kolibrios/programs/fs/unzip60/macos/source/mactime.h

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/*
Copyright (c) 1990-2000 Info-ZIP. All rights reserved.
See the accompanying file LICENSE, version 2000-Apr-09 or later
(the contents of which are also included in zip.h) for terms of use.
If, for some reason, all these files are missing, the Info-ZIP license
also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html
*/
#ifndef _MACTIME_H_
#define _MACTIME_H_
/* -----------------------------------------------------------------------------
The original functions (Metrowerks Codewarrior pro 3.0) gmtime, localtime,
mktime and time do not work correctly. The supplied link library mactime.c
contains replacement functions for them.
* Caveat: On a Mac, we only know the GMT and DST offsets for
* the current time, not for the time in question.
* Mac has no support for DST handling.
* DST changeover is all manually set by the user.
------------------------------------------------------------------------------*/
#include <time.h>
#include <mactypes.h>
/*****************************************************************************/
/* Macros, typedefs */
/*****************************************************************************/
/*
* ARGH. Mac times are based on 1904 Jan 1 00:00, not 1970 Jan 1 00:00.
* So we have to diddle time_t's appropriately: add or subtract 66 years'
* worth of seconds == number of days times 86400 == (66*365 regular days +
* 17 leap days ) * 86400 == (24090 + 17) * 86400 == 2082844800L seconds.
* We hope time_t is an unsigned long (ulg) on the Macintosh...
*/
/*
This Offset is only used by MacFileDate_to_UTime()
*/
#define MACOS_TO_UNIX(x) (x) -= (unsigned long)MacOS_2_Unix
#define UNIX_TO_MACOS(x) (x) += (unsigned long)MacOS_2_Unix
/*
The MacOS function GetDateTime returns the
number of seconds elapsed since midnight, January 1, 1904.
*/
extern const unsigned long MacOS_2_Unix;
/* prototypes for public utility functions */
time_t MacFtime2UnixFtime(unsigned long macftime);
unsigned long UnixFtime2MacFtime(time_t unxftime);
time_t AdjustForTZmoveMac(unsigned long macloctim, long s_gmtoffs);
Boolean GetGMToffsetMac(unsigned long macftime, long *UTCoffset);
#endif