package DateTime::Format::Natural::Rewrite;
use strict;
use warnings;
our $VERSION = '0.05';
sub _rewrite
{
my $self = shift;
my ($date_string) = @_;
$self->_rewrite_regular($date_string);
$self->_rewrite_aliases($date_string);
$self->_rewrite_conditional($date_string);
}
sub _rewrite_regular
{
my $self = shift;
my ($date_string) = @_;
$$date_string =~ tr/,//d;
$$date_string =~ s/\s+?(am|pm)\b/$1/i;
}
sub _rewrite_conditional
{
my $self = shift;
my ($date_string) = @_;
my $rewrite = $self->{data}->{rewrite};
if ($$date_string =~ $rewrite->{at}{match}) {
my $last_token = (split /\s+/, $$date_string)[-1];
my @regexes = (
(map $self->{data}->__RE($_), qw(time time_am time_pm)),
$rewrite->{at}{daytime},
);
foreach my $regex (@regexes) {
if ($last_token =~ $regex) {
$$date_string =~ s/$rewrite->{at}{subst}//;
$$date_string .= ':00' if $$date_string =~ /\s+?\d{1,2}$/;
last;
}
}
}
}
sub _rewrite_aliases
{
my $self = shift;
my ($date_string) = @_;
my $aliases = $self->{data}->{aliases};
if ($$date_string =~ /\s+/) {
foreach my $type (qw(words tokens)) {
foreach my $alias (keys %{$aliases->{$type}}) {
if ($alias =~ /^\w+$/) {
$$date_string =~ s/\b $alias \b/$aliases->{$type}{$alias}/ix;
}
else {
$$date_string =~ s/(?:^|(?<=\s)) $alias (?:(?=\s)|$)/$aliases->{$type}{$alias}/ix;
}
}
}
}
else {
foreach my $alias (keys %{$aliases->{words}}) {
$$date_string =~ s/^ $alias $/$aliases->{words}{$alias}/ix;
}
foreach my $alias (keys %{$aliases->{short}}) {
$$date_string =~ s/(?<=\d) $alias $/$aliases->{short}{$alias}/ix;
}
}
}
1;
__END__
=head1 NAME
DateTime::Format::Natural::Rewrite - Aliasing and rewriting of date strings
=head1 SYNOPSIS
Please see the DateTime::Format::Natural documentation.
=head1 DESCRIPTION
The C<DateTime::Format::Natural::Rewrite> class handles aliases and regular
rewrites of date strings.
=head1 SEE ALSO
L<DateTime::Format::Natural>
=head1 AUTHOR
Steven Schubiger <schubiger@cpan.org>
=head1 LICENSE
This program is free software; you may redistribute it and/or
modify it under the same terms as Perl itself.
See L<http://dev.perl.org/licenses/>
=cut