feat: detect local artists, rgs and releases

src/awk/releasegroups.awk

@@ -1,5 +1,11 @@
-BEGIN { OFS="\t" }
-
+BEGIN { 
+  OFS="\t"
+  local_releasegroups[0] = 0
+  delete local_releasegroups[0]
+  while ((getline < file_local_releasegroups) == 1) 
+    local_releasegroups[$1] = 1
+  close(file_local_releasegroups)
+}
 {
   line_type=""
   line_sectype=""
@@ -11,7 +17,9 @@ BEGIN { OFS="\t" }
   year = substr($4, 1, 4) + 0
   title = $5
   artistcredit = $6
-  line_release = artist==artistcredit ? format_release : format_release_w_artist
+  line_release = artist == artistcredit ? format_release : format_release_w_artist
+  if (local_releasegroups[$1])
+    line_release = format_local line_release
   switch (type) {
     case "Single": line_type=format_single; break
     case "Album": line_type=format_album; break