+ // Parse the list of current files on stdin
+ file_set current;
+ populate_set( cin, current );
+
+ file_set backed_up;
+ ifstream db( "test.db" );
+ populate_set( db, backed_up);
+
+ // Now divide the two sets into three sets (added, deleted and common )
+ file_set added, deleted, common;
+ partition_sets( current, backed_up, added, common, deleted );
+
+ { // This little block will copy the last_backup_date from the second set to the first
+ FileDataNameCmp cmp;
+
+ 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 = common.begin(), j = updated_mirror.begin();
+ for( ; i != common.end(); ++i, ++j ) {
+ (*i)->setLastBackupDate( (*j)->getLastBackupDate() );
+ }
+ }
+
+ // Now find the list of files to backup.
+ file_set backup_set;
+
+ // backup all added files
+ copy( added.begin(), added.end(), inserter( backup_set, backup_set.begin() ) );
+
+ // backup common files that have changed since the last backup date.
+ for( file_set::iterator i = common.begin(); i != common.end(); ++i ) {
+ if( (*i)->getLastBackupDate() < (*i)->getModifiedDate() ) {
+ backup_set.insert( *i );
+ }
+ }
+
+ // 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;
+
+ bool complete = true;
+
+ // 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 );
+ } else {
+ // We missed a file that should be included so the backup is not complete
+ complete = false;