2022-04-11 09:44:59 +02:00
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/****************************************************************************
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* libs/libc/time/lib_strptime.c
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*
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* $OpenBSD: strptime.c,v 1.11 2005/08/08 08:05:38 espie Exp $
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* $NetBSD: strptime.c,v 1.12 1998/01/20 21:39:40 mycroft Exp $
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*
|
2021-04-08 09:34:16 +02:00
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* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code was contributed to The NetBSD Foundation by Klaus Klein.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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2022-04-11 09:44:59 +02:00
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
|
2021-04-08 09:34:16 +02:00
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#include <ctype.h>
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#include <locale.h>
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#include <strings.h>
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#include <time.h>
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2022-04-11 09:44:59 +02:00
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|
/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
|
2021-04-08 09:34:16 +02:00
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|
2022-04-11 09:44:59 +02:00
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|
#define TM_YEAR_BASE 1900
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|
|
#define _ctloc(x) (g_defaulttimelocale.x)
|
2021-04-08 09:34:16 +02:00
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|
|
2022-04-11 09:44:59 +02:00
|
|
|
/* We do not implement alternate representations. However, we always
|
2021-04-08 09:34:16 +02:00
|
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|
* check whether a given modifier is allowed for a certain conversion.
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|
*/
|
2022-04-11 09:44:59 +02:00
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#define _ALT_E 0x01
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#define _ALT_O 0x02
|
2021-04-08 09:34:16 +02:00
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#define _LEGAL_ALT(x) { if (alt_format & ~(x)) return (0); }
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2022-04-11 09:44:59 +02:00
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|
/****************************************************************************
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|
|
|
* Private Data
|
|
|
|
****************************************************************************/
|
2021-04-08 09:34:16 +02:00
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|
2022-04-11 09:44:59 +02:00
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|
static const struct
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|
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{
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const char *abday[7];
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const char *day[7];
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|
const char *abmon[12];
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|
|
const char *mon[12];
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|
|
const char *am_pm[2];
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|
|
const char *d_t_fmt;
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|
const char *d_fmt;
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|
|
const char *t_fmt;
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const char *t_fmt_ampm;
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|
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} g_defaulttimelocale =
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{
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{
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"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
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},
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{
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|
"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
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|
"Friday", "Saturday"
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|
},
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{
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|
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
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|
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
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|
},
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{
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"January", "February", "March", "April", "May", "June", "July",
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|
"August", "September", "October", "November", "December"
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},
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{
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"AM", "PM"
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},
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"%a %b %d %H:%M:%S %Y",
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"%m/%d/%y",
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"%H:%M:%S",
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"%I:%M:%S %p"
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};
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|
struct century_relyear
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{
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int century;
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int relyear;
|
2021-04-08 09:34:16 +02:00
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};
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|
2022-04-11 09:44:59 +02:00
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/****************************************************************************
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* Private Functions
|
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|
****************************************************************************/
|
2021-04-08 09:34:16 +02:00
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|
2022-04-11 09:44:59 +02:00
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static int _conv_num(FAR const unsigned char **buf, FAR int *dest,
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int llim, int ulim)
|
2021-04-08 09:34:16 +02:00
|
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{
|
2022-04-11 09:44:59 +02:00
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int result = 0;
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int rulim = ulim;
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while (isspace(**buf))
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{
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(*buf)++;
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}
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if (**buf < '0' || **buf > '9')
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{
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return 0;
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}
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/* we use rulim to break out of the loop when we run out of digits */
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do
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{
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result *= 10;
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result += *(*buf)++ - '0';
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rulim /= 10;
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|
}
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|
while ((result * 10 <= ulim) && rulim && **buf >= '0' && **buf <= '9');
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if (result < llim || result > ulim)
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{
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|
return 0;
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}
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*dest = result;
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return 1;
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2021-04-08 09:34:16 +02:00
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}
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|
2022-04-11 09:44:59 +02:00
|
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|
static FAR const unsigned char *_strptime(FAR const unsigned char *buf,
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FAR const char *fmt,
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FAR struct tm *tm,
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FAR struct century_relyear *cr)
|
2021-04-08 09:34:16 +02:00
|
|
|
{
|
2022-04-11 09:44:59 +02:00
|
|
|
unsigned char c;
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FAR const unsigned char *bp;
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size_t len = 0;
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int alt_format;
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int i;
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bp = buf;
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while ((c = *fmt) != '\0')
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{
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/* Clear `alternate' modifier prior to new conversion. */
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alt_format = 0;
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2021-04-08 09:34:16 +02:00
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2022-04-11 09:44:59 +02:00
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/* Eat up white-space. */
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if (isspace(c))
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{
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while (isspace(*bp))
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bp++;
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fmt++;
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continue;
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2021-04-08 09:34:16 +02:00
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}
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|
2022-04-11 09:44:59 +02:00
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if ((c = *fmt++) != '%')
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{
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goto literal;
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}
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2021-04-08 09:34:16 +02:00
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|
2022-04-11 09:44:59 +02:00
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again:
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switch (c = *fmt++)
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{
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case '%': /* "%%" is converted to "%". */
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literal:
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if (c != *bp++)
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{
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return NULL;
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}
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2021-04-08 09:34:16 +02:00
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2022-04-11 09:44:59 +02:00
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break;
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2021-04-08 09:34:16 +02:00
|
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|
2022-04-11 09:44:59 +02:00
|
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/* "Alternative" modifiers. Just set the appropriate flag
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* and start over again.
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*/
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case 'E': /* "%E?" alternative conversion modifier. */
|
2021-04-08 09:34:16 +02:00
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|
_LEGAL_ALT(0);
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|
alt_format |= _ALT_E;
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goto again;
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|
2022-04-11 09:44:59 +02:00
|
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|
case 'O': /* "%O?" alternative conversion modifier. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
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|
|
alt_format |= _ALT_O;
|
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|
|
goto again;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
/* "Complex" conversion rules, implemented through recursion. */
|
|
|
|
|
|
|
|
case 'c': /* Date and time, using the locale's format. */
|
2021-04-08 09:34:16 +02:00
|
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|
_LEGAL_ALT(_ALT_E);
|
|
|
|
if (!(bp = _strptime(bp, _ctloc(d_t_fmt), tm, cr)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'D': /* The date as "%m/%d/%y". */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
|
|
|
if (!(bp = _strptime(bp, "%m/%d/%y", tm, cr)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'R': /* The time as "%H:%M". */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
|
|
|
if (!(bp = _strptime(bp, "%H:%M", tm, cr)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'r': /* The time as "%I:%M:%S %p". */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
|
|
|
if (!(bp = _strptime(bp, "%I:%M:%S %p", tm, cr)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'T': /* The time as "%H:%M:%S". */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
|
|
|
if (!(bp = _strptime(bp, "%H:%M:%S", tm, cr)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'X': /* The time, using the locale's format. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_E);
|
|
|
|
if (!(bp = _strptime(bp, _ctloc(t_fmt), tm, cr)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'x': /* The date, using the locale's format. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_E);
|
|
|
|
if (!(bp = _strptime(bp, _ctloc(d_fmt), tm, cr)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
/* "Elementary" conversion rules. */
|
|
|
|
|
|
|
|
case 'A': /* The day of week, using the locale's form. */
|
|
|
|
case 'a':
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
2022-04-11 09:44:59 +02:00
|
|
|
for (i = 0; i < 7; i++)
|
|
|
|
{
|
2021-04-08 09:34:16 +02:00
|
|
|
/* Full name. */
|
2022-04-11 09:44:59 +02:00
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
len = strlen(_ctloc(day[i]));
|
2022-04-11 09:44:59 +02:00
|
|
|
if (strncasecmp(_ctloc(day[i]),
|
|
|
|
(const char *)bp, len) == 0)
|
|
|
|
break;
|
2021-04-08 09:34:16 +02:00
|
|
|
|
|
|
|
/* Abbreviated name. */
|
2022-04-11 09:44:59 +02:00
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
len = strlen(_ctloc(abday[i]));
|
2022-04-11 09:44:59 +02:00
|
|
|
if (strncasecmp(_ctloc(abday[i]),
|
|
|
|
(const char *)bp, len) == 0)
|
|
|
|
break;
|
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
|
|
|
/* Nothing matched. */
|
2022-04-11 09:44:59 +02:00
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
if (i == 7)
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
|
|
|
tm->tm_wday = i;
|
|
|
|
bp += len;
|
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'B': /* The month, using the locale's form. */
|
|
|
|
case 'b':
|
|
|
|
case 'h':
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
2022-04-11 09:44:59 +02:00
|
|
|
for (i = 0; i < 12; i++)
|
|
|
|
{
|
2021-04-08 09:34:16 +02:00
|
|
|
/* Full name. */
|
2022-04-11 09:44:59 +02:00
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
len = strlen(_ctloc(mon[i]));
|
2022-04-11 09:44:59 +02:00
|
|
|
if (strncasecmp(_ctloc(mon[i]),
|
|
|
|
(const char *)bp, len) == 0)
|
|
|
|
{
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
2022-04-11 09:44:59 +02:00
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
|
|
|
/* Abbreviated name. */
|
2022-04-11 09:44:59 +02:00
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
len = strlen(_ctloc(abmon[i]));
|
2022-04-11 09:44:59 +02:00
|
|
|
if (strncasecmp(_ctloc(abmon[i]),
|
|
|
|
(const char *)bp, len) == 0)
|
|
|
|
{
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
2022-04-11 09:44:59 +02:00
|
|
|
}
|
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
|
|
|
/* Nothing matched. */
|
2022-04-11 09:44:59 +02:00
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
if (i == 12)
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
|
|
|
tm->tm_mon = i;
|
|
|
|
bp += len;
|
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'C': /* The century number. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_E);
|
|
|
|
if (!(_conv_num(&bp, &i, 0, 99)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
2021-04-08 09:34:16 +02:00
|
|
|
return (NULL);
|
2022-04-11 09:44:59 +02:00
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
|
|
|
cr->century = i * 100;
|
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'd': /* The day of month. */
|
|
|
|
case 'e':
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_O);
|
|
|
|
if (!(_conv_num(&bp, &tm->tm_mday, 1, 31)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
2021-04-08 09:34:16 +02:00
|
|
|
return (NULL);
|
2022-04-11 09:44:59 +02:00
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'k': /* The hour (24-hour clock representation). */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
2022-04-11 09:44:59 +02:00
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
/* FALLTHROUGH */
|
2022-04-11 09:44:59 +02:00
|
|
|
|
|
|
|
case 'H':
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_O);
|
|
|
|
if (!(_conv_num(&bp, &tm->tm_hour, 0, 23)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'l': /* The hour (12-hour clock representation). */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
2022-04-11 09:44:59 +02:00
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
/* FALLTHROUGH */
|
2022-04-11 09:44:59 +02:00
|
|
|
|
|
|
|
case 'I':
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_O);
|
|
|
|
if (!(_conv_num(&bp, &tm->tm_hour, 1, 12)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
2021-04-08 09:34:16 +02:00
|
|
|
return (NULL);
|
2022-04-11 09:44:59 +02:00
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'j': /* The day of year. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
|
|
|
if (!(_conv_num(&bp, &tm->tm_yday, 1, 366)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
tm->tm_yday--;
|
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'M': /* The minute. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_O);
|
|
|
|
if (!(_conv_num(&bp, &tm->tm_min, 0, 59)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'm': /* The month. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_O);
|
|
|
|
if (!(_conv_num(&bp, &tm->tm_mon, 1, 12)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
tm->tm_mon--;
|
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'p': /* The locale's equivalent of AM/PM. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
2022-04-11 09:44:59 +02:00
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
/* AM? */
|
2022-04-11 09:44:59 +02:00
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
len = strlen(_ctloc(am_pm[0]));
|
2022-04-11 09:44:59 +02:00
|
|
|
if (strncasecmp(_ctloc(am_pm[0]), (const char *)bp, len) == 0)
|
|
|
|
{
|
|
|
|
if (tm->tm_hour > 12) /* i.e., 13:00 AM ?! */
|
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
else if (tm->tm_hour == 12)
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
2021-04-08 09:34:16 +02:00
|
|
|
tm->tm_hour = 0;
|
2022-04-11 09:44:59 +02:00
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
|
|
|
bp += len;
|
|
|
|
break;
|
2022-04-11 09:44:59 +02:00
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
/* PM? */
|
2022-04-11 09:44:59 +02:00
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
len = strlen(_ctloc(am_pm[1]));
|
2022-04-11 09:44:59 +02:00
|
|
|
if (strncasecmp(_ctloc(am_pm[1]), (const char *)bp, len) == 0)
|
|
|
|
{
|
|
|
|
if (tm->tm_hour > 12) /* i.e., 13:00 PM ?! */
|
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
else if (tm->tm_hour < 12)
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
2021-04-08 09:34:16 +02:00
|
|
|
tm->tm_hour += 12;
|
2022-04-11 09:44:59 +02:00
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
|
|
|
bp += len;
|
|
|
|
break;
|
2022-04-11 09:44:59 +02:00
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
|
|
|
/* Nothing matched. */
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
return NULL;
|
|
|
|
|
|
|
|
case 'S': /* The seconds. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_O);
|
|
|
|
if (!(_conv_num(&bp, &tm->tm_sec, 0, 61)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'U': /* The week of year, beginning on sunday. */
|
|
|
|
case 'W': /* The week of year, beginning on monday. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_O);
|
2022-04-11 09:44:59 +02:00
|
|
|
/* XXX This is bogus, as we can not assume any valid
|
|
|
|
* information present in the tm structure at this
|
|
|
|
* point to calculate a real value, so just check the
|
|
|
|
* range for now.
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (!(_conv_num(&bp, &i, 0, 53)))
|
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
2021-04-08 09:34:16 +02:00
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'w': /* The day of week, beginning on sunday. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_O);
|
|
|
|
if (!(_conv_num(&bp, &tm->tm_wday, 0, 6)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'Y': /* The year. */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_E);
|
|
|
|
if (!(_conv_num(&bp, &i, 0, 9999)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
|
|
|
cr->relyear = -1;
|
|
|
|
tm->tm_year = i - TM_YEAR_BASE;
|
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
case 'y': /* The year within the century (2 digits). */
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(_ALT_E | _ALT_O);
|
|
|
|
if (!(_conv_num(&bp, &cr->relyear, 0, 99)))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2021-04-08 09:34:16 +02:00
|
|
|
break;
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
/* Miscellaneous conversions. */
|
|
|
|
|
|
|
|
case 'n': /* Any kind of white-space. */
|
|
|
|
case 't':
|
2021-04-08 09:34:16 +02:00
|
|
|
_LEGAL_ALT(0);
|
|
|
|
while (isspace(*bp))
|
2022-04-11 09:44:59 +02:00
|
|
|
{
|
2021-04-08 09:34:16 +02:00
|
|
|
bp++;
|
2022-04-11 09:44:59 +02:00
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
break;
|
2021-04-08 09:34:16 +02:00
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
default: /* Unknown/unsupported conversion. */
|
|
|
|
return NULL;
|
2021-04-08 09:34:16 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
/* We need to evaluate the two digit year spec (%y)
|
|
|
|
* last as we can get a century spec (%C) at any time.
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (cr->relyear != -1)
|
|
|
|
{
|
|
|
|
if (cr->century == TM_YEAR_BASE)
|
|
|
|
{
|
|
|
|
if (cr->relyear <= 68)
|
|
|
|
{
|
|
|
|
tm->tm_year = cr->relyear + 2000 - TM_YEAR_BASE;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
tm->tm_year = cr->relyear + 1900 - TM_YEAR_BASE;
|
2021-04-08 09:34:16 +02:00
|
|
|
}
|
|
|
|
}
|
2022-04-11 09:44:59 +02:00
|
|
|
else
|
|
|
|
{
|
|
|
|
tm->tm_year = cr->relyear + cr->century - TM_YEAR_BASE;
|
|
|
|
}
|
|
|
|
}
|
2021-04-08 09:34:16 +02:00
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
return bp;
|
2021-04-08 09:34:16 +02:00
|
|
|
}
|
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
/****************************************************************************
|
|
|
|
* Public Functions
|
|
|
|
****************************************************************************/
|
2021-04-08 09:34:16 +02:00
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
/****************************************************************************
|
|
|
|
* Name: strptime
|
|
|
|
*
|
|
|
|
* Description:
|
|
|
|
* Convert a string to a time type according to a specific time format
|
|
|
|
* The strptime() function processes the input string from left to
|
|
|
|
* right. Each of the three possible input elements (whitespace,
|
|
|
|
* literal, or format) are handled one after the other. If the
|
|
|
|
* input cannot be matched to the format string, the function stops.
|
|
|
|
* The remainder of the format and input strings are not processed.
|
|
|
|
* The supported input field descriptors are listed below. In case
|
|
|
|
* a text string (such as the name of a day of the week or a month
|
|
|
|
* name) is to be matched, the comparison is case insensitive. In
|
|
|
|
* case a number is to be matched, leading zeros are permitted but
|
|
|
|
* not required.
|
|
|
|
* %a The abbreviated weekday name according to the current locale.
|
|
|
|
* %A The full weekday name according to the current locale.
|
|
|
|
* %b The abbreviated month name according to the current locale.
|
|
|
|
* %B The full month name according to the current locale.
|
|
|
|
* %C The century number (year/100) as a 2-digit integer. (SU)
|
|
|
|
* %d The day of the month as a decimal number (range 01 to 31).
|
|
|
|
* %e Like %d, the day of the month as a decimal number, but a leading
|
|
|
|
* zero is replaced by a space.
|
|
|
|
* %h Equivalent to %b. (SU)
|
|
|
|
* %H The hour as a decimal number using a 24-hour clock
|
|
|
|
* (range 00 to 23).
|
|
|
|
* %I The hour as a decimal number using a 12-hour clock
|
|
|
|
* (range 01 to 12).
|
|
|
|
* %j The day of the year as a decimal number (range 001 to 366).
|
|
|
|
* %k The hour (24-hour clock) as a decimal number (range 0 to 23);
|
|
|
|
* single digits are preceded by a blank. (See also %H.) (TZ)
|
|
|
|
* %l The hour (12-hour clock) as a decimal number (range 1 to 12);
|
|
|
|
* single digits are preceded by a blank. (See also %I.) (TZ)
|
|
|
|
* %m The month as a decimal number (range 01 to 12).
|
|
|
|
* %M The minute as a decimal number (range 00 to 59).
|
|
|
|
* %n A newline character. (SU)
|
|
|
|
* %p Either "AM" or "PM" according to the given time value, or the
|
|
|
|
* corresponding strings for the current locale. Noon is treated
|
|
|
|
* as "PM" and midnight as "AM".
|
|
|
|
* %P Like %p but in lowercase: "am" or "pm" or a corresponding string
|
|
|
|
* for the current locale. (GNU)
|
|
|
|
* %S The second as a decimal number (range 00 to 60). (The range is
|
|
|
|
* up to 60 to allow for occasional leap seconds.)
|
|
|
|
* %t A tab character. (SU)
|
|
|
|
* %y The year as a decimal number without a century (range 00 to 99).
|
|
|
|
* %Y The year as a decimal number including the century.
|
|
|
|
* %% A literal '%' character.
|
|
|
|
*
|
|
|
|
* Returned Value:
|
|
|
|
* The return value of the function is a pointer to the first
|
|
|
|
* character not processed in this function call. In case the input
|
|
|
|
* string contains more characters than required by the format
|
|
|
|
* string, the return value points right after the last consumed
|
|
|
|
* input character. In case the whole input string is consumed, the
|
|
|
|
* return value points to the null byte at the end of the string.
|
|
|
|
* If strptime() fails to match all of the format string and
|
|
|
|
* therefore an error occurred, the function returns NULL.
|
|
|
|
*
|
|
|
|
****************************************************************************/
|
2021-04-08 09:34:16 +02:00
|
|
|
|
2022-04-11 09:44:59 +02:00
|
|
|
FAR char *strptime(FAR const char *buf, FAR const char *fmt,
|
|
|
|
FAR struct tm *tm)
|
|
|
|
{
|
|
|
|
struct century_relyear cr;
|
|
|
|
cr.century = TM_YEAR_BASE;
|
|
|
|
cr.relyear = -1;
|
|
|
|
return (FAR char *)(_strptime((FAR const unsigned char *)buf,
|
|
|
|
fmt, tm, &cr));
|
2021-04-08 09:34:16 +02:00
|
|
|
}
|