2 files changed, 306 insertions, 0 deletions
diff --git a/lib/Test/Lintian/Output/EWI.pm b/lib/Test/Lintian/Output/EWI.pm
new file mode 100644
index 0000000..74fab49
--- /dev/null
+++ b/lib/Test/Lintian/Output/EWI.pm
@@ -0,0 +1,117 @@
+# Copyright (C) 2019 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 Test::Lintian::Output::EWI;
+
+=head1 NAME
+
+Test::Lintian::Output::EWI -- routines to process EWI hints
+
+=head1 SYNOPSIS
+
+  use Path::Tiny;
+  use Test::Lintian::Output::EWI qw(to_universal);
+
+  my $ewi = path("path to an EWI hint file")->slurp_utf8;
+  my $universal = to_universal($ewi);
+
+=head1 DESCRIPTION
+
+Helper routines to deal with C<EWI> hints and hint files
+
+=cut
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Exporter qw(import);
+
+BEGIN {
+    our @EXPORT_OK = qw(
+      to_universal
+    );
+}
+
+use Carp;
+use Const::Fast;
+use List::Util qw(all);
+use Unicode::UTF8 qw(encode_utf8);
+
+use Test::Lintian::Output::Universal qw(universal_string order);
+
+const my $EMPTY   => q{};
+const my $NEWLINE => qq{\n};
+
+=head1 FUNCTIONS
+
+=over 4
+
+=item to_universal(STRING)
+
+Converts the C<EWI> hint data contained in STRING to universal hints.
+They are likewise delivered in a multi-line string.
+
+=cut
+
+sub to_universal {
+    my ($ewi) = @_;
+
+    my @unsorted;
+
+    my @lines = split($NEWLINE, $ewi);
+    chomp @lines;
+
+    foreach my $line (@lines) {
+
+        # no hint in this line
+        next if $line =~ /^N: /;
+
+        # look for "EWI: package[ type]: name details"
+        my ($code, $package, $type, $name, $details)
+          = $line=~ /^(.): (\S+)(?: (changes|source|udeb))?: (\S+)(?: (.*))?$/;
+
+        # for binary packages, the type field is empty
+        $type //= 'binary';
+
+        croak encode_utf8("Cannot parse line $line")
+          unless all { length } ($code, $package, $type, $name);
+
+        my $converted = universal_string($package, $type, $name, $details);
+        push(@unsorted, $converted);
+    }
+
+    my @sorted = reverse sort { order($a) cmp order($b) } @unsorted;
+
+    my $universal = $EMPTY;
+    $universal .= $_ . $NEWLINE for @sorted;
+
+    return $universal;
+}
+
+=back
+
+=cut
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et
diff --git a/lib/Test/Lintian/Output/Universal.pm b/lib/Test/Lintian/Output/Universal.pm
new file mode 100644
index 0000000..707b958
--- /dev/null
+++ b/lib/Test/Lintian/Output/Universal.pm
@@ -0,0 +1,189 @@
+# Copyright (C) 2019 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 Test::Lintian::Output::Universal;
+
+=head1 NAME
+
+Test::Lintian::Output::Universal -- routines to process universal hints
+
+=head1 SYNOPSIS
+
+  use Test::Lintian::Output::Universal qw(get_tag_names);
+
+  my $filepath = "path to a universal hint file";
+  my @tags = get_tag_names($filepath);
+
+=head1 DESCRIPTION
+
+Helper routines to deal with universal hints and hint files. This is an
+abstract format that has the minimum information found in all Lintian
+output formats.
+
+=cut
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Exporter qw(import);
+
+BEGIN {
+    our @EXPORT_OK = qw(
+      get_tag_names
+      order
+      package_name
+      package_type
+      tag_name
+      parse_line
+      universal_string
+    );
+}
+
+use Carp;
+use Const::Fast;
+use List::SomeUtils qw(uniq);
+use List::Util qw(all);
+use Path::Tiny;
+use Unicode::UTF8 qw(encode_utf8);
+
+const my $SPACE => q{ };
+const my $COLON => q{:};
+const my $LPARENS => q{(};
+const my $RPARENS => q{)};
+
+=head1 FUNCTIONS
+
+=over 4
+
+=item get_tag_names(PATH)
+
+Gets all the tag names mentioned in universal hint file located
+at PATH.
+
+=cut
+
+sub get_tag_names {
+    my ($path) = @_;
+
+    my @lines = path($path)->lines_utf8({ chomp => 1 });
+    my @names = map { tag_name($_) } @lines;
+
+    return uniq @names;
+}
+
+=item order
+
+=cut
+
+sub order {
+    my ($line) = @_;
+
+    return package_type($line) . $line;
+}
+
+=item package_name
+
+=cut
+
+sub package_name {
+    my ($line) = @_;
+
+    my ($package, undef, undef, undef) = parse_line($line);
+    return $package;
+}
+
+=item package_type
+
+=cut
+
+sub package_type {
+    my ($line) = @_;
+
+    my (undef, $type, undef, undef) = parse_line($line);
+    return $type;
+}
+
+=item tag_name
+
+=cut
+
+sub tag_name {
+    my ($line) = @_;
+
+    my (undef, undef, $name, undef) = parse_line($line);
+    return $name;
+}
+
+=item parse_line
+
+=cut
+
+sub parse_line {
+    my ($line) = @_;
+
+    my ($package, $type, $name, $details)
+      = $line =~ qr/^(\S+)\s+\(([^)]+)\):\s+(\S+)(?:\s+(.*))?$/;
+
+    croak encode_utf8("Cannot parse line $line")
+      unless all { length } ($package, $type, $name);
+
+    return ($package, $type, $name, $details);
+}
+
+=item universal_string
+
+=cut
+
+sub universal_string {
+    my ($package, $type, $name, $details) = @_;
+
+    croak encode_utf8('Need a package name')
+      unless length $package;
+    croak encode_utf8('Need a package type')
+      unless length $type;
+    croak encode_utf8('Need a tag name')
+      unless length $name;
+
+    my $line
+      = $package. $SPACE. $LPARENS. $type. $RPARENS. $COLON. $SPACE. $name;
+    $line .= $SPACE . $details
+      if length $details;
+
+    return $line;
+}
+
+=back
+
+=head1 AUTHOR
+
+Originally written by Felix Lechner <felix.lechner@lease-up.com> for Lintian.
+
+=head1 SEE ALSO
+
+lintian(1)
+
+=cut
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et