100 lines
2.0 KiB
C
100 lines
2.0 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include "lua.h"
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#include "lualib.h"
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#include "lauxlib.h"
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static int LUAF_createludata(lua_State *L)
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{
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lua_pushlightuserdata(L, (void*)321);
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return 1;
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}
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/* A userdata that may be literally persisted */
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static int LUAF_boxinteger(lua_State *L)
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{
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/* num */
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int* ptr = (int*)lua_newuserdata(L, sizeof(int));
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/* num udata */
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*ptr = luaL_checkint(L, 1);
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lua_newtable(L);
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/* num udata mt */
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lua_pushstring(L, "__persist");
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/* num udata mt "__persist" */
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lua_pushboolean(L, 1);
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/* num udata mt "__persist" true */
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lua_rawset(L, 3);
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/* num udata mt */
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lua_setmetatable(L, 2);
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/* num udata */
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return 1;
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}
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static int LUAF_boxboolean(lua_State *L)
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{
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/* bool */
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char* ptr = (char*)lua_newuserdata(L, sizeof(char));
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/* bool udata */
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*ptr = (char)lua_toboolean(L, 1);
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lua_newtable(L);
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/* num udata mt */
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lua_pushstring(L, "__persist");
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/* num udata mt "__persist" */
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lua_getglobal(L, "booleanpersist");
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/* num udata mt "__persist" booleanpersist */
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lua_rawset(L, 3);
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/* num udata mt */
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lua_setmetatable(L, 2);
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/* num udata */
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return 1;
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}
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static int LUAF_unboxboolean(lua_State *L)
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{
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/* udata */
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lua_pushboolean(L, *(char*)lua_touserdata(L, 1));
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/* udata bool */
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return 1;
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}
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static int LUAF_onerror(lua_State *L)
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{
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const char* str = 0;
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if(lua_gettop(L) != 0)
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{
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str = lua_tostring(L, -1);
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printf("%s\n",str);
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}
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return 0;
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}
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int main(int argc, char** argv)
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{
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if (argc < 2) {
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printf("Usage: persist <script> <filename>\n");
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return 1;
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}
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lua_State* L = luaL_newstate();
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luaL_openlibs(L);
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lua_settop(L, 0);
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lua_register(L, "createludata", LUAF_createludata);
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lua_register(L, "boxinteger", LUAF_boxinteger);
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lua_register(L, "boxboolean", LUAF_boxboolean);
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lua_register(L, "unboxboolean", LUAF_unboxboolean);
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lua_register(L, "onerror", LUAF_onerror);
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lua_pushcfunction(L, LUAF_onerror);
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luaL_loadfile(L, argv[1]);
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lua_pushstring(L, argv[2]);
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lua_pcall(L,1,0,1);
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lua_close(L);
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return 0;
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}
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