From 63eadaf83c53699490d025fcc16b15622d334c76 Mon Sep 17 00:00:00 2001
From: Latapostrophe <hyperclassic3@gmail.com>
Date: Tue, 10 Mar 2020 18:12:20 +0100
Subject: [PATCH] Expose CV_FindVar to Lua

---
 src/command.c        |  4 ++--
 src/command.h        |  3 +++
 src/lua_consolelib.c | 25 +++++++++++++++++++++++++
 3 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/src/command.c b/src/command.c
index 6d9c86d3..dff83c2c 100644
--- a/src/command.c
+++ b/src/command.c
@@ -56,7 +56,7 @@ static void CV_EnforceExecVersion(void);
 static boolean CV_FilterVarByVersion(consvar_t *v, const char *valstr);
 
 static boolean CV_Command(void);
-static consvar_t *CV_FindVar(const char *name);
+consvar_t *CV_FindVar(const char *name);
 static const char *CV_StringValue(const char *var_name);
 static consvar_t *consvar_vars; // list of registered console variables
 
@@ -1027,7 +1027,7 @@ static const char *cv_null_string = "";
   * \return Pointer to the variable if found, or NULL.
   * \sa CV_FindNetVar
   */
-static consvar_t *CV_FindVar(const char *name)
+consvar_t *CV_FindVar(const char *name)
 {
 	consvar_t *cvar;
 
diff --git a/src/command.h b/src/command.h
index 6b5d513e..484cd426 100644
--- a/src/command.h
+++ b/src/command.h
@@ -173,4 +173,7 @@ void CV_ResetCheatNetVars(void);
 boolean CV_IsSetToDefault(consvar_t *v);
 UINT8 CV_CheatsEnabled(void);
 
+// Returns cvar by name. Exposed here for Lua.
+consvar_t *CV_FindVar(const char *name);
+
 #endif // __COMMAND_H__
diff --git a/src/lua_consolelib.c b/src/lua_consolelib.c
index 299870e0..0c73459c 100644
--- a/src/lua_consolelib.c
+++ b/src/lua_consolelib.c
@@ -413,6 +413,30 @@ static int lib_cvRegisterVar(lua_State *L)
 	return 1;
 }
 
+// For some reason I couldn't cherry pick this.
+// Credits for this function go to james. All hail birb.		-Lat'
+
+static int lib_cvFindVar(lua_State *L)
+{
+	consvar_t *cv;
+	if (( cv = CV_FindVar(luaL_checkstring(L,1)) ))
+	{
+		lua_settop(L,1);/* We only want one argument in the stack. */
+		lua_pushlightuserdata(L, cv);/* Now the second value on stack. */
+		luaL_getmetatable(L, META_CVAR);
+		/*
+		The metatable is the last value on the stack, so this
+		applies it to the second value, which is the cvar.
+		*/
+		lua_setmetatable(L,2);
+		lua_pushvalue(L,2);
+		return 1;
+	}
+	else
+		return 0;
+}
+
+
 // CONS_Printf for a single player
 // Use 'print' in baselib for a global message.
 static int lib_consPrintf(lua_State *L)
@@ -452,6 +476,7 @@ static luaL_Reg lib[] = {
 	{"COM_BufInsertText", lib_comBufInsertText},
 	{"CV_RegisterVar", lib_cvRegisterVar},
 	{"CONS_Printf", lib_consPrintf},
+	{"CV_FindVar", lib_cvFindVar},
 	{NULL, NULL}
 };