diff options
Diffstat (limited to 'lib/Lintian/Check/Languages/Ocaml/ByteCode/Misplaced/Path.pm')
-rw-r--r-- | lib/Lintian/Check/Languages/Ocaml/ByteCode/Misplaced/Path.pm | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/lib/Lintian/Check/Languages/Ocaml/ByteCode/Misplaced/Path.pm b/lib/Lintian/Check/Languages/Ocaml/ByteCode/Misplaced/Path.pm new file mode 100644 index 0000000..68e4f4f --- /dev/null +++ b/lib/Lintian/Check/Languages/Ocaml/ByteCode/Misplaced/Path.pm @@ -0,0 +1,105 @@ +# languages/ocaml/byte-code/misplaced/path -- lintian check script -*- perl -*- +# +# Copyright (C) 2009 Stephane Glondu +# Copyright (C) 2021 Felix Lechner +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# 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, you can find it on the World Wide +# Web at https://www.gnu.org/copyleft/gpl.html, or write to the Free +# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, +# MA 02110-1301, USA. + +package Lintian::Check::Languages::Ocaml::ByteCode::Misplaced::Path; + +use v5.20; +use warnings; +use utf8; + +use Const::Fast; +use List::SomeUtils qw(first_value); + +use Moo; +use namespace::clean; + +with 'Lintian::Check'; + +const my $EMPTY => q{}; +const my $SLASH => q{/}; + +has misplaced_files => (is => 'rw', default => sub { [] }); + +sub visit_installed_files { + my ($self, $item) = @_; + + # development files outside /usr/lib/ocaml (.cmi, .cmx, .cmxa) + return + if $item->name =~ m{^ usr/lib/ocaml/ }x; + + # .cma, .cmo and .cmxs are excluded because they can be plugins + push(@{$self->misplaced_files}, $item->name) + if $item->name =~ m{ [.] cm (?: i | xa? ) $}x; + + return; +} + +sub installable { + my ($self) = @_; + + my $count = scalar @{$self->misplaced_files}; + my $plural = ($count == 1) ? $EMPTY : 's'; + + my $prefix = longest_common_prefix(@{$self->misplaced_files}); + + # strip trailing slash + $prefix =~ s{ / $}{}x + unless $prefix eq $SLASH; + + $self->hint( + 'ocaml-dev-file-not-in-usr-lib-ocaml', + "$count file$plural in $prefix" + )if $count > 0; + + return; +} + +sub longest_common_prefix { + my (@paths) = @_; + + my %prefixes; + + for my $path (@paths) { + + my $truncated = $path; + + # first operation drops the file name + while ($truncated =~ s{ / [^/]* $}{}x) { + ++$prefixes{$truncated}; + } + } + + my @by_descending_length = reverse sort keys %prefixes; + + my $common = first_value { $prefixes{$_} == @paths } @by_descending_length; + + $common ||= $SLASH; + + return $common; +} + +1; + +# Local Variables: +# indent-tabs-mode: nil +# cperl-indent-level: 4 +# End: +# vim: syntax=perl sw=4 sts=4 sr et |