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/****************************************************************************
**
** Copyright (C) 2007-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the QtScript project on Trolltech Labs.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 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 GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#include <QtScript>
#include <QtCore/QFile>
#include <QtCore/QTextStream>
#include <QtCore/QStringList>
#include <QtCore/QCoreApplication>
#include <QtCore/QSet>
#include <QtDebug>
namespace {
void printUsage()
{
QFile info(QCoreApplication::applicationDirPath()+"/README.TXT");
if (!info.exists() || !info.open(QFile::ReadOnly)) {
qDebug() << "Can't read README.TXT";
} else {
QTextStream stream(&info);
qDebug() << stream.readAll();
info.close();
}
}
bool loadFile(QString fileName, QScriptEngine *engine)
{
// avoid loading files more than once
static QSet<QString> loadedFiles;
QFileInfo fileInfo(fileName);
QString absoluteFileName = fileInfo.absoluteFilePath();
QString absolutePath = fileInfo.absolutePath();
QString canonicalFileName = fileInfo.canonicalFilePath();
if (loadedFiles.contains(canonicalFileName)) {
return true;
}
loadedFiles.insert(canonicalFileName);
QString path = fileInfo.path();
// load the file
QFile file(fileName);
if (file.open(QFile::ReadOnly)) {
QTextStream stream(&file);
QString contents = stream.readAll();
file.close();
int endlineIndex = contents.indexOf('\n');
QString line = contents.left(endlineIndex);
int lineNumber = 1;
// strip off #!/usr/bin/env qscript line
if (line.startsWith("#!")) {
contents.remove(0, endlineIndex+1);
++lineNumber;
}
// set qt.script.absoluteFilePath
QScriptValue script = engine->globalObject().property("qs").property("script");
QScriptValue oldFilePathValue = script.property("absoluteFilePath");
QScriptValue oldPathValue = script.property("absolutePath");
script.setProperty("absoluteFilePath", engine->toScriptValue(absoluteFileName));
script.setProperty("absolutePath", engine->toScriptValue(absolutePath));
QScriptValue r = engine->evaluate(contents, fileName, lineNumber);
if (engine->hasUncaughtException()) {
QStringList backtrace = engine->uncaughtExceptionBacktrace();
qDebug() << QString(" %1\n%2\n\n").arg(r.toString()).arg(backtrace.join("\n"));
return true;
}
script.setProperty("absoluteFilePath", oldFilePathValue); // if we come from includeScript(), or whereever
script.setProperty("absolutePath", oldPathValue); // if we come from includeScript(), or whereever
} else {
return false;
}
return true;
}
QScriptValue includeScript(QScriptContext *context, QScriptEngine *engine)
{
QString currentFileName = engine->globalObject().property("qs").property("script").property("absoluteFilePath").toString();
QFileInfo currentFileInfo(currentFileName);
QString path = currentFileInfo.path();
QString importFile = context->argument(0).toString();
QFileInfo importInfo(importFile);
if (importInfo.isRelative()) {
importFile = path + "/" + importInfo.filePath();
}
if (!loadFile(importFile, engine)) {
return context->throwError(QString("Failed to resolve include: %1").arg(importFile));
}
return engine->toScriptValue(true);
}
QScriptValue importExtension(QScriptContext *context, QScriptEngine *engine)
{
return engine->importExtension(context->argument(0).toString());
}
bool stopInteractiveMode;
QScriptValue exitInteractiveMode(QScriptContext *context, QScriptEngine *engine)
{
Q_UNUSED(context);
stopInteractiveMode = true;
return engine->undefinedValue();
}
void interactiveMode(QScriptEngine *engine)
{
engine->globalObject().setProperty("quit", engine->newFunction(exitInteractiveMode));
qDebug() << "Running in interactive mode. Press Ctrl+C or call quit() to stop.";
QTextStream input(stdin, QFile::ReadOnly);
const char *qtScriptPrompt = "qs> ";
const char *dotPrompt = ".... ";
const char *prompt = qtScriptPrompt;
QString code;
stopInteractiveMode = false;
while (!stopInteractiveMode) {
QString line;
printf("%s", prompt);
fflush(stdout);
line = input.readLine();
if (line.isNull())
break;
code += line;
code += QLatin1Char('\n');
if (line.trimmed().isEmpty()) {
continue;
} else if (!engine->canEvaluate(code)) {
prompt = dotPrompt;
} else {
QScriptValue result = engine->evaluate(code, QLatin1String("stdin"));
code.clear();
prompt = qtScriptPrompt;
if (!result.isUndefined())
fprintf(stderr, "%s\n", qPrintable(result.toString()));
}
}
}
} // namespace
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
QStringList paths = QStringList() << QCoreApplication::applicationDirPath() + "/../../plugins";
app.setLibraryPaths(paths);
QScriptEngine *engine = new QScriptEngine();
QScriptValue global = engine->globalObject();
// add the qt object
global.setProperty("qs", engine->newObject());
// add a 'script' object
QScriptValue script = engine->newObject();
global.property("qs").setProperty("script", script);
// add a 'system' object
QScriptValue system = engine->newObject();
global.property("qs").setProperty("system", system);
// add os information to qt.system.os
#ifdef Q_OS_WIN32
QScriptValue osName = engine->toScriptValue(QString("windows"));
#elif defined(Q_OS_LINUX)
QScriptValue osName = engine->toScriptValue(QString("linux"));
#elif defined(Q_OS_MAC)
QScriptValue osName = engine->toScriptValue(QString("mac"));
#elif defined(Q_OS_UNIX)
QScriptValue osName = engine->toScriptValue(QString("unix"));
#endif
system.setProperty("os", osName);
// add environment variables to qt.system.env
QMap<QString,QVariant> envMap;
QStringList envList = QProcess::systemEnvironment();
foreach (const QString &entry, envList) {
QStringList keyVal = entry.split('=');
if (keyVal.size() == 1)
envMap.insert(keyVal.at(0), QString());
else
envMap.insert(keyVal.at(0), keyVal.at(1));
}
system.setProperty("env", engine->toScriptValue(envMap));
// add the include functionality to qt.script.include
script.setProperty("include", engine->newFunction(includeScript));
// add the importExtension functionality to qt.script.importExtension
script.setProperty("importExtension", engine->newFunction(importExtension));
QStringList args = QCoreApplication::arguments();
args.takeFirst();
if (args.isEmpty()) {
interactiveMode(engine);
} else if (args.size() == 1 &&
(args.at(0) == "-help" || args.at(0) == "--help" || args.at(0) == "-h" || args.at(0) == "/h")) {
printUsage();
} else { // read script file and execute
QStringList files;
bool singlefile = (args.at(0) != "-f");
if (singlefile) {
files << args.takeFirst();
// add arguments to qt.script.arguments
script.setProperty("args", engine->toScriptValue(args));
} else {
args.takeFirst();
files += args;
}
foreach (const QString &fileName, files) {
if (!loadFile(fileName, engine)) {
qDebug() << "Failed:" << fileName;
return EXIT_FAILURE;
}
}
}
delete engine;
return EXIT_SUCCESS;
}
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