/****************************************************************************

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** This file is part of the test suite of the Qt Toolkit.

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** General Public License version 2.1 as published by the Free Software

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** packaging of this file.  Please review the following information to

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** $QT_END_LICENSE$

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****************************************************************************/

#include <qscriptengine.h>

#include <QtCore/QFile>

#include <QtCore/QTextStream>

#include <QTest>

#include <qstringlist.h>

#include <stdlib.h>

#include <qsharedmemory.h>

#include <qsystemsemaphore.h>

#include <qsystemlock.h>

class ScriptSystemSemaphore : public QObject

{

    Q_OBJECT

public:

    ScriptSystemSemaphore(QObject *parent = 0) : QObject(parent), ss(QString())

    {

    }

public slots:

    bool acquire()

    {

        return ss.acquire();

    };

    bool release(int n = 1)

    {

        return ss.release(n);

    };

    void setKey(const QString &key, int n = 0)

    {

        ss.setKey(key, n);

    };

    QString key() const

    {

        return ss.key();

    }

private:

    QSystemSemaphore ss;

};

class ScriptSystemLock : public QObject

{

    Q_OBJECT

    Q_PROPERTY(QString key WRITE setKey READ key)

public:

    ScriptSystemLock(QObject *parent = 0) : QObject(parent), sl(QString())

    {

    }

public slots:

    bool lockReadOnly()

    {

        return sl.lock(QSystemLock::ReadOnly);

    }

    bool lock()

    {

        return sl.lock();

    };

    bool unlock()

    {

        return sl.unlock();

    };

    void setKey(const QString &key)

    {

        sl.setKey(key);

    };

    QString key() const

    {

        return sl.key();

    }

private:

    QSystemLock sl;

};

class ScriptSharedMemory : public QObject

{

    Q_OBJECT

    Q_PROPERTY(bool attached READ isAttached)

    Q_PROPERTY(QString key WRITE setKey READ key)

public:

    enum SharedMemoryError

    {

        NoError = 0,

        PermissionDenied = 1,

        InvalidSize = 2,

        KeyError = 3,

        AlreadyExists = 4,

        NotFound = 5,

        LockError = 6,

        OutOfResources = 7,

        UnknownError = 8

    };

    ScriptSharedMemory(QObject *parent = 0) : QObject(parent)

    {

    }

public slots:

    void sleep(int x) const

    {

        QTest::qSleep(x);

    }

    bool create(int size)

    {

        return sm.create(size);

    };

    bool createReadOnly(int size)

    {

        return sm.create(size, QSharedMemory::ReadOnly);

    };

    int size() const

    {

        return sm.size();

    };

    bool attach()

    {

        return sm.attach();

    };

    bool attachReadOnly()

    {

        return sm.attach(QSharedMemory::ReadOnly);

    };

    bool isAttached() const

    {

        return sm.isAttached();

    };

    bool detach()

    {

        return sm.detach();

    };

    int error() const

    {

        return (int)sm.error();

    };

    QString errorString() const

    {

        return sm.errorString();

    };

    void set(int i, QChar value)

    {

        ((char*)sm.data())[i] = value.toLatin1();

    }

    QString get(int i)

    {

        return QChar::fromLatin1(((char*)sm.data())[i]);

    }

    char *data() const

    {

        return (char*)sm.data();

    };

    void setKey(const QString &key)

    {

        sm.setKey(key);

    };

    QString key() const

    {

        return sm.key();

    }

    bool lock()

    {

        return sm.lock();

    }

    bool unlock()

    {

        return sm.unlock();

    }

private:

    QSharedMemory sm;

};

QT_BEGIN_NAMESPACE

Q_SCRIPT_DECLARE_QMETAOBJECT(ScriptSharedMemory, QObject*);

Q_SCRIPT_DECLARE_QMETAOBJECT(ScriptSystemLock, QObject*);

Q_SCRIPT_DECLARE_QMETAOBJECT(ScriptSystemSemaphore, QObject*);

QT_END_NAMESPACE

static void interactive(QScriptEngine &eng)

{

#ifdef Q_OS_WINCE

    fprintf(stderr, "Interactive mode not supported on Windows CE\n");

    return;

#endif

    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);

            code.clear();

            prompt = qscript_prompt;

            if (!result.isUndefined())

                fprintf(stderr, "%s\n", qPrintable(result.toString()));

        }

    }

}

int main(int argc, char *argv[])

{

    QCoreApplication app(argc, argv);

    QScriptEngine eng;

    QScriptValue globalObject = eng.globalObject();

    QScriptValue sm = qScriptValueFromQMetaObject<ScriptSharedMemory>(&eng);

    eng.globalObject().setProperty("ScriptSharedMemory", sm);

    QScriptValue sl = qScriptValueFromQMetaObject<ScriptSystemLock>(&eng);

    eng.globalObject().setProperty("ScriptSystemLock", sl);

    QScriptValue ss = qScriptValueFromQMetaObject<ScriptSystemSemaphore>(&eng);

    eng.globalObject().setProperty("ScriptSystemSemaphore", ss);

    if (! *++argv) {

        interactive(eng);

        return EXIT_SUCCESS;

    }

    QStringList arguments = app.arguments();

    arguments.takeFirst();

    while (!arguments.isEmpty()) {

        QString fn = arguments.takeFirst();

        if (fn == QLatin1String("-i")) {

            interactive(eng);

            break;

        }

        QString contents;

        if (fn == QLatin1String("-")) {

            QTextStream stream(stdin, QFile::ReadOnly);

            contents = stream.readAll();

        } else {

            QFile file(fn);

	    if (!file.exists()) {

                fprintf(stderr, "%s doesn't exists\n", qPrintable(fn));

	        return EXIT_FAILURE;

	    }

            if (file.open(QFile::ReadOnly)) {

                QTextStream stream(&file);

                contents = stream.readAll();

                file.close();

            }

        }

        if (contents.isEmpty())

            continue;

        if (contents[0] == '#') {

            contents.prepend("//");

            QScriptValue args = eng.newArray();

            args.setProperty("0", QScriptValue(&eng, fn));

            int i = 1;

            while (!arguments.isEmpty())

                args.setProperty(i++, QScriptValue(&eng, arguments.takeFirst()));

            eng.currentContext()->activationObject().setProperty("args", args);

        }

        QScriptValue r = eng.evaluate(contents);

        if (eng.hasUncaughtException()) {

            int line = eng.uncaughtExceptionLineNumber();

            fprintf(stderr, "%d: %s\n\t%s\n\n", line, qPrintable(fn), qPrintable(r.toString()));

            return EXIT_FAILURE;

        }

        if (r.isNumber())

            return r.toInt32();

    }

    return EXIT_SUCCESS;

}

#include "main.moc"