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qglobal.cpp

/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** 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.
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****************************************************************************/

#include "qplatformdefs.h"
#include "qstring.h"
#include "qvector.h"
#include "qlist.h"
#include "qthreadstorage.h"

#ifndef QT_NO_QOBJECT
#include <private/qthread_p.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <stdarg.h>
#include <errno.h>

#if defined(Q_CC_MSVC) && !defined(Q_OS_TEMP)
#include <crtdbg.h>
#endif

/*!
    \class QFlag
    \brief The QFlag class is a helper data type for QFlags.

    It is equivalent to a plain \c int, except with respect to
    function overloading and type conversions. You should never need
    to use this class in your applications.

    \sa QFlags
*/

/*!
    \fn QFlag::QFlag(int value)

    Constructs a QFlag object that stores the given \a value.
*/

/*!
    \fn QFlag::operator int() const

    Returns the value stored by the QFlag object.
*/

/*!
    \class QFlags
    \brief The QFlags class provides a type-safe way of storing
    OR-combinations of enum values.

    \mainclass
    \ingroup tools

    The QFlags<Enum> class is a template class, where Enum is an enum
    type. QFlags is used throughout Qt for storing combinations of
    enum values.

    The traditional C++ approach for storing OR-combinations of enum
    values is to use an \c int or \c uint variable. The inconvenience
    with this approach is that there's no type checking at all; any
    enum value can be OR'd with any other enum value and passed on to
    a function that takes an \c int or \c uint.

    Qt uses QFlags to provide type safety. For example, the
    Qt::Alignment type is simply a typedef for
    QFlags<Qt::AlignmentFlag>. QLabel::setAlignment() takes a
    Qt::Alignment parameter, which means that any combination of
    Qt::AlignmentFlag values is legal:

    \code
        label->setAlignment(Qt::AlignLeft | Qt::AlignTop);
    \endcode

    If you try to pass a value from another enum, the compiler will
    report an error.

    If you want to use QFlags for your own enum types, use
    the Q_DECLARE_FLAGS() and Q_DECLARE_OPERATORS_FOR_FLAGS().
    For example:

    \code
        class MyClass
        {
        public:
            enum Option {
                NoOptions = 0x0,
                ShowTabs = 0x1,
                ShowAll = 0x2,
                SqueezeBlank = 0x4
            };
            Q_DECLARE_FLAGS(Options, Option)
            ...
        };

        Q_DECLARE_OPERATORS_FOR_FLAGS(MyClass::Options)
    \endcode

    You can then use the \c MyClass::Options type to store
    combinations of \c MyClass::Option values.

    A sensible naming convension for enum types and associated QFlags
    types is to give a singular name to the enum type (e.g., \c
    Option) and a plural name to the QFlags type (e.g., \c Options).
    When a singular name is desired for the QFlags type (e.g., \c
    Alignment), you can use \c Flag as the suffix for the enum type
    (e.g., \c AlignmentFlag).

    \sa QFlag
*/

/*!
    \typedef QFlags::enum_type

    Typedef for the Enum template type.
*/

/*!
    \fn QFlags::QFlags(const QFlags &other)

    Constructs a copy of \a other.
*/

/*!
    \fn QFlags::QFlags(Enum flag)

    Constructs a QFlags object storing the given \a flag.
*/

/*!
    \fn QFlags::QFlags(Zero zero)

    Constructs a QFlags object with no flags set. \a zero must be a
    literal 0 value.
*/

/*!
    \fn QFlags::QFlags(QFlag value)

    Constructs a QFlags object initialized with the given integer \a
    value.

    The QFlag type is a helper type. By using it here instead of \c
    int, we effectively ensure that arbitrary enum values cannot be
    cast to a QFlags, whereas untyped enum values (i.e., \c int
    values) can.
*/

/*!
    \fn QFlags &QFlags::operator=(const QFlags &other)

    Assigns \a other to this object and returns a reference to this
    object.
*/

/*!
    \fn QFlags &QFlags::operator&=(int mask)

    Performs a bitwise AND operation with \a mask and stores the
    result in this QFlags object. Returns a reference to this object.

    \sa operator&(), operator|=(), operator^=()
*/

/*!
    \fn QFlags &QFlags::operator&=(uint mask)

    \overload
*/

/*!
    \fn QFlags &QFlags::operator|=(QFlags other)

    Performs a bitwise OR operation with \a other and stores the
    result in this QFlags object. Returns a reference to this object.

    \sa operator|(), operator&=(), operator^=()
*/

/*!
    \fn QFlags &QFlags::operator|=(Enum other)

    \overload
*/

/*!
    \fn QFlags &QFlags::operator^=(QFlags other)

    Performs a bitwise XOR operation with \a other and stores the
    result in this QFlags object. Returns a reference to this object.

    \sa operator^(), operator&=(), operator|=()
*/

/*!
    \fn QFlags &QFlags::operator^=(Enum other)

    \overload
*/

/*!
    \fn QFlags::operator int() const

    Returns the value stored in the QFlags object as an integer.
*/

/*!
    \fn QFlags QFlags::operator|(QFlags other) const

    Returns a QFlags object containing the result of the bitwise OR
    operation on this object and \a other.

    \sa operator|=(), operator^(), operator&(), operator~()
*/

/*!
    \fn QFlags QFlags::operator|(Enum other) const

    \overload
*/

/*!
    \fn QFlags QFlags::operator^(QFlags other) const

    Returns a QFlags object containing the result of the bitwise XOR
    operation on this object and \a other.

    \sa operator^=(), operator&(), operator|(), operator~()
*/

/*!
    \fn QFlags QFlags::operator^(Enum other) const

    \overload
*/

/*!
    \fn QFlags QFlags::operator&(int mask) const

    Returns a QFlags object containing the result of the bitwise AND
    operation on this object and \a mask.

    \sa operator&=(), operator|(), operator^(), operator~()
*/

/*!
    \fn QFlags QFlags::operator&(uint mask) const

    \overload
*/

/*!
    \fn QFlags QFlags::operator&(Enum mask) const

    \overload
*/

/*!
    \fn QFlags QFlags::operator~() const

    Returns a QFlags object that contains the bitwise negation of
    this object.

    \sa operator&(), operator|(), operator^()
*/

/*!
    \fn bool QFlags::operator!() const

    Returns true if no flag is set (i.e., if the value stored by the
    QFlags object is 0); otherwise returns false.
*/

/*!
    \fn bool QFlags::testFlag(Enum flag) const
    \since 4.2

    Returns true if the \a flag is set, otherwise false.
*/

/*!
    \macro Q_DECLARE_FLAGS(Flags, Enum)
    \relates QFlags

    The Q_DECLARE_FLAGS() macro expands to

    \code
        typedef QFlags<Enum> Flags;
    \endcode

    \a Enum is the name of an existing enum type, whereas \a Flags is
    the name of the QFlags<\e{Enum}> typedef.

    See the QFlags documentation for details.

    \sa Q_DECLARE_OPERATORS_FOR_FLAGS()
*/

/*!
    \macro Q_DECLARE_OPERATORS_FOR_FLAGS(Flags)
    \relates QFlags

    The Q_DECLARE_OPERATORS_FOR_FLAGS() macro declares global \c
    operator|() functions for \a Flags, which is of type QFlags<T>.

    See the QFlags documentation for details.

    \sa Q_DECLARE_FLAGS()
*/

/*!
    \headerfile <QtGlobal>
    \title Global Qt Declarations
    \ingroup architecture

    \brief The <QtGlobal> header provides basic declarations and
    is included by all other Qt headers.

    The declarations include \l {types}, \l functions and
    \l macros.

    The type definitions are partly convenience definitions for basic
    types (some of which guarantee certain bit-sizes on all platforms
    supported by Qt), partly types related to Qt message handling. The
    functions are related to generating messages, Qt version handling
    and comparing and adjusting object values. And finally, some of
    the declared macros enable programmers to add compiler or platform
    specific code to their applications, while others are convenience
    macros for larger operations.

    \section1 Types

    The header file declares several type definitions that guarantee a
    specified bit-size on all platforms supported by Qt for various
    basic types, for example \l qint8 which is a signed char
    guaranteed to be 8-bit on all platforms supported by Qt. The
    header file also declares the \l qlonglong type definition for \c
    {long long int } (\c __int64 on Windows).

    Several convenience type definitions are declared: \l qreal for \c
    double, \l uchar for \c unsigned char, \l uint for \c unsigned
    int, \l ulong for \c unsigned long and \l ushort for \c unsigned
    short.

    Finally, the QtMsgType definition identifies the various messages
    that can be generated and sent to a Qt message handler;
    QtMsgHandler is a type definition for a pointer to a function with
    the signature \c {void myMsgHandler(QtMsgType, const char *)}.

    \section1 Functions

    The <QtGlobal> header file contains several functions comparing
    and adjusting an object's value. These functions take a template
    type as argument: You can retrieve the absolute value of an object
    using the qAbs() function, and you can bound a given object's
    value by given minimum and maximum values using the qBound()
    function. You can retrieve the minimum and maximum of two given
    objects using qMin() and qMax() respectively. All these functions
    return a corresponding template type; the template types can be
    replaced by any other type. For example:

    \code
        int myValue = 10;
        int minValue = 2;
        int maxValue = 6;

        int boundedValue = qBound(minValue, myValue, maxValue);
        // boundedValue == 6
    \endcode

    <QtGlobal> also contains functions that generate messages from the
    given string argument: qCritical(), qDebug(), qFatal() and
    qWarning(). These functions call the message handler with the
    given message. For example:

    \code
        if (!driver()->isOpen() || driver()->isOpenError()) {
            qWarning("QSqlQuery::exec: database not open");
            return false;
        }
    \endcode

    The remaining functions are qRound() and qRound64(), which both
    accept a \l qreal value as their argument returning the value
    rounded up to the nearest integer and 64-bit integer respectively,
    the qInstallMsgHandler() function which installs the given
    QtMsgHandler, and the qVersion() function which returns the
    version number of Qt at run-time as a string.

    \section1 Macros

    The <QtGlobal> header file provides a range of macros (Q_CC_*)
    that are defined if the application is compiled using the
    specified platforms. For example, the Q_CC_SUN macro is defined if
    the application is compiled using Forte Developer, or Sun Studio
    C++.  The header file also declares a range of macros (Q_OS_*)
    that are defined for the specified platforms. For example,
    Q_OS_X11 which is defined for the X Window System.

    The purpose of these macros is to enable programmers to add
    compiler or platform specific code to their application.

    The remaining macros are convenience macros for larger operations:
    The QT_TRANSLATE_NOOP() and QT_TR_NOOP() macros provide the
    possibility of marking text for dynamic translation,
    i.e. translation without changing the stored source text. The
    Q_ASSERT() and Q_ASSERT_X() enables warning messages of various
    level of refinement. The Q_FOREACH() and foreach() macros
    implement Qt's foreach loop.

    The Q_INT64_C() and Q_UINT64_C() macros wrap signed and unsigned
    64-bit integer literals in a platform-independent way. The
    Q_CHECK_PTR() macro prints a warning containing the source code's
    file name and line number, saying that the program ran out of
    memory, if the pointer is 0. The qPrintable() macro represent an
    easy way of printing text.

    Finally, the QT_POINTER_SIZE macro expands to the size of a
    pointer in bytes, and the QT_VERSION and QT_VERSION_STR macros
    expand to a numeric value or a string, respectively, specifying
    Qt's version number, i.e the version the application is compiled
    against.

    \sa <QtAlgorithms>, QSysInfo
*/

/*!
    \typedef qreal
    \relates <QtGlobal>

    Typedef for \c double on all platforms except for those using CPUs with
    ARM architectures.
    On ARM-based platforms, \c qreal is a typedef for \c float for performance
    reasons.
*/

/*! \typedef uchar
    \relates <QtGlobal>

    Convenience typedef for \c{unsigned char}.
*/

/*!
    \fn qt_set_sequence_auto_mnemonic(bool on)
    \relates <QtGlobal>

    Enables automatic mnemonics on Mac if \a on is true; otherwise
    this feature is disabled.

    Note that this function is only available on Mac where mnemonics
    are disabled by default.

    \sa {QShortcut#mnemonic}{QShortcut}
*/

/*! \typedef ushort
    \relates <QtGlobal>

    Convenience typedef for \c{unsigned short}.
*/

/*! \typedef uint
    \relates <QtGlobal>

    Convenience typedef for \c{unsigned int}.
*/

/*! \typedef ulong
    \relates <QtGlobal>

    Convenience typedef for \c{unsigned long}.
*/

/*! \typedef qint8
    \relates <QtGlobal>

    Typedef for \c{signed char}. This type is guaranteed to be 8-bit
    on all platforms supported by Qt.
*/

/*!
    \typedef quint8
    \relates <QtGlobal>

    Typedef for \c{unsigned char}. This type is guaranteed to
    be 8-bit on all platforms supported by Qt.
*/

/*! \typedef qint16
    \relates <QtGlobal>

    Typedef for \c{signed short}. This type is guaranteed to be
    16-bit on all platforms supported by Qt.
*/

/*!
    \typedef quint16
    \relates <QtGlobal>

    Typedef for \c{unsigned short}. This type is guaranteed to
    be 16-bit on all platforms supported by Qt.
*/

/*! \typedef qint32
    \relates <QtGlobal>

    Typedef for \c{signed int}. This type is guaranteed to be 32-bit
    on all platforms supported by Qt.
*/

/*!
    \typedef quint32
    \relates <QtGlobal>

    Typedef for \c{unsigned int}. This type is guaranteed to
    be 32-bit on all platforms supported by Qt.
*/

/*! \typedef qint64
    \relates <QtGlobal>

    Typedef for \c{long long int} (\c __int64 on Windows). This type
    is guaranteed to be 64-bit on all platforms supported by Qt.

    Literals of this type can be created using the Q_INT64_C() macro:

    \code
        qint64 value = Q_INT64_C(932838457459459);
    \endcode

    \sa Q_INT64_C(), quint64, qlonglong
*/

/*!
    \typedef quint64
    \relates <QtGlobal>

    Typedef for \c{unsigned long long int} (\c{unsigned __int64} on
    Windows). This type is guaranteed to be 64-bit on all platforms
    supported by Qt.

    Literals of this type can be created using the Q_UINT64_C()
    macro:

    \code
        quint64 value = Q_UINT64_C(932838457459459);
    \endcode

    \sa Q_UINT64_C(), qint64, qulonglong
*/

/*!
    \typedef quintptr
    \relates <QtGlobal>

    Integral type for representing a pointers (useful for hashing,
    etc.).

    Typedef for either quint32 or quint64. This type is guaranteed to
    be the same size as a pointer on all platforms supported by Qt. On
    a system with 32-bit pointers, quintptr is a typedef for quint32;
    on a system with 64-bit pointers, quintptr is a typedef for
    quint64.

    Note that quintptr is unsigned. Use qptrdiff for signed values.

    \sa qptrdiff, quint32, quint64
*/

/*!
    \typedef qptrdiff
    \relates <QtGlobal>

    Integral type for representing pointer differences.

    Typedef for either qint32 or qint64. This type is guaranteed to be
    the same size as a pointer on all platforms supported by Qt. On a
    system with 32-bit pointers, quintptr is a typedef for quint32; on
    a system with 64-bit pointers, quintptr is a typedef for quint64.

    Note that qptrdiff is signed. Use quintptr for unsigned values.

    \sa quintptr, qint32, qint64
*/

/*!
    \typedef QtMsgHandler
    \relates <QtGlobal>

    This is a typedef for a pointer to a function with the following
    signature:

    \code
        void myMsgHandler(QtMsgType, const char *);
    \endcode

    \sa QtMsgType, qInstallMsgHandler()
*/

/*!
    \enum QtMsgType
    \relates <QtGlobal>

    This enum describes the messages that can be sent to a message
    handler (QtMsgHandler). You can use the enum to identify and
    associate the various message types with the appropriate
    actions.

    \value QtDebugMsg
           A message generated by the qDebug() function.
    \value QtWarningMsg
           A message generated by the qWarning() function.
    \value QtCriticalMsg
           A message generated by the qCritical() function.
    \value QtFatalMsg
           A message generated by the qFatal() function.
    \value QtSystemMsg


    \sa QtMsgHandler, qInstallMsgHandler()
*/

/*! \macro qint64 Q_INT64_C(literal)
    \relates <QtGlobal>

    Wraps the signed 64-bit integer \a literal in a
    platform-independent way. For example:

    \code
        qint64 value = Q_INT64_C(932838457459459);
    \endcode

    \sa qint64, Q_UINT64_C()
*/

/*! \macro quint64 Q_UINT64_C(literal)
    \relates <QtGlobal>

    Wraps the unsigned 64-bit integer \a literal in a
    platform-independent way. For example:

    \code
        quint64 value = Q_UINT64_C(932838457459459);
    \endcode

    \sa quint64, Q_INT64_C()
*/

/*! \typedef qlonglong
    \relates <QtGlobal>

    Typedef for \c{long long int} (\c __int64 on Windows). This is
    the same as \l qint64.

    \sa qulonglong, qint64
*/

/*!
    \typedef qulonglong
    \relates <QtGlobal>

    Typedef for \c{unsigned long long int} (\c{unsigned __int64} on
    Windows). This is the same as \l quint64.

    \sa quint64, qlonglong
*/

/*! \fn const T &qAbs(const T &value)
    \relates <QtGlobal>

    Returns the absolute value of \a value. For example:

    \code
        int absoluteValue;
        int myValue = -4;

        absoluteValue = qAbs(myValue);
        // absoluteValue == 4
    \endcode
*/

/*! \fn int qRound(qreal value)
    \relates <QtGlobal>

    Rounds \a value to the nearest integer. For example:

    \code
        qreal valueA = 2.3;
        qreal valueB = 2.7;

        int roundedValueA = qRound(valueA);
        \\ roundedValueA = 2
        int roundedValueB = qRound(valueB);
        \\ roundedValueB = 3
    \endcode
*/

/*! \fn qint64 qRound64(qreal value)
    \relates <QtGlobal>

    Rounds \a value to the nearest 64-bit integer. For example:

    \code
        qreal valueA = 42949672960.3;
        qreal valueB = 42949672960.7;

        int roundedValueA = qRound(valueA);
        \\ roundedValueA = 42949672960
        int roundedValueB = qRound(valueB);
        \\ roundedValueB = 42949672961
    \endcode
*/

/*! \fn const T &qMin(const T &value1, const T &value2)
    \relates <QtGlobal>

    Returns the minimum of \a value1 and \a value2. For example:

    \code
        int myValue = 6;
        int yourValue = 4;

        int minValue = qMin(myValue, yourValue);
        // minValue == yourValue
    \endcode

    \sa qMax(), qBound()
*/

/*! \fn const T &qMax(const T &value1, const T &value2)
    \relates <QtGlobal>

    Returns the maximum of \a value1 and \a value2. For example:

    \code
        int myValue = 6;
        int yourValue = 4;

        int maxValue = qMax(myValue, yourValue);
        // maxValue == myValue
    \endcode

    \sa qMin(), qBound()
*/

/*! \fn const T &qBound(const T &min, const T &value, const T &max)
    \relates <QtGlobal>

    Returns \a value bounded by \a min and \a max. This is equivalent
    to qMax(\a min, qMin(\a value, \a max)). For example:

    \code
        int myValue = 10;
        int minValue = 2;
        int maxValue = 6;

        int boundedValue = qBound(minValue, myValue, maxValue);
        // boundedValue == 6
    \endcode

    \sa qMin(), qMax()
*/

/*!
    \typedef Q_INT8
    \relates <QtGlobal>
    \compat

    Use \l qint8 instead.
*/

/*!
    \typedef Q_UINT8
    \relates <QtGlobal>
    \compat

    Use \l quint8 instead.
*/

/*!
    \typedef Q_INT16
    \relates <QtGlobal>
    \compat

    Use \l qint16 instead.
*/

/*!
    \typedef Q_UINT16
    \relates <QtGlobal>
    \compat

    Use \l quint16 instead.
*/

/*!
    \typedef Q_INT32
    \relates <QtGlobal>
    \compat

    Use \l qint32 instead.
*/

/*!
    \typedef Q_UINT32
    \relates <QtGlobal>
    \compat

    Use \l quint32 instead.
*/

/*!
    \typedef Q_INT64
    \relates <QtGlobal>
    \compat

    Use \l qint64 instead.
*/

/*!
    \typedef Q_UINT64
    \relates <QtGlobal>
    \compat

    Use \l quint64 instead.
*/

/*!
    \typedef Q_LLONG
    \relates <QtGlobal>
    \compat

    Use \l qint64 instead.
*/

/*!
    \typedef Q_ULLONG
    \relates <QtGlobal>
    \compat

    Use \l quint64 instead.
*/

/*!
    \typedef Q_LONG
    \relates <QtGlobal>
    \compat

    Use \c{void *} instead.
*/

/*!
    \typedef Q_ULONG
    \relates <QtGlobal>
    \compat

    Use \c{void *} instead.
*/

/*! \fn bool qSysInfo(int *wordSize, bool *bigEndian)
    \relates <QtGlobal>

    Use QSysInfo::WordSize and QSysInfo::ByteOrder instead.
*/

/*!
    \fn bool qt_winUnicode()
    \relates <QtGlobal>

    Use QSysInfo::WindowsVersion and QSysInfo::WV_DOS_based instead.

    \sa QSysInfo
*/

/*!
    \fn int qWinVersion()
    \relates <QtGlobal>

    Use QSysInfo::WindowsVersion instead.

    \sa QSysInfo
*/

/*!
    \fn int qMacVersion()
    \relates <QtGlobal>

    Use QSysInfo::MacintoshVersion instead.

    \sa QSysInfo
*/

/*!
    \macro QT_VERSION
    \relates <QtGlobal>

    This macro expands a numeric value of the form 0xMMNNPP (MM =
    major, NN = minor, PP = patch) that specifies Qt's version
    number. For example, if you compile your application against Qt
    4.1.2, the QT_VERSION macro will expand to 0x040102.

    You can use QT_VERSION to use the latest Qt features where
    available. For example:

    \code
        #if QT_VERSION >= 0x040100
            QIcon icon = style()->standardIcon(QStyle::SP_TrashIcon);
        #else
            QPixmap pixmap = style()->standardPixmap(QStyle::SP_TrashIcon);
            QIcon icon(pixmap);
        #endif
    \endcode

    \sa QT_VERSION_STR, qVersion()
*/

/*!
    \macro QT_VERSION_STR
    \relates <QtGlobal>

    This macro expands to a string that specifies Qt's version number
    (for example, "4.1.2"). This is the version against which the
    application is compiled.

    \sa qVersion(), QT_VERSION
*/

/*!
    \relates <QtGlobal>

    Returns the version number of Qt at run-time as a string (for
    example, "4.1.2"). This may be a different version than the
    version the application was compiled against.

    \sa QT_VERSION_STR
*/

const char *qVersion()
{
    return QT_VERSION_STR;
}

bool qSharedBuild()
{
#ifdef QT_SHARED
    return true;
#else
    return false;
#endif
}

/*****************************************************************************
  System detection routines
 *****************************************************************************/

/*!
    \class QSysInfo
    \brief The QSysInfo class provides information about the system.

    \list
    \o \l WordSize specifies the size of a pointer for the platform
       on which the application is compiled.
    \o \l ByteOrder specifies whether the platform is big-endian or
       little-endian.
    \o \l WindowsVersion specifies the version of the Windows operating
       system on which the application is run (Windows only)
    \o \l MacintoshVersion specifies the version of the Macintosh
       operating system on which the application is run (Mac only).
    \endlist

    Some constants are defined only on certain platforms. You can use
    the preprocessor symbols Q_WS_WIN and Q_WS_MAC to test that
    the application is compiled under Windows or Mac.

    \sa QLibraryInfo
*/

/*!
    \enum QSysInfo::Sizes

    This enum provides platform-specific information about the sizes of data
    structures used by the underlying architecture.

    \value WordSize The size in bits of a pointer for the platform on which
           the application is compiled (32 or 64).
*/

/*!
    \variable QSysInfo::WindowsVersion
    \brief the version of the Windows operating system on which the
           application is run (Windows only)
*/

/*!
    \variable QSysInfo::MacintoshVersion
    \brief the version of the Macintosh operating system on which
           the application is run (Mac only).
*/

/*!
    \enum QSysInfo::Endian

    \value BigEndian  Big-endian byte order (also called Network byte order)
    \value LittleEndian  Little-endian byte order
    \value ByteOrder  Equals BigEndian or LittleEndian, depending on
                      the platform's byte order.
*/

/*!
    \enum QSysInfo::WinVersion

    This enum provides symbolic names for the various versions of the
    Windows operating system. On Windows, the
    QSysInfo::WindowsVersion variable gives the version of the system
    on which the application is run.

    MS-DOS-based versions:

    \value WV_32s   Windows 3.1 with Win 32s
    \value WV_95    Windows 95
    \value WV_98    Windows 98
    \value WV_Me    Windows Me

    NT-based versions:

    \value WV_NT    Windows NT
    \value WV_2000  Windows 2000
    \value WV_XP    Windows XP
    \value WV_2003  Windows Server 2003
    \value WV_VISTA Windows Vista

    CE-based versions:

    \value WV_CE    Windows CE
    \value WV_CENET Windows CE .NET

    The following masks can be used for testing whether a Windows
    version is MS-DOS-based, NT-based, or CE-based:

    \value WV_DOS_based MS-DOS-based version of Windows
    \value WV_NT_based  NT-based version of Windows
    \value WV_CE_based  CE-based version of Windows

    \sa MacVersion
*/

/*!
    \enum QSysInfo::MacVersion

    This enum provides symbolic names for the various versions of the
    Macintosh operating system. On Mac, the
    QSysInfo::MacintoshVersion variable gives the version of the
    system on which the application is run.

    \value MV_9        Mac OS 9 (unsupported)
    \value MV_10_0     Mac OS X 10.0 (unsupported)
    \value MV_10_1     Mac OS X 10.1 (unsupported)
    \value MV_10_2     Mac OS X 10.2 (unsupported)
    \value MV_10_3     Mac OS X 10.3
    \value MV_10_4     Mac OS X 10.4
    \value MV_10_5     Mac OS X 10.5
    \value MV_Unknown  An unknown and currently unsupported platform

    \value MV_CHEETAH  Apple codename for MV_10_0
    \value MV_PUMA     Apple codename for MV_10_1
    \value MV_JAGUAR   Apple codename for MV_10_2
    \value MV_PANTHER  Apple codename for MV_10_3
    \value MV_TIGER    Apple codename for MV_10_4
    \value MV_LEOPARD  Apple codename for MV_10_5

    \sa WinVersion
*/

/*!
    \macro Q_WS_MAC
    \relates <QtGlobal>

    Defined on Mac OS X.

    \sa Q_WS_WIN, Q_WS_X11, Q_WS_QWS
*/

/*!
    \macro Q_WS_WIN
    \relates <QtGlobal>

    Defined on Windows.

    \sa Q_WS_MAC, Q_WS_X11, Q_WS_QWS
*/

/*!
    \macro Q_WS_X11
    \relates <QtGlobal>

    Defined on X11.

    \sa Q_WS_MAC, Q_WS_WIN, Q_WS_QWS
*/

/*!
    \macro Q_WS_QWS
    \relates <QtGlobal>

    Defined on Qtopia Core.

    \sa Q_WS_MAC, Q_WS_WIN, Q_WS_X11
*/

/*!
    \macro Q_OS_DARWIN
    \relates <QtGlobal>

    Defined on Darwin OS (synonym for Q_OS_MAC).
*/

/*!
    \macro Q_OS_MSDOS
    \relates <QtGlobal>

    Defined on MS-DOS and Windows.
*/

/*!
    \macro Q_OS_OS2
    \relates <QtGlobal>

    Defined on OS/2.
*/

/*!
    \macro Q_OS_OS2EMX
    \relates <QtGlobal>

    Defined on XFree86 on OS/2 (not PM).
*/

/*!
    \macro Q_OS_WIN32
    \relates <QtGlobal>

    Defined on all supported versions of Windows.
*/

/*!
    \macro Q_OS_CYGWIN
    \relates <QtGlobal>

    Defined on Cygwin.
*/

/*!
    \macro Q_OS_SOLARIS
    \relates <QtGlobal>

    Defined on Sun Solaris.
*/

/*!
    \macro Q_OS_HPUX
    \relates <QtGlobal>

    Defined on HP-UX.
*/

/*!
    \macro Q_OS_ULTRIX
    \relates <QtGlobal>

    Defined on DEC Ultrix.
*/

/*!
    \macro Q_OS_LINUX
    \relates <QtGlobal>

    Defined on Linux.
*/

/*!
    \macro Q_OS_FREEBSD
    \relates <QtGlobal>

    Defined on FreeBSD.
*/

/*!
    \macro Q_OS_NETBSD
    \relates <QtGlobal>

    Defined on NetBSD.
*/

/*!
    \macro Q_OS_OPENBSD
    \relates <QtGlobal>

    Defined on OpenBSD.
*/

/*!
    \macro Q_OS_BSDI
    \relates <QtGlobal>

    Defined on BSD/OS.
*/

/*!
    \macro Q_OS_IRIX
    \relates <QtGlobal>

    Defined on SGI Irix.
*/

/*!
    \macro Q_OS_OSF
    \relates <QtGlobal>

    Defined on HP Tru64 UNIX.
*/

/*!
    \macro Q_OS_SCO
    \relates <QtGlobal>

    Defined on SCO OpenServer 5.
*/

/*!
    \macro Q_OS_UNIXWARE
    \relates <QtGlobal>

    Defined on UnixWare 7, Open UNIX 8.
*/

/*!
    \macro Q_OS_AIX
    \relates <QtGlobal>

    Defined on AIX.
*/

/*!
    \macro Q_OS_HURD
    \relates <QtGlobal>

    Defined on GNU Hurd.
*/

/*!
    \macro Q_OS_DGUX
    \relates <QtGlobal>

    Defined on DG/UX.
*/

/*!
    \macro Q_OS_RELIANT
    \relates <QtGlobal>

    Defined on Reliant UNIX.
*/

/*!
    \macro Q_OS_DYNIX
    \relates <QtGlobal>

    Defined on DYNIX/ptx.
*/

/*!
    \macro Q_OS_QNX
    \relates <QtGlobal>

    Defined on QNX.
*/

/*!
    \macro Q_OS_QNX6
    \relates <QtGlobal>

    Defined on QNX RTP 6.1.
*/

/*!
    \macro Q_OS_LYNX
    \relates <QtGlobal>

    Defined on LynxOS.
*/

/*!
    \macro Q_OS_BSD4
    \relates <QtGlobal>

    Defined on Any BSD 4.4 system.
*/

/*!
    \macro Q_OS_UNIX
    \relates <QtGlobal>

    Defined on Any UNIX BSD/SYSV system.
*/

/*!
    \macro Q_CC_SYM
    \relates <QtGlobal>

    Defined if the application is compiled using Digital Mars C/C++
    (used to be Symantec C++).
*/

/*!
    \macro Q_CC_MWERKS
    \relates <QtGlobal>

    Defined if the application is compiled using Metrowerks
    CodeWarrior.
*/

/*!
    \macro Q_CC_MSVC
    \relates <QtGlobal>

    Defined if the application is compiled using Microsoft Visual
    C/C++, Intel C++ for Windows.
*/

/*!
    \macro Q_CC_BOR
    \relates <QtGlobal>

    Defined if the application is compiled using Borland/Turbo C++.
*/

/*!
    \macro Q_CC_WAT
    \relates <QtGlobal>

    Defined if the application is compiled using Watcom C++.
*/

/*!
    \macro Q_CC_GNU
    \relates <QtGlobal>

    Defined if the application is compiled using GNU C++.
*/

/*!
    \macro Q_CC_COMEAU
    \relates <QtGlobal>

    Defined if the application is compiled using Comeau C++.
*/

/*!
    \macro Q_CC_EDG
    \relates <QtGlobal>

    Defined if the application is compiled using Edison Design Group
    C++.
*/

/*!
    \macro Q_CC_OC
    \relates <QtGlobal>

    Defined if the application is compiled using CenterLine C++.
*/

/*!
    \macro Q_CC_SUN
    \relates <QtGlobal>

    Defined if the application is compiled using Forte Developer, or
    Sun Studio C++.
*/

/*!
    \macro Q_CC_MIPS
    \relates <QtGlobal>

    Defined if the application is compiled using MIPSpro C++.
*/

/*!
    \macro Q_CC_DEC
    \relates <QtGlobal>

    Defined if the application is compiled using DEC C++.
*/

/*!
    \macro Q_CC_HPACC
    \relates <QtGlobal>

    Defined if the application is compiled using HP aC++.
*/

/*!
    \macro Q_CC_USLC
    \relates <QtGlobal>

    Defined if the application is compiled using SCO OUDK and UDK.
*/

/*!
    \macro Q_CC_CDS
    \relates <QtGlobal>

    Defined if the application is compiled using Reliant C++.
*/

/*!
    \macro Q_CC_KAI
    \relates <QtGlobal>

    Defined if the application is compiled using KAI C++.
*/

/*!
    \macro Q_CC_INTEL
    \relates <QtGlobal>

    Defined if the application is compiled using Intel C++ for Linux,
    Intel C++ for Windows.
*/

/*!
    \macro Q_CC_HIGHC
    \relates <QtGlobal>

    Defined if the application is compiled using MetaWare High C/C++.
*/

/*!
    \macro Q_CC_PGI
    \relates <QtGlobal>

    Defined if the application is compiled using Portland Group C++.
*/

/*!
    \macro Q_CC_GHS
    \relates <QtGlobal>

    Defined if the application is compiled using Green Hills
    Optimizing C++ Compilers.
*/

#if !defined(Q_BYTE_ORDER) && defined(QT_BUILD_QMAKE)
// needed to bootstrap qmake
static const unsigned int qt_one = 1;
const int QSysInfo::ByteOrder = ((*((unsigned char *) &qt_one) == 0) ? BigEndian : LittleEndian);
#endif

#if !defined(QWS) && defined(Q_OS_MAC)

#include "private/qcore_mac_p.h"
#include "qnamespace.h"

// This function has descended from Apple Source Code (FSpLocationFromFullPath),
// but changes have been made. [Creates a minimal alias from the full pathname]
Q_CORE_EXPORT OSErr qt_mac_create_fsspec(const QString &file, FSSpec *spec)
{
    FSRef fref;
    QByteArray utfs = file.toUtf8();
    OSErr ret = FSPathMakeRef((const UInt8 *)utfs.data(), &fref, NULL);
    if(ret == noErr)
        ret = FSGetCatalogInfo(&fref, kFSCatInfoNone, NULL, NULL, spec, NULL);
    return ret;
}

Q_CORE_EXPORT void qt_mac_to_pascal_string(QString s, Str255 str, TextEncoding encoding=0, int len=-1)
{
    if(len == -1)
        len = s.length();
#if 0
    UnicodeMapping mapping;
    mapping.unicodeEncoding = CreateTextEncoding(kTextEncodingUnicodeDefault,
                                                 kTextEncodingDefaultVariant,
                                                 kUnicode16BitFormat);
    mapping.otherEncoding = (encoding ? encoding : );
    mapping.mappingVersion = kUnicodeUseLatestMapping;

    UnicodeToTextInfo info;
    OSStatus err = CreateUnicodeToTextInfo(&mapping, &info);
    if(err != noErr) {
        qDebug("Qt: internal: Unable to create pascal string '%s'::%d [%ld]",
               s.left(len).latin1(), (int)encoding, err);
        return;
    }
    const int unilen = len * 2;
    const UniChar *unibuf = (UniChar *)s.unicode();
    ConvertFromUnicodeToPString(info, unilen, unibuf, str);
    DisposeUnicodeToTextInfo(&info);
#else
    Q_UNUSED(encoding);
    CFStringGetPascalString(QCFString(s), str, 256, CFStringGetSystemEncoding());
#endif
}

Q_CORE_EXPORT QString qt_mac_from_pascal_string(const Str255 pstr) {
    return QCFString(CFStringCreateWithPascalString(0, pstr, CFStringGetSystemEncoding()));
}



static QSysInfo::MacVersion macVersion()
{
#if __LP64__
typedef signed int SInt32;
#else
typedef signed long SInt32;
#endif
    SInt32 gestalt_version;
    if (Gestalt(gestaltSystemVersion, &gestalt_version) == noErr) {
        return QSysInfo::MacVersion(((gestalt_version & 0x00F0) >> 4) + 2);
    }
    return QSysInfo::MV_Unknown;
}
const QSysInfo::MacVersion QSysInfo::MacintoshVersion = macVersion();
#elif defined(Q_OS_WIN32) || defined(Q_OS_CYGWIN) || defined(Q_OS_TEMP)

#include "qt_windows.h"

static QSysInfo::WinVersion winVersion()
{
#ifndef VER_PLATFORM_WIN32s
#define VER_PLATFORM_WIN32s            0
#endif
#ifndef VER_PLATFORM_WIN32_WINDOWS
#define VER_PLATFORM_WIN32_WINDOWS  1
#endif
#ifndef VER_PLATFORM_WIN32_NT
#define VER_PLATFORM_WIN32_NT            2
#endif
#ifndef VER_PLATFORM_WIN32_CE
#define VER_PLATFORM_WIN32_CE            3
#endif

    static QSysInfo::WinVersion winver = QSysInfo::WV_NT;
#ifndef Q_OS_TEMP
    OSVERSIONINFOA osver;
    osver.dwOSVersionInfoSize = sizeof(osver);
    GetVersionExA(&osver);
#else
    DWORD qt_cever = 0;
    OSVERSIONINFOW osver;
    osver.dwOSVersionInfoSize = sizeof(osver);
    GetVersionEx(&osver);
    qt_cever = osver.dwMajorVersion * 100;
    qt_cever += osver.dwMinorVersion * 10;
#endif
    switch (osver.dwPlatformId) {
    case VER_PLATFORM_WIN32s:
        winver = QSysInfo::WV_32s;
        break;
    case VER_PLATFORM_WIN32_WINDOWS:
        // We treat Windows Me (minor 90) the same as Windows 98
        if (osver.dwMinorVersion == 90)
            winver = QSysInfo::WV_Me;
        else if (osver.dwMinorVersion == 10)
            winver = QSysInfo::WV_98;
        else
            winver = QSysInfo::WV_95;
        break;
#ifdef Q_OS_TEMP
    case VER_PLATFORM_WIN32_CE:
#ifdef Q_OS_TEMP
        if (qt_cever >= 400)
            winver = QSysInfo::WV_CENET;
        else
#endif
            winver = QSysInfo::WV_CE;
        break;
#endif
    default: // VER_PLATFORM_WIN32_NT
        if (osver.dwMajorVersion < 5) {
            winver = QSysInfo::WV_NT;
        } else if (osver.dwMajorVersion == 6) {
            winver = QSysInfo::WV_VISTA;
        } else if (osver.dwMinorVersion == 0) {
            winver = QSysInfo::WV_2000;
        } else if (osver.dwMinorVersion == 1) {
            winver = QSysInfo::WV_XP;
        } else if (osver.dwMinorVersion == 2) {
            winver = QSysInfo::WV_2003;
        } else {
            qWarning("Qt: Untested Windows version detected!");
            winver = QSysInfo::WV_NT_based;
        }
    }

#ifdef QT_DEBUG
    {
        QByteArray override = qgetenv("QT_WINVER_OVERRIDE");
        if (override.isEmpty())
            return winver;

        if (override == "Me")
            winver = QSysInfo::WV_Me;
        if (override == "95")
            winver = QSysInfo::WV_95;
        else if (override == "98")
            winver = QSysInfo::WV_98;
        else if (override == "NT")
            winver = QSysInfo::WV_NT;
        else if (override == "2000")
            winver = QSysInfo::WV_2000;
        else if (override == "2003")
            winver = QSysInfo::WV_2003;
        else if (override == "XP")
            winver = QSysInfo::WV_XP;
        else if (override == "VISTA")
            winver = QSysInfo::WV_VISTA;
    }
#endif

    return winver;
}

const QSysInfo::WinVersion QSysInfo::WindowsVersion = winVersion();

#endif


/*!
    \macro void Q_ASSERT(bool test)
    \relates <QtGlobal>

    Prints a warning message containing the source code file name and
    line number if \a test is false.

    Q_ASSERT() is useful for testing pre- and post-conditions
    during development. It does nothing if \c QT_NO_DEBUG was defined
    during compilation.

    Example:

    \code
        // File: div.cpp

        #include <QtGlobal>

        int divide(int a, int b)
        {
            Q_ASSERT(b != 0);
            return a / b;
        }
    \endcode

    If \c b is zero, the Q_ASSERT statement will output the following
    message using the qFatal() function:

    \code
        ASSERT: "b == 0" in file div.cpp, line 7
    \endcode

    \sa Q_ASSERT_X(), qFatal(), {Debugging Techniques}
*/

/*!
    \macro void Q_ASSERT_X(bool test, const char *where, const char *what)
    \relates <QtGlobal>

    Prints the message \a what together with the location \a where,
    the source file name and line number if \a test is false.

    Q_ASSERT_X is useful for testing pre- and post-conditions during
    development. It does nothing if \c QT_NO_DEBUG was defined during
    compilation.

    Example:

    \code
        // File: div.cpp

        #include <QtGlobal>

        int divide(int a, int b)
        {
            Q_ASSERT_X(b != 0, "divide", "division by zero");
            return a / b;
        }
    \endcode

    If \c b is zero, the Q_ASSERT_X statement will output the following
    message using the qFatal() function:

    \code
        ASSERT failure in divide: "division by zero", file div.cpp, line 7
    \endcode

    \sa Q_ASSERT(), qFatal(), {Debugging Techniques}
*/

/*!
    \macro void Q_CHECK_PTR(void *pointer)
    \relates <QtGlobal>

    If \a pointer is 0, prints a warning message containing the source
    code's file name and line number, saying that the program ran out
    of memory.

    Q_CHECK_PTR does nothing if \c QT_NO_DEBUG was defined during
    compilation.

    Example:

    \code
        int *a;

        Q_CHECK_PTR(a = new int[80]);   // WRONG!

        a = new (nothrow) int[80];      // Right
        Q_CHECK_PTR(a);
    \endcode

    \sa qWarning(), {Debugging Techniques}
*/


/*
  The Q_CHECK_PTR macro calls this function if an allocation check
  fails.
*/
void qt_check_pointer(const char *n, int l)
{
    qWarning("In file %s, line %d: Out of memory", n, l);
}

/*
  The Q_ASSERT macro calls this this function when the test fails.
*/
void qt_assert(const char *assertion, const char *file, int line)
{
    qFatal("ASSERT: \"%s\" in file %s, line %d", assertion, file, line);
}

/*
  The Q_ASSERT_X macro calls this this function when the test fails.
*/
void qt_assert_x(const char *where, const char *what, const char *file, int line)
{
    qFatal("ASSERT failure in %s: \"%s\", file %s, line %d", where, what, file, line);
}


/*
    Dijkstra's bisection algorithm to find the square root of an integer.
    Deliberately not exported as part of the Qt API, but used in both
    qsimplerichtext.cpp and qgfxraster_qws.cpp
*/
Q_CORE_EXPORT unsigned int qt_int_sqrt(unsigned int n)
{
    // n must be in the range 0...UINT_MAX/2-1
    if (n >= (UINT_MAX>>2)) {
        unsigned int r = 2 * qt_int_sqrt(n / 4);
        unsigned int r2 = r + 1;
        return (n >= r2 * r2) ? r2 : r;
    }
    uint h, p= 0, q= 1, r= n;
    while (q <= n)
        q <<= 2;
    while (q != 1) {
        q >>= 2;
        h= p + q;
        p >>= 1;
        if (r >= h) {
            p += q;
            r -= h;
        }
    }
    return p;
}

#if defined(qMemCopy)
#  undef qMemCopy
#endif
#if defined(qMemSet)
#  undef qMemSet
#endif

void *qMalloc(size_t size) { return ::malloc(size); }
void qFree(void *ptr) { ::free(ptr); }
void *qRealloc(void *ptr, size_t size) { return ::realloc(ptr, size); }
void *qMemCopy(void *dest, const void *src, size_t n) { return memcpy(dest, src, n); }
void *qMemSet(void *dest, int c, size_t n) { return memset(dest, c, n); }


static QtMsgHandler handler = 0;                // pointer to debug handler
static const int QT_BUFFER_LENGTH = 8192;       // internal buffer length

#ifdef Q_CC_MWERKS
#include <CoreServices/CoreServices.h>
extern bool qt_is_gui_used;
static void mac_default_handler(const char *msg)
{
    if (qt_is_gui_used) {
        Str255 pmsg;
        qt_mac_to_pascal_string(msg, pmsg);
        DebugStr(pmsg);
    } else {
        fprintf(stderr, msg);
    }
}
#endif // Q_CC_MWERKS


QString qt_error_string(int errorCode)
{
    const char *s = 0;
    QString ret;
    if (errorCode == -1) {
#if defined(Q_OS_WIN32)
        errorCode = GetLastError();
#else
        errorCode = errno;
#endif
    }
    switch (errorCode) {
    case 0:
        break;
    case EACCES:
        s = QT_TRANSLATE_NOOP("QIODevice", "Permission denied");
        break;
    case EMFILE:
        s = QT_TRANSLATE_NOOP("QIODevice", "Too many open files");
        break;
    case ENOENT:
        s = QT_TRANSLATE_NOOP("QIODevice", "No such file or directory");
        break;
    case ENOSPC:
        s = QT_TRANSLATE_NOOP("QIODevice", "No space left on device");
        break;
    default: {
#ifdef Q_OS_WIN
        QT_WA({
            unsigned short *string = 0;
            FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
                          NULL,
                          errorCode,
                          MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
                          (LPTSTR)&string,
                          0,
                          NULL);
            ret = QString::fromUtf16(string);
            LocalFree((HLOCAL)string);
        }, {
            char *string = 0;
            FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
                           NULL,
                           errorCode,
                           MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
                           (LPSTR)&string,
                           0,
                           NULL);
            ret = QString::fromLocal8Bit(string);
            LocalFree((HLOCAL)string);
        });
#elif !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && _POSIX_VERSION >= 200112L
        QByteArray buf(1024, '\0');
        strerror_r(errorCode, buf.data(), buf.size());
        ret = QString::fromLocal8Bit(buf.constData());
#else
        ret = QString::fromLocal8Bit(strerror(errorCode));
#endif
      break; }
    }
    if (s)
        // ######## this breaks moc build currently
//         ret = QCoreApplication::translate("QIODevice", s);
        ret = QString::fromLatin1(s);
    return ret.trimmed();
}

/*!
    \fn QtMsgHandler qInstallMsgHandler(QtMsgHandler handler)
    \relates <QtGlobal>

    Installs a Qt message \a handler whis has been defined
    previously. Returns a pointer to the message \a handler.

    The message handler is a function that prints out debug messages,
    warnings, critical and fatal error messages. The Qt library (debug
    version) contains hundreds of warning messages that are printed
    when internal errors (usually invalid function arguments)
    occur. If you implement your own message handler, you get total
    control of these messages.

    The default message handler prints the message to the standard
    output under X11 or to the debugger under Windows. If it is a
    fatal message, the application aborts immediately.

    Only one message handler can be defined, since this is usually
    done on an application-wide basis to control debug output.

    To restore the message handler, call \c qInstallMsgHandler(0).

    Example:

    \code
        #include <qapplication.h>
        #include <stdio.h>
        #include <stdlib.h>

        void myMessageOutput(QtMsgType type, const char *msg)
        {
            switch (type) {
            case QtDebugMsg:
                fprintf(stderr, "Debug: %s\n", msg);
                break;
            case QtWarningMsg:
                fprintf(stderr, "Warning: %s\n", msg);
                break;
            case QtCriticalMsg:
                fprintf(stderr, "Critical: %s\n", msg);
                break;
            case QtFatalMsg:
                fprintf(stderr, "Fatal: %s\n", msg);
                abort();
            }
        }

        int main(int argc, char **argv)
        {
            qInstallMsgHandler(myMessageOutput);
            QApplication app(argc, argv);
            ...
            return app.exec();
        }
    \endcode

    \sa qDebug(), qWarning(), qCritical(), qFatal(), QtMsgType,
    {Debugging Techniques}
*/
QtMsgHandler qInstallMsgHandler(QtMsgHandler h)
{
    QtMsgHandler old = handler;
    handler = h;
    return old;
}


void qt_message_output(QtMsgType msgType, const char *buf)
{
    if (handler) {
        (*handler)(msgType, buf);
    } else {
#if defined(Q_CC_MWERKS)
        mac_default_handler(buf);
#elif defined(Q_OS_TEMP)
        QString fstr(buf);
        OutputDebugString((fstr + "\n").utf16());
#else
        fprintf(stderr, "%s\n", buf);
        fflush(stderr);
#endif
    }

    if (msgType == QtFatalMsg
        || (msgType == QtWarningMsg
            && (!qgetenv("QT_FATAL_WARNINGS").isNull())) ) {

#if defined(Q_CC_MSVC) && defined(QT_DEBUG) && defined(_DEBUG) && defined(_CRT_ERROR)
        // get the current report mode
        int reportMode = _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_WNDW);
        _CrtSetReportMode(_CRT_ERROR, reportMode);
        int ret = _CrtDbgReport(_CRT_ERROR, __FILE__, __LINE__, QT_VERSION_STR, buf);
        if (ret == 0  && reportMode & _CRTDBG_MODE_WNDW)
            return; // ignore
        else if (ret == 1)
            _CrtDbgBreak();
#endif

#if defined(Q_OS_UNIX) && defined(QT_DEBUG)
        abort(); // trap; generates core dump
#else
        exit(1); // goodbye cruel world
#endif
    }
}

#undef qDebug
/*!
    \relates <QtGlobal>

    Calls the message handler with the debug message \a msg. If no
    message handler has been installed, the message is printed to
    stderr. Under Windows, the message is sent to the debugger. This
    function does nothing if \c QT_NO_DEBUG_OUTPUT was defined during
    compilation.

    If you pass the function a format string and a list of arguments,
    it works in similar way to the C printf() function.

    Example:

    \code
        qDebug("Items in list: %d", myList.size());
    \endcode

    If you include \c <QtDebug>, a more convenient syntax is also
    available:

    \code
        qDebug() << "Brush:" << myQBrush << "Other value:" << i;
    \endcode

    This syntax automatically puts a single space between each item,
    and outputs a newline at the end. It supports many C++ and Qt
    types.

    \warning The internal buffer is limited to 8192 bytes, including
    the '\0'-terminator.

    \warning Passing (const char *)0 as argument to qDebug might lead
    to crashes on certain platforms due to the platform's printf() implementation.

    \sa qWarning(), qCritical(), qFatal(), qInstallMsgHandler(),
        {Debugging Techniques}
*/
void qDebug(const char *msg, ...)
{
    char buf[QT_BUFFER_LENGTH];
    buf[QT_BUFFER_LENGTH - 1] = '\0';
    va_list ap;
    va_start(ap, msg);                        // use variable arg list
    qvsnprintf(buf, QT_BUFFER_LENGTH - 1, msg, ap);
    va_end(ap);

    qt_message_output(QtDebugMsg, buf);
}

#undef qWarning
/*!
    \relates <QtGlobal>

    Calls the message handler with the warning message \a msg. If no
    message handler has been installed, the message is printed to
    stderr. Under Windows, the message is sent to the debugger. This
    function does nothing if \c QT_NO_WARNING_OUTPUT was defined
    during compilation; it exits if the environment variable \c
    QT_FATAL_WARNINGS is defined.

    This function takes a format string and a list of arguments,
    similar to the C printf() function.

    Example:
    \code
        void f(int c)
        {
            if (c > 200)
                qWarning("f: bad argument, c == %d", c);
        }
    \endcode

    If you include <QtDebug>, a more convenient syntax is
    also available:

    \code
       qWarning() << "Brush:" << myQBrush << "Other value:"
       << i;
    \endcode

    This syntax inserts a space between each item, and
    appends a newline at the end.

    \warning The internal buffer is limited to 8192 bytes, including
    the '\0'-terminator.

    \warning Passing (const char *)0 as argument to qWarning might lead
    to crashes on certain platforms due to the platforms printf implementation.

    \sa qDebug(), qCritical(), qFatal(), qInstallMsgHandler(),
        {Debugging Techniques}
*/
void qWarning(const char *msg, ...)
{
    char buf[QT_BUFFER_LENGTH];
    buf[QT_BUFFER_LENGTH - 1] = '\0';
    va_list ap;
    va_start(ap, msg); // use variable arg list
    qvsnprintf(buf, QT_BUFFER_LENGTH - 1, msg, ap);
    va_end(ap);

    qt_message_output(QtWarningMsg, buf);
}

/*!
    \relates <QtGlobal>

    Calls the message handler with the critical message \a msg. If no
    message handler has been installed, the message is printed to
    stderr. Under Windows, the message is sent to the debugger.

    This function takes a format string and a list of arguments, similar
    to the C printf() function.

    Example:
    \code
        void load(const QString &fileName)
        {
            QFile file(fileName);
            if (!file.exists())
                qCritical("File '%s' does not exist!", qPrintable(fileName));
        }
    \endcode

    If you include <QtDebug>, a more convenitent syntax is
    also available:

    \code
       qCritical() << "Brush:" << myQBrush << "Other
       value:" << i;
    \endcode

    A space is inserted between the items, and a newline is
    appended at the end.

    \warning The internal buffer is limited to 8192 bytes, including
    the '\0'-terminator.

    \warning Passing (const char *)0 as argument to qCritical might
    lead to crashes on certain platforms due to the platforms printf
    implementation.

    \sa qDebug(), qWarning(), qFatal(), qInstallMsgHandler(),
        {Debugging Techniques}
*/
void qCritical(const char *msg, ...)
{
    char buf[QT_BUFFER_LENGTH];
    buf[QT_BUFFER_LENGTH - 1] = '\0';
    va_list ap;
    va_start(ap, msg); // use variable arg list
    qvsnprintf(buf, QT_BUFFER_LENGTH - 1, msg, ap);
    va_end(ap);

    qt_message_output(QtCriticalMsg, buf);
}
#ifdef QT3_SUPPORT
void qSystemWarning(const char *msg, int code)
   { qCritical("%s (%s)", msg, qt_error_string(code).toLocal8Bit().constData()); }
#endif // QT3_SUPPORT

void qErrnoWarning(const char *msg, ...)
{
    char buf[QT_BUFFER_LENGTH];
    buf[QT_BUFFER_LENGTH - 1] = '\0';
    va_list ap;
    va_start(ap, msg);
    qvsnprintf(buf, QT_BUFFER_LENGTH - 1, msg, ap);
    va_end(ap);

    qCritical("%s (%s)", buf, qt_error_string(-1).toLocal8Bit().constData());
}

void qErrnoWarning(int code, const char *msg, ...)
{
    char buf[QT_BUFFER_LENGTH];
    buf[QT_BUFFER_LENGTH - 1] = '\0';
    va_list ap;
    va_start(ap, msg);
    qvsnprintf(buf, QT_BUFFER_LENGTH - 1, msg, ap);
    va_end(ap);

    qCritical("%s (%s)", buf, qt_error_string(code).toLocal8Bit().constData());
}

/*!
    \relates <QtGlobal>

    Calls the message handler with the fatal message \a msg. If no
    message handler has been installed, the message is printed to
    stderr. Under Windows, the message is sent to the debugger.

    For a release library this function will exit the application
    with return value 1. For the debug version this function will
    abort on Unix systems to create a core dump, and report a
    _CRT_ERROR on Windows allowing to connect a debugger to the
    application.

    This function takes a format string and a list of arguments,
    similar to the C printf() function.

    Example:
    \code
        int divide(int a, int b)
        {
            if (b == 0)                                // program error
                qFatal("divide: cannot divide by zero");
            return a / b;
        }
    \endcode

    \warning The internal buffer is limited to 8192 bytes, including
    the '\0'-terminator.

    \warning Passing (const char *)0 as argument to qFatal might lead
    to crashes on certain platforms due to the platforms printf implementation.

    \sa qDebug(), qCritical(), qWarning(), qInstallMsgHandler(),
        {Debugging Techniques}
*/
void qFatal(const char *msg, ...)
{
    char buf[QT_BUFFER_LENGTH];
    buf[QT_BUFFER_LENGTH - 1] = '\0';
    va_list ap;
    va_start(ap, msg); // use variable arg list
    qvsnprintf(buf, QT_BUFFER_LENGTH - 1, msg, ap);
    va_end(ap);

    qt_message_output(QtFatalMsg, buf);
}

// getenv is declared as deprecated in VS2005. This function
// makes use of the new secure getenv function.
QByteArray qgetenv(const char *varName)
{
#if defined(_MSC_VER) && _MSC_VER >= 1400
    size_t requiredSize;
    QByteArray buffer;
    getenv_s(&requiredSize, 0, 0, varName);
    if (requiredSize == 0)
        return buffer;
    buffer.resize(int(requiredSize));
    getenv_s(&requiredSize, buffer.data(), requiredSize, varName);
    return buffer;
#else
    return QByteArray(::getenv(varName));
#endif
}


#if defined(Q_OS_UNIX) && !defined(QT_NO_THREAD)
static QThreadStorage<uint *> randTLS; // Thread Local Storage for seed value
#endif

/*!
    \relates <QtGlobal>
    \since 4.2

    Thread-safe version of the standard C++ \c srand() function.

    Sets the argument \a seed to be used to generate a new random number sequence of
    pseudo random integers to be returned by qrand().

    If no seed value is provided, qrand() is automatically seeded with a value of 1.

    The sequence of random numbers generated is deterministic per thread. For example,
    if two threads call qsrand(1) and subsequently calls qrand(), the threads will get
    the same random number sequence.

    \sa qrand()
*/
void qsrand(uint seed)
{
#if defined(Q_OS_UNIX) && !defined(QT_NO_THREAD)
    if (!randTLS.hasLocalData())
        randTLS.setLocalData(new uint);
    *randTLS.localData() = seed;
#else
    // On Windows srand() and rand() already use Thread-Local-Storage
    // to store the seed between calls
    srand(seed);
#endif
}

/*!
    \relates <QtGlobal>
    \since 4.2

    Thread-safe version of the standard C++ \c rand() function.

    Returns a value between 0 and \c RAND_MAX (defined in \c <cstdlib> and
    \c <stdlib.h>), the next number in the current sequence of pseudo-random
    integers.

    Use \c qsrand() to initialize the pseudo-random number generator with
    a seed value.

    \sa qsrand()
*/
int qrand()
{
#if defined(Q_OS_UNIX) && !defined(QT_NO_THREAD)
    if (!randTLS.hasLocalData()) {
        randTLS.setLocalData(new uint);
        *randTLS.localData() = 1;
    }

    return rand_r(randTLS.localData());
#else
    // On Windows srand() and rand() already use Thread-Local-Storage
    // to store the seed between calls
    return rand();
#endif
}

/*!
    \macro forever
    \relates <QtGlobal>

    This macro is provided for convenience for writing infinite
    loops.

    Example:

    \code
        forever {
            ...
        }
    \endcode

    It is equivalent to \c{for (;;)}.

    If you're worried about namespace pollution, you can disable this
    macro by adding the following line to your \c .pro file:

    \code
        CONFIG += no_keywords
    \endcode

    \sa Q_FOREVER
*/

/*!
    \macro Q_FOREVER
    \relates <QtGlobal>

    Same as \l{forever}.

    This macro is available even when \c no_keywords is specified
    using the \c .pro file's \c CONFIG variable.

    \sa foreach()
*/

/*!
    \macro foreach(variable, container)
    \relates <QtGlobal>

    This macro is used to implement Qt's \c foreach loop. The \a
    variable parameter is a variable name or variable definition; the
    \a container parameter is a Qt container whose value type
    corresponds to the type of the variable. See \l{The foreach
    Keyword} for details.

    If you're worried about namespace pollution, you can disable this
    macro by adding the following line to your \c .pro file:

    \code
        CONFIG += no_keywords
    \endcode

    \sa Q_FOREACH()
*/

/*!
    \macro Q_FOREACH(variable, container)
    \relates <QtGlobal>

    Same as foreach(\a variable, \a container).

    This macro is available even when \c no_keywords is specified
    using the \c .pro file's \c CONFIG variable.

    \sa foreach()
*/

/*!
    \macro const char *QT_TR_NOOP(const char *sourceText)
    \relates <QtGlobal>

    Marks the string literal \a sourceText for dynamic translation in
    the current context (class), i.e the stored \a sourceText will not
    be altered. For example:

    \code
        QString FriendlyConversation::greeting(int type)
        {
          static const char *greeting_strings[] = {
              QT_TR_NOOP("Hello"),
              QT_TR_NOOP("Goodbye")
          };
          return tr(greeting_strings[type]);
        }
    \endcode

    The macro expands to \a sourceText.

    \sa QT_TRANSLATE_NOOP(), {Internationalization with Qt}
*/

/*!
    \macro const char *QT_TRANSLATE_NOOP(const char *context, const char *sourceText)
    \relates <QtGlobal>

    Marks the string literal \a sourceText for dynamic translation in
    the given \a context, i.e the stored \a sourceText will not be
    altered. The \a context is typically a class. For example:

    \code
        static const char *greeting_strings[] = {
          QT_TRANSLATE_NOOP("FriendlyConversation", "Hello"),
          QT_TRANSLATE_NOOP("FriendlyConversation", "Goodbye")
        };

        QString FriendlyConversation::greeting(int type)
        {
          return tr(greeting_strings[type]);
        }

        QString global_greeting(int type)
        {
          return qApp->translate("FriendlyConversation",
                           greeting_strings[type]);
        }
    \endcode

    The macro expands to \a sourceText.

    \sa QT_TR_NOOP(), {Internationalization with Qt}
*/

/*!
    \macro QT_POINTER_SIZE
    \relates <QtGlobal>

    Expands to the size of a pointer in bytes (4 or 8). This is
    equivalent to \c sizeof(void *) but can be used in a preprocessor
    directive.
*/

/*!
    \macro TRUE
    \relates <QtGlobal>
    \obsolete

    Synonym for \c true.

    \sa FALSE
*/

/*!
    \macro FALSE
    \relates <QtGlobal>
    \obsolete

    Synonym for \c false.

    \sa TRUE
*/

/*!
    \macro QABS(n)
    \relates <QtGlobal>
    \obsolete

    Use qAbs(\a n) instead.

    \sa QMIN(), QMAX()
*/

/*!
    \macro QMIN(x, y)
    \relates <QtGlobal>
    \obsolete

    Use qMin(\a x, \a y) instead.

    \sa QMAX(), QABS()
*/

/*!
    \macro QMAX(x, y)
    \relates <QtGlobal>
    \obsolete

    Use qMax(\a x, \a y) instead.

    \sa QMIN(), QABS()
*/

/*!
    \macro const char *qPrintable(const QString &str)
    \relates <QtGlobal>

    Returns \a str as a \c{const char *}. This is equivalent to
    \a{str}.toLocal8bit().constData().

    Example:

    \code
        qWarning("%s: %s", qPrintable(key), qPrintable(value));
    \endcode

    \sa qDebug(), qWarning(), qCritical(), qFatal()
*/

/*!
    \macro Q_DECLARE_TYPEINFO(Type, Flags)
    \relates <QtGlobal>

    You can use this macro to specify information about a custom type
    \a Type. With accurate type information, Qt's \l{generic
    containers} can choose appropriate storage methods and algorithms.

    \a Flags can be one of the following:

    \list
    \o \c Q_PRIMITIVE_TYPE specifies that \a Type is a POD (plain old
       data) type with no constructor or destructor.
    \o \c Q_MOVABLE_TYPE specifies that \a Type has a constructor
       and/or a destructor but can be moved in memory using \c
       memcpy().
    \o \c Q_COMPLEX_TYPE (the default) specifies that \a Type has
       constructors and/or a destructor and that it may not be moved
       in memory.
    \endlist

    Example of a "primitive" type:

    \code
        struct Point2D
        {
            int x;
            int y;
        };

        Q_DECLARE_TYPEINFO(Point2D, Q_PRIMITIVE_TYPE);
    \endcode

    Example of a movable type:

    \code
        class Point2D
        {
        public:
            Point2D() { data = new int[2]; }
            Point2D(const Point2D &other) { ... }
            ~Point2D() { delete[] data; }

            Point2D &operator=(const Point2D &other) { ... }

            int x() const { return data[0]; }
            int y() const { return data[1]; }

        private:
            int *data;
        };

        Q_DECLARE_TYPEINFO(Point2D, Q_MOVABLE_TYPE);
    \endcode
*/

/*!
    \macro Q_UNUSED(name)
    \relates <QtGlobal>

    Indicates to the compiler that the parameter with the specified
    \a name is not used in the body of a function. This can be used to
    suppress compiler warnings while allowing functions to be defined
    with meaningful parameter names in their signatures.
*/

#if defined(QT3_SUPPORT) && !defined(QT_NO_SETTINGS)
#include <qlibraryinfo.h>
static const char *qInstallLocation(QLibraryInfo::LibraryLocation loc)
{
    static QByteArray ret;
    ret = QLibraryInfo::location(loc).toLatin1();
    return ret.constData();
}
const char *qInstallPath()
{
    return qInstallLocation(QLibraryInfo::PrefixPath);
}
const char *qInstallPathDocs()
{
    return qInstallLocation(QLibraryInfo::DocumentationPath);
}
const char *qInstallPathHeaders()
{
    return qInstallLocation(QLibraryInfo::HeadersPath);
}
const char *qInstallPathLibs()
{
    return qInstallLocation(QLibraryInfo::LibrariesPath);
}
const char *qInstallPathBins()
{
    return qInstallLocation(QLibraryInfo::BinariesPath);
}
const char *qInstallPathPlugins()
{
    return qInstallLocation(QLibraryInfo::PluginsPath);
}
const char *qInstallPathData()
{
    return qInstallLocation(QLibraryInfo::DataPath);
}
const char *qInstallPathTranslations()
{
    return qInstallLocation(QLibraryInfo::TranslationsPath);
}
const char *qInstallPathSysconf()
{
    return qInstallLocation(QLibraryInfo::SettingsPath);
}
#endif

02638 struct QInternal_CallBackTable {
    QVector<QList<qInternalCallback> > callbacks;
};

Q_GLOBAL_STATIC(QInternal_CallBackTable, global_callback_table);

bool QInternal::registerCallback(Callback cb, qInternalCallback callback)
{
    if (cb >= 0 && cb < QInternal::LastCallback) {
        QInternal_CallBackTable *cbt = global_callback_table();
        cbt->callbacks.resize(cb + 1);
        cbt->callbacks[cb].append(callback);
        return true;
    }
    return false;
}

bool QInternal::unregisterCallback(Callback cb, qInternalCallback callback)
{
    if (cb >= 0 && cb < QInternal::LastCallback) {
        QInternal_CallBackTable *cbt = global_callback_table();
        return (bool) cbt->callbacks[cb].removeAll(callback);
    }
    return false;
}

bool QInternal::activateCallbacks(Callback cb, void **parameters)
{
    Q_ASSERT_X(cb >= 0, "QInternal::activateCallback()", "Callback id must be a valid id");

    QInternal_CallBackTable *cbt = global_callback_table();
    if (cbt && cb < cbt->callbacks.size()) {
        QList<qInternalCallback> callbacks = cbt->callbacks[cb];
        bool ret = false;
        for (int i=0; i<callbacks.size(); ++i)
            ret |= (callbacks.at(i))(parameters);
        return ret;
    }
    return false;
}

bool QInternal::callFunction(InternalFunction func, void **args)
{
    Q_ASSERT_X(func >= 0,
               "QInternal::callFunction()", "Callback id must be a valid id");
#ifndef QT_NO_QOBJECT
    switch (func) {
#ifndef QT_NO_THREAD
    case QInternal::CreateThreadForAdoption:
        *args = QAdoptedThread::createThreadForAdoption();
        return true;
#endif
    case QInternal::RefAdoptedThread:
        QThreadData::get2((QThread *) *args)->ref();
        return true;
    case QInternal::DerefAdoptedThread:
        QThreadData::get2((QThread *) *args)->deref();
        return true;
    case QInternal::SetCurrentThreadToMainThread:
        extern void qt_set_current_thread_to_main_thread();
        qt_set_current_thread_to_main_thread();
        return true;
    default:
        break;
    }
#else
    Q_UNUSED(args);
    Q_UNUSED(func);
#endif

    return false;
}

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