SWORD25: Re-implement two LUA library I/O functions necessary for detecting and creating the config.lua configuration file

2 files changed, 19 insertions, 2 deletions

diff --git a/engines/sword25/util/lua/lauxlib.cpp b/engines/sword25/util/lua/lauxlib.cpp
index 526b1c84ab..ce61827e0f 100644
--- a/engines/sword25/util/lua/lauxlib.cpp
+++ b/engines/sword25/util/lua/lauxlib.cpp
@@ -540,7 +540,11 @@ static const char *getF (lua_State *L, void *ud, size_t *size) {
 
 
 static int errfile (lua_State *L, const char *what, int fnameindex) {
-  return luaL_error(L, "LUA function errfile has been removed in ScummVM");
+	const char *serr = "General error";
+	const char *filename = lua_tostring(L, fnameindex) + 1;
+	lua_pushfstring(L, "cannot %s %s: %s", what, filename, serr);
+	lua_remove(L, fnameindex);
+	return LUA_ERRFILE;
 }
 
 
diff --git a/engines/sword25/util/lua/liolib.cpp b/engines/sword25/util/lua/liolib.cpp
index f9bad30aed..aea6c328d8 100644
--- a/engines/sword25/util/lua/liolib.cpp
+++ b/engines/sword25/util/lua/liolib.cpp
@@ -27,7 +27,20 @@ static const char *const fnames[] = {"input", "output"};
 
 
 static int pushresult (lua_State *L, int i, const char *filename) {
-  return luaL_error(L, "LUA file I/O functions have been removed in ScummVM");
+  int en = 0; /*errno;*/  // Currently hardcoded for ScumMVM, this may need to be changed
+  if (i) {
+    lua_pushboolean(L, 1);
+    return 1;
+  }
+  else {
+    lua_pushnil(L);
+    if (filename)
+      lua_pushfstring(L, "%s: %s", filename, "General error" /*strerror(en)*/);
+    else
+      lua_pushfstring(L, "%s", "General error" /*strerror(en)*/);
+    lua_pushinteger(L, en);
+    return 3;
+  }
 }