KDECore

kglobal.cpp

00001 /* This file is part of the KDE libraries
00002    Copyright (C) 1999 Sirtaj Singh Kanq <taj@kde.org>
00003    Copyright (C) 2007 Matthias Kretz <kretz@kde.org>
00004    Copyright (C) 2009 Olivier Goffart <ogoffart@kde.org>
00005 
00006    This library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Library General Public
00008    License version 2 as published by the Free Software Foundation.
00009 
00010    This library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Library General Public License for more details.
00014 
00015    You should have received a copy of the GNU Library General Public License
00016    along with this library; see the file COPYING.LIB.  If not, write to
00017    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00018    Boston, MA 02110-1301, USA.
00019 */
00020 
00021 /*
00022  * kglobal.cpp -- Implementation of namespace KGlobal.
00023  * Author:  Sirtaj Singh Kang
00024  * Generated:   Sat May  1 02:08:43 EST 1999
00025  */
00026 
00027 #undef KDE3_SUPPORT
00028 
00029 #include "kglobal.h"
00030 #include "kglobal_p.h"
00031 
00032 #include <config.h>
00033 
00034 #ifdef HAVE_SYS_STAT_H
00035 #include <sys/stat.h>
00036 #endif
00037 
00038 #include <QtCore/QList>
00039 #include <QtCore/QSet>
00040 
00041 #include <kaboutdata.h>
00042 #include <kconfig.h>
00043 #include <klocale.h>
00044 #include <kcharsets.h>
00045 #include <kstandarddirs.h>
00046 #include <kcomponentdata.h>
00047 #undef QT_NO_TRANSLATION
00048 #include <QtCore/QCoreApplication>
00049 #define QT_NO_TRANSLATION
00050 #include <QtCore/QTextCodec>
00051 #include "kcmdlineargs.h"
00052 #include <unistd.h> // umask
00053 
00054 #ifndef NDEBUG
00055 #define MYASSERT(x) if (!x) \
00056    qFatal("Fatal error: you need to have a KComponentData object before\n" \
00057          "you do anything that requires it! Examples of this are config\n" \
00058          "objects, standard directories or translations.");
00059 #else
00060 #define MYASSERT(x) /* nope */
00061 #endif
00062 
00063 // ~KConfig needs qrand(). qrand() depends on a Q_GLOBAL_STATIC. With this Q_CONSTRUCTOR_FUNCTION we
00064 // try to make qrand() live longer than any KConfig object.
00065 Q_CONSTRUCTOR_FUNCTION(qrand)
00066 
00067 typedef QSet<QString> KStringDict;
00068 mode_t s_umsk;
00069 
00070 class KGlobalPrivate
00071 {
00072     public:
00073         inline KGlobalPrivate()
00074             : stringDict(0),
00075             locale(0),
00076             charsets(0)
00077         {
00078             // the umask is read here before any threads are created to avoid race conditions
00079             mode_t tmp = 0;
00080             s_umsk = umask(tmp);
00081             umask(s_umsk);
00082         }
00083 
00084         inline ~KGlobalPrivate()
00085         {
00086             delete locale;
00087             locale = 0;
00088             delete charsets;
00089             charsets = 0;
00090             delete stringDict;
00091             stringDict = 0;
00092         }
00093 
00094         KComponentData activeComponent;
00095         KComponentData mainComponent; // holds a refcount
00096         KStringDict *stringDict;
00097         KLocale *locale;
00098         KCharsets *charsets;
00099 
00104         static KComponentData initFakeComponent()
00105         {
00106             QString name = QCoreApplication::applicationName();
00107             if(name.isEmpty())
00108                 name = qAppName();
00109             if(name.isEmpty())
00110                 name = QString::fromLatin1("kde");
00111             return KComponentData(name.toLatin1(), name.toLatin1(),
00112                                   KComponentData::SkipMainComponentRegistration);
00113         }
00114 };
00115 
00116 K_GLOBAL_STATIC(KGlobalPrivate, globalData)
00117 K_GLOBAL_STATIC_WITH_ARGS(KComponentData, fakeComponent, (KGlobalPrivate::initFakeComponent()))
00118 
00119 #define PRIVATE_DATA KGlobalPrivate *d = globalData
00120 
00121 KStandardDirs *KGlobal::dirs()
00122 {
00123     PRIVATE_DATA;
00124     return d->mainComponent.isValid() ? d->mainComponent.dirs() : fakeComponent->dirs();
00125 }
00126 
00127 KSharedConfig::Ptr KGlobal::config()
00128 {
00129     PRIVATE_DATA;
00130     return d->mainComponent.isValid() ? d->mainComponent.config() : fakeComponent->config();
00131 }
00132 
00133 const KComponentData &KGlobal::mainComponent()
00134 {
00135     PRIVATE_DATA;
00136     return d->mainComponent.isValid() ? d->mainComponent : *fakeComponent;
00137 }
00138 
00139 bool KGlobal::hasMainComponent()
00140 {
00141     if (globalData.isDestroyed()) {
00142         return false;
00143     }
00144     PRIVATE_DATA;
00145     return d->mainComponent.isValid();
00146 }
00147 
00148 KLocale *KGlobal::locale()
00149 {
00150     PRIVATE_DATA;
00151     if (d->locale == 0) {
00152         if (!d->mainComponent.isValid()) {
00153             return 0;
00154         }
00155 
00156         d->locale = new KLocale(d->mainComponent.catalogName());
00157         QTextCodec::setCodecForLocale(d->locale->codecForEncoding());
00158         d->mainComponent.aboutData()->translateInternalProgramName();
00159         QCoreApplication* coreApp = QCoreApplication::instance();
00160         if (coreApp) // testcase: kwrite --help: no qcore app
00161             QCoreApplication::installTranslator(new KDETranslator(coreApp));
00162     }
00163     return d->locale;
00164 }
00165 
00166 bool KGlobal::hasLocale()
00167 {
00168     if (globalData.isDestroyed()) {
00169         return false;
00170     }
00171     PRIVATE_DATA;
00172     return (d->locale != 0);
00173 }
00174 
00175 KCharsets *KGlobal::charsets()
00176 {
00177     PRIVATE_DATA;
00178     if (d->charsets == 0) {
00179         d->charsets = new KCharsets;
00180     }
00181 
00182     return d->charsets;
00183 }
00184 
00185 mode_t KGlobal::umask()
00186 {
00187     // Don't use PRIVATE_DATA here. This is called by ~KGlobalPrivate -> ~KConfig -> sync -> KSaveFile, so there's no KGlobalPrivate anymore.
00188     return s_umsk;
00189 }
00190 
00191 KComponentData KGlobal::activeComponent()
00192 {
00193     PRIVATE_DATA;
00194     MYASSERT(d->activeComponent.isValid());
00195     return d->activeComponent;
00196 }
00197 
00198 void KGlobal::setActiveComponent(const KComponentData &c)
00199 {
00200     PRIVATE_DATA;
00201     d->activeComponent = c;
00202     if (c.isValid() && d->locale) {
00203         d->locale->setActiveCatalog(c.catalogName());
00204     }
00205 }
00206 
00207 void KGlobal::newComponentData(const KComponentData &c)
00208 {
00209     PRIVATE_DATA;
00210     if (d->mainComponent.isValid()) {
00211         return;
00212     }
00213     d->mainComponent = c;
00214     KGlobal::setActiveComponent(c);
00215 }
00216 
00217 void KGlobal::setLocale(KLocale *locale, CopyCatalogs copy)
00218 {
00219     PRIVATE_DATA;
00220     if (copy == DoCopyCatalogs && d->locale)
00221         d->locale->copyCatalogsTo(locale);
00222     delete d->locale;
00223     d->locale = locale;
00224 }
00225 
00232 const QString &KGlobal::staticQString(const char *str)
00233 {
00234     return staticQString(QLatin1String(str));
00235 }
00236 
00243 const QString &KGlobal::staticQString(const QString &str)
00244 {
00245     PRIVATE_DATA;
00246     if (!d->stringDict) {
00247         d->stringDict = new KStringDict;
00248     }
00249 
00250    return *d->stringDict->insert(str);
00251 }
00252 
00253 QString KGlobal::caption()
00254 {
00255     PRIVATE_DATA;
00256     // Caption set from command line ?
00257     KCmdLineArgs *args = KCmdLineArgs::parsedArgs("kde");
00258     if (args && args->isSet("caption")) {
00259         return args->getOption("caption");
00260     } else {
00261         // We have some about data ?
00262         if (d->mainComponent.isValid() && d->mainComponent.aboutData()) {
00263             return d->mainComponent.aboutData()->programName();
00264         } else {
00265             // Last resort : application name
00266             return QCoreApplication::instance()->applicationName();
00267         }
00268     }
00269 }
00270 
00279 static int s_refCount = 0;
00280 static bool s_allowQuit = false;
00281 
00282 void KGlobal::ref()
00283 {
00284     ++s_refCount;
00285     //kDebug() << "KGlobal::ref() : refCount = " << s_refCount;
00286 }
00287 
00288 void KGlobal::deref()
00289 {
00290     --s_refCount;
00291     //kDebug() << "KGlobal::deref() : refCount = " << s_refCount;
00292     if (s_refCount <= 0 && s_allowQuit) {
00293         QCoreApplication::instance()->quit();
00294     }
00295 }
00296 
00297 void KGlobal::setAllowQuit(bool allowQuit)
00298 {
00299     s_allowQuit = allowQuit;
00300 }
00301 
00302 #undef PRIVATE_DATA
00303 
00304 QObject* KGlobal::findDirectChild_helper(const QObject* parent, const QMetaObject& mo)
00305 {
00306     if (!parent)
00307         return 0;
00308 
00309     const QObjectList &children = parent->children();
00310     for (int i = 0; i < children.size(); ++i) {
00311         QObject* obj = children.at(i);
00312         if (mo.cast(obj)) {
00313             return obj;
00314         }
00315     }
00316     return 0;
00317 
00318 }
KDECore

kglobal.cpp

KDECore

kdelibs
