1 '\" te
2 .\" Copyright (c) 1992, X/Open Company Limited. All Rights Reserved.
3 .\" Portions Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved.
4 .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
5 .\" http://www.opengroup.org/bookstore/.
6 .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
7 .\" This notice shall appear on any product containing this material.
8 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
9 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
10 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
11 .TH STRPTIME 3C "Aug 27, 2007"
12 .SH NAME
13 strptime, strptime_l \- date and time conversion
14 .SH SYNOPSIS
15 .LP
16 .nf
17 #include <time.h>
18
19 \fBchar *\fR\fBstrptime\fR(\fBconst char *restrict\fR \fIbuf\fR,
20 \fBconst char *restrict\fR \fIformat\fR, \fBstruct tm *restrict\fR \fItm\fR);
21
22 \fBchar *\fR\fBstrptime_l\fR(\fBconst char *restrict\fR \fIbuf\fR,
23 \fBconst char *restrict\fR \fIformat\fR, \fBstruct tm *restrict\fR \fItm\fR,
24 \fBlocale_t\fR \fIloc\fR);
25 .fi
26
27 .SS "Non-zeroing Behavior"
28 .LP
29 .nf
30 \fBcc\fR [\fIflag\fR...] \fIfile\fR... \fB-D_STRPTIME_DONTZERO\fR [\fIlibrary\fR...]
31 #include <time.h>
32
33 \fBchar *\fR\fBstrptime\fR(\fBconst char *restrict\fR \fIbuf\fR,
34 \fBconst char *restrict\fR \fIformat\fR, \fBstruct tm *restrict\fR \fItm\fR);
35 .fi
36
37 .SH DESCRIPTION
38 .sp
39 .LP
40 The \fBstrptime()\fR function converts the character string pointed to by
41 \fIbuf\fR to values which are stored in the \fBtm\fR structure pointed to by
42 \fItm\fR, using the format specified by \fIformat\fR. The \fBstrptime_l()\fR
43 function is identical to \fBstrptime()\fR except instead of acting in the
44 current locale, it acts in the locale specified by the argument \fIloc\fR.
45 .sp
46 .LP
47 The \fIformat\fR argument is composed of zero or more conversion
48 specifications. Each conversion specification is composed of a "%" (percent)
49 character followed by one or two conversion characters which specify the
50 replacement required. One or more white space characters (as specified by
51 \fBisspace\fR(3C)) may precede or follow a conversion specification. There must
52 be white-space or other non-alphanumeric characters between any two conversion
53 specifications.
54 .sp
55 .LP
56 A non-zeroing version of \fBstrptime()\fR, described below under \fBNon-zeroing
57 Behavior\fR, is provided if \fB_STRPTIME_DONTZERO\fR is defined.
58 .SS "Conversion Specifications"
59 .sp
60 .LP
61 The following conversion specifications are supported:
62 .sp
63 .ne 2
64 .na
65 \fB\fB%%\fR\fR
66 .ad
67 .RS 6n
68 Same as \fB%\fR.
69 .RE
70
71 .sp
72 .ne 2
73 .na
74 \fB\fB%a\fR\fR
75 .ad
76 .RS 6n
77 Day of week, using the locale's weekday names; either the abbreviated or full
78 name may be specified.
79 .RE
349
350 .sp
351 .ne 2
352 .na
353 \fB\fB%Y\fR\fR
354 .ad
355 .RS 6n
356 Year, including the century (for example, 1993).
357 .RE
358
359 .sp
360 .ne 2
361 .na
362 \fB\fB%Z\fR\fR
363 .ad
364 .RS 6n
365 Time zone name or no characters if no time zone exists.
366 .RE
367
368 .SS "Modified Conversion Specifications"
369 .sp
370 .LP
371 Some conversion specifications can be modified by the \fBE\fR and \fBO\fR
372 modifier characters to indicate that an alternate format or specification
373 should be used rather than the one normally used by the unmodified
374 specification. If the alternate format or specification does not exist in the
375 current locale, the behavior will be as if the unmodified conversion
376 specification were used.
377 .sp
378 .ne 2
379 .na
380 \fB\fB%Ec\fR\fR
381 .ad
382 .RS 7n
383 Locale's alternate appropriate date and time representation.
384 .RE
385
386 .sp
387 .ne 2
388 .na
389 \fB\fB%EC\fR\fR
514 .ne 2
515 .na
516 \fB\fB%OW\fR\fR
517 .ad
518 .RS 7n
519 Week number of the year (Monday as the first day of the week) using the
520 locale's alternate numeric symbols.
521 .RE
522
523 .sp
524 .ne 2
525 .na
526 \fB\fB%Oy\fR\fR
527 .ad
528 .RS 7n
529 Year (offset from \fB%C\fR) in the locale's alternate representation and using
530 the locale's alternate numeric symbols.
531 .RE
532
533 .SS "General Specifications"
534 .sp
535 .LP
536 A conversion specification that is an ordinary character is executed by
537 scanning the next character from the buffer. If the character scanned from the
538 buffer differs from the one comprising the specification, the specification
539 fails, and the differing and subsequent characters remain unscanned.
540 .sp
541 .LP
542 A series of specifications composed of \fB%n\fR, \fB%t\fR, white-space
543 characters or any combination is executed by scanning up to the first character
544 that is not white space (which remains unscanned), or until no more characters
545 can be scanned. White space is defined by \fBisspace\fR(3C).
546 .sp
547 .LP
548 Any other conversion specification is executed by scanning characters until a
549 character matching the next specification is scanned, or until no more
550 characters can be scanned. These characters, except the one matching the next
551 specification, are then compared to the locale values associated with the
552 conversion specifier. If a match is found, values for the appropriate
553 \fItm\fR structure members are set to values corresponding to the locale
554 information. If no match is found, \fBstrptime()\fR fails and no more
555 characters are scanned.
556 .sp
557 .LP
558 The month names, weekday names, era names, and alternate numeric symbols can
559 consist of any combination of upper and lower case letters. The user can
560 request that the input date or time specification be in a specific language by
561 setting the \fBLC_TIME\fR category using \fBsetlocale\fR(3C).
562 .SS "Non-zeroing Behavior"
563 .sp
564 .LP
565 In addition to the behavior described above by various standards, the Solaris
566 implementation of \fBstrptime()\fR provides the following extensions. These may
567 change at any time in the future. Portable applications should not depend on
568 these extended features:
569 .RS +4
570 .TP
571 .ie t \(bu
572 .el o
573 If \fB_STRPTIME_DONTZERO\fR is not defined, the \fBtm struct\fR is zeroed on
574 entry and \fBstrptime()\fR updates the fields of the \fBtm struct\fR associated
575 with the specifiers in the format string.
576 .RE
577 .RS +4
578 .TP
579 .ie t \(bu
580 .el o
581 If \fB_STRPTIME_DONTZERO\fR is defined, \fBstrptime()\fR does not zero the
582 \fBtm struct\fR on entry. Additionally, for some specifiers, \fBstrptime()\fR
583 will use some values in the input \fBtm struct\fR to recalculate the date and
584 re-assign the appropriate members of the \fBtm struct\fR.
585 .RE
586 .sp
587 .LP
588 The following describes extended features regardless of whether
589 \fB_STRPTIME_DONTZERO\fR is defined or not defined:
590 .RS +4
591 .TP
592 .ie t \(bu
593 .el o
594 If \fB%j\fR is specified, \fBtm_yday\fR is set; if year is given, and if month
595 and day are not given, \fBstrptime()\fR calculates and sets \fBtm_mon\fR,
596 \fBtm_mday\fR, and \fBtm_year\fR.
597 .RE
598 .RS +4
599 .TP
600 .ie t \(bu
601 .el o
602 If \fB%U\fR or \fB%W\fR is specified and if weekday and year are given and
603 month and day of month are not given, \fBstrptime()\fR calculates and sets
604 \fBtm_mon\fR, \fBtm_mday\fR, \fBtm_wday\fR, and \fBtm_year\fR.
605 .RE
606 .sp
607 .LP
608 The following describes extended features when \fB_STRPTIME_DONTZERO\fR is not
609 defined:
610 .RS +4
611 .TP
612 .ie t \(bu
613 .el o
614 If \fB%C\fR is specified and \fB%y\fR is not specified, \fBstrptime()\fRassumes
615 0 as the year offset, then calculates the year, and assigns \fBtm_year\fR.
616 .RE
617 .sp
618 .LP
619 The following describes extended features when \fB_STRPTIME_DONTZERO\fR is
620 defined:
621 .RS +4
622 .TP
623 .ie t \(bu
624 .el o
625 If \fB%C\fR is specified and \fB%y\fR is not specified, \fBstrptime()\fR
626 assumes the year offset of the year value of the \fBtm_year\fR member of the
627 input \fBtm struct\fR, then calculates the year and assigns \fBtm_year\fR.
628 .RE
629 .RS +4
630 .TP
631 .ie t \(bu
632 .el o
633 If \fB%j\fR is specified and neither \fB%y\fR, \fB%Y\fR, nor \fB%C\fR are
634 specified, and neither month nor day of month are specified, \fBstrptime()\fR
635 assumes the year value given by the value of the \fBtm_year\fR field of the
636 input \fBtm struct\fR. Then, in addition to setting \fBtm_yday\fR,
637 \fBstrptime()\fR uses day-of-year and year values to calculate the month and
643 .el o
644 If \fB%U\fR or \fB%W\fR is specified, and if weekday and/or year are not given,
645 and month and day of month are not given, \fBstrptime()\fR will assume the
646 weekday value and/or the year value as the value of the \fBtm_wday\fR field
647 and/or \fBtm_year\fR field of the input \fBtm struct\fR. Then,
648 \fBstrptime()\fR will calculate the month and day-of-month and assign
649 \fBtm_month\fR, \fBtm_mday\fR, and/or \fBtm_year\fR.
650 .RE
651 .RS +4
652 .TP
653 .ie t \(bu
654 .el o
655 If \fB%p\fR is specified and if hour is not specified, \fBstrptime()\fR will
656 reference, and if needed, update the \fBtm_hour\fR member. If the \fBam_pm\fR
657 input is p.m. and the input \fBtm_hour\fR value is between 0 - 11,
658 \fBstrptime()\fR will add 12 hours and update \fBtm_hour\fR. If the
659 \fBam_pm\fR input is a.m. and input \fBtm_hour\fR value is between 12 - 23,
660 \fBstrptime()\fR will subtract 12 hours and update \fBtm_hour\fR.
661 .RE
662 .SH RETURN VALUES
663 .sp
664 .LP
665 Upon successful completion, \fBstrptime()\fR returns a pointer to the character
666 following the last character parsed. Otherwise, a null pointer is returned.
667 .SH USAGE
668 .sp
669 .LP
670 Several "same as" formats, and the special processing of white-space characters
671 are provided in order to ease the use of identical \fIformat\fR strings for
672 \fBstrftime\fR(3C) and \fBstrptime()\fR.
673 .sp
674 .LP
675 The \fBstrptime()\fR function tries to calculate \fBtm_year\fR, \fBtm_mon\fR,
676 and \fBtm_mday\fR when given incomplete input. This allows the \fBstruct tm\fR
677 created by \fBstrptime()\fR to be passed to \fBmktime\fR(3C) to produce a
678 \fBtime_t\fR value for dates and times that are representable by a
679 \fBtime_t\fR. As an example, since \fBmktime()\fR ignores \fBtm_yday\fR,
680 \fBstrptime()\fR calculates \fBtm_mon\fR and \fBtm_mday\fR as well as filling
681 in \fBtm_yday\fR when \fB%j\fR is specified without otherwise specifying a
682 month and day within month.
683 .SH ATTRIBUTES
684 .sp
685 .LP
686 See \fBattributes\fR(5) for descriptions of the following attributes:
687 .sp
688
689 .sp
690 .TS
691 box;
692 c | c
693 l | l .
694 ATTRIBUTE TYPE ATTRIBUTE VALUE
695 _
696 CSI Enabled
697 _
698 Interface Stability Committed
699 _
700 MT-Level MT-Safe
701 _
702 Standard See \fBstandards\fR(5).
703 .TE
704
705 .SH SEE ALSO
706 .sp
707 .LP
708 \fBctime\fR(3C), \fBgetdate\fR(3C), \fBisspace\fR(3C), \fBmktime\fR(3C),
709 \fBsetlocale\fR(3C), \fBstrftime\fR(3C), \fBattributes\fR(5), \fBenviron\fR(5),
710 \fBstandards\fR(5)
|
1 '\" te
2 .\" Copyright (c) 1992, X/Open Company Limited. All Rights Reserved.
3 .\" Portions Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved.
4 .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
5 .\" http://www.opengroup.org/bookstore/.
6 .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
7 .\" This notice shall appear on any product containing this material.
8 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
9 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
10 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
11 .TH STRPTIME 3C "Jun 27, 2014"
12 .SH NAME
13 strptime, strptime_l \- date and time conversion
14 .SH SYNOPSIS
15 .LP
16 .nf
17 #include <time.h>
18
19 \fBchar *\fR\fBstrptime\fR(\fBconst char *restrict\fR \fIbuf\fR,
20 \fBconst char *restrict\fR \fIformat\fR, \fBstruct tm *restrict\fR \fItm\fR);
21 .fi
22 .LP
23 .nf
24 #include <time.h>
25 #include <xlocale.h>
26
27 \fBchar *\fR\fBstrptime_l\fR(\fBconst char *restrict\fR \fIbuf\fR,
28 \fBconst char *restrict\fR \fIformat\fR, \fBstruct tm *restrict\fR \fItm\fR,
29 \fBlocale_t\fR \fIloc\fR);
30 .fi
31 .SS "Non-zeroing Behavior"
32 .LP
33 .nf
34 \fBcc\fR [\fIflag\fR...] \fIfile\fR... \fB-D_STRPTIME_DONTZERO\fR [\fIlibrary\fR...]
35 #include <time.h>
36
37 \fBchar *\fR\fBstrptime\fR(\fBconst char *restrict\fR \fIbuf\fR,
38 \fBconst char *restrict\fR \fIformat\fR, \fBstruct tm *restrict\fR \fItm\fR);
39 .fi
40
41 .SH DESCRIPTION
42 .LP
43 The \fBstrptime()\fR function converts the character string pointed to by
44 \fIbuf\fR to values which are stored in the \fBtm\fR structure pointed to by
45 \fItm\fR, using the format specified by \fIformat\fR. The \fBstrptime_l()\fR
46 function is identical to \fBstrptime()\fR except instead of acting in the
47 current locale, it acts in the locale specified by the argument \fIloc\fR.
48 .LP
49 The \fIformat\fR argument is composed of zero or more conversion
50 specifications. Each conversion specification is composed of a "%" (percent)
51 character followed by one or two conversion characters which specify the
52 replacement required. One or more white space characters (as specified by
53 \fBisspace\fR(3C)) may precede or follow a conversion specification. There must
54 be white-space or other non-alphanumeric characters between any two conversion
55 specifications.
56 .LP
57 A non-zeroing version of \fBstrptime()\fR, described below under \fBNon-zeroing
58 Behavior\fR, is provided if \fB_STRPTIME_DONTZERO\fR is defined.
59 .SS "Conversion Specifications"
60 .LP
61 The following conversion specifications are supported:
62 .sp
63 .ne 2
64 .na
65 \fB\fB%%\fR\fR
66 .ad
67 .RS 6n
68 Same as \fB%\fR.
69 .RE
70
71 .sp
72 .ne 2
73 .na
74 \fB\fB%a\fR\fR
75 .ad
76 .RS 6n
77 Day of week, using the locale's weekday names; either the abbreviated or full
78 name may be specified.
79 .RE
349
350 .sp
351 .ne 2
352 .na
353 \fB\fB%Y\fR\fR
354 .ad
355 .RS 6n
356 Year, including the century (for example, 1993).
357 .RE
358
359 .sp
360 .ne 2
361 .na
362 \fB\fB%Z\fR\fR
363 .ad
364 .RS 6n
365 Time zone name or no characters if no time zone exists.
366 .RE
367
368 .SS "Modified Conversion Specifications"
369 .LP
370 Some conversion specifications can be modified by the \fBE\fR and \fBO\fR
371 modifier characters to indicate that an alternate format or specification
372 should be used rather than the one normally used by the unmodified
373 specification. If the alternate format or specification does not exist in the
374 current locale, the behavior will be as if the unmodified conversion
375 specification were used.
376 .sp
377 .ne 2
378 .na
379 \fB\fB%Ec\fR\fR
380 .ad
381 .RS 7n
382 Locale's alternate appropriate date and time representation.
383 .RE
384
385 .sp
386 .ne 2
387 .na
388 \fB\fB%EC\fR\fR
513 .ne 2
514 .na
515 \fB\fB%OW\fR\fR
516 .ad
517 .RS 7n
518 Week number of the year (Monday as the first day of the week) using the
519 locale's alternate numeric symbols.
520 .RE
521
522 .sp
523 .ne 2
524 .na
525 \fB\fB%Oy\fR\fR
526 .ad
527 .RS 7n
528 Year (offset from \fB%C\fR) in the locale's alternate representation and using
529 the locale's alternate numeric symbols.
530 .RE
531
532 .SS "General Specifications"
533 .LP
534 A conversion specification that is an ordinary character is executed by
535 scanning the next character from the buffer. If the character scanned from the
536 buffer differs from the one comprising the specification, the specification
537 fails, and the differing and subsequent characters remain unscanned.
538 .sp
539 .LP
540 A series of specifications composed of \fB%n\fR, \fB%t\fR, white-space
541 characters or any combination is executed by scanning up to the first character
542 that is not white space (which remains unscanned), or until no more characters
543 can be scanned. White space is defined by \fBisspace\fR(3C).
544 .LP
545 Any other conversion specification is executed by scanning characters until a
546 character matching the next specification is scanned, or until no more
547 characters can be scanned. These characters, except the one matching the next
548 specification, are then compared to the locale values associated with the
549 conversion specifier. If a match is found, values for the appropriate
550 \fItm\fR structure members are set to values corresponding to the locale
551 information. If no match is found, \fBstrptime()\fR fails and no more
552 characters are scanned.
553 .sp
554 .LP
555 The month names, weekday names, era names, and alternate numeric symbols can
556 consist of any combination of upper and lower case letters. The user can
557 request that the input date or time specification be in a specific language by
558 setting the \fBLC_TIME\fR category using \fBsetlocale\fR(3C).
559 .SS "Non-zeroing Behavior"
560 .LP
561 In addition to the behavior described above by various standards, the Solaris
562 implementation of \fBstrptime()\fR provides the following extensions. These may
563 change at any time in the future. Portable applications should not depend on
564 these extended features:
565 .RS +4
566 .TP
567 .ie t \(bu
568 .el o
569 If \fB_STRPTIME_DONTZERO\fR is not defined, the \fBtm struct\fR is zeroed on
570 entry and \fBstrptime()\fR updates the fields of the \fBtm struct\fR associated
571 with the specifiers in the format string.
572 .RE
573 .RS +4
574 .TP
575 .ie t \(bu
576 .el o
577 If \fB_STRPTIME_DONTZERO\fR is defined, \fBstrptime()\fR does not zero the
578 \fBtm struct\fR on entry. Additionally, for some specifiers, \fBstrptime()\fR
579 will use some values in the input \fBtm struct\fR to recalculate the date and
580 re-assign the appropriate members of the \fBtm struct\fR.
581 .RE
582 .LP
583 The following describes extended features regardless of whether
584 \fB_STRPTIME_DONTZERO\fR is defined or not defined:
585 .RS +4
586 .TP
587 .ie t \(bu
588 .el o
589 If \fB%j\fR is specified, \fBtm_yday\fR is set; if year is given, and if month
590 and day are not given, \fBstrptime()\fR calculates and sets \fBtm_mon\fR,
591 \fBtm_mday\fR, and \fBtm_year\fR.
592 .RE
593 .RS +4
594 .TP
595 .ie t \(bu
596 .el o
597 If \fB%U\fR or \fB%W\fR is specified and if weekday and year are given and
598 month and day of month are not given, \fBstrptime()\fR calculates and sets
599 \fBtm_mon\fR, \fBtm_mday\fR, \fBtm_wday\fR, and \fBtm_year\fR.
600 .RE
601 .LP
602 The following describes extended features when \fB_STRPTIME_DONTZERO\fR is not
603 defined:
604 .RS +4
605 .TP
606 .ie t \(bu
607 .el o
608 If \fB%C\fR is specified and \fB%y\fR is not specified, \fBstrptime()\fRassumes
609 0 as the year offset, then calculates the year, and assigns \fBtm_year\fR.
610 .RE
611 .LP
612 The following describes extended features when \fB_STRPTIME_DONTZERO\fR is
613 defined:
614 .RS +4
615 .TP
616 .ie t \(bu
617 .el o
618 If \fB%C\fR is specified and \fB%y\fR is not specified, \fBstrptime()\fR
619 assumes the year offset of the year value of the \fBtm_year\fR member of the
620 input \fBtm struct\fR, then calculates the year and assigns \fBtm_year\fR.
621 .RE
622 .RS +4
623 .TP
624 .ie t \(bu
625 .el o
626 If \fB%j\fR is specified and neither \fB%y\fR, \fB%Y\fR, nor \fB%C\fR are
627 specified, and neither month nor day of month are specified, \fBstrptime()\fR
628 assumes the year value given by the value of the \fBtm_year\fR field of the
629 input \fBtm struct\fR. Then, in addition to setting \fBtm_yday\fR,
630 \fBstrptime()\fR uses day-of-year and year values to calculate the month and
636 .el o
637 If \fB%U\fR or \fB%W\fR is specified, and if weekday and/or year are not given,
638 and month and day of month are not given, \fBstrptime()\fR will assume the
639 weekday value and/or the year value as the value of the \fBtm_wday\fR field
640 and/or \fBtm_year\fR field of the input \fBtm struct\fR. Then,
641 \fBstrptime()\fR will calculate the month and day-of-month and assign
642 \fBtm_month\fR, \fBtm_mday\fR, and/or \fBtm_year\fR.
643 .RE
644 .RS +4
645 .TP
646 .ie t \(bu
647 .el o
648 If \fB%p\fR is specified and if hour is not specified, \fBstrptime()\fR will
649 reference, and if needed, update the \fBtm_hour\fR member. If the \fBam_pm\fR
650 input is p.m. and the input \fBtm_hour\fR value is between 0 - 11,
651 \fBstrptime()\fR will add 12 hours and update \fBtm_hour\fR. If the
652 \fBam_pm\fR input is a.m. and input \fBtm_hour\fR value is between 12 - 23,
653 \fBstrptime()\fR will subtract 12 hours and update \fBtm_hour\fR.
654 .RE
655 .SH RETURN VALUES
656 .LP
657 Upon successful completion, \fBstrptime()\fR returns a pointer to the character
658 following the last character parsed. Otherwise, a null pointer is returned.
659 .SH USAGE
660 .LP
661 Several "same as" formats, and the special processing of white-space characters
662 are provided in order to ease the use of identical \fIformat\fR strings for
663 \fBstrftime\fR(3C) and \fBstrptime()\fR.
664 .LP
665 The \fBstrptime()\fR function tries to calculate \fBtm_year\fR, \fBtm_mon\fR,
666 and \fBtm_mday\fR when given incomplete input. This allows the \fBstruct tm\fR
667 created by \fBstrptime()\fR to be passed to \fBmktime\fR(3C) to produce a
668 \fBtime_t\fR value for dates and times that are representable by a
669 \fBtime_t\fR. As an example, since \fBmktime()\fR ignores \fBtm_yday\fR,
670 \fBstrptime()\fR calculates \fBtm_mon\fR and \fBtm_mday\fR as well as filling
671 in \fBtm_yday\fR when \fB%j\fR is specified without otherwise specifying a
672 month and day within month.
673 .SH ATTRIBUTES
674 .LP
675 See \fBattributes\fR(5) for descriptions of the following attributes:
676 .TS
677 box;
678 c | c
679 l | l .
680 ATTRIBUTE TYPE ATTRIBUTE VALUE
681 _
682 CSI Enabled
683 _
684 Interface Stability See below.
685 _
686 MT-Level MT-Safe
687 _
688 Standard See \fBstandards\fR(5) for \fBstrptime()\fR.
689 .TE
690
691 .LP
692 The \fBstrptime()\fR function is Standard. The \fBstrptime_l()\fR function
693 is Uncommitted.
694 .SH SEE ALSO
695 .LP
696 \fBctime\fR(3C), \fBgetdate\fR(3C), \fBisspace\fR(3C), \fBmktime\fR(3C),
697 \fBnewlocale\fR(3C),
698 \fBsetlocale\fR(3C), \fBstrftime\fR(3C), \fBuselocale\fR(3C),
699 \fBattributes\fR(5), \fBenviron\fR(5),
700 \fBstandards\fR(5)
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