From fb5ab45489847c62e79b4f8498c33514e729abe3 Mon Sep 17 00:00:00 2001
From: Viktor Tsymbalyuk <Viktor.Tsymbalyuk@gmail.com>
Date: Thu, 14 Feb 2019 16:44:06 +0200
Subject: [PATCH] correction according Codacy Bot recomendations

---
 ascii85.go |  4 ++--
 read.go    | 11 ++++++-----
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/ascii85.go b/ascii85.go
index 0710b3f..1baed56 100644
--- a/ascii85.go
+++ b/ascii85.go
@@ -16,7 +16,7 @@ func newAlphaReader(reader io.Reader) *alphaReader {
 	return &alphaReader{reader: reader}
 }
 
-func checkAscii85(r byte) byte {
+func checkASCII85(r byte) byte {
 	if r >= '!' && r <= 'u' { // 33 <= ascii85 <=117
 		return r
 	}
@@ -36,7 +36,7 @@ func (a *alphaReader) Read(p []byte) (int, error) {
 	buf := make([]byte, n)
 	tilda := false
 	for i := 0; i < n; i++ {
-		char := checkAscii85(p[i])
+		char := checkASCII85(p[i])
 		if char == '>' && tilda { // end of data
 			break
 		}
diff --git a/read.go b/read.go
index 7dbe303..2cc4137 100644
--- a/read.go
+++ b/read.go
@@ -842,14 +842,15 @@ func applyFilter(rd io.Reader, name string, param Value) io.Reader {
 			return &pngUpReader{r: zr, hist: make([]byte, 1+columns), tmp: make([]byte, 1+columns)}
 		}
 	case "ASCII85Decode":
-		cleanAscii85 := newAlphaReader(rd)
-		decoder := ascii85.NewDecoder(cleanAscii85)
+		cleanASCII85 := newAlphaReader(rd)
+		decoder := ascii85.NewDecoder(cleanASCII85)
 
-		if param.Keys() == nil {
-			return decoder
-		} else {
+		switch param.Keys() {
+		default:
 			fmt.Println("param=", param)
 			panic("not expected DecodeParms for ascii85")
+		case nil:
+			return decoder
 		}
 	}
 }