This file is indexed.

/usr/share/perl5/Debian/Control/Stanza.pm is in libdebian-source-perl 0.94.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
=head1 NAME

Debian::Control::Stanza - single stanza of Debian source package control file

=head1 SYNOPSIS

    package Binary;
    use base 'Debian::Control::Stanza';
    use constant fields => qw( Package Depends Conflicts );

    1;

=head1 DESCRIPTION

Debian::Control::Stanza ins the base class for
L<Debian::Control::Stanza::Source> and L<Debian::Control::Stanza::Binary>
classes.

=cut

package Debian::Control::Stanza;

require v5.10.0;

use strict;
use warnings;

our $VERSION = '0.94';

use base qw( Class::Accessor Tie::IxHash );

use Carp qw(croak);
use Debian::Control::Stanza::CommaSeparated;
use Debian::Dependencies;

=head1 FIELDS

Stanza fields are to be defined in the class method I<fields>. Typically this
can be done like:

    use constant fields => qw( Foo Bar Baz );

Fields that are to contain dependency lists (as per L</is_dependency_list>
method below) are automatically converted to instances of the
L<Debian::Dependencies> class.

=cut

use constant fields => ();

sub import {
    my( $class ) = @_;

    $class->mk_accessors( $class->fields );
}

use overload '""' => \&as_string;

=head1 CONSTRUCTOR

=over

=item new

=item new( { field => value, ... } )

Creates a new L<Debian::Control::Stanza> object and optionally initializes it
with the supplied data. The object is hashref based and tied to L<Tie::IxHash>.

You may use dashes for initial field names, but these will be converted to
underscores:

    my $s = Debian::Control::Stanza::Source( {Build-Depends => "perl"} );
    print $s->Build_Depends;

=back

=cut

sub new {
    my $class = shift;
    my $init = shift || {};

    my $self = Tie::IxHash->new;

    bless $self, $class;

    while( my($k,$v) = each %$init ) {
        $k =~ s/-/_/g;
        $self->can($k)
            or croak "Invalid field given ($k)";
        $self->$k($v);
    }

    # initialize any dependency lists with empty placeholders
    # same for comma-separated lists
    for( $self->fields ) {
        if ( $self->is_dependency_list($_) and not $self->$_ ) {
            $self->$_( Debian::Dependencies->new );
        }
        elsif ( $self->is_comma_separated($_) and not $self->$_ ) {
            $self->$_( Debian::Control::Stanza::CommaSeparated->new );
        }
    }


    return $self;
}

=head1 METHODS

=over

=item is_dependency_list($field)

Returns true if I<$field> contains a list of dependencies. By default returns true for the following fields:

=over

=item Build_Depends

=item Build_Depends_Indep

=item Build_Conflicts

=item Build_Conflicts_Indep

=item Depends

=item Conflicts

=item Enhances

=item Replaces

=item Breaks

=item Pre_Depends

=item Recommends

=item Suggests

=back

=cut

our %dependency_list = map(
    ( $_ => 1 ),
    qw( Build-Depends Build-Depends-Indep Build-Conflicts Build-Conflicts-Indep
    Depends Conflicts Enhances Replaces Breaks Pre-Depends Recommends Suggests ),
);

sub is_dependency_list {
    my( $self, $field ) = @_;

    $field =~ s/_/-/g;

    return exists $dependency_list{$field};
}

=item is_comma_separated($field)

Returns true if the given field is to contain a comma-separated list of values.
This is used in stringification, when considering where to wrap long lines.

By default the following fields are flagged to contain such lists:

=over

=item All fields that contain dependencies (see above)

=item Uploaders

=item Provides

=back

=cut

our %comma_separated = map(
    ( $_ => 1 ),
    keys %dependency_list,
    qw( Uploaders Provides ),
);

sub is_comma_separated {
    my( $self, $field ) = @_;

    $field =~ s/_/-/g;

    return exists $comma_separated{$field};
}

=item get($field)

Overrides the default get method from L<Class::Accessor> with L<Tie::IxHash>'s
FETCH.

=cut

sub get {
    my( $self, $field ) = @_;

    $field =~ s/_/-/g;

    return $self->FETCH($field);
}

=item set( $field, $value )

Overrides the default set method from L<Class::Accessor> with L<Tie::IxHash>'s
STORE. In the process, converts I<$value> to an instance of the
L<Debian::Dependencies> class if I<$field> is to contain dependency list (as
determined by the L</is_dependency_list> method).

=cut

sub set {
    my( $self, $field, $value ) = @_;

    chomp($value);

    $field =~ s/_/-/g;

    $value = Debian::Dependencies->new($value)
        if not ref($value) and $self->is_dependency_list($field);

    $value = Debian::Control::Stanza::CommaSeparated->new($value)
        if not ref($value) and $self->is_comma_separated($field);

    return $self->STORE( $field,  $value );
}

=item as_string([$width])

Returns a string representation of the object. Ready to be printed into a
real F<debian/control> file. Used as a stringification operator.

Fields that are comma-separated use one line per item, except if they are like
C<${some:Field}>, in which case they are wrapped at I<$width>th column.
I<$width> defaults to 80.

=cut

use Text::Wrap ();

sub as_string
{
    my ( $self, $width ) = @_;
    $width //= 80;

    my @lines;

    $self->Reorder( map{ ( my $s = $_ ) =~ s/_/-/g; $s } $self->fields );

    for my $k ( $self->Keys ) {
        # We don't' want the internal fields showing in the output
        next if $k =~ /^-/;     # _ in field names is replaced with dashes
        my $v = $self->FETCH($k);
        next unless defined($v);
        next if $self->is_dependency_list($k) and "$v" eq "";
        next if $self->is_comma_separated($k) and "$v" eq "";

        my $line;

        if ( $self->is_comma_separated($k) ) {
            # FIXME: this relies on $v being sorted
            my ( @pre_dollar, @dollar, @post_dollar );
            for ( @$v ) {
                if ( /^\$\{.+}$/ ) {
                    push @dollar, $_;
                }
                elsif (@dollar) {
                    push @post_dollar, $_;
                }
                else {
                    push @pre_dollar, $_;
                }
            }

            if ( @pre_dollar ) {
                $line = "$k: " . join( ",\n ", @pre_dollar );
                local $Text::Warp::break = qr/, /;
                local $Text::Warp::columns = $width;
                local $Text::Wrap::separator = ",\n";
                local $Text::Wrap::huge = 'overflow';
                $line .= Text::Wrap::wrap( ' ', ' ', join( ', ', @dollar ) );
            }
            else {
                local $Text::Warp::break = qr/, /;
                local $Text::Warp::columns = $width;
                local $Text::Wrap::separator = ",\n";
                local $Text::Wrap::huge = 'overflow';
                $line
                    = Text::Wrap::wrap( "$k: ", ' ', join( ', ', @dollar ) );
            }

            $line = join( ",\n ", $line, @post_dollar );
        }
        else {
            $line = "$k: $v";
        }

        push @lines, $line if $line;
    }

    return join( "\n", @lines ) . "\n";
}

=back

=head1 COPYRIGHT & LICENSE

Copyright (C) 2009 Damyan Ivanov L<dmn@debian.org>

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License version 2 as published by the Free
Software Foundation.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.

=cut

1;