[Minor] Lua_logger: Fix printing of sparse tables

diff --git a/src/lua/lua_logger.c b/src/lua/lua_logger.c
index f76db8877c1a2c96b8a3d2ddab511d8a5e4b21da..7902babb88c4d7d4bd415422edc9a437618197d7 100644 (file)
--- a/src/lua/lua_logger.c
+++ b/src/lua/lua_logger.c
@@ -463,7 +463,7 @@ lua_logger_out_table (lua_State *L, gint pos, gchar *outbuf, gsize len,
        gsize remain = len, r;
        gboolean first = TRUE;
        gconstpointer self = NULL;
-       gint i, tpos;
+       gint i, tpos, last_seq = -1;
 
        if (!lua_istable (L, pos) || remain == 0) {
                return 0;
@@ -498,6 +498,8 @@ lua_logger_out_table (lua_State *L, gint pos, gchar *outbuf, gsize len,
                        break;
                }
 
+               last_seq = i;
+
                if (!first) {
                        r = rspamd_snprintf (d, remain + 1, ", ");
                        MOVE_BUF(d, remain, r);
@@ -524,7 +526,17 @@ lua_logger_out_table (lua_State *L, gint pos, gchar *outbuf, gsize len,
                /* 'key' is at index -2 and 'value' is at index -1 */
 
                if (lua_type (L, -2) == LUA_TNUMBER) {
-                       continue;
+                       if (last_seq > 0) {
+                               lua_pushvalue (L, -2);
+
+                               if (lua_tonumber (L, -1) <= last_seq + 1) {
+                                       lua_pop (L, 1);
+                                       /* Already seen */
+                                       continue;
+                               }
+
+                               lua_pop (L, 1);
+                       }
                }
 
                if (!first) {
@@ -532,8 +544,11 @@ lua_logger_out_table (lua_State *L, gint pos, gchar *outbuf, gsize len,
                        MOVE_BUF(d, remain, r);
                }
 
+               /* Preserve key */
+               lua_pushvalue (L, -2);
                r = rspamd_snprintf (d, remain + 1, "[%s] = ",
-                               lua_tostring (L, -2));
+                               lua_tostring (L, -1));
+               lua_pop (L, 1); /* Remove key */
                MOVE_BUF(d, remain, r);
                tpos = lua_gettop (L);