src/Translation.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // MuldeR's Utilities for Qt
   3 // Copyright (C) 2004-2016 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This library is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU Lesser General Public
   7 // License as published by the Free Software Foundation; either
   8 // version 2.1 of the License, or (at your option) any later version.
   9 //
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 // Lesser General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU Lesser General Public
  16 // License along with this library; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18 //
  19 // http://www.gnu.org/licenses/lgpl-2.1.txt
  20 //////////////////////////////////////////////////////////////////////////////////
  21
  22 //MUtils
  23 #include <MUtils/Translation.h>
  24
  25 //Qt
  26 #include <QPair>
  27 #include <QReadWriteLock>
  28 #include <QMap>
  29 #include <QStringList>
  30 #include <QTranslator>
  31 #include <QFileInfo>
  32 #include <QApplication>
  33
  34 //////////////////////////////////////////////////////////////////////////////////
  35 // TYPES
  36 //////////////////////////////////////////////////////////////////////////////////
  37
  38 typedef QPair<QString,QString> translation_info_t;
  39 typedef QPair<quint32,quint32> translation_data_t;
  40
  41 typedef QPair<translation_info_t, translation_data_t> translation_entry_t;
  42 typedef QMap<QString, translation_entry_t>            translation_store_t;
  43
  44 #define MAKE_ENTRY(NAME,PATH,SYSID,CNTRY) \
  45         qMakePair(qMakePair((NAME),(PATH)),qMakePair((SYSID),(CNTRY)))
  46
  47 //////////////////////////////////////////////////////////////////////////////////
  48 // TRANSLATIONS STORE
  49 //////////////////////////////////////////////////////////////////////////////////
  50
  51 static QReadWriteLock                      g_translation_lock;
  52 static QScopedPointer<translation_store_t> g_translation_data;
  53 static QScopedPointer<QTranslator>         g_translation_inst;
  54
  55 //////////////////////////////////////////////////////////////////////////////////
  56 // CONSTANT
  57 //////////////////////////////////////////////////////////////////////////////////
  58
  59 namespace MUtils
  60 {
  61         namespace Translation
  62         {
  63                 const char *const DEFAULT_LANGID = "en";
  64         }
  65 }
  66
  67 //////////////////////////////////////////////////////////////////////////////////
  68 // REGISTER TRANSLATION
  69 //////////////////////////////////////////////////////////////////////////////////
  70
  71 bool MUtils::Translation::insert(const QString &langId, const QString &qmFile, const QString &langName, const quint32 &systemId, const quint32 &country)
  72 {
  73         QWriteLocker writeLockTranslations(&g_translation_lock);
  74
  75         const QString key = langId.simplified().toLower();
  76         if(key.isEmpty() || qmFile.isEmpty() || langName.isEmpty() || (systemId < 1))
  77         {
  78                 return false;
  79         }
  80
  81         if(g_translation_data.isNull())
  82         {
  83                 g_translation_data.reset(new translation_store_t());
  84         }
  85
  86         if(g_translation_data->contains(key))
  87         {
  88                 qWarning("Translation store already contains entry for '%s', going to replace!", MUTILS_UTF8(key));
  89         }
  90
  91         g_translation_data->insert(key, MAKE_ENTRY(langName, qmFile, systemId, country));
  92         return true;
  93 }
  94
  95 //////////////////////////////////////////////////////////////////////////////////
  96 // GET TRANSLATION INFO
  97 //////////////////////////////////////////////////////////////////////////////////
  98
  99 int MUtils::Translation::enumerate(QStringList &list)
 100 {
 101         QReadLocker readLockTranslations(&g_translation_lock);
 102
 103         if(g_translation_data.isNull())
 104         {
 105                 list.clear();
 106                 return -1;
 107         }
 108
 109         list.swap(g_translation_data->keys());
 110         return list.count();
 111 }
 112
 113 QString MUtils::Translation::get_name(const QString &langId)
 114 {
 115         QReadLocker readLockTranslations(&g_translation_lock);
 116
 117         const QString key = langId.simplified().toLower();
 118         if(key.isEmpty() || g_translation_data.isNull() || (!g_translation_data->contains(key)))
 119         {
 120                 return QString();
 121         }
 122
 123         return (*g_translation_data)[key].first.first;
 124 }
 125
 126 quint32 MUtils::Translation::get_sysid(const QString &langId)
 127 {
 128         QReadLocker readLockTranslations(&g_translation_lock);
 129
 130         const QString key = langId.simplified().toLower();
 131         if(key.isEmpty() || g_translation_data.isNull() || (!g_translation_data->contains(key)))
 132         {
 133                 return 0;
 134         }
 135
 136         return (*g_translation_data)[key].second.first;
 137 }
 138
 139 quint32 MUtils::Translation::get_country(const QString &langId)
 140 {
 141         QReadLocker readLockTranslations(&g_translation_lock);
 142         const QString key = langId.simplified().toLower();
 143         if(key.isEmpty() || g_translation_data.isNull() || (!g_translation_data->contains(key)))
 144         {
 145                 return 0;
 146         }
 147
 148         return (*g_translation_data)[key].second.second;
 149 }
 150
 151 //////////////////////////////////////////////////////////////////////////////////
 152 // INSTALL TRANSLATION
 153 //////////////////////////////////////////////////////////////////////////////////
 154
 155 bool MUtils::Translation::install_translator(const QString &langId)
 156 {
 157         QReadLocker readLockTranslations(&g_translation_lock);
 158
 159         const QString key = langId.simplified().toLower();
 160         if(key.isEmpty() || g_translation_data.isNull() || (!g_translation_data->contains(key)))
 161         {
 162                 return false;
 163         }
 164
 165         const QString qmFile = (*g_translation_data)[key].first.second;
 166         readLockTranslations.unlock();
 167         return install_translator_from_file(qmFile);
 168 }
 169
 170 bool MUtils::Translation::install_translator_from_file(const QString &qmFile)
 171 {
 172         QWriteLocker writeLock(&g_translation_lock);
 173
 174         if(g_translation_inst.isNull())
 175         {
 176                 g_translation_inst.reset(new QTranslator());
 177         }
 178
 179         if(qmFile.isEmpty())
 180         {
 181                 QApplication::removeTranslator(g_translation_inst.data());
 182                 return true;
 183         }
 184
 185         const QFileInfo qmFileInfo(qmFile);
 186         if(!(qmFileInfo.exists() && qmFileInfo.isFile()))
 187         {
 188                 qWarning("Translation file not found:\n\"%s\"", MUTILS_UTF8(qmFile));
 189                 return false;
 190         }
 191
 192         const QString qmPath = QFileInfo(qmFile).canonicalFilePath();
 193         if(!qmPath.isEmpty())
 194         {
 195                 QApplication::removeTranslator(g_translation_inst.data());
 196                 if(g_translation_inst->load(qmPath))
 197                 {
 198                         QApplication::installTranslator(g_translation_inst.data());
 199                         return true;
 200                 }
 201         }
 202
 203         qWarning("Failed to load translation:\n\"%s\"",  MUTILS_UTF8(qmFile));
 204         return false;
 205 }