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node.js
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node.js
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(function (process) {
process.global.process = process;
process.global.global = process.global;
global.GLOBAL = global;
/** deprecation errors ************************************************/
function removed (reason) {
return function () {
throw new Error(reason)
}
}
GLOBAL.__module = removed("'__module' has been renamed to 'module'");
GLOBAL.include = removed("include(module) has been removed. Use process.mixin(GLOBAL, require(module)) to get the same effect.");
GLOBAL.puts = removed("puts() has moved. Use require('sys') to bring it back.");
GLOBAL.print = removed("print() has moved. Use require('sys') to bring it back.");
GLOBAL.p = removed("p() has moved. Use require('sys') to bring it back.");
process.debug = removed("process.debug() has moved. Use require('sys') to bring it back.");
process.error = removed("process.error() has moved. Use require('sys') to bring it back.");
process.watchFile = removed("process.watchFile() has moved to fs.watchFile()");
process.unwatchFile = removed("process.unwatchFile() has moved to fs.unwatchFile()");
GLOBAL.node = {};
node.createProcess = removed("node.createProcess() has been changed to process.createChildProcess() update your code");
node.exec = removed("process.exec() has moved. Use require('sys') to bring it back.");
node.inherits = removed("node.inherits() has moved. Use require('sys') to access it.");
process.inherits = removed("process.inherits() has moved to sys.inherits.");
node.http = {};
node.http.createServer = removed("node.http.createServer() has moved. Use require('http') to access it.");
node.http.createClient = removed("node.http.createClient() has moved. Use require('http') to access it.");
node.tcp = {};
node.tcp.createServer = removed("node.tcp.createServer() has moved. Use require('tcp') to access it.");
node.tcp.createConnection = removed("node.tcp.createConnection() has moved. Use require('tcp') to access it.");
node.dns = {};
node.dns.createConnection = removed("node.dns.createConnection() has moved. Use require('dns') to access it.");
/**********************************************************************/
// Module
var internalModuleCache = {};
function Module (id, parent) {
this.id = id;
this.exports = {};
this.parent = parent;
if (parent) {
this.moduleCache = parent.moduleCache;
} else {
this.moduleCache = {};
}
this.moduleCache[this.id] = this;
this.filename = null;
this.loaded = false;
this.exited = false;
this.children = [];
};
function createInternalModule (id, constructor) {
var m = new Module(id);
constructor(m.exports);
m.loaded = true;
internalModuleCache[id] = m;
return m;
};
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
// Copyright (c) 2009 John Resig
// Dual licensed under the MIT and GPL licenses.
// http://docs.jquery.com/License
// Modified for node.js (formely for copying properties correctly)
process.mixin = function() {
// copy reference to target object
var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, source;
// 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 ( (source = arguments[i]) != null ) {
// Extend the base object
Object.getOwnPropertyNames(source).forEach(function(k){
var d = Object.getOwnPropertyDescriptor(source, k) || {value: source[k]};
if (d.get) {
target.__defineGetter__(k, d.get);
if (d.set) {
target.__defineSetter__(k, d.set);
}
}
else {
// Prevent never-ending loop
if (target === d.value) {
continue;
}
if (deep && d.value && typeof d.value === "object") {
target[k] = process.mixin(deep,
// Never move original objects, clone them
source[k] || (d.value.length != null ? [] : {})
, d.value);
}
else {
target[k] = d.value;
}
}
});
}
}
// Return the modified object
return target;
};
// Event
var eventsModule = createInternalModule('events', function (exports) {
exports.EventEmitter = process.EventEmitter;
// 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];
};
exports.Promise = removed('Promise has been removed. See http://groups.google.com/group/nodejs/msg/0c483b891c56fea2 for more information.');
process.Promise = exports.Promise;
});
var events = eventsModule.exports;
// nextTick()
var nextTickQueue = [];
var nextTickWatcher = new process.IdleWatcher();
// Only debugger has maximum priority. Below that is the nextTickWatcher.
nextTickWatcher.setPriority(process.EVMAXPRI-1);
nextTickWatcher.callback = function () {
var l = nextTickQueue.length;
while (l--) {
var cb = nextTickQueue.shift();
cb();
}
if (nextTickQueue.length == 0) nextTickWatcher.stop();
};
process.nextTick = function (callback) {
nextTickQueue.push(callback);
nextTickWatcher.start();
};
// 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);
});
}
});
// Timers
function addTimerListener (callback) {
var timer = this;
// Special case the no param case to avoid the extra object creation.
if (arguments.length > 2) {
var args = Array.prototype.slice.call(arguments, 2);
timer.addListener("timeout", function(){
callback.apply(timer, args);
});
} else {
timer.addListener("timeout", callback);
}
}
GLOBAL.setTimeout = function (callback, after) {
var timer = new process.Timer();
addTimerListener.apply(timer, arguments);
timer.start(after, 0);
return timer;
};
GLOBAL.setInterval = function (callback, repeat) {
var timer = new process.Timer();
addTimerListener.apply(timer, arguments);
timer.start(repeat, repeat);
return timer;
};
GLOBAL.clearTimeout = function (timer) {
if (timer instanceof process.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");
}
}
function readAll (fd, pos, content, encoding, callback) {
process.fs.read(fd, 4*1024, pos, encoding, function (err, chunk, bytesRead) {
if (err) {
if (callback) callback(err);
} else if (chunk) {
content += chunk;
pos += bytesRead;
readAll(fd, pos, content, encoding, callback);
} else {
process.fs.close(fd, function (err) {
if (callback) callback(err, content);
});
}
});
}
process.fs.readFile = function (path, encoding_, callback) {
var encoding = typeof(encoding_) == 'string' ? encoding : 'utf8';
var callback_ = arguments[arguments.length - 1];
var callback = (typeof(callback_) == 'function' ? callback_ : null);
process.fs.open(path, process.O_RDONLY, 0666, function (err, fd) {
if (err) {
if (callback) callback(err);
} else {
readAll(fd, 0, "", encoding, callback);
}
});
};
process.fs.readFileSync = function (path, encoding) {
encoding = encoding || "utf8"; // default to utf8
debug('readFileSync open');
var fd = process.fs.open(path, process.O_RDONLY, 0666);
var content = '';
var pos = 0;
var r;
while ((r = process.fs.read(fd, 4*1024, pos, encoding)) && r[0]) {
debug('readFileSync read ' + r[1]);
content += r[0];
pos += r[1]
}
debug('readFileSync close');
process.fs.close(fd);
debug('readFileSync done');
return content;
};
var pathModule = createInternalModule("path", function (exports) {
exports.join = function () {
return exports.normalize(Array.prototype.join.call(arguments, "/"));
};
exports.normalizeArray = function (parts, keepBlanks) {
var directories = [], prev;
for (var i = 0, l = parts.length - 1; i <= l; i++) {
var directory = parts[i];
// if it's blank, but it's not the first thing, and not the last thing, skip it.
if (directory === "" && i !== 0 && i !== l && !keepBlanks) continue;
// if it's a dot, and there was some previous dir already, then skip it.
if (directory === "." && prev !== undefined) continue;
if (
directory === ".."
&& directories.length
&& prev !== ".."
&& prev !== undefined
&& (prev !== "" || keepBlanks)
) {
directories.pop();
prev = directories.slice(-1)[0]
} else {
if (prev === ".") directories.pop();
directories.push(directory);
prev = directory;
}
}
return directories;
};
exports.normalize = function (path, keepBlanks) {
return exports.normalizeArray(path.split("/"), keepBlanks).join("/");
};
exports.dirname = function (path) {
return path.substr(0, path.lastIndexOf("/")) || ".";
};
exports.filename = function () {
throw new Error("path.filename is deprecated. Please use path.basename instead.");
};
exports.basename = function (path, ext) {
var f = path.substr(path.lastIndexOf("/") + 1);
if (ext && f.substr(-1 * ext.length) === ext) {
f = f.substr(0, f.length - ext.length);
}
return f;
};
exports.extname = function (path) {
var index = path.lastIndexOf('.');
return index < 0 ? '' : path.substring(index);
};
exports.exists = function (path, callback) {
process.fs.stat(path, function (err, stats) {
if (callback) callback(err ? false : true);
});
};
});
var path = pathModule.exports;
function existsSync (path) {
try {
process.fs.stat(path);
return true;
} catch (e) {
return false;
}
}
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);
}
/* Sync unless callback given */
function findModulePath (id, dirs, callback) {
process.assert(dirs.constructor == Array);
if (/^https?:\/\//.exec(id)) {
if (callback) {
callback(id);
} else {
throw new Error("Sync http require not allowed.");
}
return;
}
if (/\.(js|node)$/.exec(id)) {
throw new Error("No longer accepting filename extension in module names");
}
if (dirs.length == 0) {
if (callback) {
callback();
} else {
return; // sync returns null
}
}
var dir = dirs[0];
var rest = dirs.slice(1, dirs.length);
if (id.charAt(0) == '/') {
dir = '';
rest = [];
}
var locations = [
path.join(dir, id + ".js"),
path.join(dir, id + ".node"),
path.join(dir, id, "index.js"),
path.join(dir, id, "index.addon")
];
function searchLocations () {
var location = locations.shift();
if (!location) {
return findModulePath(id, rest, callback);
}
// if async
if (callback) {
path.exists(location, function (found) {
if (found) {
callback(location);
} else {
return searchLocations();
}
})
// if sync
} else {
if (existsSync(location)) {
return location;
} else {
return searchLocations();
}
}
}
return searchLocations();
}
// sync - no i/o performed
function resolveModulePath(request, parent) {
var id, paths;
if (request.charAt(0) == "." && (request.charAt(1) == "/" || request.charAt(1) == ".")) {
// Relative request
var parentIdPath = path.dirname(parent.id +
(path.basename(parent.filename).match(/^index\.(js|addon)$/) ? "/" : ""));
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;
}
return [id, paths];
}
function loadModuleSync (request, parent) {
var resolvedModule = resolveModulePath(request, parent);
var id = resolvedModule[0];
var paths = resolvedModule[1];
debug("loadModuleSync REQUEST " + (request) + " parent: " + parent.id);
var cachedModule = internalModuleCache[id] || parent.moduleCache[id];
if (cachedModule) {
debug("found " + JSON.stringify(id) + " in cache");
return cachedModule.exports;
} else {
debug("looking for " + JSON.stringify(id) + " in " + JSON.stringify(paths));
var filename = findModulePath(request, paths);
if (!filename) {
throw new Error("Cannot find module '" + request + "'");
} else {
var module = new Module(id, parent);
module.loadSync(filename);
return module.exports;
}
}
}
function loadModule (request, parent, callback) {
var
resolvedModule = resolveModulePath(request, parent),
id = resolvedModule[0],
paths = resolvedModule[1];
debug("loadModule REQUEST " + (request) + " parent: " + parent.id);
var cachedModule = internalModuleCache[id] || parent.moduleCache[id];
if (cachedModule) {
debug("found " + JSON.stringify(id) + " in cache");
if (callback) callback(null, cachedModule.exports);
} else {
debug("looking for " + JSON.stringify(id) + " in " + JSON.stringify(paths));
// Not in cache
findModulePath(request, paths, function (filename) {
if (!filename) {
var err = new Error("Cannot find module '" + request + "'");
if (callback) callback(err);
} else {
var module = new Module(id, parent);
module.load(filename, callback);
}
});
}
};
Module.prototype.loadSync = function (filename) {
debug("loadSync " + JSON.stringify(filename) + " for module " + JSON.stringify(this.id));
process.assert(!this.loaded);
this.filename = filename;
if (filename.match(/\.node$/)) {
this._loadObjectSync(filename);
} else {
this._loadScriptSync(filename);
}
};
Module.prototype.load = function (filename, callback) {
debug("load " + JSON.stringify(filename) + " for module " + JSON.stringify(this.id));
process.assert(!this.loaded);
this.filename = filename;
if (filename.match(/\.node$/)) {
this._loadObject(filename, callback);
} else {
this._loadScript(filename, callback);
}
};
Module.prototype._loadObjectSync = function (filename) {
this.loaded = true;
process.dlopen(filename, this.exports);
};
Module.prototype._loadObject = function (filename, callback) {
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.
self.loaded = true;
process.dlopen(filename, self.exports); // FIXME synchronus
if (callback) callback(null, self.exports);
};
function cat (id, callback) {
if (id.match(/^http:\/\//)) {
loadModule('http', process.mainModule, function (err, http) {
if (err) {
if (callback) callback(err);
} else {
http.cat(id, callback);
}
});
} else {
process.fs.readFile(id, callback);
}
}
Module.prototype._loadContent = function (content, filename) {
var self = this;
// remove shebang
content = content.replace(/^\#\!.*/, '');
function requireAsync (url, cb) {
loadModule(url, self, cb);
}
function require (path) {
return loadModuleSync(path, self);
}
require.paths = process.paths;
require.async = requireAsync;
require.main = process.mainModule;
// create wrapper function
var wrapper = "(function (exports, require, module, __filename, __dirname) { "
+ content
+ "\n});";
try {
var compiledWrapper = process.compile(wrapper, filename);
var dirName = path.dirname(filename);
if (filename === process.argv[1])
process.checkBreak();
compiledWrapper.apply(self.exports, [self.exports, require, self, filename, dirName]);
} catch (e) {
return e;
}
};
Module.prototype._loadScriptSync = function (filename) {
var content = process.fs.readFileSync(filename);
// remove shebang
content = content.replace(/^\#\!.*/, '');
var e = this._loadContent(content, filename);
if (e) {
throw e;
} else {
this.loaded = true;
}
};
Module.prototype._loadScript = function (filename, callback) {
var self = this;
cat(filename, function (err, content) {
debug('cat done');
if (err) {
if (callback) callback(err);
} else {
var e = self._loadContent(content, filename);
if (e) {
if (callback) callback(e);
} else {
self._waitChildrenLoad(function () {
self.loaded = true;
if (self.onload) self.onload();
if (callback) callback(null, 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.onload = function () {
child.onload = null;
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 = new Module(".");
process.mainModule.load(process.argv[1], function (err) {
if (err) throw err;
});
// 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");
})