Implement the plumbing for CommonJS System module support.

See http://wiki.commonjs.org/wiki/System.

Based on the initial work from execjosh:
#192

http://code.google.com/p/phantomjs/issues/detail?id=270

src/bootstrap.js

@@ -37,12 +37,14 @@ function require(name) {
 
     var code, func, exports;
 
-    if (name === 'webpage' || name === 'fs' || name === 'webserver') {
+    if (name === 'webpage' || name === 'fs' || name === 'webserver' | name === 'system') {
         code = phantom.loadModuleSource(name);
         func = new Function("exports", "window", code);
         exports = {};
         if (name === 'fs') {
             exports = phantom.createFilesystem();
+        } else if (name === 'system') {
+            exports = phantom.createSystem();
         }
         func.call({}, exports, {});
         return exports;

src/modules/system.js

@@ -0,0 +1,6 @@
+/*
+ * CommonJS System/1.0
+ * Spec: http://wiki.commonjs.org/wiki/System/1.0
+ */
+
+exports.platform = 'phantomjs';

src/phantom.cpp

@@ -42,6 +42,7 @@
 #include "webpage.h"
 #include "webserver.h"
 #include "repl.h"
+#include "system.h"
 
 
 // public:
@@ -50,6 +51,7 @@ Phantom::Phantom(QObject *parent)
     , m_terminated(false)
     , m_returnValue(0)
     , m_filesystem(0)
+    , m_system(0)
 {
     // second argument: script name
     QStringList args = QApplication::arguments();
@@ -239,6 +241,14 @@ QObject *Phantom::createFilesystem()
     return m_filesystem;
 }
 
+QObject *Phantom::createSystem()
+{
+    if (!m_system)
+        m_system = new System(this);
+
+    return m_system;
+}
+
 QString Phantom::loadModuleSource(const QString &name)
 {
     QString moduleSource;

src/phantom.h

@@ -38,6 +38,7 @@
 #include "encoding.h"
 #include "config.h"
 #include "replcompletable.h"
+#include "system.h"
 
 class WebPage;
 class WebServer;
@@ -77,6 +78,7 @@ public slots:
     QObject *createWebPage();
     QObject *createWebServer();
     QObject *createFilesystem();
+    QObject *createSystem();
     QString loadModuleSource(const QString &name);
     bool injectJs(const QString &jsFilePath);
 
@@ -102,6 +104,7 @@ private slots:
     QString m_script;
     QVariantMap m_defaultPageSettings;
     FileSystem *m_filesystem;
+    System *m_system;
     QList<QPointer<WebPage> > m_pages;
     QList<QPointer<WebServer> > m_servers;
     Config m_config;

src/phantomjs.pro

@@ -19,6 +19,7 @@ HEADERS += csconverter.h \
     networkaccessmanager.h \
     cookiejar.h \
     filesystem.h \
+    system.h \
     terminal.h \
     encoding.h \
     config.h \
@@ -34,6 +35,7 @@ SOURCES += phantom.cpp \
     networkaccessmanager.cpp \
     cookiejar.cpp \
     filesystem.cpp \
+    system.cpp \
     terminal.cpp \
     encoding.cpp \
     config.cpp \

src/phantomjs.qrc

@@ -9,6 +9,7 @@
         <file>modules/webpage.js</file>
         <file>modules/webserver.js</file>
         <file>modules/fs.js</file>
+        <file>modules/system.js</file>
         <file>repl.js</file>
     </qresource>
 </RCC>

src/system.cpp

@@ -0,0 +1,40 @@
+/*
+  This file is part of the PhantomJS project from Ofi Labs.
+
+  Copyright (C) 2012 execjosh, http://execjosh.blogspot.com
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the <organization> nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include "system.h"
+
+System::System(QObject *parent) :
+    REPLCompletable(parent)
+{
+}
+
+void System::initCompletions()
+{
+    addCompletion("platform");
+}

src/system.h

@@ -0,0 +1,53 @@
+/*
+  This file is part of the PhantomJS project from Ofi Labs.
+
+  Copyright (C) 2012 execjosh, http://execjosh.blogspot.com
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the <organization> nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef SYSTEM_H
+#define SYSTEM_H
+
+#include <QObject>
+#include <QStringList>
+#include <QVariantMap>
+#include <QTextStream>
+
+#include "replcompletable.h"
+
+// This class implements the CommonJS System/1.0 spec.
+// See: http://wiki.commonjs.org/wiki/System/1.0
+class System : public REPLCompletable
+{
+    Q_OBJECT
+
+public:
+    explicit System(QObject *parent = 0);
+
+private:
+    virtual void initCompletions();
+};
+
+#endif // SYSTEM_H

test/run-tests.js

@@ -63,6 +63,7 @@ phantom.injectJs("./fs-spec-01.js"); //< Filesystem Specs 01 (Basic)
 phantom.injectJs("./fs-spec-02.js"); //< Filesystem Specs 02 (Attributes)
 phantom.injectJs("./fs-spec-03.js"); //< Filesystem Specs 03 (Paths)
 phantom.injectJs("./fs-spec-04.js"); //< Filesystem Specs 04 (Tests)
+phantom.injectJs("./system-spec.js");
 
 // Launch tests
 var jasmineEnv = jasmine.getEnv();

test/system-spec.js

@@ -0,0 +1,16 @@
+describe("System object", function() {
+    var system = require('system');
+
+    it("should exist", function() {
+        expect(typeof system).toEqual('object');
+        expect(system).toNotEqual(null);
+    });
+
+    it("should have platform as string", function() {
+        expect(typeof system.platform).toEqual('string');
+    });
+
+    it("should have platform set to 'phantomjs'", function() {
+        expect(system.platform).toEqual('phantomjs');
+    });
+});