+
+ // Now, sort the backup_set by filesize and build a list of up to SIZE
+ file_vector backups_bysize;
+ copy( backup_set.begin(), backup_set.end(), back_inserter( backups_bysize ) );
+ FileDataSizeCmp sizecmp;
+ sort( backups_bysize.begin(), backups_bysize.end(), sizecmp );
+
+ file_set final_set;
+ unsigned long long bytes_available = 4700000000ULL; // 4.3 GBytes
+
+ unsigned long long block_size = 512ULL;
+
+ // Copy files over until full or out of files
+ file_vector::reverse_iterator i = backups_bysize.rbegin();
+ while( 0 != bytes_available && i != backups_bysize.rend() ) {
+ unsigned long long size = (*i)->getFileSize();
+ unsigned long long blocks = size & ( ~(block_size-1) );
+ if( blocks < size ) blocks += block_size;
+ if( blocks <= bytes_available ) {
+ bytes_available -= blocks;
+ final_set.insert( *i );
+ }
+ ++i;
+ }
+
+ // Now, sort the non-backed-up list by last_backup_date and back-fill
+ if( 0 != bytes_available ) {
+ file_vector leftovers;
+ set_difference( current.begin(), current.end(),
+ final_set.begin(), final_set.end(),
+ back_inserter( leftovers ),
+ cmp );
+
+ FileDataLastBackupCmp lastbackupcmp;
+ sort( leftovers.begin(), leftovers.end(), lastbackupcmp );
+
+ // Copy files over until full or out of files
+ file_vector::const_iterator j = leftovers.begin();
+ while( 0 != bytes_available && j != leftovers.end() ) {
+ unsigned long long size = (*j)->getFileSize();
+ unsigned long long blocks = size & ( ~(block_size-1) );
+
+ if( blocks < size ) blocks += block_size;
+
+ if( blocks <= bytes_available ) {
+ bytes_available -= blocks;
+ final_set.insert( *j );
+ }
+ ++j;
+ }
+ }
+
+ unsigned long long now = 20051019211200ULL;
+ for( file_set::iterator k = final_set.begin(); k != final_set.end(); ++k ) {
+ (*k)->setLastBackupDate( now );
+ }
+
+ // Clean out the database
+ rc = sqlite3_exec( db, "delete from filedata;", NULL, NULL, &sqliteErrMsg );
+ assert( SQLITE_OK == rc );
+ rc = sqlite3_exec( db, "vacuum;", NULL, NULL, &sqliteErrMsg );
+ assert( SQLITE_OK == rc );
+
+ // Clean-up
+ for( file_set::iterator i = backed_up.begin(); i != backed_up.end(); ++i ) { delete *i; }
+ for( file_set::iterator i = current.begin(); i != current.end(); ++i ) { delete *i; }