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DateTime::Format::Flexible.3pm

NAME

DateTime::Format::Flexible - DateTime::Format::Flexible - Flexibly parse strings and turn them into DateTime objects.

SYNOPSIS

   use DateTime::Format::Flexible;
   my $dt = DateTime::Format::Flexible->parse_datetime( 'January 8, 1999' );
   # $dt = a DateTime object set at 1999-01-08T00:00:00
 
 

DESCRIPTION

If you have ever had to use a program that made you type in the date a certain way and thought ``Why can't the computer just figure out what date I wanted?'', this module is for you.

DateTime::Format::Flexible attempts to take any string you give it and parse it into a DateTime object.

The test file tests 2500+ variations of date/time strings. If you can think of any that I do not cover, please let me know.

USAGE

This module uses DateTime::Format::Builder under the covers.

build, parse_datetime

build and parse_datetime do the same thing. Give it a string and it attempts to parse it and return a DateTime object.

If it can't it will throw an exception.

  my $dt = DateTime::Format::Flexible->build( $date );
 
  my $dt = DateTime::Format::Flexible->parse_datetime( $date );
 
  my $dt = DateTime::Format::Flexible->parse_datetime(
      $date,
      strip    => [qr{\.\z}],
      tz_map   => {EDT => 'America/New_York'},
      european => 1
  );
 
 

•

"strip"

Remove a substring from the string you are trying to parse. You can pass multiple regexes in an arrayref.

example:

  my $dt = DateTime::Format::Flexible->parse_datetime(
      '2011-04-26 00:00:00 (registry time)' ,
      strip => [qr{\(registry time\)\z}] ,
  );
  # $dt is now 2011-04-26T00:00:00
 
 

This is helpful if you have a load of dates you want to normalize and you know of some weird formatting beforehand.

•

"tz_map"

map a given timezone to another recognized timezone Values are given as a hashref.

example:

  my $dt = DateTime::Format::Flexible->parse_datetime(
      '25-Jun-2009 EDT' ,
      tz_map => {EDT => 'America/New_York'}
  );
  # $dt is now 2009-06-25T00:00:00 with a timezone of America/New_York
 
 

This is helpful if you have a load of dates that have timezones that are not recognized by DateTime::Timezone.

•

"european"

If european is set to a true value, an attempt will be made to parse as a DD-MM-YYYY date instead of the default MM-DD-YYYY. There is a chance that this will not do the right thing due to ambiguity.

example:

  my $dt = DateTime::Format::Flexible->parse_datetime(
      '16/06/2010' , european => 1 ,
  );
  # $dt is now 2010-06-16T00:00:00
 
 

Example formats

A small list of supported formats:

YYYYMMDDTHHMMSS

YYYYMMDDTHHMM

YYYYMMDDTHH

YYYYMMDD

YYYYMM

MM-DD-YYYY

MM-D-YYYY

MM-DD-YY

M-DD-YY

YYYY/DD/MM

YYYY/M/DD

YYYY/MM/D

M-D

MM-D

M-D-Y

Month D, YYYY

Mon D, YYYY

Mon D, YYYY HH:MM:SS

...

there are 9000+ variations that are detected correctly in the test files (see t/data/* for most of them).

NOTES

The DateTime website http://datetime.perl.org/?Modules as of march 2008 lists this module under 'Confusing' and recommends the use of DateTime::Format::Natural.

Unfortunately I do not agree. DateTime::Format::Natural currently fails more than 2000 of my parsing tests. DateTime::Format::Flexible supports different types of date/time strings than DateTime::Format::Natural. I think there is utility in that can be found in both of them.

The whole goal of DateTime::Format::Flexible is to accept just about any crazy date/time string that a user might care to enter. DateTime::Format::Natural seems to be a little stricter in what it can parse.

BUGS

You cannot use a 1 or 2 digit year as the first field:

  YY-MM-DD # not supported
  Y-MM-DD  # not supported
 
 

It would get confused with MM-DD-YY

AUTHOR

     Tom Heady
     CPAN ID: thinc
     Punch, Inc.
     cpan@punch.net
     http://www.punch.net/
 
 

COPYRIGHT and LICENSE

Copyright 2007-2009 Tom Heady

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

The full text of the license can be found in the LICENSE file included with this module.

SEE ALSO

DateTime::Format::Builder, DateTime::Timezone, DateTime::Format::Natural