tpl/transform: Add transform.Unmarshal func

Fixes #5428

2 files changed, 5 insertions, 6 deletions

diff --git a/helpers/general.go b/helpers/general.go
index cfabab5a9..00caf1ecc 100644
--- a/helpers/general.go
+++ b/helpers/general.go
@@ -394,11 +394,10 @@ func MD5FromFileFast(r io.ReadSeeker) (string, error) {
 	return hex.EncodeToString(h.Sum(nil)), nil
 }
 
-// MD5FromFile creates a MD5 hash from the given file.
-// It will not close the file.
-func MD5FromFile(f afero.File) (string, error) {
+// MD5FromReader creates a MD5 hash from the given reader.
+func MD5FromReader(r io.Reader) (string, error) {
 	h := md5.New()
-	if _, err := io.Copy(h, f); err != nil {
+	if _, err := io.Copy(h, r); err != nil {
 		return "", nil
 	}
 	return hex.EncodeToString(h.Sum(nil)), nil
diff --git a/helpers/general_test.go b/helpers/general_test.go
index 08fe4890e..1279df439 100644
--- a/helpers/general_test.go
+++ b/helpers/general_test.go
@@ -272,7 +272,7 @@ func TestFastMD5FromFile(t *testing.T) {
 	req.NoError(err)
 	req.NotEqual(m3, m4)
 
-	m5, err := MD5FromFile(bf2)
+	m5, err := MD5FromReader(bf2)
 	req.NoError(err)
 	req.NotEqual(m4, m5)
 }
@@ -293,7 +293,7 @@ func BenchmarkMD5FromFileFast(b *testing.B) {
 				}
 				b.StartTimer()
 				if full {
-					if _, err := MD5FromFile(f); err != nil {
+					if _, err := MD5FromReader(f); err != nil {
 						b.Fatal(err)
 					}
 				} else {