile.toStats(), data));
}
});
};
AsyncKeyValueFileSystem.prototype.openFile = function (p, flag, cb) {
var _this = this;
var tx = this.store.beginTransaction('readonly');
this.findINode(tx, p, function (e, inode) {
if (noError(e, cb)) {
tx.get(inode.id, function (e, data) {
if (noError(e, cb)) {
if (data === undefined) {
cb(api_error_1.ApiError.ENOENT(p));
}
else {
cb(null, new AsyncKeyValueFile(_this, p, flag, inode.toStats(), data));
}
}
});
}
});
};
AsyncKeyValueFileSystem.prototype.removeEntry = function (p, isDir, cb) {
var _this = this;
var tx = this.store.beginTransaction('readwrite'), parent = path.dirname(p), fileName = path.basename(p);
this.findINodeAndDirListing(tx, parent, function (e, parentNode, parentListing) {
if (noErrorTx(e, tx, cb)) {
if (!parentListing[fileName]) {
tx.abort(function () {
cb(api_error_1.ApiError.ENOENT(p));
});
}
else {
var fileNodeId = parentListing[fileName];
delete parentListing[fileName];
_this.getINode(tx, p, fileNodeId, function (e, fileNode) {
if (noErrorTx(e, tx, cb)) {
if (!isDir && fileNode.isDirectory()) {
tx.abort(function () {
cb(api_error_1.ApiError.EISDIR(p));
});
}
else if (isDir && !fileNode.isDirectory()) {
tx.abort(function () {
cb(api_error_1.ApiError.ENOTDIR(p));
});
}
else {
tx.del(fileNode.id, function (e) {
if (noErrorTx(e, tx, cb)) {
tx.del(fileNodeId, function (e) {
if (noErrorTx(e, tx, cb)) {
tx.put(parentNode.id, new Buffer(JSON.stringify(parentListing)), true, function (e) {
if (noErrorTx(e, tx, cb)) {
tx.commit(cb);
}
});
}
});
}
});
}
}
});
}
}
});
};
AsyncKeyValueFileSystem.prototype.unlink = function (p, cb) {
this.removeEntry(p, false, cb);
};
AsyncKeyValueFileSystem.prototype.rmdir = function (p, cb) {
var _this = this;
this.readdir(p, function (err, files) {
if (err) {
cb(err);
}
else if (files.length > 0) {
cb(api_error_1.ApiError.ENOTEMPTY(p));
}
else {
_this.removeEntry(p, true, cb);
}
});
};
AsyncKeyValueFileSystem.prototype.mkdir = function (p, mode, cb) {
var tx = this.store.beginTransaction('readwrite'), data = new Buffer('{}');
this.commitNewFile(tx, p, node_fs_stats_1.FileType.DIRECTORY, mode, data, cb);
};
AsyncKeyValueFileSystem.prototype.readdir = function (p, cb) {
var _this = this;
var tx = this.store.beginTransaction('readonly');
this.findINode(tx, p, function (e, inode) {
if (noError(e, cb)) {
_this.getDirListing(tx, p, inode, function (e, dirListing) {
if (noError(e, cb)) {
cb(null, Object.keys(dirListing));
}
});
}
});
};
AsyncKeyValueFileSystem.prototype._sync = function (p, data, stats, cb) {
var _this = this;
var tx = this.store.beginTransaction('readwrite');
this._findINode(tx, path.dirname(p), path.basename(p), function (e, fileInodeId) {
if (noErrorTx(e, tx, cb)) {
_this.getINode(tx, p, fileInodeId, function (e, fileInode) {
if (noErrorTx(e, tx, cb)) {
var inodeChanged = fileInode.update(stats);
tx.put(fileInode.id, data, true, function (e) {
if (noErrorTx(e, tx, cb)) {
if (inodeChanged) {
tx.put(fileInodeId, fileInode.toBuffer(), true, function (e) {
if (noErrorTx(e, tx, cb)) {
tx.commit(cb);
}
});
}
else {
tx.commit(cb);
}
}
});
}
});
}
});
};
return AsyncKeyValueFileSystem;
}(file_system.BaseFileSystem));
exports.AsyncKeyValueFileSystem = AsyncKeyValueFileSystem;
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