https://github.com/Microsoft/TypeScript
Tip revision: 2dbc531cf4cd8758dc0c94465d874d1013d3c5a4 authored by Mohamed Hegazy on 05 January 2017, 20:24:03 UTC
Update LKG
Update LKG
Tip revision: 2dbc531
sys.ts
/// <reference path="core.ts"/>
namespace ts {
export type FileWatcherCallback = (fileName: string, removed?: boolean) => void;
export type DirectoryWatcherCallback = (fileName: string) => void;
export interface WatchedFile {
fileName: string;
callback: FileWatcherCallback;
mtime?: Date;
}
export interface System {
args: string[];
newLine: string;
useCaseSensitiveFileNames: boolean;
write(s: string): void;
readFile(path: string, encoding?: string): string;
getFileSize?(path: string): number;
writeFile(path: string, data: string, writeByteOrderMark?: boolean): void;
/**
* @pollingInterval - this parameter is used in polling-based watchers and ignored in watchers that
* use native OS file watching
*/
watchFile?(path: string, callback: FileWatcherCallback, pollingInterval?: number): FileWatcher;
watchDirectory?(path: string, callback: DirectoryWatcherCallback, recursive?: boolean): FileWatcher;
resolvePath(path: string): string;
fileExists(path: string): boolean;
directoryExists(path: string): boolean;
createDirectory(path: string): void;
getExecutingFilePath(): string;
getCurrentDirectory(): string;
getDirectories(path: string): string[];
readDirectory(path: string, extensions?: string[], exclude?: string[], include?: string[]): string[];
getModifiedTime?(path: string): Date;
createHash?(data: string): string;
getMemoryUsage?(): number;
exit(exitCode?: number): void;
realpath?(path: string): string;
/*@internal*/ getEnvironmentVariable(name: string): string;
/*@internal*/ tryEnableSourceMapsForHost?(): void;
setTimeout?(callback: (...args: any[]) => void, ms: number, ...args: any[]): any;
clearTimeout?(timeoutId: any): void;
}
export interface FileWatcher {
close(): void;
}
export interface DirectoryWatcher extends FileWatcher {
directoryName: string;
referenceCount: number;
}
declare var require: any;
declare var process: any;
declare var global: any;
declare var __filename: string;
declare class Enumerator {
public atEnd(): boolean;
public moveNext(): boolean;
public item(): any;
constructor(o: any);
}
declare var ChakraHost: {
args: string[];
currentDirectory: string;
executingFile: string;
newLine?: string;
useCaseSensitiveFileNames?: boolean;
echo(s: string): void;
quit(exitCode?: number): void;
fileExists(path: string): boolean;
directoryExists(path: string): boolean;
createDirectory(path: string): void;
resolvePath(path: string): string;
readFile(path: string): string;
writeFile(path: string, contents: string): void;
getDirectories(path: string): string[];
readDirectory(path: string, extensions?: string[], basePaths?: string[], excludeEx?: string, includeFileEx?: string, includeDirEx?: string): string[];
watchFile?(path: string, callback: FileWatcherCallback): FileWatcher;
watchDirectory?(path: string, callback: DirectoryWatcherCallback, recursive?: boolean): FileWatcher;
realpath(path: string): string;
getEnvironmentVariable?(name: string): string;
};
export let sys: System = (function() {
function getWScriptSystem(): System {
const fso = new ActiveXObject("Scripting.FileSystemObject");
const shell = new ActiveXObject("WScript.Shell");
const fileStream = new ActiveXObject("ADODB.Stream");
fileStream.Type = 2 /*text*/;
const binaryStream = new ActiveXObject("ADODB.Stream");
binaryStream.Type = 1 /*binary*/;
const args: string[] = [];
for (let i = 0; i < WScript.Arguments.length; i++) {
args[i] = WScript.Arguments.Item(i);
}
function readFile(fileName: string, encoding?: string): string {
if (!fso.FileExists(fileName)) {
return undefined;
}
fileStream.Open();
try {
if (encoding) {
fileStream.Charset = encoding;
fileStream.LoadFromFile(fileName);
}
else {
// Load file and read the first two bytes into a string with no interpretation
fileStream.Charset = "x-ansi";
fileStream.LoadFromFile(fileName);
const bom = fileStream.ReadText(2) || "";
// Position must be at 0 before encoding can be changed
fileStream.Position = 0;
// [0xFF,0xFE] and [0xFE,0xFF] mean utf-16 (little or big endian), otherwise default to utf-8
fileStream.Charset = bom.length >= 2 && (bom.charCodeAt(0) === 0xFF && bom.charCodeAt(1) === 0xFE || bom.charCodeAt(0) === 0xFE && bom.charCodeAt(1) === 0xFF) ? "unicode" : "utf-8";
}
// ReadText method always strips byte order mark from resulting string
return fileStream.ReadText();
}
catch (e) {
throw e;
}
finally {
fileStream.Close();
}
}
function writeFile(fileName: string, data: string, writeByteOrderMark?: boolean): void {
fileStream.Open();
binaryStream.Open();
try {
// Write characters in UTF-8 encoding
fileStream.Charset = "utf-8";
fileStream.WriteText(data);
// If we don't want the BOM, then skip it by setting the starting location to 3 (size of BOM).
// If not, start from position 0, as the BOM will be added automatically when charset==utf8.
if (writeByteOrderMark) {
fileStream.Position = 0;
}
else {
fileStream.Position = 3;
}
fileStream.CopyTo(binaryStream);
binaryStream.SaveToFile(fileName, 2 /*overwrite*/);
}
finally {
binaryStream.Close();
fileStream.Close();
}
}
function getNames(collection: any): string[] {
const result: string[] = [];
for (let e = new Enumerator(collection); !e.atEnd(); e.moveNext()) {
result.push(e.item().Name);
}
return result.sort();
}
function getDirectories(path: string): string[] {
const folder = fso.GetFolder(path);
return getNames(folder.subfolders);
}
function getAccessibleFileSystemEntries(path: string): FileSystemEntries {
try {
const folder = fso.GetFolder(path || ".");
const files = getNames(folder.files);
const directories = getNames(folder.subfolders);
return { files, directories };
}
catch (e) {
return { files: [], directories: [] };
}
}
function readDirectory(path: string, extensions?: string[], excludes?: string[], includes?: string[]): string[] {
return matchFiles(path, extensions, excludes, includes, /*useCaseSensitiveFileNames*/ false, shell.CurrentDirectory, getAccessibleFileSystemEntries);
}
const wscriptSystem: System = {
args,
newLine: "\r\n",
useCaseSensitiveFileNames: false,
write(s: string): void {
WScript.StdOut.Write(s);
},
readFile,
writeFile,
resolvePath(path: string): string {
return fso.GetAbsolutePathName(path);
},
fileExists(path: string): boolean {
return fso.FileExists(path);
},
directoryExists(path: string) {
return fso.FolderExists(path);
},
createDirectory(directoryName: string) {
if (!wscriptSystem.directoryExists(directoryName)) {
fso.CreateFolder(directoryName);
}
},
getExecutingFilePath() {
return WScript.ScriptFullName;
},
getCurrentDirectory() {
return shell.CurrentDirectory;
},
getDirectories,
getEnvironmentVariable(name: string) {
return new ActiveXObject("WScript.Shell").ExpandEnvironmentStrings(`%${name}%`);
},
readDirectory,
exit(exitCode?: number): void {
try {
WScript.Quit(exitCode);
}
catch (e) {
}
}
};
return wscriptSystem;
}
function getNodeSystem(): System {
const _fs = require("fs");
const _path = require("path");
const _os = require("os");
const _crypto = require("crypto");
const useNonPollingWatchers = process.env["TSC_NONPOLLING_WATCHER"];
function createWatchedFileSet() {
const dirWatchers = createMap<DirectoryWatcher>();
// One file can have multiple watchers
const fileWatcherCallbacks = createMap<FileWatcherCallback[]>();
return { addFile, removeFile };
function reduceDirWatcherRefCountForFile(fileName: string) {
const dirName = getDirectoryPath(fileName);
const watcher = dirWatchers[dirName];
if (watcher) {
watcher.referenceCount -= 1;
if (watcher.referenceCount <= 0) {
watcher.close();
delete dirWatchers[dirName];
}
}
}
function addDirWatcher(dirPath: string): void {
let watcher = dirWatchers[dirPath];
if (watcher) {
watcher.referenceCount += 1;
return;
}
watcher = _fs.watch(
dirPath,
{ persistent: true },
(eventName: string, relativeFileName: string) => fileEventHandler(eventName, relativeFileName, dirPath)
);
watcher.referenceCount = 1;
dirWatchers[dirPath] = watcher;
return;
}
function addFileWatcherCallback(filePath: string, callback: FileWatcherCallback): void {
multiMapAdd(fileWatcherCallbacks, filePath, callback);
}
function addFile(fileName: string, callback: FileWatcherCallback): WatchedFile {
addFileWatcherCallback(fileName, callback);
addDirWatcher(getDirectoryPath(fileName));
return { fileName, callback };
}
function removeFile(watchedFile: WatchedFile) {
removeFileWatcherCallback(watchedFile.fileName, watchedFile.callback);
reduceDirWatcherRefCountForFile(watchedFile.fileName);
}
function removeFileWatcherCallback(filePath: string, callback: FileWatcherCallback) {
multiMapRemove(fileWatcherCallbacks, filePath, callback);
}
function fileEventHandler(eventName: string, relativeFileName: string, baseDirPath: string) {
// When files are deleted from disk, the triggered "rename" event would have a relativefileName of "undefined"
const fileName = typeof relativeFileName !== "string"
? undefined
: ts.getNormalizedAbsolutePath(relativeFileName, baseDirPath);
// Some applications save a working file via rename operations
if ((eventName === "change" || eventName === "rename") && fileWatcherCallbacks[fileName]) {
for (const fileCallback of fileWatcherCallbacks[fileName]) {
fileCallback(fileName);
}
}
}
}
const watchedFileSet = createWatchedFileSet();
function isNode4OrLater(): boolean {
return parseInt(process.version.charAt(1)) >= 4;
}
function isFileSystemCaseSensitive(): boolean {
// win32\win64 are case insensitive platforms
if (platform === "win32" || platform === "win64") {
return false;
}
// convert current file name to upper case / lower case and check if file exists
// (guards against cases when name is already all uppercase or lowercase)
return !fileExists(__filename.toUpperCase()) || !fileExists(__filename.toLowerCase());
}
const platform: string = _os.platform();
const useCaseSensitiveFileNames = isFileSystemCaseSensitive();
function readFile(fileName: string, _encoding?: string): string {
if (!fileExists(fileName)) {
return undefined;
}
const buffer = _fs.readFileSync(fileName);
let len = buffer.length;
if (len >= 2 && buffer[0] === 0xFE && buffer[1] === 0xFF) {
// Big endian UTF-16 byte order mark detected. Since big endian is not supported by node.js,
// flip all byte pairs and treat as little endian.
len &= ~1;
for (let i = 0; i < len; i += 2) {
const temp = buffer[i];
buffer[i] = buffer[i + 1];
buffer[i + 1] = temp;
}
return buffer.toString("utf16le", 2);
}
if (len >= 2 && buffer[0] === 0xFF && buffer[1] === 0xFE) {
// Little endian UTF-16 byte order mark detected
return buffer.toString("utf16le", 2);
}
if (len >= 3 && buffer[0] === 0xEF && buffer[1] === 0xBB && buffer[2] === 0xBF) {
// UTF-8 byte order mark detected
return buffer.toString("utf8", 3);
}
// Default is UTF-8 with no byte order mark
return buffer.toString("utf8");
}
function writeFile(fileName: string, data: string, writeByteOrderMark?: boolean): void {
// If a BOM is required, emit one
if (writeByteOrderMark) {
data = "\uFEFF" + data;
}
let fd: number;
try {
fd = _fs.openSync(fileName, "w");
_fs.writeSync(fd, data, undefined, "utf8");
}
finally {
if (fd !== undefined) {
_fs.closeSync(fd);
}
}
}
function getAccessibleFileSystemEntries(path: string): FileSystemEntries {
try {
const entries = _fs.readdirSync(path || ".").sort();
const files: string[] = [];
const directories: string[] = [];
for (const entry of entries) {
// This is necessary because on some file system node fails to exclude
// "." and "..". See https://github.com/nodejs/node/issues/4002
if (entry === "." || entry === "..") {
continue;
}
const name = combinePaths(path, entry);
let stat: any;
try {
stat = _fs.statSync(name);
}
catch (e) {
continue;
}
if (stat.isFile()) {
files.push(entry);
}
else if (stat.isDirectory()) {
directories.push(entry);
}
}
return { files, directories };
}
catch (e) {
return { files: [], directories: [] };
}
}
function readDirectory(path: string, extensions?: string[], excludes?: string[], includes?: string[]): string[] {
return matchFiles(path, extensions, excludes, includes, useCaseSensitiveFileNames, process.cwd(), getAccessibleFileSystemEntries);
}
const enum FileSystemEntryKind {
File,
Directory
}
function fileSystemEntryExists(path: string, entryKind: FileSystemEntryKind): boolean {
try {
const stat = _fs.statSync(path);
switch (entryKind) {
case FileSystemEntryKind.File: return stat.isFile();
case FileSystemEntryKind.Directory: return stat.isDirectory();
}
}
catch (e) {
return false;
}
}
function fileExists(path: string): boolean {
return fileSystemEntryExists(path, FileSystemEntryKind.File);
}
function directoryExists(path: string): boolean {
return fileSystemEntryExists(path, FileSystemEntryKind.Directory);
}
function getDirectories(path: string): string[] {
return filter<string>(_fs.readdirSync(path), dir => fileSystemEntryExists(combinePaths(path, dir), FileSystemEntryKind.Directory));
}
const noOpFileWatcher: FileWatcher = { close: noop };
const nodeSystem: System = {
args: process.argv.slice(2),
newLine: _os.EOL,
useCaseSensitiveFileNames: useCaseSensitiveFileNames,
write(s: string): void {
process.stdout.write(s);
},
readFile,
writeFile,
watchFile: (fileName, callback, pollingInterval) => {
if (useNonPollingWatchers) {
const watchedFile = watchedFileSet.addFile(fileName, callback);
return {
close: () => watchedFileSet.removeFile(watchedFile)
};
}
else {
_fs.watchFile(fileName, { persistent: true, interval: pollingInterval || 250 }, fileChanged);
return {
close: () => _fs.unwatchFile(fileName, fileChanged)
};
}
function fileChanged(curr: any, prev: any) {
if (+curr.mtime <= +prev.mtime) {
return;
}
callback(fileName);
}
},
watchDirectory: (directoryName, callback, recursive) => {
// Node 4.0 `fs.watch` function supports the "recursive" option on both OSX and Windows
// (ref: https://github.com/nodejs/node/pull/2649 and https://github.com/Microsoft/TypeScript/issues/4643)
let options: any;
if (!directoryExists(directoryName)) {
return noOpFileWatcher;
}
if (isNode4OrLater() && (process.platform === "win32" || process.platform === "darwin")) {
options = { persistent: true, recursive: !!recursive };
}
else {
options = { persistent: true };
}
return _fs.watch(
directoryName,
options,
(eventName: string, relativeFileName: string) => {
// In watchDirectory we only care about adding and removing files (when event name is
// "rename"); changes made within files are handled by corresponding fileWatchers (when
// event name is "change")
if (eventName === "rename") {
// When deleting a file, the passed baseFileName is null
callback(!relativeFileName ? relativeFileName : normalizePath(combinePaths(directoryName, relativeFileName)));
};
}
);
},
resolvePath: function(path: string): string {
return _path.resolve(path);
},
fileExists,
directoryExists,
createDirectory(directoryName: string) {
if (!nodeSystem.directoryExists(directoryName)) {
_fs.mkdirSync(directoryName);
}
},
getExecutingFilePath() {
return __filename;
},
getCurrentDirectory() {
return process.cwd();
},
getDirectories,
getEnvironmentVariable(name: string) {
return process.env[name] || "";
},
readDirectory,
getModifiedTime(path) {
try {
return _fs.statSync(path).mtime;
}
catch (e) {
return undefined;
}
},
createHash(data) {
const hash = _crypto.createHash("md5");
hash.update(data);
return hash.digest("hex");
},
getMemoryUsage() {
if (global.gc) {
global.gc();
}
return process.memoryUsage().heapUsed;
},
getFileSize(path) {
try {
const stat = _fs.statSync(path);
if (stat.isFile()) {
return stat.size;
}
}
catch (e) { }
return 0;
},
exit(exitCode?: number): void {
process.exit(exitCode);
},
realpath(path: string): string {
return _fs.realpathSync(path);
},
tryEnableSourceMapsForHost() {
try {
require("source-map-support").install();
}
catch (e) {
// Could not enable source maps.
}
},
setTimeout,
clearTimeout
};
return nodeSystem;
}
function getChakraSystem(): System {
const realpath = ChakraHost.realpath && ((path: string) => ChakraHost.realpath(path));
return {
newLine: ChakraHost.newLine || "\r\n",
args: ChakraHost.args,
useCaseSensitiveFileNames: !!ChakraHost.useCaseSensitiveFileNames,
write: ChakraHost.echo,
readFile(path: string, _encoding?: string) {
// encoding is automatically handled by the implementation in ChakraHost
return ChakraHost.readFile(path);
},
writeFile(path: string, data: string, writeByteOrderMark?: boolean) {
// If a BOM is required, emit one
if (writeByteOrderMark) {
data = "\uFEFF" + data;
}
ChakraHost.writeFile(path, data);
},
resolvePath: ChakraHost.resolvePath,
fileExists: ChakraHost.fileExists,
directoryExists: ChakraHost.directoryExists,
createDirectory: ChakraHost.createDirectory,
getExecutingFilePath: () => ChakraHost.executingFile,
getCurrentDirectory: () => ChakraHost.currentDirectory,
getDirectories: ChakraHost.getDirectories,
getEnvironmentVariable: ChakraHost.getEnvironmentVariable || (() => ""),
readDirectory: (path: string, extensions?: string[], excludes?: string[], includes?: string[]) => {
const pattern = getFileMatcherPatterns(path, excludes, includes, !!ChakraHost.useCaseSensitiveFileNames, ChakraHost.currentDirectory);
return ChakraHost.readDirectory(path, extensions, pattern.basePaths, pattern.excludePattern, pattern.includeFilePattern, pattern.includeDirectoryPattern);
},
exit: ChakraHost.quit,
realpath
};
}
function recursiveCreateDirectory(directoryPath: string, sys: System) {
const basePath = getDirectoryPath(directoryPath);
const shouldCreateParent = directoryPath !== basePath && !sys.directoryExists(basePath);
if (shouldCreateParent) {
recursiveCreateDirectory(basePath, sys);
}
if (shouldCreateParent || !sys.directoryExists(directoryPath)) {
sys.createDirectory(directoryPath);
}
}
let sys: System;
if (typeof ChakraHost !== "undefined") {
sys = getChakraSystem();
}
else if (typeof WScript !== "undefined" && typeof ActiveXObject === "function") {
sys = getWScriptSystem();
}
else if (typeof process !== "undefined" && process.nextTick && !process.browser && typeof require !== "undefined") {
// process and process.nextTick checks if current environment is node-like
// process.browser check excludes webpack and browserify
sys = getNodeSystem();
}
if (sys) {
// patch writefile to create folder before writing the file
const originalWriteFile = sys.writeFile;
sys.writeFile = function(path, data, writeBom) {
const directoryPath = getDirectoryPath(normalizeSlashes(path));
if (directoryPath && !sys.directoryExists(directoryPath)) {
recursiveCreateDirectory(directoryPath, sys);
}
originalWriteFile.call(sys, path, data, writeBom);
};
}
return sys;
})();
if (sys && sys.getEnvironmentVariable) {
Debug.currentAssertionLevel = /^development$/i.test(sys.getEnvironmentVariable("NODE_ENV"))
? AssertionLevel.Normal
: AssertionLevel.None;
}
}