Return an error if page average calculation cant be done with hocr

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/hocr/hocr.go b/lib/hocr/hocr.go
index bfc6a98..dcd0494 100644
--- a/lib/hocr/hocr.go
+++ b/lib/hocr/hocr.go
@@ -2,6 +2,7 @@ package hocr
 
 import (
 	"encoding/xml"
+	"errors"
 	"io/ioutil"
 	"regexp"
 	"strconv"
@@ -121,5 +122,8 @@ func GetAvgConf(hocrfn string) (float64, error) {
 			num++
 		}
 	}
+	if num == 0 {
+		return 0, errors.New("No words found")
+	}
 	return total / num, nil
 }