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"
 
void _libcglue_timezone_update_impl()
{
    /* Initialize timezone from PS2 OSD configuration */
    int tzOffset = configGetTimezone();
    int tzOffsetAbs = tzOffset < 0 ? -tzOffset : tzOffset;
    int hours = tzOffsetAbs / 60;
    int minutes = tzOffsetAbs - hours * 60;
    int daylight = configIsDaylightSavingEnabled();
    static char tz[28];
    #pragma GCC diagnostic push
    #pragma GCC diagnostic ignored "-Wformat-overflow"
    snprintf(tz, sizeof(tz), "GMT%s%02i:%02i%s", tzOffset < 0 ? "+" : "-", hours, minutes, daylight ? "DST" : "");
    #pragma GCC diagnostic pop
    setenv("TZ", tz, 1);
}
 
// 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();
    }
}
 
void ps2sdk_setTimezone(int timezone) {
    configSetTimezone(timezone);
    _libcglue_timezone_update();
}
 
void ps2sdk_setDaylightSaving(int daylightSaving) {
    configSetDaylightSavingEnabled(daylightSaving);
    _libcglue_timezone_update();
}