94 lines
2.9 KiB
Groff
94 lines
2.9 KiB
Groff
.\"
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.\" Copyright (c) 1997 Joerg Wunsch
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.\"
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.\" All rights reserved.
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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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $Id: strptime.3,v 1.3 1999/04/25 01:42:18 wes Exp $
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.\" "
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.Dd May 8, 1997
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.Dt STRPTIME 3
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.Os
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.Sh NAME
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.Nm strptime
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.Nd parse date and time string
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.Sh SYNOPSIS
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.Fd #include <time.h>
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.Ft char *
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.Fn strptime "const char *buf" "const char *format" "struct tm *timeptr"
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.Sh DESCRIPTION
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The
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.Fn strptime
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function parses the string in the buffer
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.Fa buf
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according to the string pointed to by
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.Fa format ,
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and fills in the elements of the structure pointed to by
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.Fa timeptr .
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Thus, it can be considered the reverse operation of
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.Xr strftime 3 .
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.Pp
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The
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.Fa format
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string consists of zero or more conversion specifications and
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ordinary characters.
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All ordinary characters are matched exactly with the buffer, where
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white space in the format string will match any amount of white space
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in the buffer.
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All conversion specifications are identical to those described in
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.Xr strftime 3 .
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.Pp
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Two-digit year values, including formats
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.Fa %y
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and
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.Fa %D ,
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are now interpreted as beginning at 1969 per POSIX requirements.
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Years 69-00 are interpreted in the 20th century (1969-2000), years
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01-68 in the 21st century (2001-2068).
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.Sh RETURN VALUES
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Upon successful completion,
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.Fn strptime
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returns the pointer to the first character in
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.Fa buf
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that has not been required to satisfy the specified conversions in
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.Fa format .
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It returns
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.Dv NULL
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if one of the conversions failed.
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.Sh SEE ALSO
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.Xr date 1 ,
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.Xr scanf 3 ,
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.Xr strftime 3
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.Sh AUTHORS
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The
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.Fn strptime
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function has been contributed by Powerdog Industries.
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.Pp
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This man page was written by
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.ie t J\(:org Wunsch.
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.el Joerg Wunsch.
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.Sh HISTORY
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The
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.Fn strptime
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function appeared in
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.Fx 3.0 .
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