package Travel::Status::DE::VRR; use strict; use warnings; use 5.010; our $VERSION = '0.01'; use Carp qw(confess); use Travel::Status::DE::VRR::Result; use WWW::Mechanize; use XML::LibXML; sub new { my ( $class, %opt ) = @_; my $mech = WWW::Mechanize->new(); my @now = localtime( time() ); if ( not( $opt{place} and $opt{name} ) ) { confess('You need to specify a place and a name'); } if ( $opt{type} and not( $opt{type} ~~ [qw[stop address poi]] ) ) { confess('type must be stop, address or poi'); } my $self = { post => { command => q{}, deleteAssignedStops_dm => '1', help => 'Hilfe', itdDateDay => $now[3], itdDateMonth => $now[4] + 1, itdDateYear => $now[5] + 1900, itdLPxx_id_dm => ':dm', itdLPxx_mapState_dm => q{}, itdLPxx_mdvMap2_dm => q{}, itdLPxx_mdvMap_dm => '3406199:401077:NAV3', itdLPxx_transpCompany => 'vrr', itdLPxx_view => q{}, itdTimeHour => $now[2], itdTimeMinute => $now[1], language => 'de', nameInfo_dm => 'invalid', nameState_dm => 'empty', name_dm => $opt{name}, placeInfo_dm => 'invalid', placeState_dm => 'empty', place_dm => $opt{place}, ptOptionsActive => '1', requestID => '0', reset => 'neue Anfrage', sessionID => '0', submitButton => 'anfordern', typeInfo_dm => 'invalid', type_dm => $opt{type} // 'stop', useProxFootSearch => '0', useRealtime => '1', }, }; bless( $self, $class ); $mech->post( 'http://efa.vrr.de/vrr/XSLT_DM_REQUEST', $self->{post} ); if ( $mech->response->is_error ) { $self->{errstr} = $mech->response->status_line; return $self; } my $form = $mech->form_number(1); if ( not $form ) { $self->{errstr} = 'Unable to find the form - no lines returned?'; return $self; } for my $input ( $form->find_input( 'dmLineSelection', 'option' ) ) { $input->check(); } $mech->click('submitButton'); if ( $mech->response->is_error ) { $self->{errstr} = $mech->response->status_line; return $self; } $self->{html} = $mech->response->decoded_content; $self->{tree} = XML::LibXML->load_html( string => $self->{html}, recover => 2, suppress_errors => 1, suppress_warnings => 1, ); return $self; } sub new_from_html { my ( $class, %opt ) = @_; my $self = { html => $opt{html}, }; $self->{tree} = XML::LibXML->load_html( string => $self->{html}, recover => 2, suppress_errors => 1, suppress_warnings => 1, ); return bless( $self, $class ); } sub errstr { my ($self) = @_; return $self->{errstr}; } sub results { my ($self) = @_; my @results; my $xp_element = XML::LibXML::XPathExpression->new( '//td[@colspan="3"]/table/tr[starts-with(@class,"bgColor")]'); my @parts = ( [ 'time', './td[2]' ], [ 'platform', './td[3]' ], [ 'line', './td[5]' ], [ 'dest', './td[7]' ], [ 'info', './td[9]' ], ); @parts = map { [ $_->[0], XML::LibXML::XPathExpression->new( $_->[1] ) ] } @parts; for my $tr ( $self->{tree}->findnodes($xp_element) ) { my ( $time, $platform, $line, $dest, $info ) = map { ( $tr->findnodes( $_->[1] ) )[0]->textContent } @parts; push( @results, Travel::Status::DE::VRR::Result->new( time => $time, platform => $platform, line => $line, destination => $dest, info => $info, ) ); } return @results; } 1; __END__ =head1 NAME Travel::Status::DE::VRR - inofficial VRR departure monitor =head1 SYNOPSIS use Travel::Status::DE::VRR; my $status = Travel::Status::DE::VRR->new( place => 'Essen', name => 'Helenenstr' ); for my $d ($status->results) { printf( "%s %-8s %-5s %s\n", $d->time, $d->platform, $d->line, $d->destination ); } =head1 VERSION version 0.01 =head1 DESCRIPTION Travel::Status::DE::VRR is an inofficial interface to the VRR departure monitor available at L. It reports all upcoming tram/bus/train departures at a given place. =head1 METHODS =over =item my $status = Travel::Status::DE::VRR->new(I<%opt>) Requests the departures as specified by I and returns a new Travel::Status::DE::VRR object. Dies if the wrong I were passed. Arguments: =over =item B => I Name of the place/city =item B => B
|B|B Type of the following I. B means "point of interest". Defaults to B (stop/station name). =item B => I address / poi / stop name to list departures for. =back =item $status->errstr In case of an error in the HTTP requests, returns a string describing it. If no error occured, returns undef. =item $status->results Returns a list of Travel::Status::DE::VRR::Result(3pm) objects, each one describing one departure. =back =head1 DIAGNOSTICS None. =head1 DEPENDENCIES =over =item * Class::Accessor(3pm) =item * WWW::Mechanize(3pm) =item * XML::LibXML(3pm) =back =head1 BUGS AND LIMITATIONS Not all features of the web interface are supported. =head1 SEE ALSO efa-m(1), Travel::Status::DE::VRR::Result(3pm). =head1 AUTHOR Copyright (C) 2011 by Daniel Friesel Ederf@finalrewind.orgE =head1 LICENSE This module is licensed under the same terms as Perl itself.