When writing library, write tags too.

[lightning.git] / taglib.go

diff --git a/taglib.go b/taglib.go
index 3dc45b80c08d67772cd4d6930fecf052bc44fce9..f92a91f375560014a9b768a2b37450518505528b 100644 (file)
--- a/taglib.go
+++ b/taglib.go
@@ -117,3 +117,17 @@ func (taglib *tagLibrary) setTags(tags [][]byte) error {
        }
        return nil
 }
+
+func (taglib *tagLibrary) Tags() [][]byte {
+       out := make([][]byte, len(taglib.tagmap))
+       untwobit := []byte{'a', 'c', 'g', 't'}
+       for key, info := range taglib.tagmap {
+               seq := make([]byte, taglib.keylen)
+               for i := len(seq) - 1; i >= 0; i-- {
+                       seq[i] = untwobit[int(key)&3]
+                       key = key >> 2
+               }
+               out[int(info.id)] = seq
+       }
+       return out
+}