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package Travel::Status::DE::DeutscheBahn;
use strict;
use warnings;
use 5.010;
use Carp qw(confess);
use LWP::UserAgent;
use POSIX qw(strftime);
use Travel::Status::DE::DeutscheBahn::Departure;
use XML::LibXML;
our $VERSION = '0.0';
sub new {
my ( $obj, %conf ) = @_;
my $date = strftime( '%d.%m.%Y', localtime(time) );
my $time = strftime( '%H:%M', localtime(time) );
my $ua = LWP::UserAgent->new();
if ( not $conf{station} ) {
confess('You need to specify a station');
}
my $ref = {
post => {
input => $conf{station},
inputRef => q{#},
date => $conf{date} || $date,
time => $conf{time} || $time,
productsFilter => '1111101000000000',
REQTrain_name => q{},
maxJourneys => 20,
delayedJourney => undef,
start => 'Suchen',
boardType => 'Abfahrt',
ao => 'yes',
},
};
$ref->{html}
= $ua->post( 'http://reiseauskunft.bahn.de/bin/bhftafel.exe/dn?rt=1',
$ref->{post} )->content();
$ref->{tree} = XML::LibXML->load_html(
string => $ref->{html},
recover => 2,
suppress_errors => 1,
suppress_warnings => 1,
);
return bless( $ref, $obj );
}
sub new_from_html {
my ( $obj, $html ) = @_;
my $ref = { html => $html, };
$ref->{tree} = XML::LibXML->load_html(
string => $ref->{html},
recover => 2,
suppress_errors => 1,
suppress_warnings => 1,
);
return bless( $ref, $obj );
}
sub departures {
my ($self) = @_;
my $xp_element = XML::LibXML::XPathExpression->new(
'//table[@class="result stboard dep"]/tr');
my $xp_time = XML::LibXML::XPathExpression->new('./td[@class="time"]');
my $xp_train = XML::LibXML::XPathExpression->new('./td[@class="train"]');
my $xp_route = XML::LibXML::XPathExpression->new('./td[@class="route"]');
my $xp_dest = XML::LibXML::XPathExpression->new('./td[@class="route"]//a');
my $xp_platform
= XML::LibXML::XPathExpression->new('./td[@class="platform"]');
my $xp_info = XML::LibXML::XPathExpression->new('./td[@class="ris"]');
my $re_via = qr{
^ \s* (.+?) \s* \n
\d{1,2}:\d{1,2}
}mx;
for my $tr ( @{ $self->{tree}->findnodes($xp_element) } ) {
my ($n_time) = $tr->findnodes($xp_time);
my ( undef, $n_train ) = $tr->findnodes($xp_train);
my ($n_route) = $tr->findnodes($xp_route);
my ($n_dest) = $tr->findnodes($xp_dest);
my ($n_platform) = $tr->findnodes($xp_platform);
my ($n_info) = $tr->findnodes($xp_info);
my $first = 1;
if ( not( $n_time and $n_dest ) ) {
next;
}
my $time = $n_time->textContent();
my $train = $n_train->textContent();
my $route = $n_route->textContent();
my $dest = $n_dest->textContent();
my $platform = $n_platform->textContent();
my $info = $n_info->textContent();
my @via;
for my $str ( $time, $train, $dest, $platform, $info ) {
$str =~ s/\n//mg;
$str =~ tr/ //s;
}
$info =~ s/,Grund//;
while ( $route =~ m{$re_via}g ) {
if ($first) {
$first = 0;
next;
}
my $stop = $1;
push( @via, $stop );
}
push(
@{ $self->{departures} },
Travel::Status::DE::DeutscheBahn::Departure->new(
time => $time,
train => $train,
route_raw => $route,
route => \@via,
destination => $dest,
platform => $platform,
info => $info,
)
);
}
return @{ $self->{departures} };
}
1;
__END__
=head1 NAME
Travel::Status::DE::DeutscheBahn - Interface to the DeutscheBahn online
departure monitor
=head1 SYNOPSIS
use Travel::Status::DE::DeutscheBahn;
my $status = Travel::Status::DE::DeutscheBahn->new(
station => 'Essen Hbf',
);
for my $departure ($status->departures) {
printf(
"At %s: %s to %s from platform %s\n",
$departure->time,
$departure->train,
$departure->destination,
$departure->platform,
);
}
=head1 VERSION
version 0.0
=head1 DESCRIPTION
Travel::Status::DE::DeutscheBahn is an interface to the DeutscheBahn
arrival/departure monitor available at
L<http://reiseauskunft.bahn.de/bin/bhftafel.exe/dn>.
It takes a station name and (optional) date and time and reports all
departures at that station starting at the specified point in time (now if
unspecified). By default, it will list the next 20 departures.
=head1 METHODS
=over
=item my $status = Travel::Status::DE::DeutscheBahn->new(I<%opts>)
Returns a new Travel::Status::DE::DeutscheBahn element. Supported I<opts> are:
=over
=item B<station> => I<station>
The train station to report for, e.g. "Essen HBf". Mandatory.
=item B<date> => I<dd>.I<mm>.I<yyyy>
Date to report for. Defaults to the current day.
=item B<time> => I<hh>:I<mm>
Time to report for. Defaults to now.
=back
=item $status->departures()
Returns a list of departures (20 by default). Each list element is a
Travel::Status::DE::DeutscheBahn::Departure(3pm) object.
=back
=head1 DIAGNOSTICS
None.
=head1 DEPENDENCIES
=over
=item * Class::Accessor(3pm)
=item * LWP::UserAgent(3pm)
=item * XML::LibXML(3pm)
=back
=head1 BUGS AND LIMITATIONS
The web interface also offers arrival monitoring. This is not yet supported
in this module.
=head1 SEE ALSO
mris(1), Travel::Status::DE::DeutscheBahn::Departure(3pm).
=head1 AUTHOR
Copyright (C) 2011 by Daniel Friesel E<lt>derf@finalrewind.orgE<gt>
=head1 LICENSE
This module is licensed under the same terms as Perl itself.
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