1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
|
#!/usr/bin/env perl
# Copyright (C) 2020 Daniel Friesel
#
# SPDX-License-Identifier: BSD-2-Clause
use strict;
use warnings;
use 5.020;
use utf8;
use File::Slurp qw(write_file);
use IPC::Run3;
use JSON;
sub show_usage {
my ($exit_code) = @_;
say STDERR "Usage: db-wagenreihung-to-json <wagenreihung.pdf>\n";
say STDERR
"You can obtain the latest PDF from <https://data.deutschebahn.com/dataset/zugbildungsplanzugbildungsplan-zpar>";
exit $exit_code;
}
my @weekdays = (qw(Mo Di Mi Do Fr Sa So));
my @months = (qw(0 I II III IV V VI VII VIII IX X XI XII));
my %weekday = map { ( $weekdays[$_] => $_ ) } ( 0 .. $#weekdays );
my %month = map { ( $months[$_] => $_ ) } ( 0 .. $#months );
my %valid;
my $year;
sub parse_weekday_range {
my ($range) = @_;
my $ret = [ ( \0 ) x 7 ];
if ( length($range) == 2 ) {
$ret->[ $weekday{$range} ] = \1;
return $ret;
}
my ( $start, $end ) = split( qr{-}, $range );
for my $i ( $weekday{$start} .. $weekday{$end} ) {
$ret->[$i] = \1;
}
return $ret;
}
sub parse_weekdays {
my ($text) = @_;
if ( $text eq 'tgl.' ) {
return [ ( \1 ) x 7 ];
}
my $ret = [ ( \0 ) x 7 ];
for my $range ( split( qr{[+]}, $text ) ) {
my $new_ret = parse_weekday_range($range);
for my $i ( 0 .. 6 ) {
if ( ${ $new_ret->[$i] } ) {
$ret->[$i] = \1;
}
}
}
return $ret;
}
sub parse_dates {
my ($text) = @_;
my @valid_ranges;
my @valid_dates;
my @invalid_dates;
my $mode = "range";
for my $date ( split( qr{,\s*}, $text ) ) {
if ( $date =~ m{^auch} ) {
$mode = "extra";
}
elsif ( $date =~ m{^nicht} ) {
$mode = "except";
}
elsif ( $date =~ m{^(ab|bis)} ) {
$mode = "range";
}
if ( $mode eq 'range'
and $date =~ m{ ^ ab \s* (?<day> \d{2} ) \. (?<month> [^.]* ) }x )
{
push( @valid_ranges, [ [ $+{month}, $+{day} ], undef ] );
}
elsif ( $mode eq 'range'
and $date =~ m{ ^ bis \s* (?<day> \d{2} ) \. (?<month> [^.]* ) }x )
{
push( @valid_ranges, [ undef, [ $+{month}, $+{day} ] ] );
}
elsif ( $date
=~ m{ ^ (?<fd> \d{2} ) \. (?<fm> [^-]+ )\. - (?<td> \d{2} ) \. (?<tm> [^.]* ) }x
)
{
push( @valid_ranges, [ [ $+{fm}, $+{fd} ], [ $+{tm}, $+{td} ] ] );
}
}
my %ret = (
valid => [],
invalid => [],
);
for my $range (@valid_ranges) {
my $from_date = $valid{from};
my $through_date = $valid{through};
if ( $range->[0] ) {
$from_date = sprintf( '%04d-%02d-%02d',
$year, $month{ $range->[0][0] },
$range->[0][1] );
}
if ( $range->[1] ) {
$through_date = sprintf( '%04d-%02d-%02d',
$year, $month{ $range->[1][0] },
$range->[1][1] );
}
push( @{ $ret{valid} }, "${from_date}/${through_date}" );
}
return %ret;
}
sub parse_condition {
my ($line) = @_;
my %ret;
if ( $line
=~ m{ ^ \s* (?<from> .*? ) \s - \s (?<to> [^,]+ ) , \s* (?<weekdays> (Mo|Di|Mi|Do|Fr|Sa|So|tgl[.]|[+]|-)+) \s* (?<dates> .* ) $ }x
)
{
$ret{from} = $+{from};
$ret{to} = $+{to};
$ret{weekdays} = parse_weekdays( $+{weekdays} );
my %validity = parse_dates( $+{dates} );
while ( my ( $k, $v ) = each %validity ) {
$ret{$k} = $v;
}
$ret{raw} = $line;
}
else {
$ret{raw} = $line;
}
return {%ret};
}
if ( @ARGV == 0 ) {
show_usage(1);
}
run3( [ "which", "pdftotext" ], \undef, \undef, \undef );
if ($?) {
say STDERR
"Error: db-wagenreihung-to-json depends on the pdftotext utility, but could not find it on this system.\n";
say STDERR
"On Debian and derivatives, it should be available in the 'poppler-utils' package.";
exit 2;
}
my $wr_pdf = $ARGV[0];
my $wr_txt;
my $command = [ "pdftotext", "-layout", "-nopgbrk", $wr_pdf, "/dev/stdout" ];
# stdin: /dev/null
# stdout: $wr_txt
# stderr: forwarded to terminal
run3( $command, \undef, \$wr_txt, undef,
{ binmode_stdout => ':encoding(utf-8)' } );
if ($?) {
my $exit_status = $? >> 8;
say STDERR
"\nError: 'pdftotext $wr_pdf' failed (exit status: $exit_status)";
exit 2;
}
my @lines = split( qr{\n}, $wr_txt );
my ( $type, $number );
my %map;
my %wagon_map;
my $state = "intro";
for my $line (@lines) {
if ( $line
=~ m{ ^ \s* Gültigkeit: \s* (?<fd> \d{2} ) \. (?<fm> \d{2} ) \. (?<fy> \d{4} ) \s* – \s* (?<td> \d{2} ) \. (?<tm> \d{2} ) \. (?<ty> \d{4} ) }x
)
{
%valid = (
"from" => sprintf( "%04d-%02d-%02d", $+{fy}, $+{fm}, $+{fd} ),
"through" => sprintf( "%04d-%02d-%02d", $+{ty}, $+{tm}, $+{td} ),
);
$year = $+{ty};
$map{valid} = {%valid};
}
if ( $state eq "intro" ) {
if ( $line =~ m{ ^ [A-Z] [.] \s* Zugbildungen $ }x ) {
$state = "";
}
else {
next;
}
}
if ( $line
=~ m{ ^ (?<type> [EINR][CJN][ A-Z-]{6}) (?<number> [ 0-9]{2,12}) }x )
{
$type = $+{type};
$type =~ tr{ }{}d;
$number = $+{number};
$number =~ tr{ }{}d;
if ( $number !~ m{ ^ \d+ $ }x ) {
next;
}
$state = "train_no";
#say "$type $number";
$map{$number} = {
raw => $type,
};
if ( $type eq 'ICE-A' ) {
$map{$number}{type} = 'ICE 1/2/4';
}
elsif ( $type eq 'ICE-W' ) {
$map{$number}{type} = 'ICE 3';
$map{$number}{short} = '3';
}
elsif ( $type eq 'ICE' ) {
$map{$number}{type} = 'ICE 1/2/4';
}
elsif ( $type eq 'ICE-T' ) {
$map{$number}{type} = 'ICE T';
$map{$number}{short} = 'T';
}
elsif ( $type eq 'IC-A' ) {
$map{$number}{type} = 'Metropolitan';
$map{$number}{short} = 'M';
}
elsif ( $type eq 'IC-D' ) {
$map{$number}{type} = 'IC2';
$map{$number}{short} = '2';
}
elsif ( $type eq 'IC-E' ) {
$map{$number}{type} = 'IC2 KISS';
$map{$number}{short} = '2';
}
else {
$map{$number}{type} = $type;
}
}
elsif ( $line =~ m{^LPF} ) {
# Not in passenger service ("Leehrfahrt"). Ignore it for now.
# FWIW, LPF(T) can be further distinguished:
# LPFT-A: ICE BR 401/402
# LPFT-B: ICE BR 412
# LPFT-T: ICE BR 411 / 415 / 605
# LPFT-W: ICE BR 403 / 406
$number = undef;
$state = "";
}
elsif ( $state eq "train_no" and $line =~ m{ ^ \s{2,6} \S }x ) {
$state = "route";
$map{$number}{route} = "";
}
# ICE types can be further distinguished by rolling stock. For instance,
# ICE 4 is the only ICE-A variant with restaurant and first-class seats
# in the same wagon ("ARmz").
elsif ( $number and $line =~ m{^\d*\s+ARmz} ) {
if ( $map{$number}{type} eq 'ICE 1/2/4' ) {
$map{$number}{type} = 'ICE 4';
$map{$number}{short} = '4';
}
}
elsif ( $number and $line =~ m{^\d*\s+WRmz} ) {
#say "ICE 1 / ICE 3 Redesign (WRmz)";
if ( $map{$number}{type} eq 'ICE 1/2/4' ) {
$map{$number}{type} = 'ICE 1';
$map{$number}{short} = '1';
}
elsif ( $map{$number}{type} eq 'ICE 3' ) {
$map{$number}{type} = 'ICE 3 Redesign';
$map{$number}{short} = '3R';
}
}
elsif ( $number and $line =~ m{^\d*\s+WRmbsz} ) {
#say "ICE 2 (WRmbsz)";
if ( $map{$number}{type} eq 'ICE 1/2/4' ) {
$map{$number}{type} = 'ICE 2';
$map{$number}{short} = '2';
}
}
elsif ( $number and $line =~ m{^\d*\s+Bpmbsz} ) {
#say "ICE 3 Velaro";
if ( $map{$number}{type} eq 'ICE 3' ) {
$map{$number}{type} = 'ICE 3 Velaro';
$map{$number}{short} = '3V';
}
}
elsif ( $number and $line =~ m{^\d*\s+[AB][pv]m} ) {
if ( $map{$number}{type} eq 'IC2' or $map{$number}{type} eq 'IC2 KISS' )
{
# Zugbildungsplan go home, you're drunk. Wagons of IC2 double decker
# trains must start with D (indicating that they double decker
# wagons). If an IC2 train has other wagons, it isn't really an IC2
# train. Observed on IC 2006 Stuttgart – Dortmund, which is planned as
# IC-D, but actually uses IC1 wagons.
$map{$number}{type} = 'IC';
}
}
if ( $state eq "route" and $line =~ m{ ^ \s{2,6} (?<route> .* ) $ }x ) {
if ( length( $map{$number}{route} ) ) {
$map{$number}{route} .= ' ';
}
$map{$number}{route} .= $+{route};
}
elsif ( $state eq "route" and $line eq "" ) {
$state = "conditions";
}
elsif ( $state eq "conditions" and $line =~ m{ Hg | Tfz | BrH }x ) {
$state = "details";
}
if ( $number
and $line
=~ m{ ^ \d* \s{1,10} (?<type> D? (WL)? (A|AB|B|W) R? D? [aceimpvw] \S* ) \s* (?<number> \d+ )? (?: $ | \s{3} ) }x
)
{
$state = "wagonorder";
push( @{ $wagon_map{$number} }, [ $+{type}, $+{number} ] );
#$map{$number}{has_wagon}{$1} = \1;
$map{$number}{wagons}{$1} = \1;
}
if ( $state eq "conditions" and length($line) and $line =~ m{ \S }x ) {
push( @{ $map{$number}{conditions} }, parse_condition($line) );
}
if ( $state eq "details"
and length($line)
and $line =~ m{ Hg | Tfz | BrH }x )
{
push( @{ $map{$number}{details} }, $line );
}
}
for my $train_number ( keys %map ) {
my $wagon_numbers_ok = 1;
my $wagon_types_ok = 1;
my %bincount;
my %type_by_wagon_number;
for my $wagon ( @{ $wagon_map{$train_number} // [] } ) {
my ( $wagon_type, $wagon_number ) = @{$wagon};
if ( not $wagon_number ) {
$wagon_numbers_ok = 0;
}
else {
$bincount{$wagon_number}++;
push( @{ $type_by_wagon_number{$wagon_number} }, $wagon_type );
}
}
if ($wagon_numbers_ok) {
for my $wagon ( @{ $wagon_map{$train_number} // [] } ) {
my ( $wagon_type, $wagon_number ) = @{$wagon};
$map{$train_number}{wagon}{ $wagon->[1] } = $wagon_type;
if ( $bincount{$wagon_number} > 1 ) {
if ( $type_by_wagon_number{$wagon_number}[0] ne
$type_by_wagon_number{$wagon_number}[1] )
{
$wagon_types_ok = 0;
}
}
}
}
if ( not $wagon_types_ok ) {
# train type may differ depending on date of week or similar. We don't
# parse/handle that yet.
delete $map{$train_number}{type};
delete $map{$train_number}{short};
delete $map{$train_number}{wagon};
delete $map{$train_number}{has_wagon};
}
}
# use canonical output (i.e., sort hash keys) to allow for easy diffing.
#say JSON->new->utf8->canonical->encode( {valid => {%valid}, train => {%map}} );
say JSON->new->utf8->canonical->encode( {%map} );
|