23 static int os_pushresult (lua_State *L, int i, const char *filename) {  in os_pushresult()  argument
26     lua_pushboolean(L, 1);  in os_pushresult()
30     lua_pushnil(L);  in os_pushresult()
31     lua_pushfstring(L, "%s: %s", filename, strerror(en));  in os_pushresult()
32     lua_pushinteger(L, en);  in os_pushresult()
38 static int os_execute (lua_State *L) {  in os_execute()  argument
39   lua_pushinteger(L, system(luaL_optstring(L, 1, NULL)));  in os_execute()
44 static int os_remove (lua_State *L) {  in os_remove()  argument
45   const char *filename = luaL_checkstring(L, 1);  in os_remove()
46   return os_pushresult(L, remove(filename) == 0, filename);  in os_remove()
50 static int os_rename (lua_State *L) {  in os_rename()  argument
51   const char *fromname = luaL_checkstring(L, 1);  in os_rename()
52   const char *toname = luaL_checkstring(L, 2);  in os_rename()
53   return os_pushresult(L, rename(fromname, toname) == 0, fromname);  in os_rename()
57 static int os_tmpname (lua_State *L) {  in os_tmpname()  argument
62     return luaL_error(L, "unable to generate a unique filename");  in os_tmpname()
63   lua_pushstring(L, buff);  in os_tmpname()
68 static int os_getenv (lua_State *L) {  in os_getenv()  argument
69   lua_pushstring(L, getenv(luaL_checkstring(L, 1)));  /* if NULL push nil */  in os_getenv()
74 static int os_clock (lua_State *L) {  in os_clock()  argument
75   lua_pushnumber(L, ((lua_Number)clock())/(lua_Number)CLOCKS_PER_SEC);  in os_clock()
88 static void setfield (lua_State *L, const char *key, int value) {  in setfield()  argument
89   lua_pushinteger(L, value);  in setfield()
90   lua_setfield(L, -2, key);  in setfield()
93 static void setboolfield (lua_State *L, const char *key, int value) {  in setboolfield()  argument
96   lua_pushboolean(L, value);  in setboolfield()
97   lua_setfield(L, -2, key);  in setboolfield()
100 static int getboolfield (lua_State *L, const char *key) {  in getboolfield()  argument
102   lua_getfield(L, -1, key);  in getboolfield()
103   res = lua_isnil(L, -1) ? -1 : lua_toboolean(L, -1);  in getboolfield()
104   lua_pop(L, 1);  in getboolfield()
109 static int getfield (lua_State *L, const char *key, int d) {  in getfield()  argument
111   lua_getfield(L, -1, key);  in getfield()
112   if (lua_isnumber(L, -1))  in getfield()
113     res = (int)lua_tointeger(L, -1);  in getfield()
116       return luaL_error(L, "field " LUA_QS " missing in date table", key);  in getfield()
119   lua_pop(L, 1);  in getfield()
124 static int os_date (lua_State *L) {  in os_date()  argument
125   const char *s = luaL_optstring(L, 1, "%c");  in os_date()
126   time_t t = luaL_opt(L, (time_t)luaL_checknumber, 2, time(NULL));  in os_date()
135     lua_pushnil(L);  in os_date()
137     lua_createtable(L, 0, 9);  /* 9 = number of fields */  in os_date()
138     setfield(L, "sec", stm->tm_sec);  in os_date()
139     setfield(L, "min", stm->tm_min);  in os_date()
140     setfield(L, "hour", stm->tm_hour);  in os_date()
141     setfield(L, "day", stm->tm_mday);  in os_date()
142     setfield(L, "month", stm->tm_mon+1);  in os_date()
143     setfield(L, "year", stm->tm_year+1900);  in os_date()
144     setfield(L, "wday", stm->tm_wday+1);  in os_date()
145     setfield(L, "yday", stm->tm_yday+1);  in os_date()
146     setboolfield(L, "isdst", stm->tm_isdst);  in os_date()
152     luaL_buffinit(L, &b);  in os_date()
170 static int os_time (lua_State *L) {  in os_time()  argument
172   if (lua_isnoneornil(L, 1))  /* called without args? */  in os_time()
176     luaL_checktype(L, 1, LUA_TTABLE);  in os_time()
177     lua_settop(L, 1);  /* make sure table is at the top */  in os_time()
178     ts.tm_sec = getfield(L, "sec", 0);  in os_time()
179     ts.tm_min = getfield(L, "min", 0);  in os_time()
180     ts.tm_hour = getfield(L, "hour", 12);  in os_time()
181     ts.tm_mday = getfield(L, "day", -1);  in os_time()
182     ts.tm_mon = getfield(L, "month", -1) - 1;  in os_time()
183     ts.tm_year = getfield(L, "year", -1) - 1900;  in os_time()
184     ts.tm_isdst = getboolfield(L, "isdst");  in os_time()
188     lua_pushnil(L);  in os_time()
190     lua_pushnumber(L, (lua_Number)t);  in os_time()
195 static int os_difftime (lua_State *L) {  in os_difftime()  argument
196   lua_pushnumber(L, difftime((time_t)(luaL_checknumber(L, 1)),  in os_difftime()
197                              (time_t)(luaL_optnumber(L, 2, 0))));  in os_difftime()
204 static int os_setlocale (lua_State *L) {  in os_setlocale()  argument
209   const char *l = luaL_optstring(L, 1, NULL);  in os_setlocale()
210   int op = luaL_checkoption(L, 2, "all", catnames);  in os_setlocale()
211   lua_pushstring(L, setlocale(cat[op], l));  in os_setlocale()
216 static int os_exit (lua_State *L) {  in os_exit()  argument
217   exit(luaL_optint(L, 1, EXIT_SUCCESS));  in os_exit()
239 LUALIB_API int luaopen_os (lua_State *L) {  in luaopen_os()  argument
240   luaL_register(L, LUA_OSLIBNAME, syslib);  in luaopen_os()