Long live Qt 4.5!

2 files changed, 235 insertions, 0 deletions

diff --git a/examples/script/qscript/main.cpp b/examples/script/qscript/main.cpp
new file mode 100644
index 0000000..891c89f
--- /dev/null
+++ b/examples/script/qscript/main.cpp
@@ -0,0 +1,221 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <qscriptengine.h>
+
+#include <QtCore/QFile>
+#include <QtCore/QTextStream>
+#include <QtCore/QStringList>
+#include <QtGui/QApplication>
+
+#include <stdlib.h>
+
+#include "bytearrayclass.h"
+
+static bool wantsToQuit;
+
+static QScriptValue qtscript_quit(QScriptContext *ctx, QScriptEngine *eng)
+{
+    Q_UNUSED(ctx);
+    wantsToQuit = true;
+    return eng->undefinedValue();
+}
+
+static void interactive(QScriptEngine *eng)
+{
+    QScriptValue global = eng->globalObject();
+    QScriptValue quitFunction = eng->newFunction(qtscript_quit);
+    if (!global.property(QLatin1String("exit")).isValid())
+        global.setProperty(QLatin1String("exit"), quitFunction);
+    if (!global.property(QLatin1String("quit")).isValid())
+        global.setProperty(QLatin1String("quit"), quitFunction);
+    wantsToQuit = false;
+
+    QTextStream qin(stdin, QFile::ReadOnly);
+
+    const char *qscript_prompt = "qs> ";
+    const char *dot_prompt = ".... ";
+    const char *prompt = qscript_prompt;
+
+    QString code;
+
+    forever {
+        QString line;
+
+        printf("%s", prompt);
+        fflush(stdout);
+
+        line = qin.readLine();
+        if (line.isNull())
+            break;
+
+        code += line;
+        code += QLatin1Char('\n');
+
+        if (line.trimmed().isEmpty()) {
+            continue;
+
+        } else if (! eng->canEvaluate(code)) {
+            prompt = dot_prompt;
+
+        } else {
+            QScriptValue result = eng->evaluate(code, QLatin1String("typein"));
+
+            code.clear();
+            prompt = qscript_prompt;
+
+            if (! result.isUndefined())
+                fprintf(stderr, "%s\n", qPrintable(result.toString()));
+
+            if (wantsToQuit)
+                break;
+        }
+    }
+}
+
+static QScriptValue importExtension(QScriptContext *context, QScriptEngine *engine)
+{
+    return engine->importExtension(context->argument(0).toString());
+}
+
+static QScriptValue loadScripts(QScriptContext *context, QScriptEngine *engine)
+{
+    for (int i = 0; i < context->argumentCount(); ++i) {
+        QString fileName = context->argument(0).toString();
+        QFile file(fileName);
+        if (!file.open(QIODevice::ReadOnly))
+            return context->throwError(QString::fromLatin1("could not open %0 for reading").arg(fileName));
+        QTextStream ts(&file);
+        QString contents = ts.readAll();
+        file.close();
+        QScriptContext *pc = context->parentContext();
+        context->setActivationObject(pc->activationObject());
+        context->setThisObject(pc->thisObject());
+        QScriptValue ret = engine->evaluate(contents);
+        if (engine->hasUncaughtException())
+            return ret;
+    }
+    return engine->undefinedValue();
+}
+
+int main(int argc, char *argv[])
+{
+    QApplication *app;
+    if (argc >= 2 && !qstrcmp(argv[1], "-tty")) {
+        ++argv;
+       --argc;
+        app = new QApplication(argc, argv, QApplication::Tty);
+    } else {
+        app = new QApplication(argc, argv);
+    }
+
+    QScriptEngine *eng = new QScriptEngine();
+
+    QScriptValue globalObject = eng->globalObject();
+
+    globalObject.setProperty("load", eng->newFunction(loadScripts, /*length=*/1));
+
+    {
+        if (!globalObject.property("qt").isObject())
+            globalObject.setProperty("qt", eng->newObject());            
+        QScriptValue qscript = eng->newObject();
+        qscript.setProperty("importExtension", eng->newFunction(importExtension));
+        globalObject.property("qt").setProperty("script", qscript);
+    }
+
+    ByteArrayClass *byteArrayClass = new ByteArrayClass(eng);
+    globalObject.setProperty("ByteArray", byteArrayClass->constructor());
+
+    if (! *++argv) {
+        interactive(eng);
+        return EXIT_SUCCESS;
+    }
+
+    while (const char *arg = *argv++) {
+        QString fn = QString::fromLocal8Bit(arg);
+
+        if (fn == QLatin1String("-i")) {
+            interactive(eng);
+            break;
+        }
+
+        QString contents;
+        int lineNumber = 1;
+
+        if (fn == QLatin1String("-")) {
+            QTextStream stream(stdin, QFile::ReadOnly);
+            contents = stream.readAll();
+        }
+
+        else {
+            QFile file(fn);
+
+            if (file.open(QFile::ReadOnly)) {
+                QTextStream stream(&file);
+                contents = stream.readAll();
+                file.close();
+
+                // strip off #!/usr/bin/env qscript line
+                if (contents.startsWith("#!")) {
+                    contents.remove(0, contents.indexOf("\n"));
+                    ++lineNumber;
+                }
+            }
+        }
+
+        if (contents.isEmpty())
+            continue;
+
+        QScriptValue r = eng->evaluate(contents, fn, lineNumber);
+        if (eng->hasUncaughtException()) {
+            QStringList backtrace = eng->uncaughtExceptionBacktrace();
+            fprintf (stderr, "    %s\n%s\n\n", qPrintable(r.toString()),
+                     qPrintable(backtrace.join("\n")));
+            return EXIT_FAILURE;
+        }
+    }
+
+    delete eng;
+    delete app;
+
+    return EXIT_SUCCESS;
+}
diff --git a/examples/script/qscript/qscript.pro b/examples/script/qscript/qscript.pro
new file mode 100644
index 0000000..759eedf
--- /dev/null
+++ b/examples/script/qscript/qscript.pro
@@ -0,0 +1,14 @@
+
+QT += script
+win32: CONFIG += console
+mac:CONFIG -= app_bundle
+
+SOURCES += main.cpp
+
+include(../customclass/bytearrayclass.pri)
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/script/qscript
+sources.files = $$RESOURCES $$FORMS main.cpp qscript.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/script/qscript
+INSTALLS += target sources