NAME

Date::Fmtstr2time - Functions to format date/time strings into a Perl Time based on a "Picture" format string.

AUTHOR

Jim Turner

(c) 2015-2019, Jim Turner under the same license that Perl 5 itself is. All rights reserved.

SYNOPSIS

        use Date::Fmtstr2time;

        my $timevalue = str2time('12-25-2015 07:15 AM', 'mm-dd-yyyy hh:mi PM');

        die $timevalue  if ($timevalue =~ /\D/);

        print "Perl time (seconds since epoc):  $timevalue.\n";

DESCRIPTION

Date::Fmtstr2time provides a single function str2time that accepts a date or date / time as a string (data-string), and a format-string consisting of special substrings which represent the format of various parts of a date and time value. It returns a standard Perl (Unix) "time" value (a large integer equivalent to the number of seconds since 1980) or an error string.

METHODS

$integer = str2time(data-string, format-string);

Returns a standard Perl (Unix) "time" value (a large integer) on success, or an error message string on failure. One can easily check for failure by checking the result for any non-integer characters (=~ /\D/). The format-string tells the software what format to expect the date / time value in the data-string to be in.

For example:

        $s = &str2time('01-09-2016 01:20 AM (Sat) (January)', 'mm-dd-yyyy hh:mi PM (Day) (Month)');

would set $s to 1452324000, (the Unix time equivalent).

Special Formatting Substrings

There are numerous choices of special format substrings which can be used in an infinite number of combinations to produce the desired results. They are listed below:

    a, A, am, or AM - Assume hour is AM (if 1-11), and convert 12 to midnight (0 in 24-hour time). (all specifiers are identical and case insensitive). See also: p, P, pm, or PM below.

    day, Day, or DAY - Three letter abbreviation of the day of the week (case insensitive), ie. "sun". Reason for the three versions is to match up with Date::Time2fmtstr, which has three separate versions for outputting the desired case, but here (inputting), case doesn't matter. This applies also to Month, etc. and similiarly to functions that pad or don't pad with leading zeros!

    dayofweek, Dayofweek, or DAYOFWEEK - Day of the week (case insensitive).

    ddd - Number of days since beginning of year. NOTE: This is calculated by adding the number of SECONDS (86400 per day) to midnight, 1/1/current-year, so if spanning a daylight-savings time boundary may result in +1 hour difference, which the underlying Perl localtime/timelocal functions will take into account! For example, if the current time was "1570286966" (2019/10/05 09:49:26), the following code:

    print &time2str(&str2time(&time2str(1570286966, 'ddd, hh:mi:ss'), 'ddd, hh:mi:ss'), 'yyyy/mm/dd hh:mi:ss') . "\n";

    would print "2019/10/05 10:49:26" due to the fact that 1 hour (3600 seconds) was automatically skipped over when DST was imposed between 1 January and 5 October. This "feature" only applies when calculating the date/time based on days since beginning of the year ("ddd").

    dd, d1 - Day of month (1 or 2 digits, left padded with a zero if needed), ie. "3" or "03" for March.

    d0, d - Numeric day of the week zero-based (Sunday=0, Monday=1, ... Saturday=6).

    hh, h1 - Hour in common format, ie. 1-12 (1 or 2 digits, as needed). (see AM and PM specifiers).

    hhmi, h1mi - Hours and minutes in 12-hour time (hours and minutes no colon).

    hhmiss - Hours, minutes and seconds in 12-hour time (no colons). Must be six digits.

    hh24, HHmi - Hours and minutes in 24-hour (military) time (no colon).

    HH, H1 - Hour in 24-hour format, ie. 00-23 (1 or 2 digits, as needed).

    HHmiss - Hours, minutes and seconds in 24-hour (military) time (no colons). Must be six digits.

    mi - Minute, ie. 0-59 (1 or 2 digits, as needed).

    mm, m1 - Number of month (1 or 2 digits, as needed), ie. "1" or "01" for January.

    mmdd - Numeric date in 4 digits, ie. "0107" for January, 7, (current year).

    mmddyy - Numeric date in 6 digits, ie. "010715" for January 7, 2015.

    mmddyyyy - Numeric date in 8 digits, ie. "01072015" for January 7, 2015.

    mmmm, mmm0 - Minutes since start of day (0-3599).

    mmyy - Numeric date in 4 digits, ie. "0115" for January, 2015.

    mmyyyy - Numeric date in 6 digits, ie. "012015" for January, 2015.

    mon, Mon, or MON - Three letter abbreviation of the month (case insensitive), ie. "jan" for January.

    month, Month, or MONTH - The Full name of the month (case insensitive), ie. "january".

    p, P, pm, or PM - Assume hour is noon if 12, otherwise, convert (add 12 to) 1-11 to convert to PM (13-23 in 24 hour time). (all specifiers are identical).

    q - Number of the quarter of the year - (1-4).

    rm - Roman numeral for the month (i-xii) in lower case.

    RM - Roman numeral for the month (I-XII) in upper case.

    ss - Seconds since start of last minute (1 or 2 digits as needed), ie. 0-59.

    sssss, ssss0 - Seconds since start of day (0-86399) 1-5 digits as needed (leading zeros ignored).

    w - Number of week (one-based) of the month (1-5).

    ww - Number of week (one-based) of the year (1-52) (1 or 2 digits as needed).

    yy, rr - Year in last 2 digits.

    yymm - Numeric date in 4 digits, ie. "1501" for January, 2015.

    yymmdd - Numeric date in 6 digits, ie. "150107" for January 7, 2015.

    yyyy, rrrr - Year in 4 digits.

    yyyymm - Numeric date in 6 digits, ie. "201501" for January, 2015.

    yyyymmdd - Numeric date in 8 digits, ie. "20150107" for January 7, 2015.

    yyyymmddhhmi - Numeric date/time in 12 digits, ie. "201501071345" for January 7, 2015 1:45pm.

    yyyymmddhhmiss - Numeric date/time in 14 digits, ie. "20150107134512" for January 7, 2015 1:45:12pm.

DEPENDENCIES

Perl 5

Time::Local

RECCOMENDS

Date::Time2fmtstr

BUGS

Please report any bugs or feature requests to bug-Date-Fmtstr2time at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Date-Fmtstr2time. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc Date::Fmtstr2time

You can also look for information at:

SEE ALSO

Date::Time2fmtstr

KEYWORDS

Date::Fmtstr2time, Date::Time2fmtstr, formatting, picture_clause, strings

LICENSE AND COPYRIGHT

Copyright (C) 2015-2019 Jim Turner

This program is free software; you can redistribute it and/or modify it under the terms of the the Artistic License (2.0). You may obtain a copy of the full license at:

http://www.perlfoundation.org/artistic_license_2_0

Any use, modification, and distribution of the Standard or Modified Versions is governed by this Artistic License. By using, modifying or distributing the Package, you accept this license. Do not use, modify, or distribute the Package, if you do not accept this license.

If your Modified Version has been derived from a Modified Version made by someone other than you, you are nevertheless required to ensure that your Modified Version complies with the requirements of this license.

This license does not grant you the right to use any trademark, service mark, tradename, or logo of the Copyright Holder.

This license includes the non-exclusive, worldwide, free-of-charge patent license to make, have made, use, offer to sell, sell, import and otherwise transfer the Package with respect to any patent claims licensable by the Copyright Holder that are necessarily infringed by the Package. If you institute patent litigation (including a cross-claim or counterclaim) against any party alleging that the Package constitutes direct or contributory patent infringement, then this Artistic License to you shall terminate on the date that such litigation is filed.

Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY YOUR LOCAL LAW. UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR CONTRIBUTOR WILL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT OF THE USE OF THE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.