1dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com/* 2dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** $Id: loslib.c,v 1.40 2012/10/19 15:54:02 roberto Exp $ 3dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** Standard Operating System library 4dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** See Copyright Notice in lua.h 5dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com*/ 6dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 7dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 8dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#include <errno.h> 9dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#include <locale.h> 10dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#include <stdlib.h> 11dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#include <string.h> 12dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#include <time.h> 13dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 14dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define loslib_c 15dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define LUA_LIB 16dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 17dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#include "lua.h" 18dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 19dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#include "lauxlib.h" 20dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#include "lualib.h" 21dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 22dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 23dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com/* 24dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** list of valid conversion specifiers for the 'strftime' function 25dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com*/ 26dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#if !defined(LUA_STRFTIMEOPTIONS) 27dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 28dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#if !defined(LUA_USE_POSIX) 29dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define LUA_STRFTIMEOPTIONS { "aAbBcdHIjmMpSUwWxXyYz%", "" } 30dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#else 31dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define LUA_STRFTIMEOPTIONS \ 32dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com { "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%", "" \ 33dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com "", "E", "cCxXyY", \ 34dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com "O", "deHImMSuUVwWy" } 35dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#endif 36dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 37dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#endif 38dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 39dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 40dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 41dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com/* 42dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** By default, Lua uses tmpnam except when POSIX is available, where it 43dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** uses mkstemp. 44dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com*/ 45dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#if defined(LUA_USE_MKSTEMP) 46dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#include <unistd.h> 47dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define LUA_TMPNAMBUFSIZE 32 48dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define lua_tmpnam(b,e) { \ 49dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com strcpy(b, "/tmp/lua_XXXXXX"); \ 50dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com e = mkstemp(b); \ 51dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (e != -1) close(e); \ 52dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com e = (e == -1); } 53dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 54dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#elif !defined(lua_tmpnam) 55dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 56dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define LUA_TMPNAMBUFSIZE L_tmpnam 57dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); } 58dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 59dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#endif 60dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 61dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 62dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com/* 63dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** By default, Lua uses gmtime/localtime, except when POSIX is available, 64dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** where it uses gmtime_r/localtime_r 65dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com*/ 66dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#if defined(LUA_USE_GMTIME_R) 67dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 68dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define l_gmtime(t,r) gmtime_r(t,r) 69dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define l_localtime(t,r) localtime_r(t,r) 70dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 71dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#elif !defined(l_gmtime) 72dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 73dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define l_gmtime(t,r) ((void)r, gmtime(t)) 74dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#define l_localtime(t,r) ((void)r, localtime(t)) 75dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 76dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com#endif 77dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 78dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 79dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 80dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int os_execute (lua_State *L) { 81dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com const char *cmd = luaL_optstring(L, 1, NULL); 82dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com int stat = system(cmd); 83dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (cmd != NULL) 84dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return luaL_execresult(L, stat); 85dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com else { 86dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushboolean(L, stat); /* true if there is a shell */ 87dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return 1; 88dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 89dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 90dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 91dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 92dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int os_remove (lua_State *L) { 93dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com const char *filename = luaL_checkstring(L, 1); 94dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return luaL_fileresult(L, remove(filename) == 0, filename); 95dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 96dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 97dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 98dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int os_rename (lua_State *L) { 99dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com const char *fromname = luaL_checkstring(L, 1); 100dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com const char *toname = luaL_checkstring(L, 2); 101dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return luaL_fileresult(L, rename(fromname, toname) == 0, NULL); 102dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 103dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 104dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 105dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int os_tmpname (lua_State *L) { 106dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com char buff[LUA_TMPNAMBUFSIZE]; 107dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com int err; 108dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_tmpnam(buff, err); 109dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (err) 110dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return luaL_error(L, "unable to generate a unique filename"); 111dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushstring(L, buff); 112dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return 1; 113dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 114dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 115dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 116dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int os_getenv (lua_State *L) { 117dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushstring(L, getenv(luaL_checkstring(L, 1))); /* if NULL push nil */ 118dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return 1; 119dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 120dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 121dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 122dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int os_clock (lua_State *L) { 123dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushnumber(L, ((lua_Number)clock())/(lua_Number)CLOCKS_PER_SEC); 124dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return 1; 125dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 126dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 127dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 128dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com/* 129dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** {====================================================== 130dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** Time/Date operations 131dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** { year=%Y, month=%m, day=%d, hour=%H, min=%M, sec=%S, 132dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** wday=%w+1, yday=%j, isdst=? } 133dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com** ======================================================= 134dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com*/ 135dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 136dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic void setfield (lua_State *L, const char *key, int value) { 137dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushinteger(L, value); 138dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_setfield(L, -2, key); 139dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 140dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 141dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic void setboolfield (lua_State *L, const char *key, int value) { 142dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (value < 0) /* undefined? */ 143dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return; /* does not set field */ 144dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushboolean(L, value); 145dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_setfield(L, -2, key); 146dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 147dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 148dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int getboolfield (lua_State *L, const char *key) { 149dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com int res; 150dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_getfield(L, -1, key); 151dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com res = lua_isnil(L, -1) ? -1 : lua_toboolean(L, -1); 152dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pop(L, 1); 153dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return res; 154dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 155dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 156dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 157dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int getfield (lua_State *L, const char *key, int d) { 158dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com int res, isnum; 159dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_getfield(L, -1, key); 160dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com res = (int)lua_tointegerx(L, -1, &isnum); 161dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (!isnum) { 162dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (d < 0) 163dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return luaL_error(L, "field " LUA_QS " missing in date table", key); 164dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com res = d; 165dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 166dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pop(L, 1); 167dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return res; 168dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 169dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 170dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 171dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic const char *checkoption (lua_State *L, const char *conv, char *buff) { 172dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com static const char *const options[] = LUA_STRFTIMEOPTIONS; 173dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com unsigned int i; 174dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com for (i = 0; i < sizeof(options)/sizeof(options[0]); i += 2) { 175dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (*conv != '\0' && strchr(options[i], *conv) != NULL) { 176dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com buff[1] = *conv; 177dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (*options[i + 1] == '\0') { /* one-char conversion specifier? */ 178dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com buff[2] = '\0'; /* end buffer */ 179dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return conv + 1; 180dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 181dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com else if (*(conv + 1) != '\0' && 182dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com strchr(options[i + 1], *(conv + 1)) != NULL) { 183dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com buff[2] = *(conv + 1); /* valid two-char conversion specifier */ 184dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com buff[3] = '\0'; /* end buffer */ 185dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return conv + 2; 186dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 187dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 188dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 189dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com luaL_argerror(L, 1, 190dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushfstring(L, "invalid conversion specifier '%%%s'", conv)); 191dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return conv; /* to avoid warnings */ 192dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 193dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 194dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 195dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int os_date (lua_State *L) { 196dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com const char *s = luaL_optstring(L, 1, "%c"); 197dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com time_t t = luaL_opt(L, (time_t)luaL_checknumber, 2, time(NULL)); 198dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com struct tm tmr, *stm; 199dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (*s == '!') { /* UTC? */ 200dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com stm = l_gmtime(&t, &tmr); 201dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com s++; /* skip `!' */ 202dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 203dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com else 204dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com stm = l_localtime(&t, &tmr); 205dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (stm == NULL) /* invalid date? */ 206dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushnil(L); 207dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com else if (strcmp(s, "*t") == 0) { 208dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_createtable(L, 0, 9); /* 9 = number of fields */ 209dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com setfield(L, "sec", stm->tm_sec); 210dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com setfield(L, "min", stm->tm_min); 211dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com setfield(L, "hour", stm->tm_hour); 212dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com setfield(L, "day", stm->tm_mday); 213dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com setfield(L, "month", stm->tm_mon+1); 214dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com setfield(L, "year", stm->tm_year+1900); 215dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com setfield(L, "wday", stm->tm_wday+1); 216dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com setfield(L, "yday", stm->tm_yday+1); 217dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com setboolfield(L, "isdst", stm->tm_isdst); 218dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 219dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com else { 220dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com char cc[4]; 221dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com luaL_Buffer b; 222dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com cc[0] = '%'; 223dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com luaL_buffinit(L, &b); 224dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com while (*s) { 225dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (*s != '%') /* no conversion specifier? */ 226dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com luaL_addchar(&b, *s++); 227dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com else { 228dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com size_t reslen; 229dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com char buff[200]; /* should be big enough for any conversion result */ 230dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com s = checkoption(L, s + 1, cc); 231dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com reslen = strftime(buff, sizeof(buff), cc, stm); 232dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com luaL_addlstring(&b, buff, reslen); 233dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 234dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 235dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com luaL_pushresult(&b); 236dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 237dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return 1; 238dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 239dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 240dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 241dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int os_time (lua_State *L) { 242dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com time_t t; 243dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (lua_isnoneornil(L, 1)) /* called without args? */ 244dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com t = time(NULL); /* get current time */ 245dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com else { 246dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com struct tm ts; 247dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com luaL_checktype(L, 1, LUA_TTABLE); 248dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_settop(L, 1); /* make sure table is at the top */ 249dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com ts.tm_sec = getfield(L, "sec", 0); 250dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com ts.tm_min = getfield(L, "min", 0); 251dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com ts.tm_hour = getfield(L, "hour", 12); 252dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com ts.tm_mday = getfield(L, "day", -1); 253dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com ts.tm_mon = getfield(L, "month", -1) - 1; 254dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com ts.tm_year = getfield(L, "year", -1) - 1900; 255dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com ts.tm_isdst = getboolfield(L, "isdst"); 256dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com t = mktime(&ts); 257dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com } 258dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (t == (time_t)(-1)) 259dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushnil(L); 260dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com else 261dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushnumber(L, (lua_Number)t); 262dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return 1; 263dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 264dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 265dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 266dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int os_difftime (lua_State *L) { 267dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushnumber(L, difftime((time_t)(luaL_checknumber(L, 1)), 268dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com (time_t)(luaL_optnumber(L, 2, 0)))); 269dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return 1; 270dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 271dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 272dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com/* }====================================================== */ 273dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 274dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 275dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int os_setlocale (lua_State *L) { 276dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com static const int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY, 277dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com LC_NUMERIC, LC_TIME}; 278dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com static const char *const catnames[] = {"all", "collate", "ctype", "monetary", 279dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com "numeric", "time", NULL}; 280dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com const char *l = luaL_optstring(L, 1, NULL); 281dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com int op = luaL_checkoption(L, 2, "all", catnames); 282dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_pushstring(L, setlocale(cat[op], l)); 283dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return 1; 284dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 285dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 286dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 287dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic int os_exit (lua_State *L) { 288dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com int status; 289dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (lua_isboolean(L, 1)) 290dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com status = (lua_toboolean(L, 1) ? EXIT_SUCCESS : EXIT_FAILURE); 291dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com else 292dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com status = luaL_optint(L, 1, EXIT_SUCCESS); 293dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (lua_toboolean(L, 2)) 294dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com lua_close(L); 295dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com if (L) exit(status); /* 'if' to avoid warnings for unreachable 'return' */ 296dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return 0; 297dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 298dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 299dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 300dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comstatic const luaL_Reg syslib[] = { 301dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {"clock", os_clock}, 302dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {"date", os_date}, 303dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {"difftime", os_difftime}, 304dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {"execute", os_execute}, 305dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {"exit", os_exit}, 306dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {"getenv", os_getenv}, 307dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {"remove", os_remove}, 308dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {"rename", os_rename}, 309dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {"setlocale", os_setlocale}, 310dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {"time", os_time}, 311dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {"tmpname", os_tmpname}, 312dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com {NULL, NULL} 313dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com}; 314dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 315dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com/* }====================================================== */ 316dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 317dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 318dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 319dff7e11c2000d6745261de046d76b1500a05ece9reed@google.comLUAMOD_API int luaopen_os (lua_State *L) { 320dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com luaL_newlib(L, syslib); 321dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com return 1; 322dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com} 323dff7e11c2000d6745261de046d76b1500a05ece9reed@google.com 324