Add `minetest.colorspec_to_colorstring` (#10425)

2 files changed, 25 insertions, 2 deletions

diff --git a/src/script/lua_api/l_util.cpp b/src/script/lua_api/l_util.cpp
index 203a0dd28..8de2d67c8 100644
--- a/src/script/lua_api/l_util.cpp
+++ b/src/script/lua_api/l_util.cpp
@@ -17,6 +17,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
+#include "irrlichttypes_extrabloated.h"
 #include "lua_api/l_util.h"
 #include "lua_api/l_internal.h"
 #include "lua_api/l_settings.h"
@@ -40,7 +41,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "util/hex.h"
 #include "util/sha1.h"
 #include <algorithm>
-
+#include <cstdio>
 
 // log([level,] text)
 // Writes a line to the logger.
@@ -479,6 +480,23 @@ int ModApiUtil::l_sha1(lua_State *L)
 	return 1;
 }
 
+// colorspec_to_colorstring(colorspec)
+int ModApiUtil::l_colorspec_to_colorstring(lua_State *L)
+{
+	NO_MAP_LOCK_REQUIRED;
+
+	video::SColor color(0);
+	if (read_color(L, 1, &color)) {
+		char colorstring[10];
+		snprintf(colorstring, 10, "#%02X%02X%02X%02X",
+			color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha());
+		lua_pushstring(L, colorstring);
+		return 1;
+	}
+
+	return 0;
+}
+
 void ModApiUtil::Initialize(lua_State *L, int top)
 {
 	API_FCT(log);
@@ -513,6 +531,7 @@ void ModApiUtil::Initialize(lua_State *L, int top)
 
 	API_FCT(get_version);
 	API_FCT(sha1);
+	API_FCT(colorspec_to_colorstring);
 
 	LuaSettings::create(L, g_settings, g_settings_path);
 	lua_setfield(L, top, "settings");
@@ -537,6 +556,7 @@ void ModApiUtil::InitializeClient(lua_State *L, int top)
 
 	API_FCT(get_version);
 	API_FCT(sha1);
+	API_FCT(colorspec_to_colorstring);
 }
 
 void ModApiUtil::InitializeAsync(lua_State *L, int top)
@@ -564,8 +584,8 @@ void ModApiUtil::InitializeAsync(lua_State *L, int top)
 
 	API_FCT(get_version);
 	API_FCT(sha1);
+	API_FCT(colorspec_to_colorstring);
 
 	LuaSettings::create(L, g_settings, g_settings_path);
 	lua_setfield(L, top, "settings");
 }
-
diff --git a/src/script/lua_api/l_util.h b/src/script/lua_api/l_util.h
index dbdd62b99..6943a6afb 100644
--- a/src/script/lua_api/l_util.h
+++ b/src/script/lua_api/l_util.h
@@ -101,6 +101,9 @@ private:
 	// sha1(string, raw)
 	static int l_sha1(lua_State *L);
 
+	// colorspec_to_colorstring(colorspec)
+	static int l_colorspec_to_colorstring(lua_State *L);
+
 public:
 	static void Initialize(lua_State *L, int top);
 	static void InitializeAsync(lua_State *L, int top);