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Bring two-digit years up-to-date with POSIX requirements.

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70-00 are intepreted in the 20th century; 01-69 in the
21st century.  (Yes, 2000 is the last year of the 20th
century, not the first year of the 21st.)

Submitted by:	Sergey Babkin <babkin@bellatlantic.net>
This commit is contained in:
Wes Peters 1999-04-25 01:42:18 +00:00
parent 19477ba0b7
commit a00b1d8f7a
2 changed files with 12 additions and 2 deletions
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10
lib/libc/stdtime/strptime.3
View File

@ -23,7 +23,7 @@
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $Id: strptime.3,v 1.1 1997/08/09 15:43:54 joerg Exp $
.\" $Id: strptime.3,v 1.2 1998/09/12 21:13:29 dt Exp $
.\" "
.Dd May 8, 1997
.Dt STRPTIME 3
@ -56,6 +56,14 @@ white space in the format string will match any amount of white space
in the buffer.
All conversion specifications are identical to those described in
.Xr strftime 3 .
.Pp
Two-digit year values, including formats
.Fa %d
and
.Fa %D ,
are now interpreted as beginning at 1970 per POSIX requirements.
Years 70-99 are interpreted in the 20th century, years 00-69 in
the 21st century.
.Sh RETURN VALUES
Upon successful completion,
.Fn strptime

4
lib/libc/stdtime/strptime.c
View File

@ -53,7 +53,7 @@
#ifdef LIBC_RCS
static const char rcsid[] =
"$Id: strptime.c,v 1.3 1997/08/13 13:11:53 ache Exp $";
"$Id: strptime.c,v 1.4 1998/09/12 21:13:29 dt Exp $";
#endif
#ifndef lint
@ -333,6 +333,8 @@ strptime(const char *buf, const char *fmt, struct tm *tm)
}
if (c == 'Y')
i -= 1900;
if (c == 'y' && i < 70)
i += 100;
if (i < 0)
return 0;