Add an -enum-only option to the backup command to enumerate the repository only

src/duplicacy_backupmanager.go

@@ -163,7 +163,7 @@ func setEntryContent(entries []*Entry, chunkLengths []int, offset int) {
 // unmodified files with last backup).  Otherwise (or if this is the first backup), the entire repository will
 // be scanned to create the snapshot.  'tag' is the tag assigned to the new snapshot.
 func (manager *BackupManager) Backup(top string, quickMode bool, threads int, tag string,
-	showStatistics bool, shadowCopy bool, shadowCopyTimeout int) bool {
+	showStatistics bool, shadowCopy bool, shadowCopyTimeout int, enumOnly bool) bool {
 
 	var err error
 	top, err = filepath.Abs(top)
@@ -194,6 +194,10 @@ func (manager *BackupManager) Backup(top string, quickMode bool, threads int, ta
 		return false
 	}
 
+	if enumOnly {
+		return true
+	}
+
 	// This cache contains all chunks referenced by last snasphot. Any other chunks will lead to a call to
 	// UploadChunk.
 	chunkCache := make(map[string]bool)
@@ -771,10 +775,7 @@ func (manager *BackupManager) Restore(top string, revision int, inPlace bool, qu
 		for _, file := range remoteSnapshot.Files {
 
 			if MatchPath(file.Path, patterns) {
-				LOG_TRACE("RESTORE_INCLUDE", "Include %s", file.Path)
 				includedFiles = append(includedFiles, file)
-			} else {
-				LOG_TRACE("RESTORE_EXCLUDE", "Exclude %s", file.Path)
 			}
 		}