1 files changed, 329 insertions, 0 deletions
diff --git a/node_modules/memory-fs/lib/MemoryFileSystem.js b/node_modules/memory-fs/lib/MemoryFileSystem.js
new file mode 100644
index 00000000..7ef3f4c9
--- /dev/null
+++ b/node_modules/memory-fs/lib/MemoryFileSystem.js
@@ -0,0 +1,329 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+var normalize = require("./normalize");
+var errors = require("errno");
+var stream = require("readable-stream");
+
+var ReadableStream = stream.Readable;
+var WritableStream = stream.Writable;
+
+function MemoryFileSystemError(err, path) {
+	Error.call(this)
+	if (Error.captureStackTrace)
+		Error.captureStackTrace(this, arguments.callee)
+	this.code = err.code;
+	this.errno = err.errno;
+	this.message = err.description;
+	this.path = path;
+}
+MemoryFileSystemError.prototype = new Error();
+
+function MemoryFileSystem(data) {
+	this.data = data || {};
+}
+module.exports = MemoryFileSystem;
+
+function isDir(item) {
+	if(typeof item !== "object") return false;
+	return item[""] === true;
+}
+
+function isFile(item) {
+	if(typeof item !== "object") return false;
+	return !item[""];
+}
+
+function pathToArray(path) {
+	path = normalize(path);
+	var nix = /^\//.test(path);
+	if(!nix) {
+		if(!/^[A-Za-z]:/.test(path)) {
+			throw new MemoryFileSystemError(errors.code.EINVAL, path);
+		}
+		path = path.replace(/[\\\/]+/g, "\\"); // multi slashs
+		path = path.split(/[\\\/]/);
+		path[0] = path[0].toUpperCase();
+	} else {
+		path = path.replace(/\/+/g, "/"); // multi slashs
+		path = path.substr(1).split("/");
+	}
+	if(!path[path.length-1]) path.pop();
+	return path;
+}
+
+function trueFn() { return true; }
+function falseFn() { return false; }
+
+MemoryFileSystem.prototype.meta = function(_path) {
+	var path = pathToArray(_path);
+	var current = this.data;
+	for(var i = 0; i < path.length - 1; i++) {
+		if(!isDir(current[path[i]]))
+			return;
+		current = current[path[i]];
+	}
+	return current[path[i]];
+}
+
+MemoryFileSystem.prototype.existsSync = function(_path) {
+	return !!this.meta(_path);
+}
+
+MemoryFileSystem.prototype.statSync = function(_path) {
+	var current = this.meta(_path);
+	if(_path === "/" || isDir(current)) {
+		return {
+			isFile: falseFn,
+			isDirectory: trueFn,
+			isBlockDevice: falseFn,
+			isCharacterDevice: falseFn,
+			isSymbolicLink: falseFn,
+			isFIFO: falseFn,
+			isSocket: falseFn
+		};
+	} else if(isFile(current)) {
+		return {
+			isFile: trueFn,
+			isDirectory: falseFn,
+			isBlockDevice: falseFn,
+			isCharacterDevice: falseFn,
+			isSymbolicLink: falseFn,
+			isFIFO: falseFn,
+			isSocket: falseFn
+		};
+	} else {
+		throw new MemoryFileSystemError(errors.code.ENOENT, _path);
+	}
+};
+
+MemoryFileSystem.prototype.readFileSync = function(_path, encoding) {
+	var path = pathToArray(_path);
+	var current = this.data;
+	for(var i = 0; i < path.length - 1; i++) {
+		if(!isDir(current[path[i]]))
+			throw new MemoryFileSystemError(errors.code.ENOENT, _path);
+		current = current[path[i]];
+	}
+	if(!isFile(current[path[i]])) {
+		if(isDir(current[path[i]]))
+			throw new MemoryFileSystemError(errors.code.EISDIR, _path);
+		else
+			throw new MemoryFileSystemError(errors.code.ENOENT, _path);
+	}
+	current = current[path[i]];
+	return encoding ? current.toString(encoding) : current;
+};
+
+MemoryFileSystem.prototype.readdirSync = function(_path) {
+	if(_path === "/") return Object.keys(this.data).filter(Boolean);
+	var path = pathToArray(_path);
+	var current = this.data;
+	for(var i = 0; i < path.length - 1; i++) {
+		if(!isDir(current[path[i]]))
+			throw new MemoryFileSystemError(errors.code.ENOENT, _path);
+		current = current[path[i]];
+	}
+	if(!isDir(current[path[i]])) {
+		if(isFile(current[path[i]]))
+			throw new MemoryFileSystemError(errors.code.ENOTDIR, _path);
+		else
+			throw new MemoryFileSystemError(errors.code.ENOENT, _path);
+	}
+	return Object.keys(current[path[i]]).filter(Boolean);
+};
+
+MemoryFileSystem.prototype.mkdirpSync = function(_path) {
+	var path = pathToArray(_path);
+	if(path.length === 0) return;
+	var current = this.data;
+	for(var i = 0; i < path.length; i++) {
+		if(isFile(current[path[i]]))
+			throw new MemoryFileSystemError(errors.code.ENOTDIR, _path);
+		else if(!isDir(current[path[i]]))
+			current[path[i]] = {"":true};
+		current = current[path[i]];
+	}
+	return;
+};
+
+MemoryFileSystem.prototype.mkdirSync = function(_path) {
+	var path = pathToArray(_path);
+	if(path.length === 0) return;
+	var current = this.data;
+	for(var i = 0; i < path.length - 1; i++) {
+		if(!isDir(current[path[i]]))
+			throw new MemoryFileSystemError(errors.code.ENOENT, _path);
+		current = current[path[i]];
+	}
+	if(isDir(current[path[i]]))
+		throw new MemoryFileSystemError(errors.code.EEXIST, _path);
+	else if(isFile(current[path[i]]))
+		throw new MemoryFileSystemError(errors.code.ENOTDIR, _path);
+	current[path[i]] = {"":true};
+	return;
+};
+
+MemoryFileSystem.prototype._remove = function(_path, name, testFn) {
+	var path = pathToArray(_path);
+	if(path.length === 0) {
+		throw new MemoryFileSystemError(errors.code.EPERM, _path);
+	}
+	var current = this.data;
+	for(var i = 0; i < path.length - 1; i++) {
+		if(!isDir(current[path[i]]))
+			throw new MemoryFileSystemError(errors.code.ENOENT, _path);
+		current = current[path[i]];
+	}
+	if(!testFn(current[path[i]]))
+		throw new MemoryFileSystemError(errors.code.ENOENT, _path);
+	delete current[path[i]];
+	return;
+};
+
+MemoryFileSystem.prototype.rmdirSync = function(_path) {
+	return this._remove(_path, "Directory", isDir);
+};
+
+MemoryFileSystem.prototype.unlinkSync = function(_path) {
+	return this._remove(_path, "File", isFile);
+};
+
+MemoryFileSystem.prototype.readlinkSync = function(_path) {
+	throw new MemoryFileSystemError(errors.code.ENOSYS, _path);
+};
+
+MemoryFileSystem.prototype.writeFileSync = function(_path, content, encoding) {
+	if(!content && !encoding) throw new Error("No content");
+	var path = pathToArray(_path);
+	if(path.length === 0) {
+		throw new MemoryFileSystemError(errors.code.EISDIR, _path);
+	}
+	var current = this.data;
+	for(var i = 0; i < path.length - 1; i++) {
+		if(!isDir(current[path[i]]))
+			throw new MemoryFileSystemError(errors.code.ENOENT, _path);
+		current = current[path[i]];
+	}
+	if(isDir(current[path[i]]))
+		throw new MemoryFileSystemError(errors.code.EISDIR, _path);
+	current[path[i]] = encoding || typeof content === "string" ? new Buffer(content, encoding) : content;
+	return;
+};
+
+MemoryFileSystem.prototype.join = require("./join");
+MemoryFileSystem.prototype.pathToArray = pathToArray;
+MemoryFileSystem.prototype.normalize = normalize;
+
+// stream functions
+
+MemoryFileSystem.prototype.createReadStream = function(path, options) {
+	var stream = new ReadableStream();
+	var done = false;
+	var data;
+	try {
+		data = this.readFileSync(path);
+	} catch (e) {
+		stream._read = function() {
+			if (done) {
+				return;
+			}
+			done = true;
+			this.emit('error', e);
+			this.push(null);
+		};
+		return stream;
+	}
+	options = options || { };
+	options.start = options.start || 0;
+	options.end = options.end || data.length;
+	stream._read = function() {
+		if (done) {
+			return;
+		}
+		done = true;
+		this.push(data.slice(options.start, options.end));
+		this.push(null);
+	};
+	return stream;
+};
+
+MemoryFileSystem.prototype.createWriteStream = function(path, options) {
+	var stream = new WritableStream(), self = this;
+	try {
+		// Zero the file and make sure it is writable
+		this.writeFileSync(path, new Buffer(0));
+	} catch(e) {
+		// This or setImmediate?
+		stream.once('prefinish', function() {
+			stream.emit('error', e);
+		});
+		return stream;
+	}
+	var bl = [ ], len = 0;
+	stream._write = function(chunk, encoding, callback) {
+		bl.push(chunk);
+		len += chunk.length;
+		self.writeFile(path, Buffer.concat(bl, len), callback);
+	}
+	return stream;
+};
+
+// async functions
+
+["stat", "readdir", "mkdirp", "rmdir", "unlink", "readlink"].forEach(function(fn) {
+	MemoryFileSystem.prototype[fn] = function(path, callback) {
+		try {
+			var result = this[fn + "Sync"](path);
+		} catch(e) {
+			setImmediate(function() {
+				callback(e);
+			});
+
+			return;
+		}
+		setImmediate(function() {
+			callback(null, result);
+		});
+	};
+});
+
+["mkdir", "readFile"].forEach(function(fn) {
+	MemoryFileSystem.prototype[fn] = function(path, optArg, callback) {
+		if(!callback) {
+			callback = optArg;
+			optArg = undefined;
+		}
+		try {
+			var result = this[fn + "Sync"](path, optArg);
+		} catch(e) {
+			setImmediate(function() {
+				callback(e);
+			});
+
+			return;
+		}
+		setImmediate(function() {
+			callback(null, result);
+		});
+	};
+});
+
+MemoryFileSystem.prototype.exists = function(path, callback) {
+	return callback(this.existsSync(path));
+}
+
+MemoryFileSystem.prototype.writeFile = function (path, content, encoding, callback) {
+	if(!callback) {
+		callback = encoding;
+		encoding = undefined;
+	}
+	try {
+		this.writeFileSync(path, content, encoding);
+	} catch(e) {
+		return callback(e);
+	}
+	return callback();
+};