From 0b5b32b026291d5bd8e47acebca10259a379fc1c Mon Sep 17 00:00:00 2001
From: rubenwardy <rw@rubenwardy.com>
Date: Mon, 30 Apr 2018 17:42:51 +0100
Subject: MetaDataRef: Add contains() and get() (#7214)

---
 src/script/lua_api/l_itemstackmeta.cpp |  2 ++
 src/script/lua_api/l_metadata.cpp      | 36 ++++++++++++++++++++++++++++++++++
 src/script/lua_api/l_metadata.h        |  6 ++++++
 src/script/lua_api/l_nodemeta.cpp      |  4 ++++
 src/script/lua_api/l_playermeta.cpp    |  2 ++
 src/script/lua_api/l_storage.cpp       |  2 ++
 6 files changed, 52 insertions(+)

(limited to 'src')

diff --git a/src/script/lua_api/l_itemstackmeta.cpp b/src/script/lua_api/l_itemstackmeta.cpp
index 0661ec25d..07ab86499 100644
--- a/src/script/lua_api/l_itemstackmeta.cpp
+++ b/src/script/lua_api/l_itemstackmeta.cpp
@@ -123,6 +123,8 @@ void ItemStackMetaRef::Register(lua_State *L)
 
 const char ItemStackMetaRef::className[] = "ItemStackMetaRef";
 const luaL_Reg ItemStackMetaRef::methods[] = {
+	luamethod(MetaDataRef, contains),
+	luamethod(MetaDataRef, get),
 	luamethod(MetaDataRef, get_string),
 	luamethod(MetaDataRef, set_string),
 	luamethod(MetaDataRef, get_int),
diff --git a/src/script/lua_api/l_metadata.cpp b/src/script/lua_api/l_metadata.cpp
index 69f495c4a..3901ac2cf 100644
--- a/src/script/lua_api/l_metadata.cpp
+++ b/src/script/lua_api/l_metadata.cpp
@@ -51,6 +51,42 @@ MetaDataRef* MetaDataRef::checkobject(lua_State *L, int narg)
 
 // Exported functions
 
+// contains(self, name)
+int MetaDataRef::l_contains(lua_State *L)
+{
+	MAP_LOCK_REQUIRED;
+
+	MetaDataRef *ref = checkobject(L, 1);
+	std::string name = luaL_checkstring(L, 2);
+
+	Metadata *meta = ref->getmeta(false);
+	if (meta == NULL)
+		return 0;
+
+	lua_pushboolean(L, meta->contains(name));
+	return 1;
+}
+
+// get(self, name)
+int MetaDataRef::l_get(lua_State *L)
+{
+	MAP_LOCK_REQUIRED;
+
+	MetaDataRef *ref = checkobject(L, 1);
+	std::string name = luaL_checkstring(L, 2);
+
+	Metadata *meta = ref->getmeta(false);
+	if (meta == NULL)
+		return 0;
+
+	std::string str;
+	if (meta->getStringToRef(name, str)) {
+		lua_pushlstring(L, str.c_str(), str.size());
+		return 1;
+	}
+	return 0;
+}
+
 // get_string(self, name)
 int MetaDataRef::l_get_string(lua_State *L)
 {
diff --git a/src/script/lua_api/l_metadata.h b/src/script/lua_api/l_metadata.h
index 3aaf62d4a..cee38ed45 100644
--- a/src/script/lua_api/l_metadata.h
+++ b/src/script/lua_api/l_metadata.h
@@ -46,6 +46,12 @@ protected:
 
 	// Exported functions
 
+	// contains(self, name)
+	static int l_contains(lua_State *L);
+
+	// get(self, name)
+	static int l_get(lua_State *L);
+
 	// get_string(self, name)
 	static int l_get_string(lua_State *L);
 
diff --git a/src/script/lua_api/l_nodemeta.cpp b/src/script/lua_api/l_nodemeta.cpp
index 348d73ad5..f390664a4 100644
--- a/src/script/lua_api/l_nodemeta.cpp
+++ b/src/script/lua_api/l_nodemeta.cpp
@@ -242,6 +242,8 @@ void NodeMetaRef::Register(lua_State *L)
 
 
 const luaL_Reg NodeMetaRef::methodsServer[] = {
+	luamethod(MetaDataRef, contains),
+	luamethod(MetaDataRef, get),
 	luamethod(MetaDataRef, get_string),
 	luamethod(MetaDataRef, set_string),
 	luamethod(MetaDataRef, get_int),
@@ -266,6 +268,8 @@ void NodeMetaRef::RegisterClient(lua_State *L)
 
 
 const luaL_Reg NodeMetaRef::methodsClient[] = {
+	luamethod(MetaDataRef, contains),
+	luamethod(MetaDataRef, get),
 	luamethod(MetaDataRef, get_string),
 	luamethod(MetaDataRef, get_int),
 	luamethod(MetaDataRef, get_float),
diff --git a/src/script/lua_api/l_playermeta.cpp b/src/script/lua_api/l_playermeta.cpp
index b8f6aabb7..e690f6bd0 100644
--- a/src/script/lua_api/l_playermeta.cpp
+++ b/src/script/lua_api/l_playermeta.cpp
@@ -107,6 +107,8 @@ void PlayerMetaRef::Register(lua_State *L)
 // clang-format off
 const char PlayerMetaRef::className[] = "PlayerMetaRef";
 const luaL_Reg PlayerMetaRef::methods[] = {
+	luamethod(MetaDataRef, contains),
+	luamethod(MetaDataRef, get),
 	luamethod(MetaDataRef, get_string),
 	luamethod(MetaDataRef, set_string),
 	luamethod(MetaDataRef, get_int),
diff --git a/src/script/lua_api/l_storage.cpp b/src/script/lua_api/l_storage.cpp
index 01810ca8b..280ec7266 100644
--- a/src/script/lua_api/l_storage.cpp
+++ b/src/script/lua_api/l_storage.cpp
@@ -134,6 +134,8 @@ void StorageRef::clearMeta()
 
 const char StorageRef::className[] = "StorageRef";
 const luaL_Reg StorageRef::methods[] = {
+	luamethod(MetaDataRef, contains),
+	luamethod(MetaDataRef, get),
 	luamethod(MetaDataRef, get_string),
 	luamethod(MetaDataRef, set_string),
 	luamethod(MetaDataRef, get_int),
-- 
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