lua disable bytecode dump & undump functions

Adds a flag to remove the ability to dump and load lua bytecode

saves 6+kb

Change-Id: I080323df7f03f752e0a10928e22a7ce3190a9633

apps/plugins/lua/ldump.c

@@ -15,6 +15,8 @@
 #include "lstate.h"
 #include "lundump.h"
 
+#ifndef LUA_DISABLE_BYTECODE
+
 typedef struct {
  lua_State* L;
  lua_Writer writer;
@@ -162,3 +164,14 @@ int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip
  DumpFunction(f,NULL,&D);
  return D.status;
 }
+#else /* LUA_DISABLE_BYTECODE */
+#include "lauxlib.h"
+int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip)
+{
+ (void) f;
+ (void) w;
+ (void) data;
+ (void) strip;
+ return luaL_error(L, " bytecode not supported");
+}
+#endif

apps/plugins/lua/luaconf.h

@@ -797,7 +797,7 @@ extern long rb_pow(long, long);
 #undef LUA_COMPAT_GFIND
 #undef LUA_COMPAT_OPENLIB
 
-/* Resize heap allocated buffers */
+/* Resize [STACK] allocated buffers */
 #undef LUAI_MAXVARS /*200*/
 #define LUAI_MAXVARS  100
 
@@ -811,6 +811,6 @@ extern long rb_pow(long, long);
 #include "rockconf.h"
 
 /*else*/
-#define LUAC_TRUST_BINARIES
+#define LUA_DISABLE_BYTECODE
 
 #endif

apps/plugins/lua/lundump.c

@@ -20,6 +20,8 @@
 #include "lundump.h"
 #include "lzio.h"
 
+#ifndef LUA_DISABLE_BYTECODE
+
 typedef struct {
  lua_State* L;
  ZIO* Z;
@@ -225,3 +227,14 @@ void luaU_header (char* h)
  *h++=(char)sizeof(lua_Number);
  *h++=(char)(((lua_Number)0.5)==0);		/* is lua_Number integral? */
 }
+
+#else /* LUA_DISABLE_BYTECODE */
+#include "lauxlib.h"
+Proto* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff, const char* name)
+{
+ (void) Z;
+ (void) buff;
+ luaL_error(L, LUA_QL("%s") " bytecode not supported", name);
+ return NULL;
+}
+#endif

apps/plugins/lua/lundump.h

@@ -13,12 +13,13 @@
 /* load one chunk; from lundump.c */
 LUAI_FUNC Proto* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff, const char* name);
 
-/* make header; from lundump.c */
-LUAI_FUNC void luaU_header (char* h);
-
 /* dump one chunk; from ldump.c */
 LUAI_FUNC int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip);
 
+#ifndef LUA_DISABLE_BYTECODE
+/* make header; from lundump.c */
+LUAI_FUNC void luaU_header (char* h);
+
 #ifdef luac_c
 /* print one chunk; from print.c */
 LUAI_FUNC void luaU_print (const Proto* f, int full);
@@ -33,4 +34,5 @@ LUAI_FUNC void luaU_print (const Proto* f, int full);
 /* size of header of binary files */
 #define LUAC_HEADERSIZE		12
 
+#endif /* LUA_DISABLE_BYTECODE */
 #endif