forked from len0rd/rockbox
Lua: add support for os library
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21106 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Maurus Cuelenaere
parent
64595105b1
commit
b2581e143d
7 changed files with 398 additions and 3 deletions
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@ -1,7 +1,9 @@
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The following files are (with slight modifications for Rockbox) from dietlibc
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version 0.31 which is licensed under the GPL version 2:
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gmtime.c
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strcspn.c
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strftime.c
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strncat.c
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strpbrk.c
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strtol.c
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@ -11,6 +11,7 @@ llex.c
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lmem.c
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lobject.c
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lopcodes.c
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loslib.c
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lparser.c
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lstate.c
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lstring.c
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@ -24,7 +25,9 @@ lzio.c
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rockaux.c
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rocklib.c
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rockmalloc.c
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gmtime.c
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strcspn.c
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strftime.c
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strncat.c
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strpbrk.c
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strtoul.c
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58
apps/plugins/lua/gmtime.c
Normal file
58
apps/plugins/lua/gmtime.c
Normal file
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@ -0,0 +1,58 @@
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#include <time.h>
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/* seconds per day */
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#define SPD 24*60*60
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/* days per month -- nonleap! */
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const short __spm[13] =
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{ 0,
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(31),
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(31+28),
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(31+28+31),
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(31+28+31+30),
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(31+28+31+30+31),
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(31+28+31+30+31+30),
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(31+28+31+30+31+30+31),
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(31+28+31+30+31+30+31+31),
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(31+28+31+30+31+30+31+31+30),
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(31+28+31+30+31+30+31+31+30+31),
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(31+28+31+30+31+30+31+31+30+31+30),
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(31+28+31+30+31+30+31+31+30+31+30+31),
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};
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int __isleap(int year) {
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/* every fourth year is a leap year except for century years that are
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* not divisible by 400. */
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/* return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */
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return (!(year%4) && ((year%100) || !(year%400)));
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}
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struct tm *gmtime(const time_t *timep) {
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static struct tm r;
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time_t i;
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register time_t work=*timep%(SPD);
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r.tm_sec=work%60; work/=60;
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r.tm_min=work%60; r.tm_hour=work/60;
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work=*timep/(SPD);
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r.tm_wday=(4+work)%7;
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for (i=1970; ; ++i) {
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register time_t k=__isleap(i)?366:365;
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if (work>=k)
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work-=k;
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else
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break;
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}
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r.tm_year=i-1900;
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r.tm_yday=work;
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r.tm_mday=1;
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if (__isleap(i) && (work>58)) {
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if (work==59) r.tm_mday=2; /* 29.2. */
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work-=1;
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}
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for (i=11; i && (__spm[i]>work); --i) ;
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r.tm_mon=i;
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r.tm_mday+=work-__spm[i];
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return &r;
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}
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199
apps/plugins/lua/loslib.c
Normal file
199
apps/plugins/lua/loslib.c
Normal file
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@ -0,0 +1,199 @@
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/*
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** $Id: loslib.c,v 1.19.1.3 2008/01/18 16:38:18 roberto Exp $
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** Standard Operating System library
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** See Copyright Notice in lua.h
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*/
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#define loslib_c
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#define LUA_LIB
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#include "lua.h"
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#include "lauxlib.h"
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#include "lualib.h"
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static int os_pushresult (lua_State *L, int i, const char *filename) {
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int en = errno; /* calls to Lua API may change this value */
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if (i) {
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lua_pushboolean(L, 1);
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return 1;
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}
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else {
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lua_pushnil(L);
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lua_pushfstring(L, "%s: %s", filename, strerror(en));
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lua_pushinteger(L, en);
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return 3;
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}
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}
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static int os_remove (lua_State *L) {
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const char *filename = luaL_checkstring(L, 1);
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return os_pushresult(L, rb->remove(filename) == 0, filename);
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}
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static int os_rename (lua_State *L) {
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const char *fromname = luaL_checkstring(L, 1);
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const char *toname = luaL_checkstring(L, 2);
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return os_pushresult(L, rb->rename(fromname, toname) == 0, fromname);
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}
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/*
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** {======================================================
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** Time/Date operations
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** { year=%Y, month=%m, day=%d, hour=%H, min=%M, sec=%S,
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** wday=%w+1, yday=%j, isdst=? }
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** =======================================================
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*/
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static void setfield (lua_State *L, const char *key, int value) {
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lua_pushinteger(L, value);
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lua_setfield(L, -2, key);
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}
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static void setboolfield (lua_State *L, const char *key, int value) {
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if (value < 0) /* undefined? */
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return; /* does not set field */
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lua_pushboolean(L, value);
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lua_setfield(L, -2, key);
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}
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static int getboolfield (lua_State *L, const char *key) {
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int res;
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lua_getfield(L, -1, key);
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res = lua_isnil(L, -1) ? -1 : lua_toboolean(L, -1);
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lua_pop(L, 1);
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return res;
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}
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static int getfield (lua_State *L, const char *key, int d) {
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int res;
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lua_getfield(L, -1, key);
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if (lua_isnumber(L, -1))
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res = (int)lua_tointeger(L, -1);
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else {
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if (d < 0)
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return luaL_error(L, "field " LUA_QS " missing in date table", key);
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res = d;
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}
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lua_pop(L, 1);
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return res;
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}
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static int os_date (lua_State *L) {
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const char *s = luaL_optstring(L, 1, "%c");
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time_t t = luaL_opt(L, (time_t)luaL_checknumber, 2,
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#if CONFIG_RTC
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rb->mktime(rb->get_time())
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#else
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0
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#endif
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);
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struct tm *stm;
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if (*s == '!') /* UTC? */ /* Rockbox doesn't support timezones */
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s++; /* skip `!' */
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stm = gmtime(&t);
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if (stm == NULL) /* invalid date? */
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lua_pushnil(L);
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else if (strcmp(s, "*t") == 0) {
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lua_createtable(L, 0, 9); /* 9 = number of fields */
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setfield(L, "sec", stm->tm_sec);
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setfield(L, "min", stm->tm_min);
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setfield(L, "hour", stm->tm_hour);
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setfield(L, "day", stm->tm_mday);
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setfield(L, "month", stm->tm_mon+1);
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setfield(L, "year", stm->tm_year+1900);
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setfield(L, "wday", stm->tm_wday+1);
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setfield(L, "yday", stm->tm_yday+1);
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setboolfield(L, "isdst", stm->tm_isdst);
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}
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else {
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char cc[3];
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luaL_Buffer b;
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cc[0] = '%'; cc[2] = '\0';
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luaL_buffinit(L, &b);
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for (; *s; s++) {
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if (*s != '%' || *(s + 1) == '\0') /* no conversion specifier? */
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luaL_addchar(&b, *s);
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else {
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size_t reslen;
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char buff[200]; /* should be big enough for any conversion result */
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cc[1] = *(++s);
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reslen = strftime(buff, sizeof(buff), cc, stm);
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luaL_addlstring(&b, buff, reslen);
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}
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}
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luaL_pushresult(&b);
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}
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return 1;
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}
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static int os_time (lua_State *L) {
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time_t t = -1;
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#if CONFIG_RTC
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if (lua_isnoneornil(L, 1)) /* called without args? */
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t = rb->mktime(rb->get_time()); /* get current time */
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else {
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struct tm ts;
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luaL_checktype(L, 1, LUA_TTABLE);
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lua_settop(L, 1); /* make sure table is at the top */
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ts.tm_sec = getfield(L, "sec", 0);
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ts.tm_min = getfield(L, "min", 0);
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ts.tm_hour = getfield(L, "hour", 12);
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ts.tm_mday = getfield(L, "day", -1);
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ts.tm_mon = getfield(L, "month", -1) - 1;
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ts.tm_year = getfield(L, "year", -1) - 1900;
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ts.tm_isdst = getboolfield(L, "isdst");
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t = rb->mktime(&ts);
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}
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#endif
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if (t == (time_t)(-1))
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lua_pushnil(L);
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else
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lua_pushnumber(L, (lua_Number)t);
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return 1;
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}
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/* }====================================================== */
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static int os_exit (lua_State *L) {
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exit(luaL_optint(L, 1, EXIT_SUCCESS));
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}
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static const luaL_Reg syslib[] = {
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//{"clock", os_clock},
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{"date", os_date},
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//{"difftime", os_difftime},
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//{"execute", os_execute},
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{"exit", os_exit},
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//{"getenv", os_getenv},
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{"remove", os_remove},
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{"rename", os_rename},
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//{"setlocale", os_setlocale},
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{"time", os_time},
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//{"tmpname", os_tmpname},
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{NULL, NULL}
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};
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/* }====================================================== */
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LUALIB_API int luaopen_os (lua_State *L) {
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luaL_register(L, LUA_OSLIBNAME, syslib);
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return 1;
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}
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@ -43,8 +43,10 @@
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extern char curpath[MAX_PATH];
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void *dlrealloc(void *ptr, size_t size);
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void dlfree(void *ptr);
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struct tm *gmtime(const time_t *timep);
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long strtol(const char *nptr, char **endptr, int base);
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unsigned long strtoul(const char *str, char **endptr, int base);
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size_t strftime(char* dst, size_t max, const char* format, const struct tm* tm);
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long floor(long x);
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long pow(long x, long y);
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@ -30,9 +30,10 @@
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PLUGIN_HEADER
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static const luaL_Reg lualibs[] = {
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{"", luaopen_base},
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{LUA_TABLIBNAME, luaopen_table},
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{LUA_STRLIBNAME, luaopen_string},
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{"", luaopen_base},
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{LUA_TABLIBNAME, luaopen_table},
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{LUA_STRLIBNAME, luaopen_string},
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{LUA_OSLIBNAME, luaopen_os},
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{LUA_ROCKLIBNAME, luaopen_rock},
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{NULL, NULL}
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};
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130
apps/plugins/lua/strftime.c
Normal file
130
apps/plugins/lua/strftime.c
Normal file
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@ -0,0 +1,130 @@
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#include <sys/types.h>
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#include <time.h>
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#include "plugin.h"
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static const char sweekdays [7] [4] = {
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"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
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};
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static const char weekdays [7] [10] = {
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"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
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};
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static const char smonths [12] [4] = {
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"Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
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};
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static const char* months [12] = {
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"January", "February", "March", "April", smonths[5-1], "June",
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"July", "August", "September", "October", "November", "December"
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};
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static const char ampm [4] [3] = {
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"am", "pm",
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"AM", "PM"
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};
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static void i2a ( char* dest,unsigned long x )
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{
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int div = 10;
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*dest++ = x/div + '0';
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*dest++ = x%div + '0';
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*dest++ = '\0';
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}
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size_t strftime ( char* dst, size_t max, const char* format, const struct tm* tm )
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{
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char* p = dst;
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const char* src;
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unsigned long no;
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char buf [5];
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if (!max) return 0;
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for ( ; *format != '\0'; format++ ) {
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if (*format == '%') {
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if (*++format == '%') {
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*p++ = '%';
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}
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else
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again:
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switch (*format) {
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// case '%': *p++ = '%'; break; // reduce size of jump table
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case 'n': *p++ = '\n'; break;
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case 't': *p++ = '\t'; break;
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case 'O': case 'E': ++format; goto again;
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case 'c': src = "%b %a %d %k:%M:%S %Z %Y"; goto _strf;
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case 'r': src = "%I:%M:%S %p"; goto _strf;
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case 'R': src = "%H:%M"; goto _strf;
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case 'x': src = "%b %a %d"; goto _strf;
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case 'X': src = "%k:%M:%S"; goto _strf;
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case 'D': src = "%m/%d/%y"; goto _strf;
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case 'T': src = "%H:%M:%S";
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_strf: p += strftime (p, (size_t)(dst+max-p), src, tm); break;
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case 'a': src = sweekdays [tm->tm_wday]; goto _str;
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case 'A': src = weekdays [tm->tm_wday]; goto _str;
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case 'h':
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case 'b': src = smonths [tm->tm_mon]; goto _str;
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case 'B': src = months [tm->tm_mon]; goto _str;
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case 'p': src = ampm [tm->tm_hour > 12 ? 3 : 2]; goto _str;
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case 'P': src = ampm [tm->tm_hour > 12 ? 1 : 0]; goto _str;
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case 'C': no = tm->tm_year/100 + 19; goto _no;
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case 'd': no = tm->tm_mday; goto _no;
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case 'e': no = tm->tm_mday; goto _nos;
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case 'H': no = tm->tm_hour; goto _no;
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case 'I': no = tm->tm_hour % 12; goto _no;
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case 'j': no = tm->tm_yday; goto _no;
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case 'k': no = tm->tm_hour; goto _nos;
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case 'l': no = tm->tm_hour % 12; goto _nos;
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case 'm': no = tm->tm_mon + 1; goto _no;
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case 'M': no = tm->tm_min; goto _no;
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case 'S': no = tm->tm_sec; goto _no;
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case 'u': no = tm->tm_wday ? tm->tm_wday : 7; goto _no;
|
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case 'w': no = tm->tm_wday; goto _no;
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case 'U': no = (tm->tm_yday - tm->tm_wday + 7) / 7; goto _no;
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case 'W': no = (tm->tm_yday - (tm->tm_wday - 1 + 7) % 7 + 7) / 7; goto _no;
|
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case 's': {
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time_t t = rb->mktime((struct tm*)tm);
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char buf[101];
|
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char* c;
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buf[100]=0;
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for (c=buf+99; c>buf; --c) {
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*c=(t%10)+'0';
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t/=10;
|
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if (!t) break;
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}
|
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src=c;
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goto _str;
|
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}
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case 'Z':
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#ifdef WANT_TZFILE_PARSER
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tzset(); src = tzname[0];
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#else
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src = "[unknown timezone]";
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#endif
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goto _str;
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case 'Y': i2a ( buf+0, (unsigned int)(tm->tm_year / 100 + 19) );
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i2a ( buf+2, (unsigned int)(tm->tm_year % 100) );
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src = buf;
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goto _str;
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case 'y': no = tm->tm_year % 100; goto _no;
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_no: i2a ( buf, no ); /* append number 'no' */
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src = buf;
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goto _str;
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_nos: i2a ( buf, no ); /* the same, but '0'->' ' */
|
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if (buf[0] == '0')
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buf[0] = ' ';
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src = buf;
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_str: while (*src && p < dst+max) /* append string */
|
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*p++ = *src++;
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break;
|
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};
|
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} else {
|
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*p++ = *format;
|
||||
}
|
||||
|
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if (p >= dst+max)
|
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break;
|
||||
}
|
||||
|
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*p = '\0';
|
||||
return p - dst;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue