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|
(function (process) {
global = this;
global.process = process;
global.global = global;
global.GLOBAL = global;
global.root = global;
/** deprecation errors ************************************************/
function removed (reason) {
return function () {
throw new Error(reason);
};
}
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()");
process.mixin = removed('process.mixin() has been removed.');
process.createChildProcess = removed("childProcess API has changed. See doc/api.txt.");
process.inherits = removed("process.inherits() has moved to sys.inherits.");
process._byteLength = removed("process._byteLength() has moved to Buffer.byteLength");
process.assert = function (x, msg) {
if (!x) throw new Error(msg || "assertion error");
};
var writeError = process.binding('stdio').writeError;
var evals = process.binding('evals');
// lazy loaded.
var constants;
function lazyConstants () {
if (!constants) constants = process.binding("constants");
return constants;
}
// nextTick()
var nextTickQueue = [];
process._tickCallback = function () {
var l = nextTickQueue.length;
if (l === 0) return;
try {
for (var i = 0; i < l; i++) {
nextTickQueue[i]();
}
}
catch(e) {
nextTickQueue.splice(0, i+1);
if (i+1 < l) {
process._needTickCallback();
}
throw e; // process.nextTick error, or 'error' event on first tick
}
nextTickQueue.splice(0, l);
};
process.nextTick = function (callback) {
nextTickQueue.push(callback);
process._needTickCallback();
};
var internalModuleCache = {};
// This contains the source code for the files in lib/
// Like, natives.fs is the contents of lib/fs.js
var natives = process.binding('natives');
// Native modules don't need a full require function. So we can bootstrap
// most of the system with this mini-require.
function requireNative (id) {
if (internalModuleCache[id]) return internalModuleCache[id].exports;
if (!natives[id]) throw new Error('No such native module ' + id);
var fn = evals.Script.runInThisContext(
"(function (module, exports, require) {" + natives[id] + "\n})",
id + '.js');
var m = {id: id, exports: {}};
fn(m, m.exports, requireNative);
m.loaded = true;
internalModuleCache[id] = m;
return m.exports;
}
// Module System
var module = (function () {
var exports = {};
// Set the environ variable NODE_MODULE_CONTEXTS=1 to make node load all
// modules in thier own context.
var contextLoad = false;
if (+process.env["NODE_MODULE_CONTEXTS"] > 0) contextLoad = true;
var moduleCache = {};
function Module (id, parent) {
this.id = id;
this.exports = {};
this.parent = parent;
this.filename = null;
this.loaded = false;
this.exited = false;
this.children = [];
};
// Modules
var debugLevel = parseInt(process.env["NODE_DEBUG"], 16);
function debug (x) {
if (debugLevel & 1) {
process.binding('stdio').writeError(x + "\n");
}
}
var path = requireNative('path');
var modulePaths = [path.join(process.execPath, "..", "..", "lib", "node")];
if (process.env["HOME"]) {
modulePaths.unshift(path.join(process.env["HOME"], ".node_libraries"));
modulePaths.unshift(path.join(process.env["HOME"], ".node_modules"));
}
if (process.env["NODE_PATH"]) {
modulePaths = process.env["NODE_PATH"].split(":").concat(modulePaths);
}
var extensions = {};
var registerExtension = removed('require.registerExtension() removed. Use require.extensions instead');
// Which files to traverse while finding id? Returns generator function.
function traverser (id, dirs) {
var head = [], inDir = [], dirs = dirs.slice(),
exts = Object.keys(extensions);
return function next () {
var result = head.shift();
if (result) { return result; }
var gen = inDir.shift();
if (gen) { head = gen(); return next(); }
var dir = dirs.shift();
if (dir !== undefined) {
function direct (ext) { return path.join(dir, id + ext); }
function index (ext) { return path.join(dir, id, 'index' + ext); }
inDir = [
function () { return exts.map(direct); },
function () { return exts.map(index); }
];
head = [path.join(dir, id)];
return next();
}
};
}
function findModulePath (request, paths) {
var nextLoc = traverser(request, request.charAt(0) === '/' ? [''] : paths);
var fs = requireNative('fs');
var location, stats;
while (location = nextLoc()) {
try { stats = fs.statSync(location); } catch(e) { continue; }
if (stats && !stats.isDirectory()) return location;
}
return false;
}
// sync - no i/o performed
function resolveModuleLookupPaths (request, parent) {
if (natives[request]) return [request, []];
var start = request.substring(0, 2);
if (start !== "./" && start !== "..") {
return [request, modulePaths];
}
// with --eval, parent.id is not set and parent.filename is null
if (!parent || !parent.id || !parent.filename) {
// make require('./path/to/foo') work - normally the path is taken
// from realpath(__filename) but with eval there is no filename
return [request, ['.'].concat(modulePaths)];
}
// Is the parent an index module?
// We can assume the parent has a valid extension,
// as it already has been accepted as a module.
var isIndex = /^index\.\w+?$/.test(path.basename(parent.filename)),
parentIdPath = isIndex ? parent.id : path.dirname(parent.id),
id = path.join(parentIdPath, request);
// make sure require('./path') and require('path') get distinct ids, even
// when called from the toplevel js file
if (parentIdPath === '.' && id.indexOf('/') === -1) {
id = './' + id;
}
debug("RELATIVE: requested:" + request + " set ID to: "+id+" from "+parent.id);
return [id, [path.dirname(parent.filename)]];
}
function loadModule (request, parent) {
debug("loadModule REQUEST " + (request) + " parent: " + parent.id);
var resolved = resolveModuleFilename(request, parent);
var id = resolved[0];
var filename = resolved[1];
// With natives id === request
// We deal with these first
if (natives[id]) {
// REPL is a special case, because it needs the real require.
if (id == 'repl') {
var replModule = new Module("repl");
replModule._compile(natives.repl, 'repl.js');
internalModuleCache.repl = replModule;
return replModule.exports;
}
debug('load native module ' + request);
return requireNative(id);
}
var cachedModule = moduleCache[filename];
if (cachedModule) return cachedModule.exports;
var module = new Module(id, parent);
moduleCache[filename] = module;
module.load(filename);
return module.exports;
};
function resolveModuleFilename (request, parent) {
if (natives[request]) return [request, request];
var resolvedModule = resolveModuleLookupPaths(request, parent),
id = resolvedModule[0],
paths = resolvedModule[1];
// look up the filename first, since that's the cache key.
debug("looking for " + JSON.stringify(id) + " in " + JSON.stringify(paths));
var filename = findModulePath(request, paths);
if (!filename) {
throw new Error("Cannot find module '" + request + "'");
}
return [id, filename];
}
Module.prototype.load = function (filename) {
debug("load " + JSON.stringify(filename) + " for module " + JSON.stringify(this.id));
process.assert(!this.loaded);
this.filename = filename;
var extension = path.extname(filename) || '.js';
if (!extensions[extension]) extension = '.js';
extensions[extension](this, filename);
this.loaded = true;
};
// Returns exception if any
Module.prototype._compile = function (content, filename) {
var self = this;
// remove shebang
content = content.replace(/^\#\!.*/, '');
function require (path) {
return loadModule(path, self);
}
require.resolve = function (request) {
return resolveModuleFilename(request, self)[1];
}
require.paths = modulePaths;
require.main = process.mainModule;
// Enable support to add extra extension types
require.extensions = extensions;
// TODO: Insert depreciation warning
require.registerExtension = registerExtension;
require.cache = moduleCache;
var dirname = path.dirname(filename);
if (contextLoad) {
if (self.id !== ".") {
debug('load submodule');
// not root module
var sandbox = {};
for (var k in global) {
sandbox[k] = global[k];
}
sandbox.require = require;
sandbox.exports = self.exports;
sandbox.__filename = filename;
sandbox.__dirname = dirname;
sandbox.module = self;
sandbox.global = sandbox;
sandbox.root = root;
return evals.Script.runInNewContext(content, sandbox, filename);
} else {
debug('load root module');
// root module
global.require = require;
global.exports = self.exports;
global.__filename = filename;
global.__dirname = dirname;
global.module = self;
return evals.Script.runInThisContext(content, filename);
}
} else {
// create wrapper function
var wrapper = "(function (exports, require, module, __filename, __dirname) { "
+ content
+ "\n});";
var compiledWrapper = evals.Script.runInThisContext(wrapper, filename);
if (filename === process.argv[1] && global.v8debug) {
global.v8debug.Debug.setBreakPoint(compiledWrapper, 0, 0);
}
return compiledWrapper.apply(self.exports, [self.exports, require, self, filename, dirname]);
}
};
// Native extension for .js
extensions['.js'] = function (module, filename) {
var content = requireNative('fs').readFileSync(filename, 'utf8');
module._compile(content, filename);
};
// Native extension for .node
extensions['.node'] = function (module, filename) {
process.dlopen(filename, module.exports);
};
// bootstrap main module.
exports.runMain = function () {
// Load the main module--the command line argument.
process.mainModule = new Module(".");
try {
process.mainModule.load(process.argv[1]);
} catch (e) {
if (e.errno == lazyConstants().ENOENT) {
console.error("Cannot load '%s'", process.argv[1]);
process.exit(1);
} else {
throw e;
}
}
};
// bootstrap repl
exports.requireRepl = function () { return loadModule("repl", "."); };
// export for --eval
exports.Module = Module;
return exports;
})();
// Load events module in order to access prototype elements on process like
// process.addListener.
var events = requireNative('events');
// Signal Handlers
(function() {
var signalWatchers = {};
var addListener = process.addListener;
var removeListener = process.removeListener;
function isSignal (event) {
return event.slice(0, 3) === 'SIG' && lazyConstants()[event];
}
// Wrap addListener for the special signal types
process.on = process.addListener = function (type, listener) {
var ret = addListener.apply(this, arguments);
if (isSignal(type)) {
if (!signalWatchers.hasOwnProperty(type)) {
var b = process.binding('signal_watcher');
var w = new b.SignalWatcher(lazyConstants()[type]);
w.callback = function () { process.emit(type); };
signalWatchers[type] = w;
w.start();
} else if (this.listeners(type).length === 1) {
signalWatchers[event].start();
}
}
return ret;
};
process.removeListener = function (type, listener) {
var ret = removeListener.apply(this, arguments);
if (isSignal(type)) {
process.assert(signalWatchers.hasOwnProperty(type));
if (this.listeners(type).length === 0) {
signalWatchers[type].stop();
}
}
return ret;
};
})();
global.setTimeout = function () {
var t = requireNative('timers');
return t.setTimeout.apply(this, arguments);
};
global.setInterval = function () {
var t = requireNative('timers');
return t.setInterval.apply(this, arguments);
};
global.clearTimeout = function () {
var t = requireNative('timers');
return t.clearTimeout.apply(this, arguments);
};
global.clearInterval = function () {
var t = requireNative('timers');
return t.clearInterval.apply(this, arguments);
};
var stdout;
process.__defineGetter__('stdout', function () {
if (stdout) return stdout;
var binding = process.binding('stdio'),
net = requireNative('net'),
fs = requireNative('fs'),
fd = binding.stdoutFD;
if (binding.isStdoutBlocking()) {
stdout = new fs.WriteStream(null, {fd: fd});
} else {
stdout = new net.Stream(fd);
// FIXME Should probably have an option in net.Stream to create a stream from
// an existing fd which is writable only. But for now we'll just add
// this hack and set the `readable` member to false.
// Test: ./node test/fixtures/echo.js < /etc/passwd
stdout.readable = false;
}
return stdout;
});
var stdin;
process.openStdin = function () {
if (stdin) return stdin;
var binding = process.binding('stdio'),
net = requireNative('net'),
fs = requireNative('fs'),
fd = binding.openStdin();
if (binding.isStdinBlocking()) {
stdin = new fs.ReadStream(null, {fd: fd});
} else {
stdin = new net.Stream(fd);
stdin.readable = true;
}
stdin.resume();
return stdin;
};
// console object
var formatRegExp = /%[sdj]/g;
function format (f) {
if (typeof f !== 'string') {
var objects = [], util = requireNative('util');
for (var i = 0; i < arguments.length; i++) {
objects.push(util.inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var str = String(f).replace(formatRegExp, function (x) {
switch (x) {
case '%s': return args[i++];
case '%d': return +args[i++];
case '%j': return JSON.stringify(args[i++]);
default:
return x;
}
});
for (var len = args.length; i < len; ++i) {
str += ' ' + args[i];
}
return str;
}
global.console = {};
global.console.log = function () {
process.stdout.write(format.apply(this, arguments) + '\n');
};
global.console.info = global.console.log;
global.console.warn = function () {
writeError(format.apply(this, arguments) + '\n');
};
global.console.error = global.console.warn;
global.console.dir = function(object){
var util = requireNative('util');
process.stdout.write(util.inspect(object) + '\n');
};
var times = {};
global.console.time = function(label){
times[label] = Date.now();
};
global.console.timeEnd = function(label){
var duration = Date.now() - times[label];
global.console.log('%s: %dms', label, duration);
};
global.console.trace = function(label){
// TODO probably can to do this better with V8's debug object once that is
// exposed.
var err = new Error;
err.name = 'Trace';
err.message = label || '';
Error.captureStackTrace(err, arguments.callee);
console.error(err.stack);
};
global.console.assert = function(expression){
if(!expression){
var arr = Array.prototype.slice.call(arguments, 1);
process.assert(false, format.apply(this, arr));
}
};
global.Buffer = requireNative('buffer').Buffer;
process.exit = function (code) {
process.emit("exit", code || 0);
process.reallyExit(code || 0);
};
process.kill = function (pid, sig) {
sig = sig || 'SIGTERM';
if (!lazyConstants()[sig]) throw new Error("Unknown signal: " + sig);
process._kill(pid, lazyConstants()[sig]);
};
var cwd = process.cwd();
var path = requireNative('path');
// 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]) {
// Load module
if (process.argv[1].charAt(0) != "/" && !(/^http:\/\//).exec(process.argv[1])) {
process.argv[1] = path.join(cwd, process.argv[1]);
}
// REMOVEME: nextTick should not be necessary. This hack to get
// test/simple/test-exception-handler2.js working.
process.nextTick(module.runMain);
} else if (process._eval) {
// -e, --eval
var rv = new module.Module()._compile('return eval(process._eval)', 'eval');
console.log(rv);
} else {
// REPL
module.requireRepl().start();
}
});
|