+ int rc = sqlite3_open( dbname, &db );
+ assert( SQLITE_OK == rc );
+
+ char *sqliteErrMsg = 0;
+ file_set backed_up;
+ rc = sqlite3_exec( db, "select * from filedata;", populate_set, &backed_up, &sqliteErrMsg );
+ assert( SQLITE_OK == rc );
+
+ rc = sqlite3_close( db );
+ assert( SQLITE_OK == rc );
+
+ // Now divide the two sets into three sets (new, deleted and updated )
+ FileDataNameCmp cmp;
+
+ file_set added;
+ set_difference( current.begin(), current.end(),
+ backed_up.begin(), backed_up.end(),
+ inserter( added, added.begin() ),
+ cmp );
+
+ file_set deleted;
+ set_difference( backed_up.begin(), backed_up.end(),
+ current.begin(), current.end(),
+ inserter( deleted, deleted.begin() ),
+ cmp );
+
+ file_set updated;
+ set_union( current.begin(), current.end(),
+ backed_up.begin(), backed_up.end(),
+ inserter( updated, updated.begin() ),
+ cmp );
+
+ { // This little block will copy the last_backup_date from the second set to the first
+ file_set updated_mirror;
+ set_union( current.begin(), current.end(),
+ backed_up.begin(), backed_up.end(),
+ inserter( updated_mirror, updated_mirror.begin() ),
+ cmp );
+
+ // TODO Now we need to copy the last_backup_date from
+ file_set::iterator i = updated.begin(), j = updated_mirror.begin();
+ for( ; i != updated.end(); ++i, ++j ) {
+ (*i)->setLastBackupDate( (*j)->getLastBackupDate() );
+ }
+ }
+
+ // Now find the list of files to backup.
+ file_set backup_set;
+
+ // backup all new files
+ copy( added.begin(), added.end(), inserter( backup_set, backup_set.begin() ) );
+
+ // backup already backed-up files that have changed since the last backup date.
+ for( file_set::iterator i = updated.begin(); i != updated.end(); ++i ) {
+ if( (*i)->getLastBackupDate() < (*i)->getModifiedDate() ) {
+ backup_set.insert( *i );
+ }