From b194477e732db4f5a59c70114777d507068658c1 Mon Sep 17 00:00:00 2001
From: Eric H Kinzie <ekinzie@labn.net>
Date: Wed, 23 Jun 2021 11:43:05 -0400
Subject: [PATCH] Swagger-Plugin: fix json output for single top resource

The JSON output has an extraneous comma if the --swagger-top-resource
option was provided with a value of either "root" or "operations".

Check that more output is to follow before writing a comma.
---
 plugins/yanger_swagger.erl | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/plugins/yanger_swagger.erl b/plugins/yanger_swagger.erl
index 437b655..6c75496 100644
--- a/plugins/yanger_swagger.erl
+++ b/plugins/yanger_swagger.erl
@@ -411,7 +411,9 @@ emit_tree(Ctx, [Mod|Mods], AllMods, Fd, Opts) ->
                               [delimiter_nl((MatchVer orelse
                                              HasDataNode orelse MatchData)
                                             andalso
-                                            (MatchOp orelse HasOpNode))]);
+                                            (MatchOp orelse HasOpNode)
+                                            andalso
+                                            (Opts#options.top_resource == all))]);
                true ->
                     skip
             end,
@@ -424,7 +426,9 @@ emit_tree(Ctx, [Mod|Mods], AllMods, Fd, Opts) ->
                                    'yang-library-version', Opts),
                     io:format(Fd, "~s",
                               [delimiter_nl((HasDataNode orelse MatchData)
-                                            andalso MatchVer)]);
+                                            andalso MatchVer
+                                            andalso
+                                            (Opts#options.top_resource == all))]);
                true ->
                     skip
             end,