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.\" ========================================================================
.\"
.IX Title "DateTime::Format::Builder::Parser::Regex 3pm"
.TH DateTime::Format::Builder::Parser::Regex 3pm "2013-04-03" "perl v5.14.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
DateTime::Format::Builder::Parser::Regex \- Regex based date parsing
.SH "VERSION"
.IX Header "VERSION"
version 0.81
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 4
\&   my $parser = DateTime::Format::Builder\->create_parser(
\&        regex  => qr/^(\ed\ed\ed\ed)(\ed\ed)(\ed\ed)T(\ed\ed)(\ed\ed)(\ed\ed)$/,
\&        params => [ qw( year month day hour minute second ) ],
\&   );
.Ve
.SH "SPECIFICATION"
.IX Header "SPECIFICATION"
In addition to the
common keys,
\&\f(CW\*(C`Regex\*(C'\fR supports:
.IP "\(bu" 4
\&\fBregex\fR is a regular expression that should capture
elements of the datetime string.
This is a required element. This is the key whose presence
indicates it's a specification that belongs to this class.
.IP "\(bu" 4
\&\fBparams\fR is an arrayref of key names. The captures from the
regex are mapped to these (\f(CW$1\fR to the first element, \f(CW$2\fR
to the second, and so on) and handed to
\&\f(CW\*(C`DateTime\->new()\*(C'\fR.
This is a required element.
.IP "\(bu" 4
\&\fBextra\fR is a hashref of extra arguments you wish to give to
\&\f(CW\*(C`DateTime\->new()\*(C'\fR. For example, you could set the
\&\f(CW\*(C`year\*(C'\fR or \f(CW\*(C`time_zone\*(C'\fR to defaults:
.Sp
.Vb 1
\&    extra => { year => 2004, time_zone => "Australia/Sydney" },
.Ve
.IP "\(bu" 4
\&\fBconstructor\fR is either an arrayref or a coderef. If an arrayref
then the first element is a class name or object, and the second
element is a method name (or coderef since Perl allows that sort of
thing).  The arguments to the call are anything in \f(CW$p\fR and
anything given in the \f(CW\*(C`extra\*(C'\fR option above.
.Sp
If only a coderef is supplied, then it is called with arguments of
\&\f(CW$self\fR, \f(CW$p\fR and \f(CW\*(C`extra\*(C'\fR.
.Sp
In short:
.Sp
.Vb 1
\&            $self\->$coderef( %$p, %{ $self\->{extra} } );
.Ve
.Sp
The method is expected to return a valid DateTime object,
or undef in event of failure, but can conceivably return anything
it likes. So long as it's 'true'.
.SH "SUPPORT"
.IX Header "SUPPORT"
See DateTime::Format::Builder for details.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\f(CW\*(C`datetime@perl.org\*(C'\fR mailing list.
.PP
http://datetime.perl.org/
.PP
perl, DateTime,
DateTime::Format::Builder
.SH "AUTHORS"
.IX Header "AUTHORS"
.IP "\(bu" 4
Dave Rolsky <autarch@urth.org>
.IP "\(bu" 4
Iain Truskett
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is Copyright (c) 2013 by Dave Rolsky.
.PP
This is free software, licensed under:
.PP
.Vb 1
\&  The Artistic License 2.0 (GPL Compatible)
.Ve