resourcefile.cpp00001
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00023 #include <signal.h>
00024 #include <sys/types.h>
00025 #include <sys/stat.h>
00026 #include <unistd.h>
00027
00028 #include <qfile.h>
00029 #include <qfileinfo.h>
00030 #include <qtimer.h>
00031
00032 #include <kapplication.h>
00033 #include <kconfig.h>
00034 #include <kdebug.h>
00035 #include <kio/scheduler.h>
00036 #include <klocale.h>
00037 #include <ksavefile.h>
00038 #include <kstandarddirs.h>
00039
00040 #include "formatfactory.h"
00041 #include "resourcefileconfig.h"
00042 #include "stdaddressbook.h"
00043 #include "lock.h"
00044
00045 #include "resourcefile.h"
00046
00047 using namespace KABC;
00048
00049 ResourceFile::ResourceFile( const KConfig *config )
00050 : Resource( config ), mFormat( 0 ),
00051 mAsynchronous( false )
00052 {
00053 QString fileName, formatName;
00054
00055 if ( config ) {
00056 fileName = config->readPathEntry( "FileName", StdAddressBook::fileName() );
00057 formatName = config->readEntry( "FileFormat", "vcard" );
00058 } else {
00059 fileName = StdAddressBook::fileName();
00060 formatName = "vcard";
00061 }
00062
00063 init( fileName, formatName );
00064 }
00065
00066 ResourceFile::ResourceFile( const QString &fileName,
00067 const QString &formatName )
00068 : Resource( 0 ), mFormat( 0 ),
00069 mAsynchronous( false )
00070 {
00071 init( fileName, formatName );
00072 }
00073
00074 void ResourceFile::init( const QString &fileName, const QString &formatName )
00075 {
00076 mFormatName = formatName;
00077
00078 FormatFactory *factory = FormatFactory::self();
00079 mFormat = factory->format( mFormatName );
00080
00081 if ( !mFormat ) {
00082 mFormatName = "vcard";
00083 mFormat = factory->format( mFormatName );
00084 }
00085
00086 connect( &mDirWatch, SIGNAL( dirty(const QString&) ), SLOT( fileChanged() ) );
00087 connect( &mDirWatch, SIGNAL( created(const QString&) ), SLOT( fileChanged() ) );
00088 connect( &mDirWatch, SIGNAL( deleted(const QString&) ), SLOT( fileChanged() ) );
00089
00090 setFileName( fileName );
00091
00092 mLock = 0;
00093 }
00094
00095 ResourceFile::~ResourceFile()
00096 {
00097 delete mFormat;
00098 mFormat = 0;
00099 }
00100
00101 void ResourceFile::writeConfig( KConfig *config )
00102 {
00103 Resource::writeConfig( config );
00104
00105 if ( mFileName == StdAddressBook::fileName() )
00106 config->deleteEntry( "FileName" );
00107 else
00108 config->writePathEntry( "FileName", mFileName );
00109
00110 config->writeEntry( "FileFormat", mFormatName );
00111 }
00112
00113 Ticket *ResourceFile::requestSaveTicket()
00114 {
00115 kdDebug(5700) << "ResourceFile::requestSaveTicket()" << endl;
00116
00117 if ( !addressBook() ) return 0;
00118
00119 delete mLock;
00120 mLock = new Lock( mFileName );
00121
00122 if ( mLock->lock() ) {
00123 addressBook()->emitAddressBookLocked();
00124 } else {
00125 addressBook()->error( mLock->error() );
00126 kdDebug(5700) << "ResourceFile::requestSaveTicket(): Unable to lock file '"
00127 << mFileName << "': " << mLock->error() << endl;
00128 return 0;
00129 }
00130
00131 return createTicket( this );
00132 }
00133
00134 void ResourceFile::releaseSaveTicket( Ticket *ticket )
00135 {
00136 delete ticket;
00137
00138 delete mLock;
00139 mLock = 0;
00140
00141 addressBook()->emitAddressBookUnlocked();
00142 }
00143
00144 bool ResourceFile::doOpen()
00145 {
00146 QFile file( mFileName );
00147
00148 if ( !file.exists() ) {
00149
00150 bool ok = file.open( IO_WriteOnly );
00151 if ( ok )
00152 file.close();
00153
00154 return ok;
00155 } else {
00156 QFileInfo fileInfo( mFileName );
00157 if ( readOnly() || !fileInfo.isWritable() ) {
00158 if ( !file.open( IO_ReadOnly ) )
00159 return false;
00160 } else {
00161 if ( !file.open( IO_ReadWrite ) )
00162 return false;
00163 }
00164
00165 if ( file.size() == 0 ) {
00166 file.close();
00167 kdDebug() << "File size is zero. Evaluating backups" << endl;
00168 for (int i=0; i!=20; i++)
00169 {
00170 QFile backup( mFileName + "__" + QString::number(i) );
00171 kdDebug() << "Evaluating" << backup.name() << " size: " << backup.size() << endl;
00172 if ( backup.size() != 0 )
00173 {
00174 kdDebug() << "Restoring backup " << i << endl;
00175 const QString src = mFileName + "__" + QString::number(i);
00176 const QString dest = mFileName;
00177
00178
00179 QFile::remove( dest );
00180
00181
00182 if ( backup.open( IO_ReadOnly ) ) {
00183 const QByteArray data = backup.readAll();
00184
00185 QFile out( dest );
00186 if ( out.open( IO_WriteOnly ) ) {
00187 out.writeBlock( data );
00188 out.close();
00189 }
00190
00191 backup.close();
00192 }
00193 return true;
00194 }
00195 }
00196 return true;
00197 }
00198
00199 bool ok = mFormat->checkFormat( &file );
00200 file.close();
00201
00202 return ok;
00203 }
00204 }
00205
00206 void ResourceFile::doClose()
00207 {
00208 }
00209
00210 bool ResourceFile::load()
00211 {
00212 kdDebug(5700) << "ResourceFile::load(): '" << mFileName << "'" << endl;
00213
00214 mAsynchronous = false;
00215
00216 QFile file( mFileName );
00217 if ( !file.open( IO_ReadOnly ) ) {
00218 addressBook()->error( i18n( "Unable to open file '%1'." ).arg( mFileName ) );
00219 return false;
00220 }
00221
00222 clear();
00223
00224 return mFormat->loadAll( addressBook(), this, &file );
00225 }
00226
00227 bool ResourceFile::asyncLoad()
00228 {
00229 kdDebug(5700) << "ResourceFile::asyncLoad()" << endl;
00230
00231 mAsynchronous = true;
00232
00233 bool ok = load();
00234
00235 if ( !ok )
00236 emitLoadingError();
00237 else
00238 emitLoadingFinished();
00239
00240 return true;
00241 }
00242
00243 bool ResourceFile::save( Ticket * )
00244 {
00245 kdDebug(5700) << "ResourceFile::save()" << endl;
00246
00247
00248 QFile file( mFileName + "__0" );
00249 if ( file.size() != 0 ) {
00250 const QString last = mFileName + "__20";
00251 kdDebug() << "deleting " << last << endl;
00252
00253 QFile::remove( last );
00254
00255 for (int i=19; i>=0; i--)
00256 {
00257 const QString src = mFileName + "__" + QString::number(i);
00258 const QString dest = mFileName + "__" + QString::number(i+1);
00259 kdDebug() << "moving " << src << " -> " << dest << endl;
00260
00261
00262 QFile in( src );
00263 if ( in.open( IO_ReadOnly ) ) {
00264 const QByteArray data = in.readAll();
00265
00266 QFile out( dest );
00267 if ( out.open( IO_WriteOnly ) ) {
00268 out.writeBlock( data );
00269 out.close();
00270 }
00271
00272 in.close();
00273 }
00274
00275
00276 QFile::remove( src );
00277 }
00278 } else
00279 kdDebug() << "Not starting logrotate __0 is 0 bytes." << endl;
00280
00281 QString extension = "__0";
00282 (void) KSaveFile::backupFile( mFileName, QString::null ,
00283 extension );
00284
00285 mDirWatch.stopScan();
00286
00287 KSaveFile saveFile( mFileName );
00288 bool ok = false;
00289
00290 if ( saveFile.status() == 0 && saveFile.file() ) {
00291 mFormat->saveAll( addressBook(), this, saveFile.file() );
00292 ok = saveFile.close();
00293 }
00294
00295 if ( !ok ) {
00296 saveFile.abort();
00297 addressBook()->error( i18n( "Unable to save file '%1'." ).arg( mFileName ) );
00298 }
00299
00300 mDirWatch.startScan();
00301
00302 return ok;
00303 }
00304
00305 bool ResourceFile::asyncSave( Ticket *ticket )
00306 {
00307 kdDebug(5700) << "ResourceFile::asyncSave()" << endl;
00308
00309 bool ok = save( ticket );
00310
00311 if ( !ok )
00312 QTimer::singleShot( 0, this, SLOT( emitSavingError() ) );
00313 else
00314 QTimer::singleShot( 0, this, SLOT( emitSavingFinished() ) );
00315
00316 return ok;
00317 }
00318
00319 void ResourceFile::setFileName( const QString &fileName )
00320 {
00321 mDirWatch.stopScan();
00322 if ( mDirWatch.contains( mFileName ) )
00323 mDirWatch.removeFile( mFileName );
00324
00325 mFileName = fileName;
00326
00327 mDirWatch.addFile( mFileName );
00328 mDirWatch.startScan();
00329 }
00330
00331 QString ResourceFile::fileName() const
00332 {
00333 return mFileName;
00334 }
00335
00336 void ResourceFile::setFormat( const QString &format )
00337 {
00338 mFormatName = format;
00339 delete mFormat;
00340
00341 FormatFactory *factory = FormatFactory::self();
00342 mFormat = factory->format( mFormatName );
00343 }
00344
00345 QString ResourceFile::format() const
00346 {
00347 return mFormatName;
00348 }
00349
00350 void ResourceFile::fileChanged()
00351 {
00352 kdDebug(5700) << "ResourceFile::fileChanged(): " << mFileName << endl;
00353
00354 if ( !addressBook() )
00355 return;
00356
00357 if ( mAsynchronous )
00358 asyncLoad();
00359 else {
00360 load();
00361 kdDebug() << "addressBookChanged() " << endl;
00362 addressBook()->emitAddressBookChanged();
00363 }
00364 }
00365
00366 void ResourceFile::removeAddressee( const Addressee &addr )
00367 {
00368 QFile::remove( QFile::encodeName( locateLocal( "data", "kabc/photos/" ) + addr.uid() ) );
00369 QFile::remove( QFile::encodeName( locateLocal( "data", "kabc/logos/" ) + addr.uid() ) );
00370 QFile::remove( QFile::encodeName( locateLocal( "data", "kabc/sounds/" ) + addr.uid() ) );
00371
00372 mAddrMap.erase( addr.uid() );
00373 }
00374
00375 void ResourceFile::emitSavingFinished()
00376 {
00377 emit savingFinished( this );
00378 }
00379
00380 void ResourceFile::emitSavingError()
00381 {
00382 emit savingError( this, i18n( "Unable to save file '%1'." ).arg( mFileName ) );
00383 }
00384
00385 void ResourceFile::emitLoadingFinished()
00386 {
00387 emit loadingFinished( this );
00388 }
00389
00390 void ResourceFile::emitLoadingError()
00391 {
00392 emit loadingError( this, i18n( "Problems during parsing file '%1'." ).arg( mFileName ) );
00393 }
00394
00395 #include "resourcefile.moc"
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