CVS commit: src/lib/libutil

["Robert Elz" <kre%netbsd.org@localhost>]

Module Name:    src
Committed By:   kre
Date:           Mon Oct 19 15:05:53 UTC 2020

Modified Files:
        src/lib/libutil: parsedate.y

Log Message:
POSIX requires that when converting 2 digit year representations to
actual specific years, values from 69-99 be treated as 20th century,
and values from 0-68 be treated as 21st century.  This allows for those
unfortunate enough to reside in a timezone west of Greenwich to convert
the epoch (or a time very close to it) to text, write that with just two
digits, and correctly convert it back to a time near the epoch, rather
than to something in 2069.

We used to split things so 0-69 were 21st century, and 70-99 were 20th.
Change that (this requires a change in the parsedate ATF tests which
test this specific boundary).

While here, add support for another POSIX requirement, that the radix
char before fractional seconds can be either a ',' or a '.'.  We used
to allow only '.', add support for ','.   This is something of a meaningless
change, as parsedate() returns a time_t in which there is no way to
represent fractional seconds, so there's little point in ever specifying
them regardless of what char is used for the "decimal point" - they will
be ignored anyway.    But at least fractional seconds using a ',' as the
radix char will no longer cause the conversion to fail (or do something else
bizarre).


To generate a diff of this commit:
cvs rdiff -u -r1.32 -r1.33 src/lib/libutil/parsedate.y

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.