File 0002-lua-json-add-method-to-merge-json-containe... of Package wireplumber

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File 0002-lua-json-add-method-to-merge-json-containers.patch of Package wireplumber

From fd7a1af7ffec4be04348b4807a4a8f95777e2515 Mon Sep 17 00:00:00 2001
From: Stefan Ursella <stefan.ursella@wolfvision.net>
Date: Fri, 26 Apr 2024 07:26:52 +0200
Subject: [PATCH] lua: json: add method to merge json containers

---
 modules/module-lua-scripting/api/json.c | 15 +++++++++++++++
 tests/wplua/scripts/json.lua            | 23 +++++++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/modules/module-lua-scripting/api/json.c b/modules/module-lua-scripting/api/json.c
index 39f6b10f0..242f0e410 100644
--- a/modules/module-lua-scripting/api/json.c
+++ b/modules/module-lua-scripting/api/json.c
@@ -167,6 +167,20 @@ push_luajson (lua_State *L, WpSpaJson *json, gint n_recursions)
   }
 }
 
+static int
+spa_json_merge (lua_State *L)
+{
+  WpSpaJson *a = wplua_checkboxed (L, 1, WP_TYPE_SPA_JSON);
+  WpSpaJson *b = wplua_checkboxed (L, 2, WP_TYPE_SPA_JSON);
+
+  WpSpaJson *merge =  wp_json_utils_merge_containers(a, b);
+  if(!merge)
+    luaL_error (L, "only Json container merge supported");
+
+  wplua_pushboxed (L, WP_TYPE_SPA_JSON, merge);
+  return 1;
+}
+
 static int
 spa_json_parse (lua_State *L)
 {
@@ -340,6 +354,7 @@ static const luaL_Reg spa_json_methods[] = {
   { "is_array", spa_json_is_array },
   { "is_object", spa_json_is_object },
   { "parse", spa_json_parse },
+  { "merge", spa_json_merge },
   { NULL, NULL }
 };
 
diff --git a/tests/wplua/scripts/json.lua b/tests/wplua/scripts/json.lua
index 52a8a3823..03e14ba6d 100644
--- a/tests/wplua/scripts/json.lua
+++ b/tests/wplua/scripts/json.lua
@@ -240,3 +240,26 @@ assert (type (val.args) == "table")
 assert (type (val.args.test) == "table")
 assert (val.args.test[1] == 0)
 assert (val.args.test[2] == 1)
+
+json = Json.Array { "foo" }
+json2 = Json.Array { "bar" }
+json = json:merge(json2)
+assert (json:is_array())
+val = json:parse ()
+assert (val[1] == "foo")
+assert (val[2] == "bar")
+
+table = {}
+table["1"] = 1
+table["2"] = 2
+json = Json.Object (table)
+table = {}
+table["3"] = 3
+table["4"] = 4
+json2 = Json.Object (table)
+json = json:merge(json2)
+val = json:parse ()
+assert (val["1"] == 1)
+assert (val["2"] == 2)
+assert (val["3"] == 3)
+assert (val["4"] == 4)
-- 
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