node/src/node.js at master · jabley/node · GitHub

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(function () { // annonymous namespace

// deprecation errors

GLOBAL.__module = function () {

throw new Error("'__module' has been renamed to 'module'");

};

GLOBAL.include = function () {

throw new Error("include(module) has been removed. Use process.mixin(GLOBAL, require(module)) to get the same effect.");

};

GLOBAL.puts = function () {

throw new Error("puts() has moved. Use require('sys') to bring it back.");

};

GLOBAL.print = function () {

throw new Error("print() has moved. Use require('sys') to bring it back.");

};

GLOBAL.p = function () {

throw new Error("p() has moved. Use require('sys') to bring it back.");

};

process.debug = function () {

throw new Error("process.debug() has moved. Use require('sys') to bring it back.");

};

process.error = function () {

throw new Error("process.error() has moved. Use require('sys') to bring it back.");

};

GLOBAL.node = {};

node.createProcess = function () {

throw new Error("node.createProcess() has been changed to process.createChildProcess() update your code");

};

node.exec = function () {

throw new Error("process.exec() has moved. Use require('sys') to bring it back.");

};

node.http = {};

node.http.createServer = function () {

throw new Error("node.http.createServer() has moved. Use require('http') to access it.");

};

node.http.createClient = function () {

throw new Error("node.http.createClient() has moved. Use require('http') to access it.");

};

node.tcp = {};

node.tcp.createServer = function () {

throw new Error("node.tcp.createServer() has moved. Use require('tcp') to access it.");

};

node.tcp.createConnection = function () {

throw new Error("node.tcp.createConnection() has moved. Use require('tcp') to access it.");

};

node.dns = {};

node.dns.createConnection = function () {

throw new Error("node.dns.createConnection() has moved. Use require('dns') to access it.");

};

node.inherits = function () {

throw new Error("node.inherits() has moved. Use require('sys') to access it.");

};

process.createChildProcess = function (file, args, env) {

var child = new process.ChildProcess();

args = args || [];

env = env || process.ENV;

var envPairs = [];

for (var key in env) {

if (env.hasOwnProperty(key)) {

envPairs.push(key + "=" + env[key]);

}

// TODO Note envPairs is not currently used in child_process.cc. The PATH

// needs to be searched for the 'file' command if 'file' does not contain

// a '/' character.

child.spawn(file, args, envPairs);

return child;

};

process.assert = function (x, msg) {

if (!(x)) throw new Error(msg || "assertion error");

};

// From jQuery.extend in the jQuery JavaScript Library v1.3.2

// Dual licensed under the MIT and GPL licenses.

// http://docs.jquery.com/License

process.mixin = function() {

// copy reference to target object

var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;

// Handle a deep copy situation

if ( typeof target === "boolean" ) {

deep = target;

target = arguments[1] || {};

// skip the boolean and the target

i = 2;

}

// Handle case when target is a string or something (possible in deep copy)

if ( typeof target !== "object" && !(typeof target === 'function') )

target = {};

// mixin process itself if only one argument is passed

if ( length == i ) {

target = GLOBAL;

--i;

}

for ( ; i < length; i++ ) {

// Only deal with non-null/undefined values

if ( (options = arguments[ i ]) != null ) {

// Extend the base object

for ( var name in options ) {

var src = target[ name ], copy = options[ name ];

// Prevent never-ending loop

if ( target === copy )

continue;

// Recurse if we're merging object values

if ( deep && copy && typeof copy === "object" ) {

target[ name ] = process.mixin( deep,

// Never move original objects, clone them

src || ( copy.length != null ? [ ] : { } )

, copy );

// Don't bring in undefined values

} else {

target[ name ] = copy;

}

// Return the modified object

return target;

};

// Event

// process.EventEmitter is defined in src/events.cc

// process.EventEmitter.prototype.emit() is also defined there.

process.EventEmitter.prototype.addListener = function (type, listener) {

if (listener instanceof Function) {

if (!this._events) this._events = {};

if (!this._events.hasOwnProperty(type)) this._events[type] = [];

// To avoid recursion in the case that type == "newListeners"! Before

// adding it to the listeners, first emit "newListeners".

this.emit("newListener", type, listener);

this._events[type].push(listener);

}

return this;

};

process.EventEmitter.prototype.removeListener = function (type, listener) {

if (listener instanceof Function) {

// does not use listeners(), so no side effect of creating _events[type]

if (!this._events || !this._events.hasOwnProperty(type)) return;

var list = this._events[type];

if (list.indexOf(listener) < 0) return;

list.splice(list.indexOf(listener), 1);

}

return this;

};

process.EventEmitter.prototype.listeners = function (type) {

if (!this._events) this._events = {};

if (!this._events.hasOwnProperty(type)) this._events[type] = [];

return this._events[type];

};

process.inherits = function (ctor, superCtor) {

var tempCtor = function(){};

tempCtor.prototype = superCtor.prototype;

ctor.super_ = superCtor;

ctor.prototype = new tempCtor();

ctor.prototype.constructor = ctor;

};

// Promise

process.Promise = function () {

process.EventEmitter.call();

this._blocking = false;

this._hasFired = false;

};

process.inherits(process.Promise, process.EventEmitter);

process.Promise.prototype.timeout = function(timeout) {

if (timeout === undefined) {

return this._timeoutDuration;

}

this._timeoutDuration = timeout;

if (this._timer) {

clearTimeout(this._timer);

this._timer = null;

}

var promiseComplete = false;

var onComplete = function() {

promiseComplete = true;

if (this._timer) {

clearTimeout(this._timer);

this._timer = null;

}

};

this

.addCallback(onComplete)

.addCancelback(onComplete)

.addErrback(onComplete);

var self = this;

this._timer = setTimeout(function() {

self._timer = null;

if (promiseComplete) {

return;

}

self.emitError(new Error('timeout'));

}, this._timeoutDuration);

return this;

};

process.Promise.prototype.cancel = function() {

if(this._cancelled) return;

this._cancelled = true;

this._events['success'] = [];

this._events['error'] = [];

this.emitCancel();

};

process.Promise.prototype.emitCancel = function() {

Array.prototype.unshift.call(arguments, 'cancel')

this.emit.apply(this, arguments);

};

process.Promise.prototype.emitSuccess = function() {

if (this.hasFired) return;

this.hasFired = true;

Array.prototype.unshift.call(arguments, 'success')

this.emit.apply(this, arguments);

};

process.Promise.prototype.emitError = function() {

if (this.hasFired) return;

this.hasFired = true;

Array.prototype.unshift.call(arguments, 'error')

this.emit.apply(this, arguments);

};

process.Promise.prototype.addCallback = function (listener) {

this.addListener("success", listener);

return this;

};

process.Promise.prototype.addErrback = function (listener) {

this.addListener("error", listener);

return this;

};

process.Promise.prototype.addCancelback = function (listener) {

this.addListener("cancel", listener);

return this;

};

/* Poor Man's coroutines */

var coroutineStack = [];

process.Promise.prototype._destack = function () {

this._blocking = false;

while (coroutineStack.length > 0 &&

!coroutineStack[coroutineStack.length-1]._blocking)

{

coroutineStack.pop();

process.unloop("one");

}

};

process.Promise.prototype.wait = function () {

var self = this;

var ret;

var hadError = false;

self.addCallback(function () {

if (arguments.length == 1) {

ret = arguments[0];

} else if (arguments.length > 1) {

ret = Array.prototype.slice.call(arguments);

}

self._destack();

});

self.addErrback(function (arg) {

hadError = true;

ret = arg;

self._destack();

});

coroutineStack.push(self);

if (coroutineStack.length > 10) {

process.stdio.writeError("WARNING: promise.wait() is being called too often.\n");

}

self._blocking = true;

process.loop();

process.assert(self._blocking == false);

if (hadError) {

if (ret) {

throw ret;

} else {

throw new Error("Promise completed with error (No arguments given.)");

}

return ret;

};

// Signal Handlers

function isSignal (event) {

return event.slice(0, 3) === 'SIG' && process.hasOwnProperty(event);

};

process.addListener("newListener", function (event) {

if (isSignal(event) && process.listeners(event).length === 0) {

var handler = new process.SignalHandler(process[event]);

handler.addListener("signal", function () {

process.emit(event);

});

}

});

// Stat Change Watchers

var statWatchers = {};

process.watchFile = function (filename) {

var stat;

var options;

var listener;

if ("object" == typeof arguments[1]) {

options = arguments[1];

listener = arguments[2];

} else {

options = {};

listener = arguments[1];

}

if (options.persistent === undefined) options.persistent = true;

if (options.interval === undefined) options.interval = 0;

if (filename in statWatchers) {

stat = statWatchers[filename];

} else {

statWatchers[filename] = new process.Stat();

stat = statWatchers[filename];

stat.start(filename, options.persistent, options.interval);

}

stat.addListener("change", listener);

return stat;

};

process.unwatchFile = function (filename) {

if (filename in statWatchers) {

stat = statWatchers[filename];

stat.stop();

statWatchers[filename] = undefined;

}

};

process.Stats.prototype._checkModeProperty = function (property) {

return ((this.mode & property) === property);

};

process.Stats.prototype.isDirectory = function () {

return this._checkModeProperty(process.S_IFDIR);

};

process.Stats.prototype.isFile = function () {

return this._checkModeProperty(process.S_IFREG);

};

process.Stats.prototype.isBlockDevice = function () {

return this._checkModeProperty(process.S_IFBLK);

};

process.Stats.prototype.isCharacterDevice = function () {

return this._checkModeProperty(process.S_IFCHR);

};

process.Stats.prototype.isSymbolicLink = function () {

return this._checkModeProperty(process.S_IFLNK);

};

process.Stats.prototype.isFIFO = function () {

return this._checkModeProperty(process.S_IFIFO);

};

process.Stats.prototype.isSocket = function () {

return this._checkModeProperty(process.S_IFSOCK);

};

// Timers

GLOBAL.setTimeout = function (callback, after) {

var timer = new process.Timer();

timer.addListener("timeout", callback);

timer.start(after, 0);

return timer;

};

GLOBAL.setInterval = function (callback, repeat) {

var timer = new process.Timer();

timer.addListener("timeout", callback);

timer.start(repeat, repeat);

return timer;

};

GLOBAL.clearTimeout = function (timer) {

timer.stop();

};

GLOBAL.clearInterval = GLOBAL.clearTimeout;

// Modules

var debugLevel = 0;

if ("NODE_DEBUG" in process.ENV) debugLevel = 1;

function debug (x) {

if (debugLevel > 0) {

process.stdio.writeError(x + "\n");

}

// private constructor

function Module (id, parent) {

this.id = id;

this.exports = {};

this.parent = parent;

this.filename = null;

this.loaded = false;

this.loadPromise = null;

this.exited = false;

this.children = [];

};

var moduleCache = {};

function createModule (id, parent) {

if (id in moduleCache) {

debug("found " + JSON.stringify(id) + " in cache");

return moduleCache[id];

}

debug("didn't found " + JSON.stringify(id) + " in cache. creating new module");

var m = new Module(id, parent);

moduleCache[id] = m;

return m;

};

function createInternalModule (id, constructor) {

var m = createModule(id);

constructor(m.exports);

m.loaded = true;

return m;

};

var posixModule = createInternalModule("posix", function (exports) {

exports.Stats = process.Stats;

function callback (promise) {

return function () {

if (arguments[0] instanceof Error) {

promise.emitError.apply(promise, arguments);

} else {

promise.emitSuccess.apply(promise, arguments);

}

};

}

// Yes, the follow could be easily DRYed up but I provide the explicit

// list to make the arguments clear.

exports.close = function (fd) {

var promise = new process.Promise();

process.fs.close(fd, callback(promise));

return promise;

};

exports.closeSync = function (fd) {

return process.fs.close(fd);

};

exports.open = function (path, flags, mode) {

var promise = new process.Promise();

process.fs.open(path, flags, mode, callback(promise));

return promise;

};

exports.openSync = function (path, flags, mode) {

return process.fs.open(path, flags, mode);

};

exports.read = function (fd, length, position, encoding) {

var promise = new process.Promise();

encoding = encoding || "binary";

process.fs.read(fd, length, position, encoding, callback(promise));

return promise;

};

exports.readSync = function (fd, length, position, encoding) {

encoding = encoding || "binary";

return process.fs.read(fd, length, position, encoding);

};

exports.write = function (fd, data, position, encoding) {

var promise = new process.Promise();

encoding = encoding || "binary";

process.fs.write(fd, data, position, encoding, callback(promise));

return promise;

};

exports.writeSync = function (fd, data, position, encoding) {

encoding = encoding || "binary";

return process.fs.write(fd, data, position, encoding);

};

exports.rename = function (oldPath, newPath) {

var promise = new process.Promise();

process.fs.rename(oldPath, newPath, callback(promise));

return promise;

};

exports.renameSync = function (oldPath, newPath) {

return process.fs.rename(oldPath, newPath);

};

exports.rmdir = function (path) {

var promise = new process.Promise();

process.fs.rmdir(path, callback(promise));

return promise;

};

exports.rmdirSync = function (path) {

return process.fs.rmdir(path);

};

exports.mkdir = function (path, mode) {

var promise = new process.Promise();

process.fs.mkdir(path, mode, callback(promise));

return promise;

};

exports.mkdirSync = function (path, mode) {

return process.fs.mkdir(path, mode);

};

exports.sendfile = function (outFd, inFd, inOffset, length) {

var promise = new process.Promise();

process.fs.sendfile(outFd, inFd, inOffset, length, callback(promise));

return promise;

};

exports.sendfileSync = function (outFd, inFd, inOffset, length) {

return process.fs.sendfile(outFd, inFd, inOffset, length);

};

exports.readdir = function (path) {

var promise = new process.Promise();

process.fs.readdir(path, callback(promise));

return promise;

};

exports.readdirSync = function (path) {

return process.fs.readdir(path);

};

exports.stat = function (path) {

var promise = new process.Promise();

process.fs.stat(path, callback(promise));

return promise;

};

exports.statSync = function (path) {

return process.fs.stat(path);

};

exports.unlink = function (path) {

var promise = new process.Promise();

process.fs.unlink(path, callback(promise));

return promise;

};

exports.unlinkSync = function (path) {

return process.fs.unlink(path);

};

exports.cat = function (path, encoding) {

var promise = new process.Promise();

encoding = encoding || "utf8"; // default to utf8

exports.open(path, process.O_RDONLY, 0666).addCallback(function (fd) {

var content = "", pos = 0;

function readChunk () {

exports.read(fd, 16*1024, pos, encoding).addCallback(function (chunk, bytes_read) {

if (chunk) {

if (chunk.constructor === String) {

content += chunk;

} else {

content = content.concat(chunk);

}

pos += bytes_read;

readChunk();

} else {

promise.emitSuccess(content);

exports.close(fd);

}

}).addErrback(function () {

promise.emitError.call(arguments);

});

}

readChunk();

}).addErrback(function () {

promise.emitError.apply(promise, arguments);

});

return promise;

};

});

var posix = posixModule.exports;

var pathModule = createInternalModule("path", function (exports) {

exports.join = function () {

var joined = "",

dotre = /^\.\//,

dotreplace = "",

dotdotre = /(^|(\/)([^\/]+\/)?)\.\.\//g,

dotdotreplace = ""

for (var i = 0; i < arguments.length; i++) {

var part = arguments[i].toString();

/* Some logic to shorten paths */

if (part === ".") continue;

while (dotre.exec(part)) part = part.replace(dotre, dotreplace);

if (i === 0) {

part = part.replace(/\/*$/, "/");

} else if (i === arguments.length - 1) {

part = part.replace(/^\/*/, "");

} else {

part = part.replace(/^\/*/, "").replace(/\/*$/, "/");

}

joined += part;

}

// replace /foo/../bar/baz with /bar/baz

while (dotdotre.exec(joined)) joined = joined.replace(dotdotre, dotdotreplace);

return joined;

};

exports.dirname = function (path) {

if (path.charAt(0) !== "/") path = "./" + path;

var parts = path.split("/");

return parts.slice(0, parts.length-1).join("/");

};

exports.filename = function (path) {

if (path.charAt(0) !== "/") path = "./" + path;

var parts = path.split("/");

return parts[parts.length-1];

};

exports.exists = function (path, callback) {

var p = posix.stat(path);

p.addCallback(function () { callback(true); });

p.addErrback(function () { callback(false); });

};

});

var path = pathModule.exports;

process.paths = [ path.join(process.installPrefix, "lib/node/libraries")

];

if (process.ENV["HOME"]) {

process.paths.unshift(path.join(process.ENV["HOME"], ".node_libraries"));

}

if (process.ENV["NODE_PATH"]) {

process.paths = process.ENV["NODE_PATH"].split(":").concat(process.paths);

}

function findModulePath (id, dirs, callback) {

process.assert(dirs.constructor == Array);

if (/^https?:\/\//.exec(id)) {

callback(id);

return;

}

if (/\.(js|node)$/.exec(id)) {

throw new Error("No longer accepting filename extension in module names");

}

if (dirs.length == 0) {

callback();

return;

}

var dir = dirs[0];

var rest = dirs.slice(1, dirs.length);

if (id.charAt(0) == '/') {

dir = '';

rest = [];

}

var locations = [

path.join(dir, id + ".js"),

path.join(dir, id + ".node"),

path.join(dir, id, "index.js"),

path.join(dir, id, "index.addon")

];

var searchLocations = function() {

var location = locations.shift();

if (location === undefined) {

findModulePath(id, rest, callback);

return;

}

path.exists(location, function (found) {

if (found) {

callback(location);

return;

}

searchLocations();

});

};

searchLocations();

}

function loadModule (request, parent) {

// This is the promise which is actually returned from require.async()

var loadPromise = new process.Promise();

// debug("loadModule REQUEST " + (request) + " parent: " + JSON.stringify(parent));

var id, paths;

if (request.charAt(0) == "." && (request.charAt(1) == "/" || request.charAt(1) == ".")) {

// Relative request

var parentIdPath = path.dirname(parent.id +

(path.filename(parent.filename).match(/^index\.(js|addon)$/) ? "/" : ""));

id = path.join(parentIdPath, request);

// debug("RELATIVE: requested:"+request+" set ID to: "+id+" from "+parent.id+"("+parentIdPath+")");

paths = [path.dirname(parent.filename)];

} else {

id = request;

// debug("ABSOLUTE: id="+id);

paths = process.paths;

}

if (id in moduleCache) {

debug("found " + JSON.stringify(id) + " in cache");

// In cache

var module = moduleCache[id];

setTimeout(function () {

loadPromise.emitSuccess(module.exports);

}, 0);

} else {

debug("looking for " + JSON.stringify(id) + " in " + JSON.stringify(paths));

// Not in cache

findModulePath(request, paths, function (filename) {

if (!filename) {

loadPromise.emitError(new Error("Cannot find module '" + request + "'"));

} else {

var module = createModule(id, parent);

module.load(filename, loadPromise);

}

});

}

return loadPromise;

};

Module.prototype.load = function (filename, loadPromise) {

debug("load " + JSON.stringify(filename) + " for module " + JSON.stringify(this.id));

process.assert(!this.loaded);

process.assert(!this.loadPromise);

this.loadPromise = loadPromise;

this.filename = filename;

if (filename.match(/\.node$/)) {

this.loadObject(filename, loadPromise);

} else {

this.loadScript(filename, loadPromise);

}

};

Module.prototype.loadObject = function (filename, loadPromise) {

var self = this;

// XXX Not yet supporting loading from HTTP. would need to download the

// file, store it to tmp then run dlopen on it.

setTimeout(function () {

self.loaded = true;

process.dlopen(filename, self.exports); // FIXME synchronus

loadPromise.emitSuccess(self.exports);

}, 0);

};

function cat (id, loadPromise) {

var promise;

debug(id);

if (id.match(/^http:\/\//)) {

promise = new process.Promise();

loadModule('http', process.mainModule)

.addCallback(function(http) {

http.cat(id)

.addCallback(function(content) {

promise.emitSuccess(content);

})

.addErrback(function() {

promise.emitError.apply(null, arguments);

});

})

.addErrback(function() {

loadPromise.emitError(new Error("could not load core module \"http\""));

});

} else {

promise = posix.cat(id);

}

return promise;

}

Module.prototype.loadScript = function (filename, loadPromise) {

var self = this;

var catPromise = cat(filename, loadPromise);

catPromise.addErrback(function () {

loadPromise.emitError(new Error("Error reading " + filename));

});

catPromise.addCallback(function (content) {

// remove shebang

content = content.replace(/^\#\!.*/, '');

function requireAsync (url) {

return loadModule(url, self); // new child

}

function require (url) {

return requireAsync(url).wait();

}

require.paths = process.paths;

require.async = requireAsync;

require.main = process.mainModule;

// create wrapper function

var wrapper = "var __wrap__ = function (exports, require, module, __filename) { "

+ content

+ "\n}; __wrap__;";

var compiledWrapper = process.compile(wrapper, filename);

try {

compiledWrapper.apply(self.exports, [self.exports, require, self, filename]);

} catch (e) {

loadPromise.emitError(e);

return;

}

self.waitChildrenLoad(function () {

self.loaded = true;

loadPromise.emitSuccess(self.exports);

});

};

Module.prototype.waitChildrenLoad = function (callback) {

var nloaded = 0;

var children = this.children;

for (var i = 0; i < children.length; i++) {

var child = children[i];

if (child.loaded) {

nloaded++;

} else {

child.loadPromise.addCallback(function () {

nloaded++;

if (children.length == nloaded && callback) callback();

});

}

if (children.length == nloaded && callback) callback();

};

process.exit = function (code) {

process.emit("exit");

process.reallyExit(code);

};

var cwd = process.cwd();

// Make process.ARGV[0] and process.ARGV[1] into full paths.

if (process.ARGV[0].indexOf('/') > 0) {

process.ARGV[0] = path.join(cwd, process.ARGV[0]);

}

if (process.ARGV[1].charAt(0) != "/" && !(/^http:\/\//).exec(process.ARGV[1])) {

process.ARGV[1] = path.join(cwd, process.ARGV[1]);

}

// Load the main module--the command line argument.

process.mainModule = createModule(".");

var loadPromise = new process.Promise();

process.mainModule.load(process.ARGV[1], loadPromise);

// All our arguments are loaded. We've evaluated all of the scripts. We

// might even have created TCP servers. Now we enter the main eventloop. If

// there are no watchers on the loop (except for the ones that were

// ev_unref'd) then this function exits. As long as there are active

// watchers, it blocks.

process.loop();

process.emit("exit");

}()); // end annonymous namespace

node/src/node.js at master · jabley/node · GitHub

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