KCalCore Library

filestorage.cpp

00001 /*
00002   This file is part of the kcalcore library.
00003 
00004   Copyright (c) 2002 Cornelius Schumacher <schumacher@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 as published by the Free Software Foundation; either
00009   version 2 of the License, or (at your option) any later version.
00010 
00011   This library is distributed in the hope that it will be useful,
00012   but WITHOUT ANY WARRANTY; without even the implied warranty of
00013   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014   Library General Public License for more details.
00015 
00016   You should have received a copy of the GNU Library General Public License
00017   along with this library; see the file COPYING.LIB.  If not, write to
00018   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019   Boston, MA 02110-1301, USA.
00020 */
00031 #include "filestorage.h"
00032 #include "exceptions.h"
00033 #include "icalformat.h"
00034 #include "memorycalendar.h"
00035 #include "vcalformat.h"
00036 
00037 #include <KDebug>
00038 
00039 using namespace KCalCore;
00040 
00041 /*
00042   Private class that helps to provide binary compatibility between releases.
00043 */
00044 //@cond PRIVATE
00045 class KCalCore::FileStorage::Private
00046 {
00047   public:
00048     Private( const QString &fileName, CalFormat *format )
00049       : mFileName( fileName ),
00050         mSaveFormat( format )
00051     {}
00052     ~Private() { delete mSaveFormat; }
00053 
00054     QString mFileName;
00055     CalFormat *mSaveFormat;
00056 };
00057 //@endcond
00058 
00059 FileStorage::FileStorage( const Calendar::Ptr &cal, const QString &fileName,
00060                           CalFormat *format )
00061   : CalStorage( cal ),
00062     d( new Private( fileName, format ) )
00063 {
00064 }
00065 
00066 FileStorage::~FileStorage()
00067 {
00068   delete d;
00069 }
00070 
00071 void FileStorage::setFileName( const QString &fileName )
00072 {
00073   d->mFileName = fileName;
00074 }
00075 
00076 QString FileStorage::fileName() const
00077 {
00078   return d->mFileName;
00079 }
00080 
00081 void FileStorage::setSaveFormat( CalFormat *format )
00082 {
00083   delete d->mSaveFormat;
00084   d->mSaveFormat = format;
00085 }
00086 
00087 CalFormat *FileStorage::saveFormat() const
00088 {
00089   return d->mSaveFormat;
00090 }
00091 
00092 bool FileStorage::open()
00093 {
00094   return true;
00095 }
00096 
00097 bool FileStorage::load()
00098 {
00099   // do we want to silently accept this, or make some noise?  Dunno...
00100   // it is a semantical thing vs. a practical thing.
00101   if ( d->mFileName.isEmpty() ) {
00102     return false;
00103   }
00104 
00105   // Always try to load with iCalendar. It will detect, if it is actually a
00106   // vCalendar file.
00107   bool success;
00108   // First try the supplied format. Otherwise fall through to iCalendar, then
00109   // to vCalendar
00110   success = saveFormat() && saveFormat()->load( calendar(), d->mFileName );
00111   if ( !success ) {
00112     ICalFormat iCal;
00113 
00114     success = iCal.load( calendar(), d->mFileName );
00115 
00116     if ( !success ) {
00117       if ( iCal.exception() ) {
00118         if ( iCal.exception()->code() == Exception::CalVersion1 ) {
00119           // Expected non vCalendar file, but detected vCalendar
00120           kDebug() << "Fallback to VCalFormat";
00121           VCalFormat vCal;
00122           success = vCal.load( calendar(), d->mFileName );
00123           calendar()->setProductId( vCal.productId() );
00124         } else {
00125           return false;
00126         }
00127       } else {
00128         kDebug() << "Warning! There should be an exception set.";
00129         return false;
00130       }
00131     } else {
00132       calendar()->setProductId( iCal.loadedProductId() );
00133     }
00134   }
00135 
00136   calendar()->setModified( false );
00137 
00138   return true;
00139 }
00140 
00141 bool FileStorage::save()
00142 {
00143   kDebug();
00144   if ( d->mFileName.isEmpty() ) {
00145     return false;
00146   }
00147 
00148   CalFormat *format = d->mSaveFormat ? d->mSaveFormat : new ICalFormat;
00149 
00150   bool success = format->save( calendar(), d->mFileName );
00151 
00152   if ( success ) {
00153     calendar()->setModified( false );
00154   } else {
00155     if ( !format->exception() ) {
00156       kDebug() << "Error. There should be an expection set.";
00157     } else {
00158       kDebug() << int( format->exception()->code() );
00159     }
00160   }
00161 
00162   if ( !d->mSaveFormat ) {
00163     delete format;
00164   }
00165 
00166   return success;
00167 }
00168 
00169 bool FileStorage::close()
00170 {
00171   return true;
00172 }
KCalCore Library

filestorage.cpp

KCalCore Library

KDE-PIM Libraries
