fixing #18

cmd/index.go

@@ -144,13 +144,6 @@ func indexParamCheck() error {
 
 		// check accessibility
 		misc.ErrorCheck(misc.CheckFile(msa))
-		if fh, err := os.Stat(*msaDir); err != nil {
-			return err
-
-			// skip empty files
-		} else if fh.Size() == 0 {
-			continue
-		}
 
 		// add to the pile
 		msaList = append(msaList, msa)

src/misc/misc.go

@@ -90,12 +90,16 @@ func CheckDir(dir string) error {
 
 // CheckFile is a function to check that a file can be read
 func CheckFile(file string) error {
-	if _, err := os.Stat(file); err != nil {
+	fi, err := os.Stat(file)
+	if err != nil {
 		if os.IsNotExist(err) {
 			return fmt.Errorf("file does not exist: %v", file)
 		}
 		return fmt.Errorf("can't access file (check permissions): %v", file)
 	}
+	if fi.Size() == 0 {
+		return fmt.Errorf("file appears to be empty: %v", file)
+	}
 	return nil
 }