commit a932033d6be58e6d8bee9e48bb5dee204758bb09
author Nigel Tao <nigeltao@golang.org> Thu Aug 08 12:36:00 2019 +1000
committer Nigel Tao <nigeltao@golang.org> Thu Aug 08 12:37:07 2019 +1000
tree 74ba01bf6f7b051141aa7abd3c48d3ab8d0f805a
parent 05267a2edca6284ddfcfbc933a0f2440405a050e

Improve error msg for no matching rac.CodecReader

lib/rac/reader.go

diff --git a/lib/rac/reader.go b/lib/rac/reader.go
index 0a3739c..6060702 100644
--- a/lib/rac/reader.go
+++ b/lib/rac/reader.go
@@ -310,7 +310,16 @@
 		}
 	}
 	if codecReader == nil {
-		r.err = fmt.Errorf("rac: no matching CodecReader for Codec 0x%02X", chunk.Codec)
+		name := ""
+		switch chunk.Codec {
+		case CodecZlib:
+			name = " (Zlib)"
+		case CodecBrotli:
+			name = " (Brotli)"
+		case CodecZstandard:
+			name = " (Zstandard)"
+		}
+		r.err = fmt.Errorf("rac: no matching CodecReader for Codec 0x%02X%s", chunk.Codec, name)
 		return r.err
 	}