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diff --git a/scripts/Dpkg/Vendor/Default.pm b/scripts/Dpkg/Vendor/Default.pm
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+# Copyright © 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::Default;
+
+use strict;
+use warnings;
+
+our $VERSION = '0.01';
+
+# If you use this file as template to create a new vendor class, please
+# uncomment the following lines
+#use parent qw(Dpkg::Vendor::Default);
+
+=encoding utf8
+
+=head1 NAME
+
+Dpkg::Vendor::Default - default vendor class
+
+=head1 DESCRIPTION
+
+A vendor class is used to provide vendor specific behaviour
+in various places. This is the default class used in case
+there's none for the current vendor or in case the vendor could
+not be identified (see Dpkg::Vendor documentation).
+
+It provides some hooks that are called by various dpkg-* tools.
+If you need a new hook, please file a bug against dpkg-dev and explain
+your need. Note that the hook API has no guarantee to be stable over an
+extended period of time. If you run an important distribution that makes
+use of vendor hooks, you'd better submit them for integration so that
+we avoid breaking your code.
+
+=head1 METHODS
+
+=over 4
+
+=item $vendor_obj = Dpkg::Vendor::Default->new()
+
+Creates the default vendor object. Can be inherited by all vendor objects
+if they don't need any specific initialization at object creation time.
+
+=cut
+
+sub new {
+    my $this = shift;
+    my $class = ref($this) || $this;
+    my $self = {};
+    bless $self, $class;
+    return $self;
+}
+
+=item $vendor_obj->run_hook($id, @params)
+
+Run the corresponding hook. The parameters are hook-specific. The
+supported hooks are:
+
+=over 8
+
+=item before-source-build ($srcpkg)
+
+The first parameter is a Dpkg::Source::Package object. The hook is called
+just before the execution of $srcpkg->build().
+
+=item package-keyrings ()
+
+The hook is called when dpkg-source is checking a signature on a source
+package (since dpkg 1.18.11). It takes no parameters, but returns a
+(possibly empty) list of vendor-specific keyrings.
+
+=item archive-keyrings ()
+
+The hook is called when there is a need to check signatures on artifacts
+from repositories, for example by a download method (since dpkg 1.18.11).
+It takes no parameters, but returns a (possibly empty) list of
+vendor-specific keyrings.
+
+=item archive-keyrings-historic ()
+
+The hook is called when there is a need to check signatures on artifacts
+from historic repositories, for example by a download method
+(since dpkg 1.18.11). It takes no parameters, but returns a (possibly empty)
+list of vendor-specific keyrings.
+
+=item builtin-build-depends ()
+
+The hook is called when dpkg-checkbuilddeps is initializing the source
+package build dependencies (since dpkg 1.18.2). It takes no parameters,
+but returns a (possibly empty) list of vendor-specific B<Build-Depends>.
+
+=item builtin-build-conflicts ()
+
+The hook is called when dpkg-checkbuilddeps is initializing the source
+package build conflicts (since dpkg 1.18.2). It takes no parameters,
+but returns a (possibly empty) list of vendor-specific B<Build-Conflicts>.
+
+=item register-custom-fields ()
+
+The hook is called in Dpkg::Control::Fields to register custom fields.
+You should return a list of arrays. Each array is an operation to perform.
+The first item is the name of the operation and corresponds
+to a field_* function provided by Dpkg::Control::Fields. The remaining
+fields are the parameters that are passed unchanged to the corresponding
+function.
+
+Known operations are "register", "insert_after" and "insert_before".
+
+=item post-process-changelog-entry ($fields)
+
+The hook is called in Dpkg::Changelog to post-process a
+Dpkg::Changelog::Entry after it has been created and filled with the
+appropriate values.
+
+=item update-buildflags ($flags)
+
+The hook is called in Dpkg::BuildFlags to allow the vendor to override
+the default values set for the various build flags. $flags is a
+Dpkg::BuildFlags object.
+
+=item builtin-system-build-paths ()
+
+The hook is called by dpkg-genbuildinfo to determine if the current path
+should be recorded in the B<Build-Path> field (since dpkg 1.18.11). It takes
+no parameters, but returns a (possibly empty) list of root paths considered
+acceptable. As an example, if the list contains "/build/", a Build-Path
+field will be created if the current directory is "/build/dpkg-1.18.0". If
+the list contains "/", the path will always be recorded. If the list is
+empty, the current path will never be recorded.
+
+=item build-tainted-by ()
+
+The hook is called by dpkg-genbuildinfo to determine if the current system
+has been tainted in some way that could affect the resulting build, which
+will be recorded in the B<Build-Tainted-By> field (since dpkg 1.19.5). It
+takes no parameters, but returns a (possibly empty) list of tainted reason
+tags (formed by alphanumeric and dash characters).
+
+=item sanitize-environment ()
+
+The hook is called by dpkg-buildpackage to sanitize its build environment
+(since dpkg 1.20.0).
+
+=item backport-version-regex ()
+
+The hook is called by dpkg-genchanges and dpkg-mergechangelog to determine
+the backport version string that should be specially handled as not an earlier
+than version or remapped so that it does not get considered as a pre-release
+(since dpkg 1.21.3).
+The returned string is a regex with one capture group for the backport
+delimiter string, or undef if there is no regex.
+
+=back
+
+=cut
+
+sub run_hook {
+    my ($self, $hook, @params) = @_;
+
+    if ($hook eq 'before-source-build') {
+        my $srcpkg = shift @params;
+    } elsif ($hook eq 'package-keyrings') {
+        return ();
+    } elsif ($hook eq 'archive-keyrings') {
+        return ();
+    } elsif ($hook eq 'archive-keyrings-historic') {
+        return ();
+    } elsif ($hook eq 'register-custom-fields') {
+        return ();
+    } elsif ($hook eq 'builtin-build-depends') {
+        return ();
+    } elsif ($hook eq 'builtin-build-conflicts') {
+        return ();
+    } elsif ($hook eq 'post-process-changelog-entry') {
+        my $fields = shift @params;
+    } elsif ($hook eq 'extend-patch-header') {
+	my ($textref, $ch_info) = @params;
+    } elsif ($hook eq 'update-buildflags') {
+	my $flags = shift @params;
+    } elsif ($hook eq 'builtin-system-build-paths') {
+        return ();
+    } elsif ($hook eq 'build-tainted-by') {
+        return ();
+    } elsif ($hook eq 'sanitize-environment') {
+        return;
+    } elsif ($hook eq 'backport-version-regex') {
+        return;
+    }
+
+    # Default return value for unknown/unimplemented hooks
+    return;
+}
+
+=item $vendor->set_build_features($flags)
+
+Sets the vendor build features, which will then be used to initialize the
+build flags.
+
+=cut
+
+sub set_build_features {
+    my ($self, $flags) = @_;
+
+    return;
+}
+
+=back
+
+=head1 CHANGES
+
+=head2 Version 0.xx
+
+This is a private module.
+
+=cut
+
+1;