Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
STRPTIME(3)	       FreeBSD Library Functions Manual		   STRPTIME(3)

NAME
     strptime -- parse date and	time string

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <time.h>

     char *
     strptime(const char * restrict buf, const char * restrict format,
	 struct	tm * restrict timeptr);

     #include <time.h>
     #include <xlocale.h>

     char *
     strptime_l(const char * restrict buf, const char *	restrict format,
	 struct	tm * restrict timeptr, locale_t	loc);

DESCRIPTION
     The strptime() function parses the	string in the buffer buf according to
     the string	pointed	to by format, and fills	in the elements	of the struc-
     ture pointed to by	timeptr.  The resulting	values will be relative	to the
     local time	zone.  Thus, it	can be considered the reverse operation	of
     strftime(3).  The strptime_l() function does the same as strptime(), but
     takes an explicit locale rather than using	the current locale.

     The format	string consists	of zero	or more	conversion specifications and
     ordinary characters.  All ordinary	characters are matched exactly with
     the buffer, where white space in the format string	will match any amount
     of	white space in the buffer.  All	conversion specifications are identi-
     cal to those described in strftime(3).

     Two-digit year values, including formats %y and %D, are now interpreted
     as	beginning at 1969 per POSIX requirements.  Years 69-00 are interpreted
     in	the 20th century (1969-2000), years 01-68 in the 21st century
     (2001-2068).

     If	the format string does not contain enough conversion specifications to
     completely	specify	the resulting struct tm, the unspecified members of
     timeptr are left untouched.  For example, if format is ``%H:%M:%S'', only
     tm_hour, tm_sec and tm_min	will be	modified.  If time relative to today
     is	desired, initialize the	timeptr	structure with today's date before
     passing it	to strptime().

RETURN VALUES
     Upon successful completion, strptime() returns the	pointer	to the first
     character in buf that has not been	required to satisfy the	specified con-
     versions in format.  It returns NULL if one of the	conversions failed.
     strptime_l() returns the same values as strptime().

SEE ALSO
     date(1), scanf(3),	strftime(3)

HISTORY
     The strptime() function appeared in FreeBSD 3.0.

AUTHORS
     The strptime() function has been contributed by Powerdog Industries.

     This man page was written by Jorg Wunsch.

BUGS
     Both the %e and %l	format specifiers may incorrectly scan one too many
     digits if the intended values comprise only a single digit	and that digit
     is	followed immediately by	another	digit.	Both specifiers	accept zero-
     padded values, even though	they are both defined as taking	unpadded val-
     ues.

     The %p format specifier has no effect unless it is	parsed after hour-
     related specifiers.  Specifying %l	without	%p will	produce	undefined
     results.  Note that 12AM (ante meridiem) is taken as midnight and 12PM
     (post meridiem) is	taken as noon.

     The %U and	%W format specifiers accept any	value within the range 00 to
     53	without	validating against other values	supplied (like month or	day of
     the year, for example).

     The %Z format specifier only accepts time zone abbreviations of the local
     time zone,	or the value "GMT".  This limitation is	because	of ambiguity
     due to of the over	loading	of time	zone abbreviations.  One such example
     is	EST which is both Eastern Standard Time	and Eastern Australia Summer
     Time.

     The strptime() function does not correctly	handle multibyte characters in
     the format	argument.

FreeBSD	9.2			 June 25, 2012			   FreeBSD 9.2

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | HISTORY | AUTHORS | BUGS

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=strptime_l&sektion=3&manpath=FreeBSD+9.1-RELEASE>

home | help