timezone.c

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/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright 2001-2004, ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <reent.h>
 
#include <ps2sdkapi.h>
#define OSD_CONFIG_NO_LIBCDVD
#include "osd_config.h"
 
#define posixIODriver { open, close, (int (*)(int, void *, int))read, O_RDONLY }
 
#ifdef F__libcglue_timezone_update_impl
void _libcglue_timezone_update_impl()
{
    /* Initialize timezone from PS2 OSD configuration */
    _io_driver driver = posixIODriver;
    int tzOffset = configGetTimezoneWithIODriver(&driver);
    int tzOffsetAbs = tzOffset < 0 ? -tzOffset : tzOffset;
    int hours = tzOffsetAbs / 60;
    int minutes = tzOffsetAbs - hours * 60;
    int daylight = configIsDaylightSavingEnabledWithIODriver(&driver);
    static char tz[15];
    #pragma GCC diagnostic push
    #pragma GCC diagnostic ignored "-Wformat-overflow"
    sprintf(tz, "GMT%s%02i:%02i%s", tzOffset < 0 ? "+" : "-", hours, minutes, daylight ? "DST" : "");
    #pragma GCC diagnostic pop
    setenv("TZ", tz, 1);
}
#endif
 
#ifdef F__libcglue_timezone_update
// Defined in newlib: newlib/libc/time/tzset_r.c
void __attribute((weak)) _tzset_unlocked_r(struct _reent *reent_ptr);
__attribute__((weak))
void _libcglue_timezone_update()
{
    // cppcheck-suppress knownConditionTrueFalse
    if (&_tzset_unlocked_r)
    {
        _libcglue_timezone_update_impl();
    }
}
#endif
 
#ifdef F_ps2sdk_setTimezone
void ps2sdk_setTimezone(int timezone) {
    _io_driver driver = posixIODriver;
    configSetTimezoneWithIODriver(timezone, &driver, _libcglue_timezone_update);
}
#endif
 
#ifdef F_ps2sdk_setDaylightSaving
void ps2sdk_setDaylightSaving(int daylightSaving) {
    _io_driver driver = posixIODriver;
    configSetDaylightSavingEnabledWithIODriver(daylightSaving, &driver, _libcglue_timezone_update);
}
#endif