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#!/usr/bin/env perl
use strict;
use warnings;
use 5.010;
our $VERSION = '0.01';
use Getopt::Long qw(:config no_ignore_case);
use List::Util qw(first max);
use Travel::Status::DE::DeutscheBahn;
my %train_type;
my ( $date, $time );
my $filter_via;
my $ignore_late = 0;
my $types = q{};
my @output;
binmode( STDOUT, ':encoding(utf-8)' );
GetOptions(
'd|date=s' => \$date,
'h|help' => sub { show_help(0) },
'L|ignore-late' => \$ignore_late,
'm|mot=s' => \$types,
't|time=s' => \$time,
'v|via=s' => \$filter_via,
'V|version' => \&show_version,
) or show_help(1);
for my $type ( split( qr{,}, $types ) ) {
if ( substr( $type, 0, 1 ) eq q{!} ) {
$train_type{ substr( $type, 1 ) } = 0;
}
else {
$train_type{$type} = 1;
}
}
my $status = Travel::Status::DE::DeutscheBahn->new(
date => $date,
mot => \%train_type,
station => shift,
time => $time,
);
sub show_help {
my ($code) = @_;
print 'Usage: db-ris [-d <dd.mm.yyyy>] [-m <motlist>] [-t <time>] '
. "[-v <via>] <station>\n"
. "See also: man db-ris\n";
exit $code;
}
sub show_version {
say "db-ris version ${VERSION}";
exit 0;
}
sub display_result {
my (@lines) = @_;
my @line_length;
if ( not @lines ) {
die("Nothing to show\n");
}
for my $i ( 0 .. 5 ) {
$line_length[$i] = max map { length( $_->[$i] ) } @lines;
}
for my $line (@lines) {
printf( join( q{ }, ( map { "%-${_}s" } @line_length ) ) . "\n",
@{$line}, );
}
return;
}
sub filter_info {
my ($info) = @_;
if ( $info =~ m{ ^ (?: p.nktlich | k [.] A [.] ) $ }ox ) {
return q{};
}
return $info;
}
sub filter_via {
my (@via) = @_;
my ( @via_main, @via_show, $last_stop );
for my $stop (@via) {
if ( $stop =~ m{ ?Hbf} ) {
push( @via_main, $stop );
}
}
$last_stop = pop(@via);
if ( @via_main and @via and $via[0] eq $via_main[0] ) {
shift(@via_main);
}
if ( @via < 3 ) {
@via_show = @via;
}
else {
@via_show = splice( @via, 0, ( @via_main > 2 ? 1 : 3 - @via_main ) );
while ( @via_show < 3 and @via_main ) {
my $stop = shift(@via_main);
if ( $stop ~~ \@via_show or $stop eq $last_stop ) {
next;
}
push( @via_show, $stop );
}
}
for my $stop (@via_show) {
$stop =~ s{ ?Hbf}{};
}
return @via_show;
}
for my $d ( $status->results() ) {
my ( @via, @via_main, @via_show );
my $re_late = qr{ (?: ^ | , ) ca[.] \s \d+ \s Minuten \s sp.ter}ox;
@via = $d->route;
if ( $filter_via and not( first { $_ =~ m{$filter_via}io } @via ) ) {
next;
}
if ( $ignore_late and $d->info =~ $re_late ) {
next;
}
push(
@output,
[
$d->time, $d->train,
join( q{ }, filter_via(@via) ), $d->destination,
$d->platform, filter_info( $d->info )
]
);
}
display_result(@output);
__END__
=head1 NAME
db-ris - Interface to the DeutscheBahn online departure monitor
=head1 SYNOPSIS
B<db-ris> [B<-d> I<date>] [B<-m> I<motlist>] [B<-t> I<time>] [B<-v> I<via>]
I<station>
=head1 VERSION
version 0.01
=head1 DESCRIPTION
db-ris is an interface to the DeutscheBahn departure monitor
available at L<http://reiseauskunft.bahn.de/bin/bhftafel.exe/dn>.
It requests all departures at I<station> (optionally filtered by date, time,
route and means of transport) and lists them on stdout, similar to the big
departure screens installed at most main stations.
=head1 OPTIONS
=over
=item B<-d>, B<--date> I<dd>.I<mm>.I<yyyy>
Date to list departures for. Default: today.
=item B<-L>, B<--ignore-late>
Do not display delayed trains.
=item B<-m>, B<--mot> I<motlist>
Comma-separated list of modes of transport to show/hide. Accepts the following
argements:
ice InterCity Express trains
ic_ec InterCity / EuroCity trains
d InterRegio and similar
nv "Nahverkehr", RegionalExpress and such
s S-Bahn
bus
ferry
u U-Bahn
tram
You can prefix an argument with "!" to hide it. The default is C<<
ice,ic_ec,d,nv,s >>. Note that B<-m> does not replace the default, so if you
only want to see S-Bahn und U-Bahn departures, you'd have to use C<< -m
!ice,!ic_ec,!d,!nv,u >>.
=item B<-t>, B<--time> I<hh>:I<mm>
Time to list departures for. Default: now.
=item B<-v>, B<--via> I<regex>
Only display trains whose route (all stations between the current stop and the
destination) matches the perl regular expression I<regex>. The match is not
case-sensitive. Use '^regex$' to match a full string, but be aware that this
may not work as expected.
=item B<-V>, B<--version>
Show version information.
=back
=head1 EXIT STATUS
Zero unless things went wrong.
=head1 CONFIGURATION
None.
=head1 DEPENDENCIES
=over
=item * Class::Accessor(3pm)
=item * LWP::UserAgent(3pm)
=item * XML::LibXML(3pm)
=back
=head1 BUGS AND LIMITATIONS
There are a few character encoding problems (most notably, B<--via> does not
understand UTF-8 umlauts).
=head1 AUTHOR
Copyright (C) 2011 by Daniel Friesel E<lt>derf@finalrewind.orgE<gt>
=head1 LICENSE
This program is licensed under the same terms as Perl itself.
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