/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018
* Jonathan Schleifer <js@heap.zone>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#include <inttypes.h>
#include <limits.h>
#include <time.h>
#include <math.h>
#include <sys/time.h>
#import "OFDate.h"
#import "OFString.h"
#import "OFDictionary.h"
#import "OFXMLElement.h"
#ifdef OF_HAVE_THREADS
# import "OFMutex.h"
#endif
#import "OFSystemInfo.h"
#import "OFInitializationFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFOutOfRangeException.h"
#import "of_strptime.h"
#if (!defined(HAVE_GMTIME_R) || !defined(HAVE_LOCALTIME_R)) && \
defined(OF_HAVE_THREADS)
static OFMutex *mutex;
#endif
#ifdef HAVE_GMTIME_R
# define GMTIME_RET(field) \
time_t seconds = (time_t)_seconds; \
struct tm tm; \
\
if (seconds != floor(_seconds)) \
@throw [OFOutOfRangeException exception]; \
\
if (gmtime_r(&seconds, &tm) == NULL) \
@throw [OFOutOfRangeException exception]; \
\
return tm.field;
# define LOCALTIME_RET(field) \
time_t seconds = (time_t)_seconds; \
struct tm tm; \
\
if (seconds != floor(_seconds)) \
@throw [OFOutOfRangeException exception]; \
\
if (localtime_r(&seconds, &tm) == NULL) \
@throw [OFOutOfRangeException exception]; \
\
return tm.field;
#else
# ifdef OF_HAVE_THREADS
# define GMTIME_RET(field) \
time_t seconds = (time_t)_seconds; \
struct tm *tm; \
\
if (seconds != floor(_seconds)) \
@throw [OFOutOfRangeException exception]; \
\
[mutex lock]; \
\
@try { \
if ((tm = gmtime(&seconds)) == NULL) \
@throw [OFOutOfRangeException exception]; \
\
return tm->field; \
} @finally { \
[mutex unlock]; \
}
# define LOCALTIME_RET(field) \
time_t seconds = (time_t)_seconds; \
struct tm *tm; \
\
if (seconds != floor(_seconds)) \
@throw [OFOutOfRangeException exception]; \
\
[mutex lock]; \
\
@try { \
if ((tm = localtime(&seconds)) == NULL) \
@throw [OFOutOfRangeException exception]; \
\
return tm->field; \
} @finally { \
[mutex unlock]; \
}
# else
# define GMTIME_RET(field) \
time_t seconds = (time_t)_seconds; \
struct tm *tm; \
\
if (seconds != floor(_seconds)) \
@throw [OFOutOfRangeException exception]; \
\
if ((tm = gmtime(&seconds)) == NULL) \
@throw [OFOutOfRangeException exception]; \
\
return tm->field;
# define LOCALTIME_RET(field) \
time_t seconds = (time_t)_seconds; \
struct tm *tm; \
\
if (seconds != floor(_seconds)) \
@throw [OFOutOfRangeException exception]; \
\
if ((tm = localtime(&seconds)) == NULL) \
@throw [OFOutOfRangeException exception]; \
\
return tm->field;
# endif
#endif
static int monthToDayOfYear[12] = {
0,
31,
31 + 28,
31 + 28 + 31,
31 + 28 + 31 + 30,
31 + 28 + 31 + 30 + 31,
31 + 28 + 31 + 30 + 31 + 30,
31 + 28 + 31 + 30 + 31 + 30 + 31,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
};
static double
tmAndTzToTime(struct tm *tm, int16_t *tz)
{
double seconds;
/* Years */
seconds = (int64_t)(tm->tm_year - 70) * 31536000;
/* Days of leap years, excluding the year to look at */
seconds += (((tm->tm_year + 1899) / 4) - 492) * 86400;
seconds -= (((tm->tm_year + 1899) / 100) - 19) * 86400;
seconds += (((tm->tm_year + 1899) / 400) - 4) * 86400;
/* Leap day */
if (tm->tm_mon >= 2 && (((tm->tm_year + 1900) % 4 == 0 &&
(tm->tm_year + 1900) % 100 != 0) ||
(tm->tm_year + 1900) % 400 == 0))
seconds += 86400;
/* Months */
if (tm->tm_mon < 0 || tm->tm_mon > 12)
@throw [OFInvalidFormatException exception];
seconds += monthToDayOfYear[tm->tm_mon] * 86400;
/* Days */
seconds += (tm->tm_mday - 1) * 86400;
/* Hours */
seconds += tm->tm_hour * 3600;
/* Minutes */
seconds += tm->tm_min * 60;
/* Seconds */
seconds += tm->tm_sec;
/* Time zone */
seconds += -(float)*tz * 60;
return seconds;
}
@implementation OFDate
#if (!defined(HAVE_GMTIME_R) || !defined(HAVE_LOCALTIME_R)) && \
defined(OF_HAVE_THREADS)
+ (void)initialize
{
if (self == [OFDate class])
mutex = [[OFMutex alloc] init];
}
#endif
+ (instancetype)date
{
return [[[self alloc] init] autorelease];
}
+ (instancetype)dateWithTimeIntervalSince1970: (of_time_interval_t)seconds
{
return [[[self alloc]
initWithTimeIntervalSince1970: seconds] autorelease];
}
+ (instancetype)dateWithTimeIntervalSinceNow: (of_time_interval_t)seconds
{
return [[[self alloc]
initWithTimeIntervalSinceNow: seconds] autorelease];
}
+ (instancetype)dateWithDateString: (OFString *)string
format: (OFString *)format
{
return [[[self alloc] initWithDateString: string
format: format] autorelease];
}
+ (instancetype)dateWithLocalDateString: (OFString *)string
format: (OFString *)format
{
return [[[self alloc] initWithLocalDateString: string
format: format] autorelease];
}
+ (instancetype)distantFuture
{
return [[[self alloc]
initWithTimeIntervalSince1970: 64060588800.0] autorelease];
}
+ (instancetype)distantPast
{
return [[[self alloc]
initWithTimeIntervalSince1970: -62167219200.0] autorelease];
}
- (instancetype)init
{
struct timeval t;
self = [super init];
OF_ENSURE(gettimeofday(&t, NULL) == 0);
_seconds = t.tv_sec;
_seconds += (of_time_interval_t)t.tv_usec / 1000000;
return self;
}
- (instancetype)initWithTimeIntervalSince1970: (of_time_interval_t)seconds
{
self = [super init];
_seconds = seconds;
return self;
}
- (instancetype)initWithTimeIntervalSinceNow: (of_time_interval_t)seconds
{
self = [self init];
_seconds += seconds;
return self;
}
- (instancetype)initWithDateString: (OFString *)string
format: (OFString *)format
{
self = [super init];
@try {
const char *UTF8String = [string UTF8String];
struct tm tm = { 0 };
int16_t tz = 0;
tm.tm_isdst = -1;
if (of_strptime(UTF8String, [format UTF8String],
&tm, &tz) != UTF8String + [string UTF8StringLength])
@throw [OFInvalidFormatException exception];
_seconds = tmAndTzToTime(&tm, &tz);
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (instancetype)initWithLocalDateString: (OFString *)string
format: (OFString *)format
{
self = [super init];
@try {
const char *UTF8String = [string UTF8String];
struct tm tm = { 0 };
/*
* of_strptime() can never set this to INT16_MAX, no matter
* what is passed to it, so this is a safe way to figure out if
* the date contains a time zone.
*/
int16_t tz = INT16_MAX;
tm.tm_isdst = -1;
if (of_strptime(UTF8String, [format UTF8String],
&tm, &tz) != UTF8String + [string UTF8StringLength])
@throw [OFInvalidFormatException exception];
if (tz == INT16_MAX) {
#ifndef OF_WINDOWS
if ((_seconds = mktime(&tm)) == -1)
@throw [OFInvalidFormatException exception];
#else
if ((_seconds = _mktime64(&tm)) == -1)
@throw [OFInvalidFormatException exception];
#endif
} else
_seconds = tmAndTzToTime(&tm, &tz);
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (instancetype)initWithSerialization: (OFXMLElement *)element
{
self = [super init];
@try {
void *pool = objc_autoreleasePoolPush();
union {
double d;
uint64_t u;
} d;
if (![[element name] isEqual: [self className]] ||
![[element namespace] isEqual: OF_SERIALIZATION_NS])
@throw [OFInvalidArgumentException exception];
d.u = OF_BSWAP64_IF_LE((uint64_t)[element hexadecimalValue]);
_seconds = OF_BSWAP_DOUBLE_IF_LE(d.d);
objc_autoreleasePoolPop(pool);
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (bool)isEqual: (id)object
{
OFDate *otherDate;
if (object == self)
return true;
if (![object isKindOfClass: [OFDate class]])
return false;
otherDate = object;
if (otherDate->_seconds != _seconds)
return false;
return true;
}
- (uint32_t)hash
{
uint32_t hash;
union {
double d;
uint8_t b[sizeof(double)];
} d;
d.d = OF_BSWAP_DOUBLE_IF_BE(_seconds);
OF_HASH_INIT(hash);
for (size_t i = 0; i < sizeof(double); i++)
OF_HASH_ADD(hash, d.b[i]);
OF_HASH_FINALIZE(hash);
return hash;
}
- (id)copy
{
return [self retain];
}
- (of_comparison_result_t)compare: (id <OFComparing>)object
{
OFDate *otherDate;
if (![(id)object isKindOfClass: [OFDate class]])
@throw [OFInvalidArgumentException exception];
otherDate = (OFDate *)object;
if (_seconds < otherDate->_seconds)
return OF_ORDERED_ASCENDING;
if (_seconds > otherDate->_seconds)
return OF_ORDERED_DESCENDING;
return OF_ORDERED_SAME;
}
- (OFString *)description
{
return [self dateStringWithFormat: @"%Y-%m-%dT%H:%M:%SZ"];
}
- (OFXMLElement *)XMLElementBySerializing
{
void *pool = objc_autoreleasePoolPush();
OFXMLElement *element;
union {
double d;
uint64_t u;
} d;
element = [OFXMLElement elementWithName: [self className]
namespace: OF_SERIALIZATION_NS];
d.d = OF_BSWAP_DOUBLE_IF_LE(_seconds);
[element setStringValue:
[OFString stringWithFormat: @"%016" PRIx64, OF_BSWAP64_IF_LE(d.u)]];
[element retain];
objc_autoreleasePoolPop(pool);
return [element autorelease];
}
- (uint32_t)microsecond
{
return (uint32_t)((_seconds - floor(_seconds)) * 1000000);
}
- (uint8_t)second
{
GMTIME_RET(tm_sec)
}
- (uint8_t)minute
{
GMTIME_RET(tm_min)
}
- (uint8_t)localMinute
{
LOCALTIME_RET(tm_min)
}
- (uint8_t)hour
{
GMTIME_RET(tm_hour)
}
- (uint8_t)localHour
{
LOCALTIME_RET(tm_hour)
}
- (uint8_t)dayOfMonth
{
GMTIME_RET(tm_mday)
}
- (uint8_t)localDayOfMonth
{
LOCALTIME_RET(tm_mday)
}
- (uint8_t)monthOfYear
{
GMTIME_RET(tm_mon + 1)
}
- (uint8_t)localMonthOfYear
{
LOCALTIME_RET(tm_mon + 1)
}
- (uint16_t)year
{
GMTIME_RET(tm_year + 1900)
}
- (uint16_t)localYear
{
LOCALTIME_RET(tm_year + 1900)
}
- (uint8_t)dayOfWeek
{
GMTIME_RET(tm_wday)
}
- (uint8_t)localDayOfWeek
{
LOCALTIME_RET(tm_wday)
}
- (uint16_t)dayOfYear
{
GMTIME_RET(tm_yday + 1)
}
- (uint16_t)localDayOfYear
{
LOCALTIME_RET(tm_yday + 1)
}
- (OFString *)dateStringWithFormat: (OFConstantString *)format
{
OFString *ret;
time_t seconds = (time_t)_seconds;
struct tm tm;
size_t pageSize;
#ifndef OF_WINDOWS
char *buffer;
#else
wchar_t *buffer;
#endif
if (seconds != floor(_seconds))
@throw [OFOutOfRangeException exception];
#ifdef HAVE_GMTIME_R
if (gmtime_r(&seconds, &tm) == NULL)
@throw [OFOutOfRangeException exception];
#else
# ifdef OF_HAVE_THREADS
[mutex lock];
@try {
# endif
struct tm *tmp;
if ((tmp = gmtime(&seconds)) == NULL)
@throw [OFOutOfRangeException exception];
tm = *tmp;
# ifdef OF_HAVE_THREADS
} @finally {
[mutex unlock];
}
# endif
#endif
pageSize = [OFSystemInfo pageSize];
buffer = [self allocMemoryWithSize: pageSize];
@try {
#ifndef OF_WINDOWS
if (strftime(buffer, pageSize, [format UTF8String], &tm) == 0)
@throw [OFOutOfRangeException exception];
ret = [OFString stringWithUTF8String: buffer];
#else
if (wcsftime(buffer, pageSize / sizeof(wchar_t),
[format UTF16String], &tm) == 0)
@throw [OFOutOfRangeException exception];
ret = [OFString stringWithUTF16String: buffer];
#endif
} @finally {
[self freeMemory: buffer];
}
return ret;
}
- (OFString *)localDateStringWithFormat: (OFConstantString *)format
{
OFString *ret;
time_t seconds = (time_t)_seconds;
struct tm tm;
size_t pageSize;
#ifndef OF_WINDOWS
char *buffer;
#else
wchar_t *buffer;
#endif
if (seconds != floor(_seconds))
@throw [OFOutOfRangeException exception];
#ifdef HAVE_LOCALTIME_R
if (localtime_r(&seconds, &tm) == NULL)
@throw [OFOutOfRangeException exception];
#else
# ifdef OF_HAVE_THREADS
[mutex lock];
@try {
# endif
struct tm *tmp;
if ((tmp = localtime(&seconds)) == NULL)
@throw [OFOutOfRangeException exception];
tm = *tmp;
# ifdef OF_HAVE_THREADS
} @finally {
[mutex unlock];
}
# endif
#endif
pageSize = [OFSystemInfo pageSize];
buffer = [self allocMemoryWithSize: pageSize];
@try {
#ifndef OF_WINDOWS
if (strftime(buffer, pageSize, [format UTF8String], &tm) == 0)
@throw [OFOutOfRangeException exception];
ret = [OFString stringWithUTF8String: buffer];
#else
if (wcsftime(buffer, pageSize / sizeof(wchar_t),
[format UTF16String], &tm) == 0)
@throw [OFOutOfRangeException exception];
ret = [OFString stringWithUTF16String: buffer];
#endif
} @finally {
[self freeMemory: buffer];
}
return ret;
}
- (OFDate *)earlierDate: (OFDate *)otherDate
{
if (otherDate == nil)
return self;
if ([self compare: otherDate] == OF_ORDERED_DESCENDING)
return otherDate;
return self;
}
- (OFDate *)laterDate: (OFDate *)otherDate
{
if (otherDate == nil)
return self;
if ([self compare: otherDate] == OF_ORDERED_ASCENDING)
return otherDate;
return self;
}
- (of_time_interval_t)timeIntervalSince1970
{
return _seconds;
}
- (of_time_interval_t)timeIntervalSinceDate: (OFDate *)otherDate
{
return _seconds - otherDate->_seconds;
}
- (of_time_interval_t)timeIntervalSinceNow
{
struct timeval t;
of_time_interval_t seconds;
OF_ENSURE(gettimeofday(&t, NULL) == 0);
seconds = t.tv_sec;
seconds += (of_time_interval_t)t.tv_usec / 1000000;
return _seconds - seconds;
}
- (OFDate *)dateByAddingTimeInterval: (of_time_interval_t)seconds
{
return [OFDate dateWithTimeIntervalSince1970: _seconds + seconds];
}
@end