/usr/share/perl5/Debian/Rules.pm is in dh-make-perl 0.80-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 | package Debian::Rules;
use strict;
use warnings;
our $VERSION = '0.66';
=head1 NAME
Debian::Rules - handy manipulation of debian/rules
=head1 SYNOPSIS
my $r = Debian::Rules->new('debian/rules');
my $r = Debian::Rules->new( { filename => 'debian/rules' } );
$r->is_dh7tiny && print "Using the latest and greatest\n";
$r->is_quiltified && print "quilt rules the rules\n";
# file contents changed externally
$r->parse;
$r->add_quilt;
$r->drop_quilt;
$r->write; # or undef($r);
=head1 DESCRIPTION
Some times, one needs to know whether F<debian/rules> uses the L<debhelper(1)>
7 tiny variant, or whether it is integrated with L<quilt(1)>. Debian::Rules
provides facilities to check this, as well as adding/removing quilt
integration.
Modified contents are written to file either vie the L</write> method, or when
the object reference goes out of scope (via DESTROY).
=head1 CONSTRUCTOR
C<new> is the standard L<Class::Accessor> constructor, with the exception that
if only one, non-reference argument is provided, it is treated as a value for
the L<filename> field.
If a file name is given, the constructor calls L</read> to read the file
contents into memory.
One of B<filename> or B<lines> is mandatory.
=head1 FIELDS
=over
=item filename
Contains the file name of the rules file.
=item lines
Reference to an array pointing to the rules file. Initialized by L</new>.
=back
=cut
use base 'Class::Accessor';
__PACKAGE__->mk_accessors(
qw(filename lines _is_dh7tiny _is_quiltified _parsed));
sub new {
my $class = shift;
my @params = @_;
# allow single argument to be treated as filename
@params = { filename => $params[0] }
if @params == 1 and not ref( $params[0] );
my $self = $class->SUPER::new(@params);
$self->filename or $self->lines or die "'filename' or 'lines' is mandatory";
$self->lines( [] ) unless $self->lines;
$self->read if $self->filename;
return $self;
}
=head1 METHODS
=over
=item parse
Parses the rules file and stores its findings for later use. Called
automatically by L<is_dh7tiny> and L<is_quiltified>. The result of the parsing
is cached and subsequent calls to C<is_XXX> use the cache. To force cache
refresh (for example if the contents of the file have been changed), call
C<parse> again.
=cut
sub parse {
my $self = shift;
$self->_is_dh7tiny(0);
$self->_is_quiltified(0);
for ( my $i = 1; $i < @{ $self->lines }; $i++ ) {
if ( $self->lines->[$i] =~ /^%:/
and $i + 1 < @{ $self->lines }
and $self->lines->[ $i + 1 ] =~ /^\tdh .*\$\@/ )
{
$self->_is_dh7tiny(1);
if ( $self->lines->[ $i + 1 ] =~ /--with[ =]quilt/ ) {
$self->_is_quiltified(1);
last;
}
}
}
$self->_parsed(1);
}
=item is_dh7tiny
Returns true if the contents of the rules file seem to use the so called
I<tiny> variant offered by debhelper 7. Tiny rules are detected by the
presence of the following two lines:
%:
dh $@
(any options on the C<dh> command line ignored).
=cut
sub is_dh7tiny {
my $self = shift;
$self->parse unless $self->_parsed;
return $self->_is_dh7tiny;
}
=item is_quiltified
Returns true if the contents of the rules file indicate that L<quilt(1)> is
used. Various styles of C<quilt> integration are detected:
=over
=item dh --with=quilt
=item F<quilt.make> with C<< $(QUILT_STAMPFN) >> and C<unpatch> targets.
=back
=cut
sub is_quiltified {
my $self = shift;
$self->parse unless $self->_parsed;
return $self->_is_quiltified;
}
=item add_quilt
Integrates L<quilt(1)> into the rules. For debhelper 7 I<tiny> rules (as
determined by L</is_dh7tiny>) C<--with=quilt> is added to every C<dh>
invocation. For the more traditional variant, quilt is integrated via
F<quilt.make> and its C<< $(QUILT_STAMPFN) >> and C<unpatch> targets.
=cut
sub add_quilt {
my $self = shift;
return if $self->is_quiltified;
my $lines = $self->lines;
if ( $self->is_dh7tiny) {
for (@$lines) {
# add --with=quilt to every dh call
s/(?<=\s)dh /dh --with=quilt /
unless /--with[= ]quilt/; # unless it is already there
}
}
else {
# non-dh7tiny
splice @$lines, 1, 0,
( '', 'include /usr/share/quilt/quilt.make' )
unless grep /quilt\.make/, @$lines;
push @$lines,
'',
'override_dh_auto_configure: $(QUILT_STAMPFN)',
"\tdh_auto_configure"
unless grep /QUILT_STAMPFN/, @$lines;
push @$lines, '', 'override_dh_auto_clean: unpatch',
"\tdh_auto_clean"
unless grep /override_dh_auto_clean:.*unpatch/, @$lines;
}
}
=item drop_quilt
Removes L<quilt(1)> integration. Both debhelper 7 I<tiny> style (C<dh
--with=quilt>) and traditional (C<< $(QUILT_STAMPFN) >> and C<unpatch>)
approaches are detected and removed.
=cut
sub drop_quilt {
my $self = shift;
my $lines = $self->lines;
# look for the quilt include line and remove it and the previous empty one
for ( my $i = 1; $i < @$lines; $i++ ) {
if ( $lines->[$i] eq 'include /usr/share/quilt/quilt.make' ) {
splice @$lines, $i, 1;
# collapse two sequencial empty lines
# NOTE: this won't work if the include statement was the last line
# in the rules, but this is highly unlikely
splice( @$lines, $i, 1 )
if $i < @$lines
and $lines->[$i] eq ''
and $lines->[ $i - 1 ] eq '';
last;
}
}
# remove the QUILT_STAMPFN dependency override
for ( my $i = 1; $i < @$lines; $i++ ) {
if ( $lines->[$i] eq ''
and $lines->[ $i + 1 ] eq
'override_dh_auto_configure: $(QUILT_STAMPFN)'
and $lines->[ $i + 2 ] eq "\tdh_auto_configure"
and $lines->[ $i + 3 ] eq '' )
{
splice @$lines, $i, 3;
last;
}
}
# also remove $(QUILT_STAMPFN) as a target dependency
# note that the override_dh_auto_configure is handled above because in that
# case the whole makefile snipped is to be removed
# Here we deal with the more generic cases
for ( my $i = 1; $i < @$lines; $i++ ) {
$lines->[$i] =~ s{
^ # at the beginning of the line
([^\s:]+): # target name, followed by a colon
(.*) # any other dependencies
\$\(QUILT_STAMPFN\) # followed by $(QUILT_STAMPFN)
}{$1:$2}x;
}
# remove unpatch dependency in clean
for ( my $i = 1; $i < @$lines; $i++ ) {
if ( $lines->[$i] eq 'override_dh_auto_clean: unpatch'
and $lines->[ $i + 1 ] eq "\tdh_auto_clean"
and ( $i + 2 > $#$lines or $lines->[ $i + 2 ] !~ /^\t/ ) )
{
splice @$lines, $i, 2;
# At this point there may be an extra empty line left.
# Remove an empty line after the removed target
# Or any trailing empty line (if the target was at EOF)
if ( $i > $#$lines ) {
$#$lines-- if $lines->[-1] eq ''; # trim trailing empty line
}
elsif ( $lines->[$i] eq '' ) {
splice( @$lines, $i, 1 );
}
last;
}
}
# similarly to the $(QUILT_STAMPFN) stripping, here we process a general
# ependency on the 'unpatch' rule
for ( my $i = 1; $i < @$lines; $i++ ) {
$lines->[$i] =~ s{
^ # at the beginning of the line
([^\s:]+): # target name, followed by a colon
(.*) # any other dependencies
unpatch # followed by 'unpatch'
}{$1:$2}x;
}
# drop --with=quilt from dh command line
for (@$lines) {
while ( /dh (.*)--with[= ]quilt(.*)\n/ ) {
my ( $before, $after ) = ( $1, $2 );
$after =~ s/\s+$//; # remove trailing spaces
$after =~ s/^\s+// if $before =~ /\s$/; # collapse adjascent spaces
$before =~ s/\s+$// if $after eq ''; # more trailing spaces
$after =~ s/^\s+// if $before eq ''; # extra leading space
s/dh (.*)--with[= ]quilt(.*)\n/dh $before$after\n/;
}
}
}
=item read [I<file name>]
Replaces the current rules content with the content of I<filename>. If
I<filename> is not given, uses the value of the L</filename> member.
=cut
sub read {
my $self = shift;
my $filename = shift // $self->filename;
defined($filename) or die "No filename given to read() nor new()";
@{ $self->lines } = ();
$self->_parsed(0);
return unless -e $filename;
my $fh;
open( $fh, '<', $filename ) or die "open($filename): $!";
while( defined( $_ = <$fh> ) ) {
push @{ $self->lines }, $_;
}
close $fh;
}
=item write [I<filename>]
Writes the in-memory contents I<filename>. If not given, uses the value of the
L</filename> member.
If L</lines> points to an empty array, the file is removed.
=cut
sub write {
my $self = shift;
my $filename = shift // $self->filename;
defined($filename) or die "No filename given to write() nor new()";
if ( @{ $self->lines } ) {
open my $fh, '>', $filename
or die "Error opening '$filename': $!";
print $fh $_ for @{ $self->lines };
close $fh;
}
else {
unlink $filename or die "unlink($filename): $!";
}
}
sub DESTROY {
my $self = shift;
$self->write if $self->filename;
bless $self, 'Class::Accessor'; # chain destruction
}
=back
=head1 COPYRIGHT & LICENSE
=over
=item Copyright (C) 2009, 2010 Damyan Ivanov <dmn@debian.org>
=back
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. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
Street, Fifth Floor, Boston, MA 02110-1301 USA.
=cut
1;
|