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node.js
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681 lines (546 loc) · 17.1 KB
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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.inherits = function () {
throw new Error("process.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.fs.cat = function (path, encoding) {
var promise = new process.Promise();
encoding = encoding || "utf8"; // default to utf8
process.fs.open(path, process.O_RDONLY, 0666).addCallback(function (fd) {
var content = "", pos = 0;
function readChunk () {
process.fs.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);
process.fs.close(fd);
}
}).addErrback(function () {
promise.emitError();
});
}
readChunk();
}).addErrback(function () {
promise.emitError(new Error("Could not open " + path));
});
return promise;
};
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
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" && !process.isFunction(target) )
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" && !copy.nodeType )
target[ name ] = process.mixin( deep,
// Never move original objects, clone them
src || ( copy.length != null ? [ ] : { } )
, copy );
// Don't bring in undefined values
else if ( copy !== undefined )
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.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() {
this._events['success'] = [];
this._events['error'] = [];
this.emitCancel();
};
process.Promise.prototype.emitCancel = function() {
var args = Array.prototype.slice.call(arguments);
args.unshift('cancel');
this.emit.apply(this, args);
};
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;
};
process.Promise.prototype.wait = function () {
var ret;
var had_error = false;
this.addCallback(function () {
if (arguments.length == 1) {
ret = arguments[0];
} else if (arguments.length > 1) {
ret = [];
for (var i = 0; i < arguments.length; i++) {
ret.push(arguments[i]);
}
}
})
.addErrback(function (arg) {
had_error = true;
ret = arg;
})
.block();
if (had_error) {
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);
});
}
});
// 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 pathModule = createInternalModule("path", function (exports) {
exports.join = function () {
var joined = "";
for (var i = 0; i < arguments.length; i++) {
var part = arguments[i].toString();
/* Some logic to shorten paths */
if (part === ".") continue;
while (/^\.\//.exec(part)) part = part.replace(/^\.\//, "");
if (i === 0) {
part = part.replace(/\/*$/, "/");
} else if (i === arguments.length - 1) {
part = part.replace(/^\/*/, "");
} else {
part = part.replace(/^\/*/, "").replace(/\/*$/, "/");
}
joined += part;
}
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 = process.fs.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 " + JSON.stringify(request) + " parent: " + JSON.stringify(parent));
var id, paths;
if (request.charAt(0) == "." && (request.charAt(1) == "/" || request.charAt(1) == ".")) {
// Relative request
id = path.join(path.dirname(parent.id), request);
paths = [path.dirname(parent.filename)];
} else {
id = request;
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;
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 = process.fs.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);
compiledWrapper.apply(self.exports, [self.exports, require, self, filename]);
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].charAt(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);
}()); // end annonymous namespace