asctime.c File Reference

#include <precomp.h>
#include <tchar.h>
#include <time.h>
#include "bitsfixup.h"

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Classes
union	timebuf_t

Macros
#define	DAYSPERWEEK   7
#define	MONSPERYEAR   12
#define	HUNDREDYEAROFFSET   19

Typedefs
typedef unsigned long	_TCHAR4
typedef unsigned short	_TCHAR2

Functions
FORCEINLINE _TCHAR2	IntToChar2 (int x)
static __inline void	FillBuf (timebuf_t *buf, const struct tm *ptm)
errno_t	_tasctime_s (_TCHAR *buffer, size_t numberOfElements, const struct tm *ptm)
_TCHAR *	_tasctime (const struct tm *ptm)

Variables
static const _TCHAR	wday_name [DAYSPERWEEK][5]
static const _TCHAR	mon_name [MONSPERYEAR][5]

Macro Definition Documentation

DAYSPERWEEK

#define DAYSPERWEEK   7

Definition at line 13 of file asctime.c.

HUNDREDYEAROFFSET

#define HUNDREDYEAROFFSET   19

Definition at line 15 of file asctime.c.

MONSPERYEAR

#define MONSPERYEAR   12

Definition at line 14 of file asctime.c.

Typedef Documentation

_TCHAR2

typedef unsigned short _TCHAR2

Definition at line 34 of file asctime.c.

_TCHAR4

typedef unsigned long _TCHAR4

Definition at line 33 of file asctime.c.

Function Documentation

_tasctime()

_TCHAR * _tasctime

(

const struct tm *

ptm

)

Definition at line 150 of file asctime.c.

{
    thread_data_t *data = msvcrt_get_thread_data();
    _TCHAR *pstr;
 
#ifndef _UNICODE
    pstr = data->asctime_buffer;
#else
    pstr = data->wasctime_buffer;
#endif
 
    if(!pstr)
        pstr = malloc(sizeof(struct tm));
 
    /* Fill the buffer */
    FillBuf((timebuf_t*)pstr, ptm);
 
    return pstr;
}

_tasctime_s()

errno_t _tasctime_s	(	_TCHAR *	buffer,
		size_t	numberOfElements,
		const struct tm *	ptm
	)

Definition at line 106 of file asctime.c.

{
    /* Validate parameters */
    if (!buffer || numberOfElements < 26 || !ptm ||
        (unsigned int)ptm->tm_sec > 59 ||
        (unsigned int)ptm->tm_min > 59 ||
        (unsigned int)ptm->tm_hour > 23 ||
        (unsigned int)ptm->tm_mday > 31 ||
        (unsigned int)ptm->tm_mon > 11 ||
        (unsigned int)ptm->tm_year > 2038 ||
        (unsigned int)ptm->tm_wday > 6 ||
        (unsigned int)ptm->tm_yday > 365)
    {
#if 0
        _invalid_parameter(NULL,
#ifdef UNICODE
                            L"_wasctime",
#else
                            L"asctime",
#endif
                           _CRT_WIDE(__FILE__),
                           __LINE__,
                           0);
#endif
        return EINVAL;
    }
 
    /* Fill the buffer */
    FillBuf((timebuf_t*)buffer, ptm);
 
    return 0;
}

FillBuf()

static __inline void FillBuf ( timebuf_t *  buf, const struct tm *  ptm  )

static

Definition at line 78 of file asctime.c.

{
    /* Format looks like this:
     * "Sun Mar 01 12:34:56 1902\n\0" */
    buf->WeekDay = *(_TCHAR4*)wday_name[ptm->tm_wday];
    buf->Month = *(_TCHAR4*)mon_name[ptm->tm_mon];
    buf->Day = IntToChar2(ptm->tm_mday);
    buf->Space1 = ' ';
    buf->Hour = IntToChar2(ptm->tm_hour);
    buf->Sep1 = ':';
    buf->Minute = IntToChar2(ptm->tm_min);
    buf->Sep2 = ':';
    buf->Second = IntToChar2(ptm->tm_sec);
    buf->Space2 = ' ';
    buf->Year[0] = IntToChar2(ptm->tm_year / 100 + HUNDREDYEAROFFSET);
    buf->Year[1] = IntToChar2(ptm->tm_year % 100);
    buf->lb = '\n';
    buf->zt = '\0';
}

Referenced by _tasctime(), and _tasctime_s().

IntToChar2()

FORCEINLINE _TCHAR2 IntToChar2

(

int

x

)

Definition at line 62 of file asctime.c.

{
    union
    {
        _TCHAR2 char2;
        _TCHAR array[2];
    } u;
 
    u.array[0] = '0' + (x / 10);
    u.array[1] = '0' + (x % 10);
 
    return u.char2;
}

Referenced by FillBuf().

Variable Documentation

mon_name

const _TCHAR mon_name[MONSPERYEAR][5]

static

Initial value:

=
{
    _T("Jan "), _T("Feb "), _T("Mar "), _T("Apr "), _T("May "), _T("Jun "),
    _T("Jul "), _T("Aug "), _T("Sep "), _T("Oct "), _T("Nov "), _T("Dec ")
}

Definition at line 23 of file asctime.c.

Referenced by FillBuf().

wday_name

const _TCHAR wday_name[DAYSPERWEEK][5]

static

Initial value:

=
{
    _T("Sun "), _T("Mon "), _T("Tue "), _T("Wed "),
    _T("Thu "), _T("Fri "), _T("Sat ")
}

Definition at line 17 of file asctime.c.

Referenced by FillBuf().