source: trunk/src/corelib/global/qlibraryinfo.cpp@ 240

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**
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** Contact: Qt Software Information ([email protected])
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** This file is part of the QtCore module of the Qt Toolkit.
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#include "qdir.h"
#include "qfile.h"    
#include "qconfig.h"
#include "qsettings.h"
#include "qlibraryinfo.h"
#include "qpointer.h"

#ifdef QT_BUILD_QMAKE
QT_BEGIN_NAMESPACE
extern QString qmake_libraryInfoFile();
QT_END_NAMESPACE
#else
# include "qcoreapplication.h"
#endif

#ifdef Q_OS_MAC
#  include "private/qcore_mac_p.h"
#endif

#include "qconfig.cpp"

QT_BEGIN_NAMESPACE

#ifndef QT_NO_SETTINGS

struct QLibrarySettings
{
    QLibrarySettings();
    ~QLibrarySettings() { delete static_cast<QSettings *>(settings); }
    QSettings *settings;
};
Q_GLOBAL_STATIC(QLibrarySettings, qt_library_settings)

class QLibraryInfoPrivate
{
public:
    static QSettings *findConfiguration();
    static void cleanup()
    {
        QLibrarySettings *ls = qt_library_settings();
        if (ls) {
            delete static_cast<QSettings *>(ls->settings);
            ls->settings = 0;
        }
    }
    static QSettings *configuration()
    {
#ifdef QT_NO_THREAD
        // This recursion guard should be a temporary solution; the recursive
        // dependency should be found and removed.
        static bool initializing = false;
        if (initializing)
            return 0;
        initializing = true;
#endif
        QLibrarySettings *ls = qt_library_settings();
#ifdef QT_NO_THREAD
        initializing = false;
#endif
        return ls ? static_cast<QSettings *>(qt_library_settings()->settings) : (QSettings*)0;
    }
};

QLibrarySettings::QLibrarySettings()
{
    settings = QLibraryInfoPrivate::findConfiguration();
#ifndef QT_BUILD_QMAKE
    qAddPostRoutine(QLibraryInfoPrivate::cleanup);
#endif
}

QSettings *QLibraryInfoPrivate::findConfiguration()
{
    QString qtconfig = QLatin1String(":/qt/etc/qt.conf");
#ifdef QT_BUILD_QMAKE
    if(!QFile::exists(qtconfig))
        qtconfig = qmake_libraryInfoFile();
#else
    if (!QFile::exists(qtconfig) && QCoreApplication::instance()) {
#ifdef Q_OS_MAC
        CFBundleRef bundleRef = CFBundleGetMainBundle();
        if (bundleRef) {
            QCFType<CFURLRef> urlRef = CFBundleCopyResourceURL(bundleRef,
                                                               QCFString(QLatin1String("qt.conf")),
                                                               0,
                                                               0);
            if (urlRef) {
                QCFString path = CFURLCopyFileSystemPath(urlRef, kCFURLPOSIXPathStyle);
                qtconfig = QDir::cleanPath(path);
            }
        }
        if (qtconfig.isEmpty())
#endif
            {
                QDir pwd(QCoreApplication::applicationDirPath());
                qtconfig = pwd.filePath(QLatin1String("qt.conf"));
            }
    }
#endif
    if (QFile::exists(qtconfig))
        return new QSettings(qtconfig, QSettings::IniFormat);