/usr/share/perl5/HTML/Microformats/Datatype/DateTime.pm is in libhtml-microformats-perl 0.104-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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HTML::Microformats::Datatype::DateTime - dates and datetimes
=head1 SYNOPSIS
my $duration = HTML::Microformats::Datatype::DateTime->now;
print "$duration\n";
=cut
package HTML::Microformats::Datatype::DateTime;
use base qw(DateTime HTML::Microformats::Datatype);
use DateTime;
use DateTime::Format::Natural;
use DateTime::Format::Strptime;
use HTML::Microformats::Datatype::DateTime::Parser;
use HTML::Microformats::Datatype::String qw();
use HTTP::Date;
use Object::AUTHORITY;
BEGIN {
$HTML::Microformats::Datatype::DateTime::AUTHORITY = 'cpan:TOBYINK';
$HTML::Microformats::Datatype::DateTime::VERSION = '0.104';
}
=head1 DESCRIPTION
This class inherits from DateTime, so supports all of DateTime's methods.
=head2 Constructors
This class inherits from DateTime, so DateTime's standard constructors (C<new>,
C<now>, etc) should work. Also:
=over 4
=item C<< $dt = HTML::Microformats::Datatype::DateTime->parse($string, $elem, $context, [$tz], [$base]) >>
Creates a new HTML::Microformats::Datatype::DateTime object.
$tz is the timezone to use (if it can't be figured out) and $base is a base datetime to use for
relative datetimes, whatever that means.
=back
=cut
sub parse
{
my $class = shift;
my $string = shift;
my $elem = shift||undef;
my $page = shift||undef;
my $tz = shift||undef;
my $base = shift||undef;
return $class->_microformat_datetime($string, $tz, $base);
}
sub _microformat_datetime
{
my $class = shift;
my $dt = $class->_microformat_datetime_helper(@_);
return undef unless $dt;
# Super-dangerous: reblessing an already-blessed object.
bless $dt, 'HTML::Microformats::Datatype::DateTime';
}
sub _microformat_datetime_helper
# Very tolerant DateTime parsing. Microformats are supposed to always use W3CDTF,
# but we'll be lenient and do our best to parse other ISO 8601 formats, and if
# that fails, even try to parse natural language.
{
my $class = shift;
my $string = shift;
my $tz = shift || 'UTC';
my $base = shift || undef;
my $f;
my $dt;
$string = $string->{string} if HTML::Microformats::Datatype::String::isms($string);
my $parser = __PACKAGE__ . '::Parser';
if ($base)
{ $f = $parser->new(base_datetime => $base); }
else
{ $f = $parser->new; }
eval {
my $isostring = $string;
$isostring =~ s/([\+\-]\d\d)([014][50])$/$1\:$2/;
$dt = $f->parse_datetime($isostring);
$dt->{resolution} = $f->{resolution};
if ($dt->{resolution} eq 'end')
{
$dt = $dt->add( days => 1 );
$dt->{resolution} = 'day';
}
};
unless ($dt)
{
eval {
my $time = str2time($string);
$dt = DateTime->from_epoch( epoch => $time );
$dt->{resolution} = 'second' unless ($dt->{resolution});
};
}
unless ($dt)
{
$f = DateTime::Format::Natural->new(
lang => 'en', # Should read this from source input
prefer_future => 1,
daytime => {
morning => 9,
afternoon => 13,
evening => 20
},
time_zone => "$tz"
);
$dt = $f->parse_datetime($string);
$dt->{resolution} = 'second' unless $dt->{resolution};
return undef unless $f->success;
}
return undef unless $dt;
my %pattern = (
year => '%Y',
month => '%Y-%m',
week => '%F',
day => '%F',
hour => '%FT%H:%M',
minute => '%FT%H:%M',
second => '%FT%H:%M:%S',
nanosecond => '%FT%T.%9N'
);
my %tz_pattern = (
year => '%Y',
month => '%Y-%m',
week => '%F',
day => '%F',
hour => '%FT%H:%M%z',
minute => '%FT%H:%M%z',
second => '%FT%H:%M:%S%z',
nanosecond => '%FT%T.%9N%z'
);
if ($dt->year >= 100000)
{
foreach my $x (keys %pattern)
{
$pattern{$x} = '+'.$pattern{$x};
$tz_pattern{$x} = '+'.$tz_pattern{$x};
}
}
elsif ($dt->year >= 10000)
{
foreach my $x (keys %pattern)
{
$pattern{$x} = '+0'.$pattern{$x};
$tz_pattern{$x} = '+0'.$tz_pattern{$x};
}
}
if ($dt->{tz}->{name} eq 'floating')
{
$dt->set_formatter(DateTime::Format::Strptime->new(
pattern => ( $pattern{$dt->{resolution}} )
));
}
else
{
$dt->set_formatter(DateTime::Format::Strptime->new(
pattern => ( $tz_pattern{$dt->{resolution}} )
));
}
return $dt;
}
=head2 Public Methods
=over 4
=item C<< $d->to_string >>
Returns a literal string.
=cut
sub to_string
{
my $self = shift;
my $type = $self->datatype;
if ($type eq 'http://www.w3.org/2001/XMLSchema#gYear')
{
return $self->strftime('%Y');
}
elsif ($type eq 'http://www.w3.org/2001/XMLSchema#gYearMonth')
{
return $self->strftime('%Y-%m');
}
elsif ($type eq 'http://www.w3.org/2001/XMLSchema#date')
{
return $self->strftime('%Y-%m-%d');
}
else
{
return "$self";
}
}
=item C<< $d->datatype >>
Returns an the RDF datatype URI representing the data type of this literal.
=back
=cut
sub datatype
{
my $self = shift;
if($self->{datatype})
{ return $self->{datatype}; }
elsif ($self->{resolution} eq 'year')
{ return 'http://www.w3.org/2001/XMLSchema#gYear'; }
elsif ($self->{resolution} eq 'month')
{ return 'http://www.w3.org/2001/XMLSchema#gYearMonth'; }
elsif ($self->{resolution} eq 'day')
{ return 'http://www.w3.org/2001/XMLSchema#date'; }
return 'http://www.w3.org/2001/XMLSchema#dateTime';
}
sub TO_JSON
{
return "$_[0]";
}
1;
__END__
=head1 BUGS
Please report any bugs to L<http://rt.cpan.org/>.
=head1 SEE ALSO
L<HTML::Microformats>,
L<HTML::Microformats::Datatype>,
L<DateTime>.
=head1 AUTHOR
Toby Inkster E<lt>tobyink@cpan.orgE<gt>.
=head1 COPYRIGHT
Copyright 2008-2011 Toby Inkster
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
=head1 DISCLAIMER OF WARRANTIES
THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
=cut
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