1 files changed, 84 insertions, 0 deletions
diff --git a/lib/Lintian/Check/Fields/Style.pm b/lib/Lintian/Check/Fields/Style.pm
new file mode 100644
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+++ b/lib/Lintian/Check/Fields/Style.pm
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+# fields/style -- lintian check script -*- perl -*-
+#
+# Copyright (C) 2020-2021 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::Fields::Style;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+# the fields in d/control provide the values for many fields elsewhere
+sub source {
+    my ($self) = @_;
+
+    my $debian_control = $self->processable->debian_control;
+    my $control_item = $debian_control->item;
+
+    # look at d/control source paragraph
+    my $source_fields = $debian_control->source_fields;
+
+    $self->check_style($source_fields, $control_item);
+
+    for my $installable ($debian_control->installables) {
+
+        # look at d/control installable paragraphs
+        my $installable_fields
+          = $debian_control->installable_fields($installable);
+
+        $self->check_style($installable_fields, $control_item);
+    }
+
+    return;
+}
+
+sub check_style {
+    my ($self, $fields, $item) = @_;
+
+    for my $name ($fields->names) {
+
+        # title-case the field name
+        my $standard = lc $name;
+        $standard =~ s/\b(\w)/\U$1/g;
+
+        # capitalize up to three letters after an X, if followed by hyphen
+        $standard =~ s/^(X[SBC]{1,3})-/\U$1-/i;
+
+        my $position = $fields->position($name);
+        my $pointer = $item->pointer($position);
+
+        $self->pointed_hint('cute-field', $pointer, "$name vs $standard")
+          unless $name eq $standard;
+    }
+
+    return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et