diff options
| -rw-r--r-- | magic.c | 51 |
1 files changed, 47 insertions, 4 deletions
@@ -12,7 +12,7 @@ LGPL #define MODULE_NAME "magic" #define MODULE_VERSION "0.1" -#define MAGIC_META "magic" +#define LUA_MAGIC_META "magic" struct magic_constmap { const char *name; @@ -63,9 +63,42 @@ static int Ptodo(lua_State *L) return 0; } +static int Popen(lua_State *L) +{ + magic_t *h; + int flags = luaL_optinteger(L, 1, MAGIC_NONE); + + h = lua_newuserdata(L, sizeof(magic_t)); + luaL_getmetatable(L, LUA_MAGIC_META); + lua_setmetatable(L, -2); + *h = magic_open(flags); + if (*h == NULL) + luaL_error(L, "magic_open failed"); + return 1; +} + +static magic_t Pmagic_checkarg(lua_State *L, int index) +{ + magic_t *m; + luaL_checktype(L, index, LUA_TUSERDATA); + m = (magic_t *) luaL_checkudata(L, index, LUA_MAGIC_META); + if (m == NULL) + luaL_typerror(L, index, LUA_MAGIC_META); + return *m; +} + +static int Pclose(lua_State *L) +{ + magic_t m = Pmagic_checkarg(L, 1); + if (m) + magic_close(m); + m = NULL; + return 0; +} + static const luaL_reg Pmagic_methods[] = { - {"open", Ptodo}, - {"close", Ptodo}, + {"open", Popen}, + {"close", Pclose}, {"getpath", Ptodo}, {"file", Ptodo}, {"descriptor", Ptodo}, @@ -81,7 +114,7 @@ static const luaL_reg Pmagic_methods[] = { }; static const luaL_reg Pmeta_methods[] = { - {"__gc", Ptodo}, + {"__gc", Pclose}, {NULL, NULL}, }; @@ -94,6 +127,16 @@ LUALIB_API int luaopen_magic(lua_State *L) init_consts(L); + luaL_newmetatable(L, LUA_MAGIC_META); + luaL_register(L, NULL, Pmeta_methods); + lua_pushliteral(L, "__index"); + lua_pushvalue(L, -3); + lua_rawset(L, -3); + lua_pushliteral(L, "__metatable"); + lua_pushvalue(L, -3); + lua_rawset(L, -3); + lua_pop(L, 1); + return 1; } |