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# Copyright © 2008-2009 Raphaël Hertzog <hertzog@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 <https://www.gnu.org/licenses/>.
package Dpkg::Vendor;
use strict;
use warnings;
our $VERSION = '1.01';
use Dpkg ();
use Dpkg::ErrorHandling;
use Dpkg::Gettext;
use Dpkg::BuildEnv;
use Dpkg::Control::HashCore;
use Exporter qw(import);
our @EXPORT_OK = qw(get_vendor_info get_current_vendor get_vendor_file
get_vendor_dir get_vendor_object run_vendor_hook);
my $origins = "$Dpkg::CONFDIR/origins";
$origins = $ENV{DPKG_ORIGINS_DIR} if $ENV{DPKG_ORIGINS_DIR};
=encoding utf8
=head1 NAME
Dpkg::Vendor - get access to some vendor specific information
=head1 DESCRIPTION
The files in $Dpkg::CONFDIR/origins/ can provide information about various
vendors who are providing Debian packages. Currently those files look like
this:
Vendor: Debian
Vendor-URL: http://www.debian.org/
Bugs: debbugs://bugs.debian.org
If the vendor derives from another vendor, the file should document
the relationship by listing the base distribution in the Parent field:
Parent: Debian
The file should be named according to the vendor name.
=head1 FUNCTIONS
=over 4
=item $dir = Dpkg::Vendor::get_vendor_dir()
Returns the current dpkg origins directory name, where the vendor files
are stored.
=cut
sub get_vendor_dir {
return $origins;
}
=item $fields = Dpkg::Vendor::get_vendor_info($name)
Returns a Dpkg::Control object with the information parsed from the
corresponding vendor file in $Dpkg::CONFDIR/origins/. If $name is omitted,
it will use $Dpkg::CONFDIR/origins/default which is supposed to be a symlink
to the vendor of the currently installed operating system. Returns undef
if there's no file for the given vendor.
=cut
sub get_vendor_info(;$) {
my $vendor = shift || 'default';
my $file = get_vendor_file($vendor);
return unless $file;
my $fields = Dpkg::Control::HashCore->new();
$fields->load($file) or error(_g('%s is empty'), $file);
return $fields;
}
=item $name = Dpkg::Vendor::get_vendor_file($name)
Check if there's a file for the given vendor and returns its
name.
=cut
sub get_vendor_file(;$) {
my $vendor = shift || 'default';
my $file;
my @tries = ($vendor, lc($vendor), ucfirst($vendor), ucfirst(lc($vendor)));
if ($vendor =~ s/\s+/-/) {
push @tries, $vendor, lc($vendor), ucfirst($vendor), ucfirst(lc($vendor));
}
foreach my $name (@tries) {
$file = "$origins/$name" if -e "$origins/$name";
}
return $file;
}
=item $name = Dpkg::Vendor::get_current_vendor()
Returns the name of the current vendor. If DEB_VENDOR is set, it uses
that first, otherwise it falls back to parsing $Dpkg::CONFDIR/origins/default.
If that file doesn't exist, it returns undef.
=cut
sub get_current_vendor() {
my $f;
if (Dpkg::BuildEnv::has('DEB_VENDOR')) {
$f = get_vendor_info(Dpkg::BuildEnv::get('DEB_VENDOR'));
return $f->{'Vendor'} if defined $f;
}
$f = get_vendor_info();
return $f->{'Vendor'} if defined $f;
return;
}
=item $object = Dpkg::Vendor::get_vendor_object($name)
Return the Dpkg::Vendor::* object of the corresponding vendor.
If $name is omitted, return the object of the current vendor.
If no vendor can be identified, then return the Dpkg::Vendor::Default
object.
=cut
my %OBJECT_CACHE;
sub get_vendor_object {
my $vendor = shift || get_current_vendor() || 'Default';
return $OBJECT_CACHE{$vendor} if exists $OBJECT_CACHE{$vendor};
my ($obj, @names);
if ($vendor ne 'Default') {
push @names, $vendor, lc($vendor), ucfirst($vendor), ucfirst(lc($vendor));
}
foreach my $name (@names, 'Default') {
eval qq{
require Dpkg::Vendor::$name;
\$obj = Dpkg::Vendor::$name->new();
};
last unless $@;
}
$OBJECT_CACHE{$vendor} = $obj;
return $obj;
}
=item Dpkg::Vendor::run_vendor_hook($hookid, @params)
Run a hook implemented by the current vendor object.
=cut
sub run_vendor_hook {
my $vendor_obj = get_vendor_object();
$vendor_obj->run_hook(@_);
}
=back
=head1 CHANGES
=head2 Version 1.01
New function: get_vendor_dir().
=cut
1;