Dpkg::Package: Add new perl module

This includes a public function to validate package names.

scripts/Dpkg/Package.pm

@@ -0,0 +1,42 @@
+# Copyright © 2006 Frank Lichtenheld <djpig@debian.org>
+# Copyright © 2007,2012 Guillem Jover <guillem@debian.org>
+#
+# 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, see <http://www.gnu.org/licenses/>.
+
+package Dpkg::Package;
+
+use strict;
+use warnings;
+
+our $VERSION = "0.01";
+
+use Dpkg::Gettext;
+
+use base qw(Exporter);
+our @EXPORT = qw(pkg_name_is_illegal);
+
+sub pkg_name_is_illegal($) {
+    my $name = shift || '';
+
+    $name eq '' &&
+        return _g("may not be empty string");
+    $name =~ m/[^-+.0-9a-z]/o &&
+        return sprintf(_g("character '%s' not allowed"), $&);
+    $name =~ m/^[0-9a-z]/o ||
+        return _g("must start with an alphanumeric character");
+
+    return undef;
+}
+
+1;

scripts/Makefile.am

@@ -80,6 +80,7 @@ nobase_dist_perllib_DATA = \
 	Dpkg/Index.pm \
 	Dpkg/Interface/Storable.pm \
 	Dpkg/IPC.pm \
+	Dpkg/Package.pm \
 	Dpkg/Path.pm \
 	Dpkg/Shlibs.pm \
 	Dpkg/Shlibs/Objdump.pm \
@@ -179,6 +180,7 @@ test_tmpdir = t.tmp
 test_cases = \
 	t/000_pod.t \
 	t/100_Dpkg_Version.t \
+	t/150_Dpkg_Package.t \
 	t/190_Dpkg_Shlibs_Cppfilt.t \
 	t/200_Dpkg_Shlibs.t \
 	t/300_Dpkg_BuildOptions.t \

scripts/po/POTFILES.in

@@ -41,6 +41,7 @@ scripts/Dpkg/Exit.pm
 scripts/Dpkg/Index.pm
 scripts/Dpkg/Interface/Storable.pm
 scripts/Dpkg/IPC.pm
+scripts/Dpkg/Package.pm
 scripts/Dpkg/Path.pm
 scripts/Dpkg/Shlibs.pm
 scripts/Dpkg/Shlibs/Cppfilt.pm

scripts/t/150_Dpkg_Package.t

@@ -0,0 +1,29 @@
+# -*- mode: cperl;-*-
+#
+# 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, see <http://www.gnu.org/licenses/>.
+
+use Test::More tests => 6;
+
+use strict;
+use warnings;
+
+use_ok('Dpkg::Package');
+
+ok(pkg_name_is_illegal(undef));
+ok(pkg_name_is_illegal(""));
+ok(pkg_name_is_illegal("%_&"));
+ok(pkg_name_is_illegal("ABC"));
+ok(pkg_name_is_illegal("-abc"));
+
+1;