From 4f4ed54d64c653f92c997ff932ada2abfa3b5cb3 Mon Sep 17 00:00:00 2001
From: Thijs <thijs@thijsschreijer.nl>
Date: Thu, 23 May 2024 08:51:31 +0200
Subject: [PATCH] Windows fixes

---
 src/compat.c | 16 ++++++++++++++++
 src/compat.h |  1 +
 src/term.c   | 12 ++++++++----
 3 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/src/compat.c b/src/compat.c
index 6f98854..2d2bec9 100644
--- a/src/compat.c
+++ b/src/compat.c
@@ -14,4 +14,20 @@ void luaL_setfuncs(lua_State *L, const luaL_Reg *l, int nup) {
     }
     lua_pop(L, nup);  /* remove upvalues */
 }
+
+void *luaL_testudata(lua_State *L, int ud, const char *tname) {
+    void *p = lua_touserdata(L, ud);
+    if (p != NULL) {  /* Check for userdata */
+        if (lua_getmetatable(L, ud)) {  /* Does it have a metatable? */
+            lua_getfield(L, LUA_REGISTRYINDEX, tname);  /* Get metatable we're looking for */
+            if (lua_rawequal(L, -1, -2)) {  /* Compare metatables */
+                lua_pop(L, 2);  /* Remove metatables from stack */
+                return p;
+            }
+            lua_pop(L, 2);  /* Remove metatables from stack */
+        }
+    }
+    return NULL;  /* Return NULL if check fails */
+}
+
 #endif
diff --git a/src/compat.h b/src/compat.h
index 7a1fcee..2033aa3 100644
--- a/src/compat.h
+++ b/src/compat.h
@@ -6,6 +6,7 @@
 
 #if LUA_VERSION_NUM == 501
 void luaL_setfuncs(lua_State *L, const luaL_Reg *l, int nup);
+void *luaL_testudata(lua_State *L, int ud, const char *tname);
 #endif
 
 
diff --git a/src/term.c b/src/term.c
index c0699f9..99d3b2b 100644
--- a/src/term.c
+++ b/src/term.c
@@ -493,6 +493,9 @@ static int lst_tcgetattr(lua_State *L)
     lua_setfield(L, -2, "cc");
 
 #else
+    lua_settop(L, 1); // remove all but file handle
+    get_console_handle(L, 1); //check args
+
     lua_newtable(L);
     lsbf_pushbitflags(L, 0);
     lua_setfield(L, -2, "iflag");
@@ -584,11 +587,12 @@ static int lst_tcsetattr(lua_State *L)
 
 #else
     // Windows does not have a tcsetattr function, but we check arguments anyway
-    get_console_handle(L, 1); // to validate args
     luaL_checkinteger(L, 2);
-    lsbf_checkbitflagsfield(L, 3, "iflag", t.c_iflag);
-    lsbf_checkbitflagsfield(L, 3, "oflag", t.c_iflag);
-    lsbf_checkbitflagsfield(L, 3, "lflag", t.c_iflag);
+    lsbf_checkbitflagsfield(L, 3, "iflag", 0);
+    lsbf_checkbitflagsfield(L, 3, "oflag", 0);
+    lsbf_checkbitflagsfield(L, 3, "lflag", 0);
+    lua_settop(L, 1); // remove all but file handle
+    get_console_handle(L, 1);
 #endif
 
     lua_pushboolean(L, 1);