/******************************************************************************** Copyright (C) 1992-2006 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.******************************************************************************/#include "qdir.h"#include "qfile.h"#include "qconfig.h"#include "qsettings.h"#include "qlibraryinfo.h"#include "qpointer.h"#ifdef QT_BUILD_QMAKEextern QString qmake_libraryInfoFile();#else# include "qcoreapplication.h"#endif#ifdef Q_OS_MAC#  include "private/qcore_mac_p.h"#endif#include "qconfig.cpp"#ifndef QT_NO_SETTINGSstruct QLibrarySettings{    QLibrarySettings();    ~QLibrarySettings() { delete static_cast<QSettings *>(settings); }    QSettings *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;    }    Q_GLOBAL_STATIC(QLibrarySettings, qt_library_settings)};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);    return 0;     //no luck}/*!    \class QLibraryInfo    \brief The QLibraryInfo class provides information about the Qt library.    \ingroup misc    \mainclass    Many pieces of information are established when Qt is configured.    Installation paths, license information, and even a unique build    key. This class provides an abstraction for accessing this    information.    \table    \header \o Function           \o Return value    \row    \o buildKey()         \o A string that identifies the Qt version and                                     the configuration. This key is used to ensure                                     that \l{plugins} link against the same version                                     of Qt as the application.    \row    \o location()         \o The path to a certain Qt                                     component (e.g., documentation, header files).    \row    \o licensee(),               licensedProducts() \o Licensing information.    \endtable    You can also use a \c qt.conf file to override the hard-coded paths    that are compiled into the Qt library. For more information, see    the \l {Using qt.conf} documentation.    \sa QSysInfo, {Using qt.conf}*//*! \internal   You cannot create a QLibraryInfo, instead only the static functions are available to query   information.*/QLibraryInfo::QLibraryInfo(){ }/*!  Returns the person to whom this build of Qt is licensed.  \sa licensedProducts()*/QStringQLibraryInfo::licensee(){    const char *str = QT_CONFIGURE_LICENSEE;    return QString::fromLocal8Bit(str);}/*!  Returns the products that the license for this build of Qt has access to.  \sa licensee()*/QStringQLibraryInfo::licensedProducts(){    const char *str = QT_CONFIGURE_LICENSED_PRODUCTS;    return QString::fromLatin1(str);}/*!    Returns a unique key identifying this build of Qt and its    configurations. This key is not globally unique, rather only useful    for establishing of two configurations are compatible. This can be    used to compare with the \c QT_BUILD_KEY preprocessor symbol.    \sa location()*/QStringQLibraryInfo::buildKey(){    return QString::fromLatin1(QT_BUILD_KEY);}/*!  Returns the location specified by \a loc.*/QStringQLibraryInfo::location(LibraryLocation loc){    QString ret;    if(!QLibraryInfoPrivate::configuration()) {        const char *path = 0;        switch (loc) {#ifdef QT_CONFIGURE_PREFIX_PATH        case PrefixPath:            path = QT_CONFIGURE_PREFIX_PATH;            break;#endif#ifdef QT_CONFIGURE_DOCUMENTATION_PATH        case DocumentationPath:            path = QT_CONFIGURE_DOCUMENTATION_PATH;            break;#endif#ifdef QT_CONFIGURE_HEADERS_PATH        case HeadersPath:            path = QT_CONFIGURE_HEADERS_PATH;            break;#endif#ifdef QT_CONFIGURE_LIBRARIES_PATH        case LibrariesPath:            path = QT_CONFIGURE_LIBRARIES_PATH;            break;#endif#ifdef QT_CONFIGURE_BINARIES_PATH        case BinariesPath:            path = QT_CONFIGURE_BINARIES_PATH;            break;#endif#ifdef QT_CONFIGURE_PLUGINS_PATH        case PluginsPath:            path = QT_CONFIGURE_PLUGINS_PATH;            break;#endif#ifdef QT_CONFIGURE_DATA_PATH        case DataPath:            path = QT_CONFIGURE_DATA_PATH;            break;#endif#ifdef QT_CONFIGURE_TRANSLATIONS_PATH        case TranslationsPath:            path = QT_CONFIGURE_TRANSLATIONS_PATH;            break;#endif#ifdef QT_CONFIGURE_SETTINGS_PATH        case SettingsPath:            path = QT_CONFIGURE_SETTINGS_PATH;            break;#endif#ifdef QT_CONFIGURE_EXAMPLES_PATH        case ExamplesPath:            path = QT_CONFIGURE_EXAMPLES_PATH;            break;#endif#ifdef QT_CONFIGURE_DEMOS_PATH        case DemosPath:            path = QT_CONFIGURE_DEMOS_PATH;            break;#endif        default:            break;        }        if (path)            ret = QString::fromLocal8Bit(path);    } else {        QString key;        QString defaultValue;        switch(loc) {        case PrefixPath:            key = QLatin1String("Prefix");            break;        case DocumentationPath:            key = QLatin1String("Documentation");            defaultValue = QLatin1String("doc");            break;        case HeadersPath:            key = QLatin1String("Headers");            defaultValue = QLatin1String("include");            break;        case LibrariesPath:            key = QLatin1String("Libraries");            defaultValue = QLatin1String("lib");            break;        case BinariesPath:            key = QLatin1String("Binaries");            defaultValue = QLatin1String("bin");            break;        case PluginsPath:            key = QLatin1String("Plugins");            defaultValue = QLatin1String("plugins");            break;        case DataPath:            key = QLatin1String("Data");            break;        case TranslationsPath:            key = QLatin1String("Translations");            defaultValue = QLatin1String("translations");            break;        case SettingsPath:            key = QLatin1String("Settings");            break;        case ExamplesPath:            key = QLatin1String("Examples");            break;        case DemosPath:            key = QLatin1String("Demos");            break;        default:            break;        }        if(!key.isNull()) {            QSettings *config = QLibraryInfoPrivate::configuration();            config->beginGroup(QLatin1String("Paths"));            QString subKey;            {                /*                  find the child group whose version number is closest                  to the library version.  for example and we have the                  following groups:                  Paths                  Paths/4.0                  Paths/4.1.2                  Paths/4.2.5                  Paths/5                  if QT_VERSION is 4.0.1, then we use 'Paths/4.0'                  if QT_VERSION is 4.1.5, then we use 'Paths/4.1.2'                  if QT_VERSION is 4.6.3, then we use 'Paths/4.2.5'                  if QT_VERSION is 6.0.2, then we use 'Paths/5'                  note: any of the trailing version numbers may be                  omitted (in which case, they default to zero),                  i.e. 4 == 4.0.0, 4.1 == 4.1.0, and so on                */                enum {                    QT_MAJOR = ((QT_VERSION >> 16) & 0xFF),                    QT_MINOR = ((QT_VERSION >> 8) & 0xFF),                    QT_PATCH = (QT_VERSION & 0xFF)                };                int maj = 0, min = 0, pat = 0;                QStringList children = config->childGroups();                for(int child = 0; child < children.size(); ++child) {                    QString cver = children.at(child);                    QStringList cver_list = cver.split(QLatin1Char('.'));                    if(cver_list.size() > 0 && cver_list.size() < 4) {                        bool ok;                        int cmaj = -1, cmin = -1, cpat = -1;                        cmaj = cver_list[0].toInt(&ok);                        if(!ok || cmaj < 0)                            continue;                        if(cver_list.size() >= 2) {                            cmin = cver_list[1].toInt(&ok);                            if(!ok)                                continue;                            if(cmin < 0)                                cmin = -1;                        }                        if(cver_list.size() >= 3) {                            cpat = cver_list[2].toInt(&ok);                            if(!ok)                                continue;                            if(cpat < 0)                                cpat = -1;                        }                        if((cmaj >= maj && cmaj <= QT_MAJOR) &&                           (cmin == -1 || (cmin >= min && cmin <= QT_MINOR)) &&                           (cpat == -1 || (cpat >= pat && cpat <= QT_PATCH)) &&                           config->contains(cver + QLatin1Char('/') + key)) {                            subKey = cver + QLatin1Char('/');                            maj = cmaj;                            min = cmin;                            pat = cpat;                        }                    }                }            }            ret = config->value(subKey + key, defaultValue).toString();            // expand environment variables in the form $(ENVVAR)            int rep;            QRegExp reg_var(QLatin1String("\\$\\(.*\\)"));            reg_var.setMinimal(true);            while((rep = reg_var.indexIn(ret)) != -1) {                ret.replace(rep, reg_var.matchedLength(),                            QString::fromLocal8Bit(qgetenv(ret.mid(rep + 2,                                reg_var.matchedLength() - 3).toLatin1().constData()).constData()));            }            config->endGroup();        }    }    if (QDir::isRelativePath(ret)) {        if (loc == PrefixPath) {            // we make the prefix path absolute to the executable's directory#ifdef QT_BUILD_QMAKE            return QFileInfo(qmake_libraryInfoFile()).absolutePath();#else            if (QCoreApplication::instance()) {#ifdef Q_OS_MAC	        CFBundleRef bundleRef = CFBundleGetMainBundle();		if (bundleRef) {		    QCFType<CFURLRef> urlRef = CFBundleCopyBundleURL(bundleRef);		    if (urlRef) {		        QCFString path = CFURLCopyFileSystemPath(urlRef, kCFURLPOSIXPathStyle);		        return QDir::cleanPath(path + QLatin1String("/Contents"));		    }		}#endif                return QDir(QCoreApplication::applicationDirPath()).absoluteFilePath(ret);            } else {                return QDir::current().absoluteFilePath(ret);            }#endif        } else {            // we make any other path absolute to the prefix directory            return QDir(location(PrefixPath)).absoluteFilePath(ret);        }    }    return ret;}/*!    \enum QLibraryInfo::LibraryLocation    \keyword library location    This enum type is used to specify a specific location    specifier:    \value PrefixPath The default prefix for all paths.    \value DocumentationPath The location for documentation upon install.    \value HeadersPath The location for all headers.    \value LibrariesPath The location of installed librarires.    \value BinariesPath The location of installed Qt binaries (tools and applications).    \value PluginsPath The location of installed Qt plugins.    \value DataPath The location of general Qt data.    \value TranslationsPath The location of translation information for Qt strings.    \value SettingsPath The location for Qt settings.    \value ExamplesPath The location for examples upon install.    \value DemosPath The location for demos upon install.    \sa location()*/#endif // QT_NO_SETTINGS