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src/lib_os.c - luajit-2.0-src
Functions defined
Macros defined
Source code
- #include <errno.h>
- #include <time.h>
- #define lib_os_c
- #define LUA_LIB
- #include "lua.h"
- #include "lauxlib.h"
- #include "lualib.h"
- #include "lj_obj.h"
- #include "lj_gc.h"
- #include "lj_err.h"
- #include "lj_buf.h"
- #include "lj_str.h"
- #include "lj_lib.h"
- #if LJ_TARGET_POSIX
- #include <unistd.h>
- #else
- #include <stdio.h>
- #endif
- #if !LJ_TARGET_PSVITA
- #include <locale.h>
- #endif
- #define LJLIB_MODULE_os
- LJLIB_CF(os_execute)
- {
- #if LJ_TARGET_CONSOLE
- #if LJ_52
- errno = ENOSYS;
- return luaL_fileresult(L, 0, NULL);
- #else
- lua_pushinteger(L, -1);
- return 1;
- #endif
- #else
- const char *cmd = luaL_optstring(L, 1, NULL);
- int stat = system(cmd);
- #if LJ_52
- if (cmd)
- return luaL_execresult(L, stat);
- setboolV(L->top++, 1);
- #else
- setintV(L->top++, stat);
- #endif
- return 1;
- #endif
- }
- LJLIB_CF(os_remove)
- {
- const char *filename = luaL_checkstring(L, 1);
- return luaL_fileresult(L, remove(filename) == 0, filename);
- }
- LJLIB_CF(os_rename)
- {
- const char *fromname = luaL_checkstring(L, 1);
- const char *toname = luaL_checkstring(L, 2);
- return luaL_fileresult(L, rename(fromname, toname) == 0, fromname);
- }
- LJLIB_CF(os_tmpname)
- {
- #if LJ_TARGET_PS3 || LJ_TARGET_PS4 || LJ_TARGET_PSVITA
- lj_err_caller(L, LJ_ERR_OSUNIQF);
- return 0;
- #else
- #if LJ_TARGET_POSIX
- char buf[15+1];
- int fp;
- strcpy(buf, "/tmp/lua_XXXXXX");
- fp = mkstemp(buf);
- if (fp != -1)
- close(fp);
- else
- lj_err_caller(L, LJ_ERR_OSUNIQF);
- #else
- char buf[L_tmpnam];
- if (tmpnam(buf) == NULL)
- lj_err_caller(L, LJ_ERR_OSUNIQF);
- #endif
- lua_pushstring(L, buf);
- return 1;
- #endif
- }
- LJLIB_CF(os_getenv)
- {
- #if LJ_TARGET_CONSOLE
- lua_pushnil(L);
- #else
- lua_pushstring(L, getenv(luaL_checkstring(L, 1)));
- #endif
- return 1;
- }
- LJLIB_CF(os_exit)
- {
- int status;
- if (L->base < L->top && tvisbool(L->base))
- status = boolV(L->base) ? EXIT_SUCCESS : EXIT_FAILURE;
- else
- status = lj_lib_optint(L, 1, EXIT_SUCCESS);
- if (L->base+1 < L->top && tvistruecond(L->base+1))
- lua_close(L);
- exit(status);
- return 0;
- }
- LJLIB_CF(os_clock)
- {
- setnumV(L->top++, ((lua_Number)clock())*(1.0/(lua_Number)CLOCKS_PER_SEC));
- return 1;
- }
- static void setfield(lua_State *L, const char *key, int value)
- {
- lua_pushinteger(L, value);
- lua_setfield(L, -2, key);
- }
- static void setboolfield(lua_State *L, const char *key, int value)
- {
- if (value < 0)
- return;
- lua_pushboolean(L, value);
- lua_setfield(L, -2, key);
- }
- static int getboolfield(lua_State *L, const char *key)
- {
- int res;
- lua_getfield(L, -1, key);
- res = lua_isnil(L, -1) ? -1 : lua_toboolean(L, -1);
- lua_pop(L, 1);
- return res;
- }
- static int getfield(lua_State *L, const char *key, int d)
- {
- int res;
- lua_getfield(L, -1, key);
- if (lua_isnumber(L, -1)) {
- res = (int)lua_tointeger(L, -1);
- } else {
- if (d < 0)
- lj_err_callerv(L, LJ_ERR_OSDATEF, key);
- res = d;
- }
- lua_pop(L, 1);
- return res;
- }
- LJLIB_CF(os_date)
- {
- const char *s = luaL_optstring(L, 1, "%c");
- time_t t = luaL_opt(L, (time_t)luaL_checknumber, 2, time(NULL));
- struct tm *stm;
- #if LJ_TARGET_POSIX
- struct tm rtm;
- #endif
- if (*s == '!') {
- s++;
- #if LJ_TARGET_POSIX
- stm = gmtime_r(&t, &rtm);
- #else
- stm = gmtime(&t);
- #endif
- } else {
- #if LJ_TARGET_POSIX
- stm = localtime_r(&t, &rtm);
- #else
- stm = localtime(&t);
- #endif
- }
- if (stm == NULL) {
- setnilV(L->top++);
- } else if (strcmp(s, "*t") == 0) {
- lua_createtable(L, 0, 9);
- setfield(L, "sec", stm->tm_sec);
- setfield(L, "min", stm->tm_min);
- setfield(L, "hour", stm->tm_hour);
- setfield(L, "day", stm->tm_mday);
- setfield(L, "month", stm->tm_mon+1);
- setfield(L, "year", stm->tm_year+1900);
- setfield(L, "wday", stm->tm_wday+1);
- setfield(L, "yday", stm->tm_yday+1);
- setboolfield(L, "isdst", stm->tm_isdst);
- } else if (*s) {
- SBuf *sb = &G(L)->tmpbuf;
- MSize sz = 0;
- const char *q;
- for (q = s; *q; q++)
- sz += (*q == '%') ? 30 : 1;
- setsbufL(sb, L);
- for (;;) {
- char *buf = lj_buf_need(sb, sz);
- size_t len = strftime(buf, sbufsz(sb), s, stm);
- if (len) {
- setstrV(L, L->top++, lj_str_new(L, buf, len));
- lj_gc_check(L);
- break;
- }
- sz += (sz|1);
- }
- } else {
- setstrV(L, L->top++, &G(L)->strempty);
- }
- return 1;
- }
- LJLIB_CF(os_time)
- {
- time_t t;
- if (lua_isnoneornil(L, 1)) {
- t = time(NULL);
- } else {
- struct tm ts;
- luaL_checktype(L, 1, LUA_TTABLE);
- lua_settop(L, 1);
- ts.tm_sec = getfield(L, "sec", 0);
- ts.tm_min = getfield(L, "min", 0);
- ts.tm_hour = getfield(L, "hour", 12);
- ts.tm_mday = getfield(L, "day", -1);
- ts.tm_mon = getfield(L, "month", -1) - 1;
- ts.tm_year = getfield(L, "year", -1) - 1900;
- ts.tm_isdst = getboolfield(L, "isdst");
- t = mktime(&ts);
- }
- if (t == (time_t)(-1))
- lua_pushnil(L);
- else
- lua_pushnumber(L, (lua_Number)t);
- return 1;
- }
- LJLIB_CF(os_difftime)
- {
- lua_pushnumber(L, difftime((time_t)(luaL_checknumber(L, 1)),
- (time_t)(luaL_optnumber(L, 2, (lua_Number)0))));
- return 1;
- }
- LJLIB_CF(os_setlocale)
- {
- #if LJ_TARGET_PSVITA
- lua_pushliteral(L, "C");
- #else
- GCstr *s = lj_lib_optstr(L, 1);
- const char *str = s ? strdata(s) : NULL;
- int opt = lj_lib_checkopt(L, 2, 6,
- "\5ctype\7numeric\4time\7collate\10monetary\1\377\3all");
- if (opt == 0) opt = LC_CTYPE;
- else if (opt == 1) opt = LC_NUMERIC;
- else if (opt == 2) opt = LC_TIME;
- else if (opt == 3) opt = LC_COLLATE;
- else if (opt == 4) opt = LC_MONETARY;
- else if (opt == 6) opt = LC_ALL;
- lua_pushstring(L, setlocale(opt, str));
- #endif
- return 1;
- }
- #include "lj_libdef.h"
- LUALIB_API int luaopen_os(lua_State *L)
- {
- LJ_LIB_REG(L, LUA_OSLIBNAME, os);
- return 1;
- }
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