emoji: more of a draft of a convention

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

emoji/map.go

@@ -1,9 +1,25 @@
-//go:generate go run map_json.go
+//go:generate go run map_json.go -in ./emojimap.json -out ./map_gen.go
 
 package emoji
 
 // Map returns the emoji at the provided position.
 // This list is from 0-255
 func Map(b byte) string {
-	return sumList[int(b)]
+	return mapGen.EmojiWords[int(b)]
+}
+
+// Version returns the version of the emojisum document currently compiled
+// against
+func Version() string {
+	return mapGen.Version
+}
+
+var mapGen VersionedMap
+
+// VersionedMap is the structure used for the `emojimap.json` document
+type VersionedMap struct {
+	Description string `json:"description"`
+	Version     string `json:"version"`
+	// these are an ordered list, referened by a byte (each byte of a checksum digest)
+	EmojiWords []string `json:"emojiwords"`
 }