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/* $Id: plugin_time.c 897 2008-10-06 04:25:14Z michael $
* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/plugin_time.c $
*
* time plugin
*
* Copyright (C) 2003, 2004 Michael Reinelt <michael@reinelt.co.at>
* Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* LCD4Linux is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
* exported functions:
*
* int plugin_init_time (void)
* adds some handy time functions
*
*/
#include "config.h"
#include <time.h>
#include <stdlib.h>
#include <string.h>
#include "debug.h"
#include "plugin.h"
static void my_time(RESULT * result)
{
double value = time(NULL);
SetResult(&result, R_NUMBER, &value);
}
static void my_strftime(RESULT * result, RESULT * arg1, RESULT * arg2)
{
char value[256];
time_t t = R2N(arg2);
value[0] = '\0';
strftime(value, sizeof(value), R2S(arg1), localtime(&t));
SetResult(&result, R_STRING, value);
}
static void my_stftime_tz(RESULT * result, RESULT * arg1, RESULT * arg2, RESULT * arg3)
{
char value[256] = "";
time_t t = R2N(arg2);
char *tz = R2S(arg3);
char *old_tz;
old_tz = getenv("TZ");
/*
* because the next setenv() call may overwrite that string, we
* duplicate it here
*/
if (old_tz) {
old_tz = strdup(old_tz);
}
setenv("TZ", tz, 1);
tzset();
strftime(value, sizeof(value), R2S(arg1), localtime(&t));
if (old_tz) {
setenv("TZ", old_tz, 1);
} else {
unsetenv("TZ");
}
tzset();
free(old_tz);
SetResult(&result, R_STRING, value);
}
int plugin_init_time(void)
{
/* register some basic time functions */
AddFunction("time", 0, my_time);
AddFunction("strftime", 2, my_strftime);
AddFunction("strftime_tz", 3, my_stftime_tz);
return 0;
}
void plugin_exit_time(void)
{
/* empty */
}
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