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<pre><span class="comment"> /****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
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** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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 1.1, 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.
**
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#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, <span class="comment">/*length=*/</span>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();
<span class="comment">// strip off #</span>!/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;
}</pre>
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