"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FSWatcher = exports.StatWatcher = exports.Volume = exports.toUnixTimestamp = exports.bufferToEncoding = exports.dataToBuffer = exports.dataToStr = exports.pathToSteps = exports.filenameToSteps = exports.pathToFilename = exports.flagsToNumber = exports.FLAGS = void 0;
const pathModule = require("path");
const node_1 = require("./node");
const Stats_1 = require("./Stats");
const Dirent_1 = require("./Dirent");
const buffer_1 = require("./internal/buffer");
const setImmediate_1 = require("./setImmediate");
const process_1 = require("./process");
const setTimeoutUnref_1 = require("./setTimeoutUnref");
const stream_1 = require("stream");
const constants_1 = require("./constants");
const events_1 = require("events");
const encoding_1 = require("./encoding");
const errors = require("./internal/errors");
const util = require("util");
const promises_1 = require("./node/promises");
const resolveCrossPlatform = pathModule.resolve;
const { O_RDONLY, O_WRONLY, O_RDWR, O_CREAT, O_EXCL, O_TRUNC, O_APPEND, O_SYNC, O_DIRECTORY, F_OK, COPYFILE_EXCL, COPYFILE_FICLONE_FORCE, } = constants_1.constants;
const { sep, relative, join, dirname } = pathModule.posix ? pathModule.posix : pathModule;
const isWin = process_1.default.platform === 'win32';
const kMinPoolSpace = 128;
// const kMaxLength = require('buffer').kMaxLength;
// ---------------------------------------- Error messages
// TODO: Use `internal/errors.js` in the future.
const ERRSTR = {
PATH_STR: 'path must be a string or Buffer',
// FD: 'file descriptor must be a unsigned 32-bit integer',
FD: 'fd must be a file descriptor',
MODE_INT: 'mode must be an int',
CB: 'callback must be a function',
UID: 'uid must be an unsigned int',
GID: 'gid must be an unsigned int',
LEN: 'len must be an integer',
ATIME: 'atime must be an integer',
MTIME: 'mtime must be an integer',
PREFIX: 'filename prefix is required',
BUFFER: 'buffer must be an instance of Buffer or StaticBuffer',
OFFSET: 'offset must be an integer',
LENGTH: 'length must be an integer',
POSITION: 'position must be an integer',
};
const ERRSTR_OPTS = tipeof => `Expected options to be either an object or a string, but got ${tipeof} instead`;
// const ERRSTR_FLAG = flag => `Unknown file open flag: ${flag}`;
const ENOENT = 'ENOENT';
const EBADF = 'EBADF';
const EINVAL = 'EINVAL';
const EPERM = 'EPERM';
const EPROTO = 'EPROTO';
const EEXIST = 'EEXIST';
const ENOTDIR = 'ENOTDIR';
const EMFILE = 'EMFILE';
const EACCES = 'EACCES';
const EISDIR = 'EISDIR';
const ENOTEMPTY = 'ENOTEMPTY';
const ENOSYS = 'ENOSYS';
const ERR_FS_EISDIR = 'ERR_FS_EISDIR';
function formatError(errorCode, func = '', path = '', path2 = '') {
let pathFormatted = '';
if (path)
pathFormatted = ` '${path}'`;
if (path2)
pathFormatted += ` -> '${path2}'`;
switch (errorCode) {
case ENOENT:
return `ENOENT: no such file or directory, ${func}${pathFormatted}`;
case EBADF:
return `EBADF: bad file descriptor, ${func}${pathFormatted}`;
case EINVAL:
return `EINVAL: invalid argument, ${func}${pathFormatted}`;
case EPERM:
return `EPERM: operation not permitted, ${func}${pathFormatted}`;
case EPROTO:
return `EPROTO: protocol error, ${func}${pathFormatted}`;
case EEXIST:
return `EEXIST: file already exists, ${func}${pathFormatted}`;
case ENOTDIR:
return `ENOTDIR: not a directory, ${func}${pathFormatted}`;
case EISDIR:
return `EISDIR: illegal operation on a directory, ${func}${pathFormatted}`;
case EACCES:
return `EACCES: permission denied, ${func}${pathFormatted}`;
case ENOTEMPTY:
return `ENOTEMPTY: directory not empty, ${func}${pathFormatted}`;
case EMFILE:
return `EMFILE: too many open files, ${func}${pathFormatted}`;
case ENOSYS:
return `ENOSYS: function not implemented, ${func}${pathFormatted}`;
case ERR_FS_EISDIR:
return `[ERR_FS_EISDIR]: Path is a directory: ${func} returned EISDIR (is a directory) ${path}`;
default:
return `${errorCode}: error occurred, ${func}${pathFormatted}`;
}
}
function createError(errorCode, func = '', path = '', path2 = '', Constructor = Error) {
const error = new Constructor(formatError(errorCode, func, path, path2));
error.code = errorCode;
if (path) {
error.path = path;
}
return error;
}
// ---------------------------------------- Flags
// List of file `flags` as defined by Node.
var FLAGS;
(function (FLAGS) {
// Open file for reading. An exception occurs if the file does not exist.
FLAGS[FLAGS["r"] = O_RDONLY] = "r";
// Open file for reading and writing. An exception occurs if the file does not exist.
FLAGS[FLAGS["r+"] = O_RDWR] = "r+";
// Open file for reading in synchronous mode. Instructs the operating system to bypass the local file system cache.
FLAGS[FLAGS["rs"] = O_RDONLY | O_SYNC] = "rs";
FLAGS[FLAGS["sr"] = FLAGS.rs] = "sr";
// Open file for reading and writing, telling the OS to open it synchronously. See notes for 'rs' about using this with caution.
FLAGS[FLAGS["rs+"] = O_RDWR | O_SYNC] = "rs+";
FLAGS[FLAGS["sr+"] = FLAGS['rs+']] = "sr+";
// Open file for writing. The file is created (if it does not exist) or truncated (if it exists).
FLAGS[FLAGS["w"] = O_WRONLY | O_CREAT | O_TRUNC] = "w";
// Like 'w' but fails if path exists.
FLAGS[FLAGS["wx"] = O_WRONLY | O_CREAT | O_TRUNC | O_EXCL] = "wx";
FLAGS[FLAGS["xw"] = FLAGS.wx] = "xw";
// Open file for reading and writing. The file is created (if it does not exist) or truncated (if it exists).
FLAGS[FLAGS["w+"] = O_RDWR | O_CREAT | O_TRUNC] = "w+";
// Like 'w+' but fails if path exists.
FLAGS[FLAGS["wx+"] = O_RDWR | O_CREAT | O_TRUNC | O_EXCL] = "wx+";
FLAGS[FLAGS["xw+"] = FLAGS['wx+']] = "xw+";
// Open file for appending. The file is created if it does not exist.
FLAGS[FLAGS["a"] = O_WRONLY | O_APPEND | O_CREAT] = "a";
// Like 'a' but fails if path exists.
FLAGS[FLAGS["ax"] = O_WRONLY | O_APPEND | O_CREAT | O_EXCL] = "ax";
FLAGS[FLAGS["xa"] = FLAGS.ax] = "xa";
// Open file for reading and appending. The file is created if it does not exist.
FLAGS[FLAGS["a+"] = O_RDWR | O_APPEND | O_CREAT] = "a+";
// Like 'a+' but fails if path exists.
FLAGS[FLAGS["ax+"] = O_RDWR | O_APPEND | O_CREAT | O_EXCL] = "ax+";
FLAGS[FLAGS["xa+"] = FLAGS['ax+']] = "xa+";
})(FLAGS = exports.FLAGS || (exports.FLAGS = {}));
function flagsToNumber(flags) {
if (typeof flags === 'number')
return flags;
if (typeof flags === 'string') {
const flagsNum = FLAGS[flags];
if (typeof flagsNum !== 'undefined')
return flagsNum;
}
// throw new TypeError(formatError(ERRSTR_FLAG(flags)));
throw new errors.TypeError('ERR_INVALID_OPT_VALUE', 'flags', flags);
}
exports.flagsToNumber = flagsToNumber;
// ---------------------------------------- Options
function getOptions(defaults, options) {
let opts;
if (!options)
return defaults;
else {
const tipeof = typeof options;
switch (tipeof) {
case 'string':
opts = Object.assign({}, defaults, { encoding: options });
break;
case 'object':
opts = Object.assign({}, defaults, options);
break;
default:
throw TypeError(ERRSTR_OPTS(tipeof));
}
}
if (opts.encoding !== 'buffer')
(0, encoding_1.assertEncoding)(opts.encoding);
return opts;
}
function optsGenerator(defaults) {
return options => getOptions(defaults, options);
}
function validateCallback(callback) {
if (typeof callback !== 'function')
throw TypeError(ERRSTR.CB);
return callback;
}
function optsAndCbGenerator(getOpts) {
return (options, callback) => typeof options === 'function' ? [getOpts(), options] : [getOpts(options), validateCallback(callback)];
}
const optsDefaults = {
encoding: 'utf8',
};
const getDefaultOpts = optsGenerator(optsDefaults);
const getDefaultOptsAndCb = optsAndCbGenerator(getDefaultOpts);
const readFileOptsDefaults = {
flag: 'r',
};
const getReadFileOptions = optsGenerator(readFileOptsDefaults);
const writeFileDefaults = {
encoding: 'utf8',
mode: 438 /* MODE.DEFAULT */,
flag: FLAGS[FLAGS.w],
};
const getWriteFileOptions = optsGenerator(writeFileDefaults);
const appendFileDefaults = {
encoding: 'utf8',
mode: 438 /* MODE.DEFAULT */,
flag: FLAGS[FLAGS.a],
};
const getAppendFileOpts = optsGenerator(appendFileDefaults);
const getAppendFileOptsAndCb = optsAndCbGenerator(getAppendFileOpts);
const realpathDefaults = optsDefaults;
const getRealpathOptions = optsGenerator(realpathDefaults);
const getRealpathOptsAndCb = optsAndCbGenerator(getRealpathOptions);
const mkdirDefaults = {
mode: 511 /* MODE.DIR */,
recursive: false,
};
const getMkdirOptions = (options) => {
if (typeof options === 'number')
return Object.assign({}, mkdirDefaults, { mode: options });
return Object.assign({}, mkdirDefaults, options);
};
const rmdirDefaults = {
recursive: false,
};
const getRmdirOptions = (options) => {
return Object.assign({}, rmdirDefaults, options);
};
const getRmOpts = optsGenerator(optsDefaults);
const getRmOptsAndCb = optsAndCbGenerator(getRmOpts);
const readdirDefaults = {
encoding: 'utf8',
withFileTypes: false,
};
const getReaddirOptions = optsGenerator(readdirDefaults);
const getReaddirOptsAndCb = optsAndCbGenerator(getReaddirOptions);
const statDefaults = {
bigint: false,
};
const getStatOptions = (options = {}) => Object.assign({}, statDefaults, options);
const getStatOptsAndCb = (options, callback) => typeof options === 'function' ? [getStatOptions(), options] : [getStatOptions(options), validateCallback(callback)];
// ---------------------------------------- Utility functions
function getPathFromURLPosix(url) {
if (url.hostname !== '') {
throw new errors.TypeError('ERR_INVALID_FILE_URL_HOST', process_1.default.platform);
}
const pathname = url.pathname;
for (let n = 0; n < pathname.length; n++) {
if (pathname[n] === '%') {
const third = pathname.codePointAt(n + 2) | 0x20;
if (pathname[n + 1] === '2' && third === 102) {
throw new errors.TypeError('ERR_INVALID_FILE_URL_PATH', 'must not include encoded / characters');
}
}
}
return decodeURIComponent(pathname);
}
function pathToFilename(path) {
if (typeof path !== 'string' && !buffer_1.Buffer.isBuffer(path)) {
try {
if (!(path instanceof require('url').URL))
throw new TypeError(ERRSTR.PATH_STR);
}
catch (err) {
throw new TypeError(ERRSTR.PATH_STR);
}
path = getPathFromURLPosix(path);
}
const pathString = String(path);
nullCheck(pathString);
// return slash(pathString);
return pathString;
}
exports.pathToFilename = pathToFilename;
let resolve = (filename, base = process_1.default.cwd()) => resolveCrossPlatform(base, filename);
if (isWin) {
const _resolve = resolve;
const { unixify } = require('fs-monkey/lib/correctPath');
resolve = (filename, base) => unixify(_resolve(filename, base));
}
function filenameToSteps(filename, base) {
const fullPath = resolve(filename, base);
const fullPathSansSlash = fullPath.substring(1);
if (!fullPathSansSlash)
return [];
return fullPathSansSlash.split(sep);
}
exports.filenameToSteps = filenameToSteps;
function pathToSteps(path) {
return filenameToSteps(pathToFilename(path));
}
exports.pathToSteps = pathToSteps;
function dataToStr(data, encoding = encoding_1.ENCODING_UTF8) {
if (buffer_1.Buffer.isBuffer(data))
return data.toString(encoding);
else if (data instanceof Uint8Array)
return (0, buffer_1.bufferFrom)(data).toString(encoding);
else
return String(data);
}
exports.dataToStr = dataToStr;
function dataToBuffer(data, encoding = encoding_1.ENCODING_UTF8) {
if (buffer_1.Buffer.isBuffer(data))
return data;
else if (data instanceof Uint8Array)
return (0, buffer_1.bufferFrom)(data);
else
return (0, buffer_1.bufferFrom)(String(data), encoding);
}
exports.dataToBuffer = dataToBuffer;
function bufferToEncoding(buffer, encoding) {
if (!encoding || encoding === 'buffer')
return buffer;
else
return buffer.toString(encoding);
}
exports.bufferToEncoding = bufferToEncoding;
function nullCheck(path, callback) {
if (('' + path).indexOf('\u0000') !== -1) {
const er = new Error('Path must be a string without null bytes');
er.code = ENOENT;
if (typeof callback !== 'function')
throw er;
process_1.default.nextTick(callback, er);
return false;
}
return true;
}
function _modeToNumber(mode, def) {
if (typeof mode === 'number')
return mode;
if (typeof mode === 'string')
return parseInt(mode, 8);
if (def)
return modeToNumber(def);
return undefined;
}
function modeToNumber(mode, def) {
const result = _modeToNumber(mode, def);
if (typeof result !== 'number' || isNaN(result))
throw new TypeError(ERRSTR.MODE_INT);
return result;
}
function isFd(path) {
return path >>> 0 === path;
}
function validateFd(fd) {
if (!isFd(fd))
throw TypeError(ERRSTR.FD);
}
// converts Date or number to a fractional UNIX timestamp
function toUnixTimestamp(time) {
// tslint:disable-next-line triple-equals
if (typeof time === 'string' && +time == time) {
return +time;
}
if (time instanceof Date) {
return time.getTime() / 1000;
}
if (isFinite(time)) {
if (time < 0) {
return Date.now() / 1000;
}
return time;
}
throw new Error('Cannot parse time: ' + time);
}
exports.toUnixTimestamp = toUnixTimestamp;
function validateUid(uid) {
if (typeof uid !== 'number')
throw TypeError(ERRSTR.UID);
}
function validateGid(gid) {
if (typeof gid !== 'number')
throw TypeError(ERRSTR.GID);
}
function flattenJSON(nestedJSON) {
const flatJSON = {};
function flatten(pathPrefix, node) {
for (const path in node) {
const contentOrNode = node[path];
const joinedPath = join(pathPrefix, path);
if (typeof contentOrNode === 'string') {
flatJSON[joinedPath] = contentOrNode;
}
else if (typeof contentOrNode === 'object' && contentOrNode !== null && Object.keys(contentOrNode).length > 0) {
// empty directories need an explicit entry and therefore get handled in `else`, non-empty ones are implicitly considered
flatten(joinedPath, contentOrNode);
}
else {
// without this branch null, empty-object or non-object entries would not be handled in the same way
// by both fromJSON() and fromNestedJSON()
flatJSON[joinedPath] = null;
}
}
}
flatten('', nestedJSON);
return flatJSON;
}
/**
* `Volume` represents a file system.
*/
class Volume {
static fromJSON(json, cwd) {
const vol = new Volume();
vol.fromJSON(json, cwd);
return vol;
}
static fromNestedJSON(json, cwd) {
const vol = new Volume();
vol.fromNestedJSON(json, cwd);
return vol;
}
get promises() {
if (this.promisesApi === null)
throw new Error('Promise is not supported in this environment.');
return this.promisesApi;
}
constructor(props = {}) {
// I-node number counter.
this.ino = 0;
// A mapping for i-node numbers to i-nodes (`Node`);
this.inodes = {};
// List of released i-node numbers, for reuse.
this.releasedInos = [];
// A mapping for file descriptors to `File`s.
this.fds = {};
// A list of reusable (opened and closed) file descriptors, that should be
// used first before creating a new file descriptor.
this.releasedFds = [];
// Max number of open files.
this.maxFiles = 10000;
// Current number of open files.
this.openFiles = 0;
this.promisesApi = (0, promises_1.createPromisesApi)(this);
this.statWatchers = {};
this.props = Object.assign({ Node: node_1.Node, Link: node_1.Link, File: node_1.File }, props);
const root = this.createLink();
root.setNode(this.createNode(true));
const self = this; // tslint:disable-line no-this-assignment
this.StatWatcher = class extends StatWatcher {
constructor() {
super(self);
}
};
const _ReadStream = FsReadStream;
this.ReadStream = class extends _ReadStream {
constructor(...args) {
super(self, ...args);
}
};
const _WriteStream = FsWriteStream;
this.WriteStream = class extends _WriteStream {
constructor(...args) {
super(self, ...args);
}
};
this.FSWatcher = class extends FSWatcher {
constructor() {
super(self);
}
};
root.setChild('.', root);
root.getNode().nlink++;
root.setChild('..', root);
root.getNode().nlink++;
this.root = root;
}
createLink(parent, name, isDirectory = false, perm) {
if (!parent) {
return new this.props.Link(this, null, '');
}
if (!name) {
throw new Error('createLink: name cannot be empty');
}
return parent.createChild(name, this.createNode(isDirectory, perm));
}
deleteLink(link) {
const parent = link.parent;
if (parent) {
parent.deleteChild(link);
return true;
}
return false;
}
newInoNumber() {
const releasedFd = this.releasedInos.pop();
if (releasedFd)
return releasedFd;
else {
this.ino = (this.ino + 1) % 0xffffffff;
return this.ino;
}
}
newFdNumber() {
const releasedFd = this.releasedFds.pop();
return typeof releasedFd === 'number' ? releasedFd : Volume.fd--;
}
createNode(isDirectory = false, perm) {
const node = new this.props.Node(this.newInoNumber(), perm);
if (isDirectory)
node.setIsDirectory();
this.inodes[node.ino] = node;
return node;
}
getNode(ino) {
return this.inodes[ino];
}
deleteNode(node) {
node.del();
delete this.inodes[node.ino];
this.releasedInos.push(node.ino);
}
// Generates 6 character long random string, used by `mkdtemp`.
genRndStr() {
const str = (Math.random() + 1).toString(36).substring(2, 8);
if (str.length === 6)
return str;
else
return this.genRndStr();
}
// Returns a `Link` (hard link) referenced by path "split" into steps.
getLink(steps) {
return this.root.walk(steps);
}
// Just link `getLink`, but throws a correct user error, if link to found.
getLinkOrThrow(filename, funcName) {
const steps = filenameToSteps(filename);
const link = this.getLink(steps);
if (!link)
throw createError(ENOENT, funcName, filename);
return link;
}
// Just like `getLink`, but also dereference/resolves symbolic links.
getResolvedLink(filenameOrSteps) {
let steps = typeof filenameOrSteps === 'string' ? filenameToSteps(filenameOrSteps) : filenameOrSteps;
let link = this.root;
let i = 0;
while (i < steps.length) {
const step = steps[i];
link = link.getChild(step);
if (!link)
return null;
const node = link.getNode();
if (node.isSymlink()) {
steps = node.symlink.concat(steps.slice(i + 1));
link = this.root;
i = 0;
continue;
}
i++;
}
return link;
}
// Just like `getLinkOrThrow`, but also dereference/resolves symbolic links.
getResolvedLinkOrThrow(filename, funcName) {
const link = this.getResolvedLink(filename);
if (!link)
throw createError(ENOENT, funcName, filename);
return link;
}
resolveSymlinks(link) {
// let node: Node = link.getNode();
// while(link && node.isSymlink()) {
// link = this.getLink(node.symlink);
// if(!link) return null;
// node = link.getNode();
// }
// return link;
return this.getResolvedLink(link.steps.slice(1));
}
// Just like `getLinkOrThrow`, but also verifies that the link is a directory.
getLinkAsDirOrThrow(filename, funcName) {
const link = this.getLinkOrThrow(filename, funcName);
if (!link.getNode().isDirectory())
throw createError(ENOTDIR, funcName, filename);
return link;
}
// Get the immediate parent directory of the link.
getLinkParent(steps) {
return this.root.walk(steps, steps.length - 1);
}
getLinkParentAsDirOrThrow(filenameOrSteps, funcName) {
const steps = filenameOrSteps instanceof Array ? filenameOrSteps : filenameToSteps(filenameOrSteps);
const link = this.getLinkParent(steps);
if (!link)
throw createError(ENOENT, funcName, sep + steps.join(sep));
if (!link.getNode().isDirectory())
throw createError(ENOTDIR, funcName, sep + steps.join(sep));
return link;
}
getFileByFd(fd) {
return this.fds[String(fd)];
}
getFileByFdOrThrow(fd, funcName) {
if (!isFd(fd))
throw TypeError(ERRSTR.FD);
const file = this.getFileByFd(fd);
if (!file)
throw createError(EBADF, funcName);
return file;
}
/**
* @todo This is not used anymore. Remove.
*/
/*
private getNodeByIdOrCreate(id: TFileId, flags: number, perm: number): Node {
if (typeof id === 'number') {
const file = this.getFileByFd(id);
if (!file) throw Error('File nto found');
return file.node;
} else {
const steps = pathToSteps(id as PathLike);
let link = this.getLink(steps);
if (link) return link.getNode();
// Try creating a node if not found.
if (flags & O_CREAT) {
const dirLink = this.getLinkParent(steps);
if (dirLink) {
const name = steps[steps.length - 1];
link = this.createLink(dirLink, name, false, perm);
return link.getNode();
}
}
throw createError(ENOENT, 'getNodeByIdOrCreate', pathToFilename(id));
}
}
*/
wrapAsync(method, args, callback) {
validateCallback(callback);
(0, setImmediate_1.default)(() => {
let result;
try {
result = method.apply(this, args);
}
catch (err) {
callback(err);
return;
}
callback(null, result);
});
}
_toJSON(link = this.root, json = {}, path) {
let isEmpty = true;
let children = link.children;
if (link.getNode().isFile()) {
children = { [link.getName()]: link.parent.getChild(link.getName()) };
link = link.parent;
}
for (const name in children) {
if (name === '.' || name === '..') {
continue;
}
isEmpty = false;
const child = link.getChild(name);
if (!child) {
throw new Error('_toJSON: unexpected undefined');
}
const node = child.getNode();
if (node.isFile()) {
let filename = child.getPath();
if (path)
filename = relative(path, filename);
json[filename] = node.getString();
}
else if (node.isDirectory()) {
this._toJSON(child, json, path);
}
}
let dirPath = link.getPath();
if (path)
dirPath = relative(path, dirPath);
if (dirPath && isEmpty) {
json[dirPath] = null;
}
return json;
}
toJSON(paths, json = {}, isRelative = false) {
const links = [];
if (paths) {
if (!(paths instanceof Array))
paths = [paths];
for (const path of paths) {
const filename = pathToFilename(path);
const link = this.getResolvedLink(filename);
if (!link)
continue;
links.push(link);
}
}
else {
links.push(this.root);
}
if (!links.length)
return json;
for (const link of links)
this._toJSON(link, json, isRelative ? link.getPath() : '');
return json;
}
// TODO: `cwd` should probably not invoke `process.cwd()`.
fromJSON(json, cwd = process_1.default.cwd()) {
for (let filename in json) {
const data = json[filename];
filename = resolve(filename, cwd);
if (typeof data === 'string') {
const dir = dirname(filename);
this.mkdirpBase(dir, 511 /* MODE.DIR */);
this.writeFileSync(filename, data);
}
else {
this.mkdirpBase(filename, 511 /* MODE.DIR */);
}
}
}
fromNestedJSON(json, cwd) {
this.fromJSON(flattenJSON(json), cwd);
}
reset() {
this.ino = 0;
this.inodes = {};
this.releasedInos = [];
this.fds = {};
this.releasedFds = [];
this.openFiles = 0;
this.root = this.createLink();
this.root.setNode(this.createNode(true));
}
// Legacy interface
mountSync(mountpoint, json) {
this.fromJSON(json, mountpoint);
}
openLink(link, flagsNum, resolveSymlinks = true) {
if (this.openFiles >= this.maxFiles) {
// Too many open files.
throw createError(EMFILE, 'open', link.getPath());
}
// Resolve symlinks.
let realLink = link;
if (resolveSymlinks)
realLink = this.resolveSymlinks(link);
if (!realLink)
throw createError(ENOENT, 'open', link.getPath());
const node = realLink.getNode();
// Check whether node is a directory
if (node.isDirectory()) {
if ((flagsNum & (O_RDONLY | O_RDWR | O_WRONLY)) !== O_RDONLY)
throw createError(EISDIR, 'open', link.getPath());
}
else {
if (flagsNum & O_DIRECTORY)
throw createError(ENOTDIR, 'open', link.getPath());
}
// Check node permissions
if (!(flagsNum & O_WRONLY)) {
if (!node.canRead()) {
throw createError(EACCES, 'open', link.getPath());
}
}
if (flagsNum & O_RDWR) {
}
const file = new this.props.File(link, node, flagsNum, this.newFdNumber());
this.fds[file.fd] = file;
this.openFiles++;
if (flagsNum & O_TRUNC)
file.truncate();
return file;
}
openFile(filename, flagsNum, modeNum, resolveSymlinks = true) {
const steps = filenameToSteps(filename);
let link = resolveSymlinks ? this.getResolvedLink(steps) : this.getLink(steps);
if (link && flagsNum & O_EXCL)
throw createError(EEXIST, 'open', filename);
// Try creating a new file, if it does not exist.
if (!link && flagsNum & O_CREAT) {
// const dirLink: Link = this.getLinkParent(steps);
const dirLink = this.getResolvedLink(steps.slice(0, steps.length - 1));
// if(!dirLink) throw createError(ENOENT, 'open', filename);
if (!dirLink)
throw createError(ENOENT, 'open', sep + steps.join(sep));
if (flagsNum & O_CREAT && typeof modeNum === 'number') {
link = this.createLink(dirLink, steps[steps.length - 1], false, modeNum);
}
}
if (link)
return this.openLink(link, flagsNum, resolveSymlinks);
throw createError(ENOENT, 'open', filename);
}
openBase(filename, flagsNum, modeNum, resolveSymlinks = true) {
const file = this.openFile(filename, flagsNum, modeNum, resolveSymlinks);
if (!file)
throw createError(ENOENT, 'open', filename);
return file.fd;
}
openSync(path, flags, mode = 438 /* MODE.DEFAULT */) {
// Validate (1) mode; (2) path; (3) flags - in that order.
const modeNum = modeToNumber(mode);
const fileName = pathToFilename(path);
const flagsNum = flagsToNumber(flags);
return this.openBase(fileName, flagsNum, modeNum);
}
open(path, flags, a, b) {
let mode = a;
let callback = b;
if (typeof a === 'function') {
mode = 438 /* MODE.DEFAULT */;
callback = a;
}
mode = mode || 438 /* MODE.DEFAULT */;
const modeNum = modeToNumber(mode);
const fileName = pathToFilename(path);
const flagsNum = flagsToNumber(flags);
this.wrapAsync(this.openBase, [fileName, flagsNum, modeNum], callback);
}
closeFile(file) {
if (!this.fds[file.fd])
return;
this.openFiles--;
delete this.fds[file.fd];
this.releasedFds.push(file.fd);
}
closeSync(fd) {
validateFd(fd);
const file = this.getFileByFdOrThrow(fd, 'close');
this.closeFile(file);
}
close(fd, callback) {
validateFd(fd);
this.wrapAsync(this.closeSync, [fd], callback);
}
openFileOrGetById(id, flagsNum, modeNum) {
if (typeof id === 'number') {
const file = this.fds[id];
if (!file)
throw createError(ENOENT);
return file;
}
else {
return this.openFile(pathToFilename(id), flagsNum, modeNum);
}
}
readBase(fd, buffer, offset, length, position) {
const file = this.getFileByFdOrThrow(fd);
return file.read(buffer, Number(offset), Number(length), position);
}
readSync(fd, buffer, offset, length, position) {
validateFd(fd);
return this.readBase(fd, buffer, offset, length, position);
}
read(fd, buffer, offset, length, position, callback) {
validateCallback(callback);
// This `if` branch is from Node.js
if (length === 0) {
return process_1.default.nextTick(() => {
if (callback)
callback(null, 0, buffer);
});
}
(0, setImmediate_1.default)(() => {
try {
const bytes = this.readBase(fd, buffer, offset, length, position);
callback(null, bytes, buffer);
}
catch (err) {
callback(err);
}
});
}
readFileBase(id, flagsNum, encoding) {
let result;
const isUserFd = typeof id === 'number';
const userOwnsFd = isUserFd && isFd(id);
let fd;
if (userOwnsFd)
fd = id;
else {
const filename = pathToFilename(id);
const steps = filenameToSteps(filename);
const link = this.getResolvedLink(steps);
if (link) {
const node = link.getNode();
if (node.isDirectory())
throw createError(EISDIR, 'open', link.getPath());
}
fd = this.openSync(id, flagsNum);
}
try {
result = bufferToEncoding(this.getFileByFdOrThrow(fd).getBuffer(), encoding);
}
finally {
if (!userOwnsFd) {
this.closeSync(fd);
}
}
return result;
}
readFileSync(file, options) {
const opts = getReadFileOptions(options);
const flagsNum = flagsToNumber(opts.flag);
return this.readFileBase(file, flagsNum, opts.encoding);
}
readFile(id, a, b) {
const [opts, callback] = optsAndCbGenerator(getReadFileOptions)(a, b);
const flagsNum = flagsToNumber(opts.flag);
this.wrapAsync(this.readFileBase, [id, flagsNum, opts.encoding], callback);
}
writeBase(fd, buf, offset, length, position) {
const file = this.getFileByFdOrThrow(fd, 'write');
return file.write(buf, offset, length, position);
}
writeSync(fd, a, b, c, d) {
validateFd(fd);
let encoding;
let offset;
let length;
let position;
const isBuffer = typeof a !== 'string';
if (isBuffer) {
offset = (b || 0) | 0;
length = c;
position = d;
}
else {
position = b;
encoding = c;
}
const buf = dataToBuffer(a, encoding);
if (isBuffer) {
if (typeof length === 'undefined') {
length = buf.length;
}
}
else {
offset = 0;
length = buf.length;
}
return this.writeBase(fd, buf, offset, length, position);
}
write(fd, a, b, c, d, e) {
validateFd(fd);
let offset;
let length;
let position;
let encoding;
let callback;
const tipa = typeof a;
const tipb = typeof b;
const tipc = typeof c;
const tipd = typeof d;
if (tipa !== 'string') {
if (tipb === 'function') {
callback = b;
}
else if (tipc === 'function') {
offset = b | 0;
callback = c;
}
else if (tipd === 'function') {
offset = b | 0;
length = c;
callback = d;
}
else {
offset = b | 0;
length = c;
position = d;
callback = e;
}
}
else {
if (tipb === 'function') {
callback = b;
}
else if (tipc === 'function') {
position = b;
callback = c;
}
else if (tipd === 'function') {
position = b;
encoding = c;
callback = d;
}
}
const buf = dataToBuffer(a, encoding);
if (tipa !== 'string') {
if (typeof length === 'undefined')
length = buf.length;
}
else {
offset = 0;
length = buf.length;
}
const cb = validateCallback(callback);
(0, setImmediate_1.default)(() => {
try {
const bytes = this.writeBase(fd, buf, offset, length, position);
if (tipa !== 'string') {
cb(null, bytes, buf);
}
else {
cb(null, bytes, a);
}
}
catch (err) {
cb(err);
}
});
}
writeFileBase(id, buf, flagsNum, modeNum) {
// console.log('writeFileBase', id, buf, flagsNum, modeNum);
// const node = this.getNodeByIdOrCreate(id, flagsNum, modeNum);
// node.setBuffer(buf);
const isUserFd = typeof id === 'number';
let fd;
if (isUserFd)
fd = id;
else {
fd = this.openBase(pathToFilename(id), flagsNum, modeNum);
// fd = this.openSync(id as PathLike, flagsNum, modeNum);
}
let offset = 0;
let length = buf.length;
let position = flagsNum & O_APPEND ? undefined : 0;
try {
while (length > 0) {
const written = this.writeSync(fd, buf, offset, length, position);
offset += written;
length -= written;
if (position !== undefined)
position += written;
}
}
finally {
if (!isUserFd)
this.closeSync(fd);
}
}
writeFileSync(id, data, options) {
const opts = getWriteFileOptions(options);
const flagsNum = flagsToNumber(opts.flag);
const modeNum = modeToNumber(opts.mode);
const buf = dataToBuffer(data, opts.encoding);
this.writeFileBase(id, buf, flagsNum, modeNum);
}
writeFile(id, data, a, b) {
let options = a;
let callback = b;
if (typeof a === 'function') {
options = writeFileDefaults;
callback = a;
}
const cb = validateCallback(callback);
const opts = getWriteFileOptions(options);
const flagsNum = flagsToNumber(opts.flag);
const modeNum = modeToNumber(opts.mode);
const buf = dataToBuffer(data, opts.encoding);
this.wrapAsync(this.writeFileBase, [id, buf, flagsNum, modeNum], cb);
}
linkBase(filename1, filename2) {
const steps1 = filenameToSteps(filename1);
const link1 = this.getLink(steps1);
if (!link1)
throw createError(ENOENT, 'link', filename1, filename2);
const steps2 = filenameToSteps(filename2);
// Check new link directory exists.
const dir2 = this.getLinkParent(steps2);
if (!dir2)
throw createError(ENOENT, 'link', filename1, filename2);
const name = steps2[steps2.length - 1];
// Check if new file already exists.
if (dir2.getChild(name))
throw createError(EEXIST, 'link', filename1, filename2);
const node = link1.getNode();
node.nlink++;
dir2.createChild(name, node);
}
copyFileBase(src, dest, flags) {
const buf = this.readFileSync(src);
if (flags & COPYFILE_EXCL) {
if (this.existsSync(dest)) {
throw createError(EEXIST, 'copyFile', src, dest);
}
}
if (flags & COPYFILE_FICLONE_FORCE) {
throw createError(ENOSYS, 'copyFile', src, dest);
}
this.writeFileBase(dest, buf, FLAGS.w, 438 /* MODE.DEFAULT */);
}
copyFileSync(src, dest, flags) {
const srcFilename = pathToFilename(src);
const destFilename = pathToFilename(dest);
return this.copyFileBase(srcFilename, destFilename, (flags || 0) | 0);
}
copyFile(src, dest, a, b) {
const srcFilename = pathToFilename(src);
const destFilename = pathToFilename(dest);
let flags;
let callback;
if (typeof a === 'function') {
flags = 0;
callback = a;
}
else {
flags = a;
callback = b;
}
validateCallback(callback);
this.wrapAsync(this.copyFileBase, [srcFilename, destFilename, flags], callback);
}
linkSync(existingPath, newPath) {
const existingPathFilename = pathToFilename(existingPath);
const newPathFilename = pathToFilename(newPath);
this.linkBase(existingPathFilename, newPathFilename);
}
link(existingPath, newPath, callback) {
const existingPathFilename = pathToFilename(existingPath);
const newPathFilename = pathToFilename(newPath);
this.wrapAsync(this.linkBase, [existingPathFilename, newPathFilename], callback);
}
unlinkBase(filename) {
const steps = filenameToSteps(filename);
const link = this.getLink(steps);
if (!link)
throw createError(ENOENT, 'unlink', filename);
// TODO: Check if it is file, dir, other...
if (link.length)
throw Error('Dir not empty...');
this.deleteLink(link);
const node = link.getNode();
node.nlink--;
// When all hard links to i-node are deleted, remove the i-node, too.
if (node.nlink <= 0) {
this.deleteNode(node);
}
}
unlinkSync(path) {
const filename = pathToFilename(path);
this.unlinkBase(filename);
}
unlink(path, callback) {
const filename = pathToFilename(path);
this.wrapAsync(this.unlinkBase, [filename], callback);
}
symlinkBase(targetFilename, pathFilename) {
const pathSteps = filenameToSteps(pathFilename);
// Check if directory exists, where we about to create a symlink.
const dirLink = this.getLinkParent(pathSteps);
if (!dirLink)
throw createError(ENOENT, 'symlink', targetFilename, pathFilename);
const name = pathSteps[pathSteps.length - 1];
// Check if new file already exists.
if (dirLink.getChild(name))
throw createError(EEXIST, 'symlink', targetFilename, pathFilename);
// Create symlink.
const symlink = dirLink.createChild(name);
symlink.getNode().makeSymlink(filenameToSteps(targetFilename));
return symlink;
}
// `type` argument works only on Windows.
symlinkSync(target, path, type) {
const targetFilename = pathToFilename(target);
const pathFilename = pathToFilename(path);
this.symlinkBase(targetFilename, pathFilename);
}
symlink(target, path, a, b) {
const callback = validateCallback(typeof a === 'function' ? a : b);
const targetFilename = pathToFilename(target);
const pathFilename = pathToFilename(path);
this.wrapAsync(this.symlinkBase, [targetFilename, pathFilename], callback);
}
realpathBase(filename, encoding) {
const steps = filenameToSteps(filename);
const realLink = this.getResolvedLink(steps);
if (!realLink)
throw createError(ENOENT, 'realpath', filename);
return (0, encoding_1.strToEncoding)(realLink.getPath() || '/', encoding);
}
realpathSync(path, options) {
return this.realpathBase(pathToFilename(path), getRealpathOptions(options).encoding);
}
realpath(path, a, b) {
const [opts, callback] = getRealpathOptsAndCb(a, b);
const pathFilename = pathToFilename(path);
this.wrapAsync(this.realpathBase, [pathFilename, opts.encoding], callback);
}
lstatBase(filename, bigint = false, throwIfNoEntry = false) {
const link = this.getLink(filenameToSteps(filename));
if (link) {
return Stats_1.default.build(link.getNode(), bigint);
}
else if (!throwIfNoEntry) {
return undefined;
}
else {
throw createError(ENOENT, 'lstat', filename);
}
}
lstatSync(path, options) {
const { throwIfNoEntry = true, bigint = false } = getStatOptions(options);
return this.lstatBase(pathToFilename(path), bigint, throwIfNoEntry);
}
lstat(path, a, b) {
const [{ throwIfNoEntry = true, bigint = false }, callback] = getStatOptsAndCb(a, b);
this.wrapAsync(this.lstatBase, [pathToFilename(path), bigint, throwIfNoEntry], callback);
}
statBase(filename, bigint = false, throwIfNoEntry = true) {
const link = this.getResolvedLink(filenameToSteps(filename));
if (link) {
return Stats_1.default.build(link.getNode(), bigint);
}
else if (!throwIfNoEntry) {
return undefined;
}
else {
throw createError(ENOENT, 'stat', filename);
}
}
statSync(path, options) {
const { bigint = true, throwIfNoEntry = true } = getStatOptions(options);
return this.statBase(pathToFilename(path), bigint, throwIfNoEntry);
}
stat(path, a, b) {
const [{ bigint = false, throwIfNoEntry = true }, callback] = getStatOptsAndCb(a, b);
this.wrapAsync(this.statBase, [pathToFilename(path), bigint, throwIfNoEntry], callback);
}
fstatBase(fd, bigint = false) {
const file = this.getFileByFd(fd);
if (!file)
throw createError(EBADF, 'fstat');
return Stats_1.default.build(file.node, bigint);
}
fstatSync(fd, options) {
return this.fstatBase(fd, getStatOptions(options).bigint);
}
fstat(fd, a, b) {
const [opts, callback] = getStatOptsAndCb(a, b);
this.wrapAsync(this.fstatBase, [fd, opts.bigint], callback);
}
renameBase(oldPathFilename, newPathFilename) {
const link = this.getLink(filenameToSteps(oldPathFilename));
if (!link)
throw createError(ENOENT, 'rename', oldPathFilename, newPathFilename);
// TODO: Check if it is directory, if non-empty, we cannot move it, right?
const newPathSteps = filenameToSteps(newPathFilename);
// Check directory exists for the new location.
const newPathDirLink = this.getLinkParent(newPathSteps);
if (!newPathDirLink)
throw createError(ENOENT, 'rename', oldPathFilename, newPathFilename);
// TODO: Also treat cases with directories and symbolic links.
// TODO: See: http://man7.org/linux/man-pages/man2/rename.2.html
// Remove hard link from old folder.
const oldLinkParent = link.parent;
if (oldLinkParent) {
oldLinkParent.deleteChild(link);
}
// Rename should overwrite the new path, if that exists.
const name = newPathSteps[newPathSteps.length - 1];
link.name = name;
link.steps = [...newPathDirLink.steps, name];
newPathDirLink.setChild(link.getName(), link);
}
renameSync(oldPath, newPath) {
const oldPathFilename = pathToFilename(oldPath);
const newPathFilename = pathToFilename(newPath);
this.renameBase(oldPathFilename, newPathFilename);
}
rename(oldPath, newPath, callback) {
const oldPathFilename = pathToFilename(oldPath);
const newPathFilename = pathToFilename(newPath);
this.wrapAsync(this.renameBase, [oldPathFilename, newPathFilename], callback);
}
existsBase(filename) {
return !!this.statBase(filename);
}
existsSync(path) {
try {
return this.existsBase(pathToFilename(path));
}
catch (err) {
return false;
}
}
exists(path, callback) {
const filename = pathToFilename(path);
if (typeof callback !== 'function')
throw Error(ERRSTR.CB);
(0, setImmediate_1.default)(() => {
try {
callback(this.existsBase(filename));
}
catch (err) {
callback(false);
}
});
}
accessBase(filename, mode) {
const link = this.getLinkOrThrow(filename, 'access');
// TODO: Verify permissions
}
accessSync(path, mode = F_OK) {
const filename = pathToFilename(path);
mode = mode | 0;
this.accessBase(filename, mode);
}
access(path, a, b) {
let mode = F_OK;
let callback;
if (typeof a !== 'function') {
mode = a | 0; // cast to number
callback = validateCallback(b);
}
else {
callback = a;
}
const filename = pathToFilename(path);
this.wrapAsync(this.accessBase, [filename, mode], callback);
}
appendFileSync(id, data, options = appendFileDefaults) {
const opts = getAppendFileOpts(options);
// force append behavior when using a supplied file descriptor
if (!opts.flag || isFd(id))
opts.flag = 'a';
this.writeFileSync(id, data, opts);
}
appendFile(id, data, a, b) {
const [opts, callback] = getAppendFileOptsAndCb(a, b);
// force append behavior when using a supplied file descriptor
if (!opts.flag || isFd(id))
opts.flag = 'a';
this.writeFile(id, data, opts, callback);
}
readdirBase(filename, options) {
const steps = filenameToSteps(filename);
const link = this.getResolvedLink(steps);
if (!link)
throw createError(ENOENT, 'readdir', filename);
const node = link.getNode();
if (!node.isDirectory())
throw createError(ENOTDIR, 'scandir', filename);
if (options.withFileTypes) {
const list = [];
for (const name in link.children) {
const child = link.getChild(name);
if (!child || name === '.' || name === '..') {
continue;
}
list.push(Dirent_1.default.build(child, options.encoding));
}
if (!isWin && options.encoding !== 'buffer')
list.sort((a, b) => {
if (a.name < b.name)
return -1;
if (a.name > b.name)
return 1;
return 0;
});
return list;
}
const list = [];
for (const name in link.children) {
if (name === '.' || name === '..') {
continue;
}
list.push((0, encoding_1.strToEncoding)(name, options.encoding));
}
if (!isWin && options.encoding !== 'buffer')
list.sort();
return list;
}
readdirSync(path, options) {
const opts = getReaddirOptions(options);
const filename = pathToFilename(path);
return this.readdirBase(filename, opts);
}
readdir(path, a, b) {
const [options, callback] = getReaddirOptsAndCb(a, b);
const filename = pathToFilename(path);
this.wrapAsync(this.readdirBase, [filename, options], callback);
}
readlinkBase(filename, encoding) {
const link = this.getLinkOrThrow(filename, 'readlink');
const node = link.getNode();
if (!node.isSymlink())
throw createError(EINVAL, 'readlink', filename);
const str = sep + node.symlink.join(sep);
return (0, encoding_1.strToEncoding)(str, encoding);
}
readlinkSync(path, options) {
const opts = getDefaultOpts(options);
const filename = pathToFilename(path);
return this.readlinkBase(filename, opts.encoding);
}
readlink(path, a, b) {
const [opts, callback] = getDefaultOptsAndCb(a, b);
const filename = pathToFilename(path);
this.wrapAsync(this.readlinkBase, [filename, opts.encoding], callback);
}
fsyncBase(fd) {
this.getFileByFdOrThrow(fd, 'fsync');
}
fsyncSync(fd) {
this.fsyncBase(fd);
}
fsync(fd, callback) {
this.wrapAsync(this.fsyncBase, [fd], callback);
}
fdatasyncBase(fd) {
this.getFileByFdOrThrow(fd, 'fdatasync');
}
fdatasyncSync(fd) {
this.fdatasyncBase(fd);
}
fdatasync(fd, callback) {
this.wrapAsync(this.fdatasyncBase, [fd], callback);
}
ftruncateBase(fd, len) {
const file = this.getFileByFdOrThrow(fd, 'ftruncate');
file.truncate(len);
}
ftruncateSync(fd, len) {
this.ftruncateBase(fd, len);
}
ftruncate(fd, a, b) {
const len = typeof a === 'number' ? a : 0;
const callback = validateCallback(typeof a === 'number' ? b : a);
this.wrapAsync(this.ftruncateBase, [fd, len], callback);
}
truncateBase(path, len) {
const fd = this.openSync(path, 'r+');
try {
this.ftruncateSync(fd, len);
}
finally {
this.closeSync(fd);
}
}
truncateSync(id, len) {
if (isFd(id))
return this.ftruncateSync(id, len);
this.truncateBase(id, len);
}
truncate(id, a, b) {
const len = typeof a === 'number' ? a : 0;
const callback = validateCallback(typeof a === 'number' ? b : a);
if (isFd(id))
return this.ftruncate(id, len, callback);
this.wrapAsync(this.truncateBase, [id, len], callback);
}
futimesBase(fd, atime, mtime) {
const file = this.getFileByFdOrThrow(fd, 'futimes');
const node = file.node;
node.atime = new Date(atime * 1000);
node.mtime = new Date(mtime * 1000);
}
futimesSync(fd, atime, mtime) {
this.futimesBase(fd, toUnixTimestamp(atime), toUnixTimestamp(mtime));
}
futimes(fd, atime, mtime, callback) {
this.wrapAsync(this.futimesBase, [fd, toUnixTimestamp(atime), toUnixTimestamp(mtime)], callback);
}
utimesBase(filename, atime, mtime) {
const fd = this.openSync(filename, 'r');
try {
this.futimesBase(fd, atime, mtime);
}
finally {
this.closeSync(fd);
}
}
utimesSync(path, atime, mtime) {
this.utimesBase(pathToFilename(path), toUnixTimestamp(atime), toUnixTimestamp(mtime));
}
utimes(path, atime, mtime, callback) {
this.wrapAsync(this.utimesBase, [pathToFilename(path), toUnixTimestamp(atime), toUnixTimestamp(mtime)], callback);
}
mkdirBase(filename, modeNum) {
const steps = filenameToSteps(filename);
// This will throw if user tries to create root dir `fs.mkdirSync('/')`.
if (!steps.length) {
throw createError(EEXIST, 'mkdir', filename);
}
const dir = this.getLinkParentAsDirOrThrow(filename, 'mkdir');
// Check path already exists.
const name = steps[steps.length - 1];
if (dir.getChild(name))
throw createError(EEXIST, 'mkdir', filename);
dir.createChild(name, this.createNode(true, modeNum));
}
/**
* Creates directory tree recursively.
* @param filename
* @param modeNum
*/
mkdirpBase(filename, modeNum) {
const fullPath = resolve(filename);
const fullPathSansSlash = fullPath.substring(1);
const steps = !fullPathSansSlash ? [] : fullPathSansSlash.split(sep);
let link = this.root;
let created = false;
for (let i = 0; i < steps.length; i++) {
const step = steps[i];
if (!link.getNode().isDirectory())
throw createError(ENOTDIR, 'mkdir', link.getPath());
const child = link.getChild(step);
if (child) {
if (child.getNode().isDirectory())
link = child;
else
throw createError(ENOTDIR, 'mkdir', child.getPath());
}
else {
link = link.createChild(step, this.createNode(true, modeNum));
created = true;
}
}
return created ? fullPath : undefined;
}
mkdirSync(path, options) {
const opts = getMkdirOptions(options);
const modeNum = modeToNumber(opts.mode, 0o777);
const filename = pathToFilename(path);
if (opts.recursive)
return this.mkdirpBase(filename, modeNum);
this.mkdirBase(filename, modeNum);
}
mkdir(path, a, b) {
const opts = getMkdirOptions(a);
const callback = validateCallback(typeof a === 'function' ? a : b);
const modeNum = modeToNumber(opts.mode, 0o777);
const filename = pathToFilename(path);
if (opts.recursive)
this.wrapAsync(this.mkdirpBase, [filename, modeNum], callback);
else
this.wrapAsync(this.mkdirBase, [filename, modeNum], callback);
}
// legacy interface
mkdirpSync(path, mode) {
return this.mkdirSync(path, { mode, recursive: true });
}
mkdirp(path, a, b) {
const mode = typeof a === 'function' ? undefined : a;
const callback = validateCallback(typeof a === 'function' ? a : b);
this.mkdir(path, { mode, recursive: true }, callback);
}
mkdtempBase(prefix, encoding, retry = 5) {
const filename = prefix + this.genRndStr();
try {
this.mkdirBase(filename, 511 /* MODE.DIR */);
return (0, encoding_1.strToEncoding)(filename, encoding);
}
catch (err) {
if (err.code === EEXIST) {
if (retry > 1)
return this.mkdtempBase(prefix, encoding, retry - 1);
else
throw Error('Could not create temp dir.');
}
else
throw err;
}
}
mkdtempSync(prefix, options) {
const { encoding } = getDefaultOpts(options);
if (!prefix || typeof prefix !== 'string')
throw new TypeError('filename prefix is required');
nullCheck(prefix);
return this.mkdtempBase(prefix, encoding);
}
mkdtemp(prefix, a, b) {
const [{ encoding }, callback] = getDefaultOptsAndCb(a, b);
if (!prefix || typeof prefix !== 'string')
throw new TypeError('filename prefix is required');
if (!nullCheck(prefix))
return;
this.wrapAsync(this.mkdtempBase, [prefix, encoding], callback);
}
rmdirBase(filename, options) {
const opts = getRmdirOptions(options);
const link = this.getLinkAsDirOrThrow(filename, 'rmdir');
// Check directory is empty.
if (link.length && !opts.recursive)
throw createError(ENOTEMPTY, 'rmdir', filename);
this.deleteLink(link);
}
rmdirSync(path, options) {
this.rmdirBase(pathToFilename(path), options);
}
rmdir(path, a, b) {
const opts = getRmdirOptions(a);
const callback = validateCallback(typeof a === 'function' ? a : b);
this.wrapAsync(this.rmdirBase, [pathToFilename(path), opts], callback);
}
rmBase(filename, options = {}) {
const link = this.getResolvedLink(filename);
if (!link) {
// "stat" is used to match Node's native error message.
if (!options.force)
throw createError(ENOENT, 'stat', filename);
return;
}
if (link.getNode().isDirectory()) {
if (!options.recursive) {
throw createError(ERR_FS_EISDIR, 'rm', filename);
}
}
this.deleteLink(link);
}
rmSync(path, options) {
this.rmBase(pathToFilename(path), options);
}
rm(path, a, b) {
const [opts, callback] = getRmOptsAndCb(a, b);
this.wrapAsync(this.rmBase, [pathToFilename(path), opts], callback);
}
fchmodBase(fd, modeNum) {
const file = this.getFileByFdOrThrow(fd, 'fchmod');
file.chmod(modeNum);
}
fchmodSync(fd, mode) {
this.fchmodBase(fd, modeToNumber(mode));
}
fchmod(fd, mode, callback) {
this.wrapAsync(this.fchmodBase, [fd, modeToNumber(mode)], callback);
}
chmodBase(filename, modeNum) {
const fd = this.openSync(filename, 'r');
try {
this.fchmodBase(fd, modeNum);
}
finally {
this.closeSync(fd);
}
}
chmodSync(path, mode) {
const modeNum = modeToNumber(mode);
const filename = pathToFilename(path);
this.chmodBase(filename, modeNum);
}
chmod(path, mode, callback) {
const modeNum = modeToNumber(mode);
const filename = pathToFilename(path);
this.wrapAsync(this.chmodBase, [filename, modeNum], callback);
}
lchmodBase(filename, modeNum) {
const fd = this.openBase(filename, O_RDWR, 0, false);
try {
this.fchmodBase(fd, modeNum);
}
finally {
this.closeSync(fd);
}
}
lchmodSync(path, mode) {
const modeNum = modeToNumber(mode);
const filename = pathToFilename(path);
this.lchmodBase(filename, modeNum);
}
lchmod(path, mode, callback) {
const modeNum = modeToNumber(mode);
const filename = pathToFilename(path);
this.wrapAsync(this.lchmodBase, [filename, modeNum], callback);
}
fchownBase(fd, uid, gid) {
this.getFileByFdOrThrow(fd, 'fchown').chown(uid, gid);
}
fchownSync(fd, uid, gid) {
validateUid(uid);
validateGid(gid);
this.fchownBase(fd, uid, gid);
}
fchown(fd, uid, gid, callback) {
validateUid(uid);
validateGid(gid);
this.wrapAsync(this.fchownBase, [fd, uid, gid], callback);
}
chownBase(filename, uid, gid) {
const link = this.getResolvedLinkOrThrow(filename, 'chown');
const node = link.getNode();
node.chown(uid, gid);
// if(node.isFile() || node.isSymlink()) {
//
// } else if(node.isDirectory()) {
//
// } else {
// TODO: What do we do here?
// }
}
chownSync(path, uid, gid) {
validateUid(uid);
validateGid(gid);
this.chownBase(pathToFilename(path), uid, gid);
}
chown(path, uid, gid, callback) {
validateUid(uid);
validateGid(gid);
this.wrapAsync(this.chownBase, [pathToFilename(path), uid, gid], callback);
}
lchownBase(filename, uid, gid) {
this.getLinkOrThrow(filename, 'lchown').getNode().chown(uid, gid);
}
lchownSync(path, uid, gid) {
validateUid(uid);
validateGid(gid);
this.lchownBase(pathToFilename(path), uid, gid);
}
lchown(path, uid, gid, callback) {
validateUid(uid);
validateGid(gid);
this.wrapAsync(this.lchownBase, [pathToFilename(path), uid, gid], callback);
}
watchFile(path, a, b) {
const filename = pathToFilename(path);
let options = a;
let listener = b;
if (typeof options === 'function') {
listener = a;
options = null;
}
if (typeof listener !== 'function') {
throw Error('"watchFile()" requires a listener function');
}
let interval = 5007;
let persistent = true;
if (options && typeof options === 'object') {
if (typeof options.interval === 'number')
interval = options.interval;
if (typeof options.persistent === 'boolean')
persistent = options.persistent;
}
let watcher = this.statWatchers[filename];
if (!watcher) {
watcher = new this.StatWatcher();
watcher.start(filename, persistent, interval);
this.statWatchers[filename] = watcher;
}
watcher.addListener('change', listener);
return watcher;
}
unwatchFile(path, listener) {
const filename = pathToFilename(path);
const watcher = this.statWatchers[filename];
if (!watcher)
return;
if (typeof listener === 'function') {
watcher.removeListener('change', listener);
}
else {
watcher.removeAllListeners('change');
}
if (watcher.listenerCount('change') === 0) {
watcher.stop();
delete this.statWatchers[filename];
}
}
createReadStream(path, options) {
return new this.ReadStream(path, options);
}
createWriteStream(path, options) {
return new this.WriteStream(path, options);
}
// watch(path: PathLike): FSWatcher;
// watch(path: PathLike, options?: IWatchOptions | string): FSWatcher;
watch(path, options, listener) {
const filename = pathToFilename(path);
let givenOptions = options;
if (typeof options === 'function') {
listener = options;
givenOptions = null;
}
// tslint:disable-next-line prefer-const
let { persistent, recursive, encoding } = getDefaultOpts(givenOptions);
if (persistent === undefined)
persistent = true;
if (recursive === undefined)
recursive = false;
const watcher = new this.FSWatcher();
watcher.start(filename, persistent, recursive, encoding);
if (listener) {
watcher.addListener('change', listener);
}
return watcher;
}
}
exports.Volume = Volume;
/**
* Global file descriptor counter. UNIX file descriptors start from 0 and go sequentially
* up, so here, in order not to conflict with them, we choose some big number and descrease
* the file descriptor of every new opened file.
* @type {number}
* @todo This should not be static, right?
*/
Volume.fd = 0x7fffffff;
function emitStop(self) {
self.emit('stop');
}
class StatWatcher extends events_1.EventEmitter {
constructor(vol) {
super();
this.onInterval = () => {
try {
const stats = this.vol.statSync(this.filename);
if (this.hasChanged(stats)) {
this.emit('change', stats, this.prev);
this.prev = stats;
}
}
finally {
this.loop();
}
};
this.vol = vol;
}
loop() {
this.timeoutRef = this.setTimeout(this.onInterval, this.interval);
}
hasChanged(stats) {
// if(!this.prev) return false;
if (stats.mtimeMs > this.prev.mtimeMs)
return true;
if (stats.nlink !== this.prev.nlink)
return true;
return false;
}
start(path, persistent = true, interval = 5007) {
this.filename = pathToFilename(path);
this.setTimeout = persistent
? setTimeout.bind(typeof globalThis !== 'undefined' ? globalThis : global)
: setTimeoutUnref_1.default;
this.interval = interval;
this.prev = this.vol.statSync(this.filename);
this.loop();
}
stop() {
clearTimeout(this.timeoutRef);
process_1.default.nextTick(emitStop, this);
}
}
exports.StatWatcher = StatWatcher;
var pool;
function allocNewPool(poolSize) {
pool = (0, buffer_1.bufferAllocUnsafe)(poolSize);
pool.used = 0;
}
util.inherits(FsReadStream, stream_1.Readable);
exports.ReadStream = FsReadStream;
function FsReadStream(vol, path, options) {
if (!(this instanceof FsReadStream))
return new FsReadStream(vol, path, options);
this._vol = vol;
// a little bit bigger buffer and water marks by default
options = Object.assign({}, getOptions(options, {}));
if (options.highWaterMark === undefined)
options.highWaterMark = 64 * 1024;
stream_1.Readable.call(this, options);
this.path = pathToFilename(path);
this.fd = options.fd === undefined ? null : options.fd;
this.flags = options.flags === undefined ? 'r' : options.flags;
this.mode = options.mode === undefined ? 0o666 : options.mode;
this.start = options.start;
this.end = options.end;
this.autoClose = options.autoClose === undefined ? true : options.autoClose;
this.pos = undefined;
this.bytesRead = 0;
if (this.start !== undefined) {
if (typeof this.start !== 'number') {
throw new TypeError('"start" option must be a Number');
}
if (this.end === undefined) {
this.end = Infinity;
}
else if (typeof this.end !== 'number') {
throw new TypeError('"end" option must be a Number');
}
if (this.start > this.end) {
throw new Error('"start" option must be <= "end" option');
}
this.pos = this.start;
}
if (typeof this.fd !== 'number')
this.open();
this.on('end', function () {
if (this.autoClose) {
if (this.destroy)
this.destroy();
}
});
}
FsReadStream.prototype.open = function () {
var self = this; // tslint:disable-line no-this-assignment
this._vol.open(this.path, this.flags, this.mode, (er, fd) => {
if (er) {
if (self.autoClose) {
if (self.destroy)
self.destroy();
}
self.emit('error', er);
return;
}
self.fd = fd;
self.emit('open', fd);
// start the flow of data.
self.read();
});
};
FsReadStream.prototype._read = function (n) {
if (typeof this.fd !== 'number') {
return this.once('open', function () {
this._read(n);
});
}
if (this.destroyed)
return;
if (!pool || pool.length - pool.used < kMinPoolSpace) {
// discard the old pool.
allocNewPool(this._readableState.highWaterMark);
}
// Grab another reference to the pool in the case that while we're
// in the thread pool another read() finishes up the pool, and
// allocates a new one.
var thisPool = pool;
var toRead = Math.min(pool.length - pool.used, n);
var start = pool.used;
if (this.pos !== undefined)
toRead = Math.min(this.end - this.pos + 1, toRead);
// already read everything we were supposed to read!
// treat as EOF.
if (toRead <= 0)
return this.push(null);
// the actual read.
var self = this; // tslint:disable-line no-this-assignment
this._vol.read(this.fd, pool, pool.used, toRead, this.pos, onread);
// move the pool positions, and internal position for reading.
if (this.pos !== undefined)
this.pos += toRead;
pool.used += toRead;
function onread(er, bytesRead) {
if (er) {
if (self.autoClose && self.destroy) {
self.destroy();
}
self.emit('error', er);
}
else {
var b = null;
if (bytesRead > 0) {
self.bytesRead += bytesRead;
b = thisPool.slice(start, start + bytesRead);
}
self.push(b);
}
}
};
FsReadStream.prototype._destroy = function (err, cb) {
this.close(err2 => {
cb(err || err2);
});
};
FsReadStream.prototype.close = function (cb) {
var _a;
if (cb)
this.once('close', cb);
if (this.closed || typeof this.fd !== 'number') {
if (typeof this.fd !== 'number') {
this.once('open', closeOnOpen);
return;
}
return process_1.default.nextTick(() => this.emit('close'));
}
// Since Node 18, there is only a getter for '.closed'.
// The first branch mimics other setters from Readable.
// See https://github.com/nodejs/node/blob/v18.0.0/lib/internal/streams/readable.js#L1243
if (typeof ((_a = this._readableState) === null || _a === void 0 ? void 0 : _a.closed) === 'boolean') {
this._readableState.closed = true;
}
else {
this.closed = true;
}
this._vol.close(this.fd, er => {
if (er)
this.emit('error', er);
else
this.emit('close');
});
this.fd = null;
};
// needed because as it will be called with arguments
// that does not match this.close() signature
function closeOnOpen(fd) {
this.close();
}
util.inherits(FsWriteStream, stream_1.Writable);
exports.WriteStream = FsWriteStream;
function FsWriteStream(vol, path, options) {
if (!(this instanceof FsWriteStream))
return new FsWriteStream(vol, path, options);
this._vol = vol;
options = Object.assign({}, getOptions(options, {}));
stream_1.Writable.call(this, options);
this.path = pathToFilename(path);
this.fd = options.fd === undefined ? null : options.fd;
this.flags = options.flags === undefined ? 'w' : options.flags;
this.mode = options.mode === undefined ? 0o666 : options.mode;
this.start = options.start;
this.autoClose = options.autoClose === undefined ? true : !!options.autoClose;
this.pos = undefined;
this.bytesWritten = 0;
if (this.start !== undefined) {
if (typeof this.start !== 'number') {
throw new TypeError('"start" option must be a Number');
}
if (this.start < 0) {
throw new Error('"start" must be >= zero');
}
this.pos = this.start;
}
if (options.encoding)
this.setDefaultEncoding(options.encoding);
if (typeof this.fd !== 'number')
this.open();
// dispose on finish.
this.once('finish', function () {
if (this.autoClose) {
this.close();
}
});
}
FsWriteStream.prototype.open = function () {
this._vol.open(this.path, this.flags, this.mode, function (er, fd) {
if (er) {
if (this.autoClose && this.destroy) {
this.destroy();
}
this.emit('error', er);
return;
}
this.fd = fd;
this.emit('open', fd);
}.bind(this));
};
FsWriteStream.prototype._write = function (data, encoding, cb) {
if (!(data instanceof buffer_1.Buffer || data instanceof Uint8Array))
return this.emit('error', new Error('Invalid data'));
if (typeof this.fd !== 'number') {
return this.once('open', function () {
this._write(data, encoding, cb);
});
}
var self = this; // tslint:disable-line no-this-assignment
this._vol.write(this.fd, data, 0, data.length, this.pos, (er, bytes) => {
if (er) {
if (self.autoClose && self.destroy) {
self.destroy();
}
return cb(er);
}
self.bytesWritten += bytes;
cb();
});
if (this.pos !== undefined)
this.pos += data.length;
};
FsWriteStream.prototype._writev = function (data, cb) {
if (typeof this.fd !== 'number') {
return this.once('open', function () {
this._writev(data, cb);
});
}
const self = this; // tslint:disable-line no-this-assignment
const len = data.length;
const chunks = new Array(len);
var size = 0;
for (var i = 0; i < len; i++) {
var chunk = data[i].chunk;
chunks[i] = chunk;
size += chunk.length;
}
const buf = buffer_1.Buffer.concat(chunks);
this._vol.write(this.fd, buf, 0, buf.length, this.pos, (er, bytes) => {
if (er) {
if (self.destroy)
self.destroy();
return cb(er);
}
self.bytesWritten += bytes;
cb();
});
if (this.pos !== undefined)
this.pos += size;
};
FsWriteStream.prototype.close = function (cb) {
var _a;
if (cb)
this.once('close', cb);
if (this.closed || typeof this.fd !== 'number') {
if (typeof this.fd !== 'number') {
this.once('open', closeOnOpen);
return;
}
return process_1.default.nextTick(() => this.emit('close'));
}
// Since Node 18, there is only a getter for '.closed'.
// The first branch mimics other setters from Writable.
// See https://github.com/nodejs/node/blob/v18.0.0/lib/internal/streams/writable.js#L766
if (typeof ((_a = this._writableState) === null || _a === void 0 ? void 0 : _a.closed) === 'boolean') {
this._writableState.closed = true;
}
else {
this.closed = true;
}
this._vol.close(this.fd, er => {
if (er)
this.emit('error', er);
else
this.emit('close');
});
this.fd = null;
};
FsWriteStream.prototype._destroy = FsReadStream.prototype._destroy;
// There is no shutdown() for files.
FsWriteStream.prototype.destroySoon = FsWriteStream.prototype.end;
// ---------------------------------------- FSWatcher
class FSWatcher extends events_1.EventEmitter {
constructor(vol) {
super();
this._filename = '';
this._filenameEncoded = '';
// _persistent: boolean = true;
this._recursive = false;
this._encoding = encoding_1.ENCODING_UTF8;
// inode -> removers
this._listenerRemovers = new Map();
this._onParentChild = (link) => {
if (link.getName() === this._getName()) {
this._emit('rename');
}
};
this._emit = (type) => {
this.emit('change', type, this._filenameEncoded);
};
this._persist = () => {
this._timer = setTimeout(this._persist, 1e6);
};
this._vol = vol;
// TODO: Emit "error" messages when watching.
// this._handle.onchange = function(status, eventType, filename) {
// if (status < 0) {
// self._handle.close();
// const error = !filename ?
// errnoException(status, 'Error watching file for changes:') :
// errnoException(status, `Error watching file ${filename} for changes:`);
// error.filename = filename;
// self.emit('error', error);
// } else {
// self.emit('change', eventType, filename);
// }
// };
}
_getName() {
return this._steps[this._steps.length - 1];
}
start(path, persistent = true, recursive = false, encoding = encoding_1.ENCODING_UTF8) {
this._filename = pathToFilename(path);
this._steps = filenameToSteps(this._filename);
this._filenameEncoded = (0, encoding_1.strToEncoding)(this._filename);
// this._persistent = persistent;
this._recursive = recursive;
this._encoding = encoding;
try {
this._link = this._vol.getLinkOrThrow(this._filename, 'FSWatcher');
}
catch (err) {
const error = new Error(`watch ${this._filename} ${err.code}`);
error.code = err.code;
error.errno = err.code;
throw error;
}
const watchLinkNodeChanged = (link) => {
var _a;
const filepath = link.getPath();
const node = link.getNode();
const onNodeChange = () => {
let filename = relative(this._filename, filepath);
if (!filename) {
filename = this._getName();
}
return this.emit('change', 'change', filename);
};
node.on('change', onNodeChange);
const removers = (_a = this._listenerRemovers.get(node.ino)) !== null && _a !== void 0 ? _a : [];
removers.push(() => node.removeListener('change', onNodeChange));
this._listenerRemovers.set(node.ino, removers);
};
const watchLinkChildrenChanged = (link) => {
var _a;
const node = link.getNode();
// when a new link added
const onLinkChildAdd = (l) => {
this.emit('change', 'rename', relative(this._filename, l.getPath()));
setTimeout(() => {
// 1. watch changes of the new link-node
watchLinkNodeChanged(l);
// 2. watch changes of the new link-node's children
watchLinkChildrenChanged(l);
});
};
// when a new link deleted
const onLinkChildDelete = (l) => {
// remove the listeners of the children nodes
const removeLinkNodeListeners = (curLink) => {
const ino = curLink.getNode().ino;
const removers = this._listenerRemovers.get(ino);
if (removers) {
removers.forEach(r => r());
this._listenerRemovers.delete(ino);
}
Object.values(curLink.children).forEach(childLink => {
if (childLink) {
removeLinkNodeListeners(childLink);
}
});
};
removeLinkNodeListeners(l);
this.emit('change', 'rename', relative(this._filename, l.getPath()));
};
// children nodes changed
Object.entries(link.children).forEach(([name, childLink]) => {
if (childLink && name !== '.' && name !== '..') {
watchLinkNodeChanged(childLink);
}
});
// link children add/remove
link.on('child:add', onLinkChildAdd);
link.on('child:delete', onLinkChildDelete);
const removers = (_a = this._listenerRemovers.get(node.ino)) !== null && _a !== void 0 ? _a : [];
removers.push(() => {
link.removeListener('child:add', onLinkChildAdd);
link.removeListener('child:delete', onLinkChildDelete);
});
if (recursive) {
Object.entries(link.children).forEach(([name, childLink]) => {
if (childLink && name !== '.' && name !== '..') {
watchLinkChildrenChanged(childLink);
}
});
}
};
watchLinkNodeChanged(this._link);
watchLinkChildrenChanged(this._link);
const parent = this._link.parent;
if (parent) {
// parent.on('child:add', this._onParentChild);
parent.setMaxListeners(parent.getMaxListeners() + 1);
parent.on('child:delete', this._onParentChild);
}
if (persistent)
this._persist();
}
close() {
clearTimeout(this._timer);
this._listenerRemovers.forEach(removers => {
removers.forEach(r => r());
});
this._listenerRemovers.clear();
const parent = this._link.parent;
if (parent) {
// parent.removeListener('child:add', this._onParentChild);
parent.removeListener('child:delete', this._onParentChild);
}
}
}
exports.FSWatcher = FSWatcher;