Adding upstream version 1.19.8.upstream/1.19.8upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 245 insertions, 0 deletions

diff --git a/scripts/Dpkg/Deps/KnownFacts.pm b/scripts/Dpkg/Deps/KnownFacts.pm
new file mode 100644
index 0000000..192f6aa
--- /dev/null
+++ b/scripts/Dpkg/Deps/KnownFacts.pm
@@ -0,0 +1,245 @@
+# Copyright © 1998 Richard Braakman
+# Copyright © 1999 Darren Benham
+# Copyright © 2000 Sean 'Shaleh' Perry
+# Copyright © 2004 Frank Lichtenheld
+# Copyright © 2006 Russ Allbery
+# Copyright © 2007-2009 Raphaël Hertzog <hertzog@debian.org>
+# Copyright © 2008-2009, 2012-2014 Guillem Jover <guillem@debian.org>
+#
+# This program is free software; you may 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 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::Deps::KnownFacts;
+
+=encoding utf8
+
+=head1 NAME
+
+Dpkg::Deps::KnownFacts - list of installed real and virtual packages
+
+=head1 DESCRIPTION
+
+This object represents a list of installed packages and a list of virtual
+packages provided (by the set of installed packages).
+
+=cut
+
+use strict;
+use warnings;
+
+our $VERSION = '1.01';
+
+use Dpkg::Version;
+
+=head1 METHODS
+
+=over 4
+
+=item $facts = Dpkg::Deps::KnownFacts->new();
+
+Creates a new object.
+
+=cut
+
+sub new {
+    my $this = shift;
+    my $class = ref($this) || $this;
+    my $self = {
+        pkg => {},
+        virtualpkg => {},
+    };
+
+    bless $self, $class;
+    return $self;
+}
+
+=item $facts->add_installed_package($package, $version, $arch, $multiarch)
+
+Records that the given version of the package is installed. If
+$version/$arch is undefined we know that the package is installed but we
+don't know which version/architecture it is. $multiarch is the Multi-Arch
+field of the package. If $multiarch is undef, it will be equivalent to
+"Multi-Arch: no".
+
+Note that $multiarch is only used if $arch is provided.
+
+=cut
+
+sub add_installed_package {
+    my ($self, $pkg, $ver, $arch, $multiarch) = @_;
+    my $p = {
+        package => $pkg,
+        version => $ver,
+        architecture => $arch,
+        multiarch => $multiarch // 'no',
+    };
+
+    $self->{pkg}{"$pkg:$arch"} = $p if defined $arch;
+    push @{$self->{pkg}{$pkg}}, $p;
+}
+
+=item $facts->add_provided_package($virtual, $relation, $version, $by)
+
+Records that the "$by" package provides the $virtual package. $relation
+and $version correspond to the associated relation given in the Provides
+field (if present).
+
+=cut
+
+sub add_provided_package {
+    my ($self, $pkg, $rel, $ver, $by) = @_;
+    my $v = {
+        package => $pkg,
+        relation => $rel,
+        version => $ver,
+        provider => $by,
+    };
+
+    $self->{virtualpkg}{$pkg} //= [];
+    push @{$self->{virtualpkg}{$pkg}}, $v;
+}
+
+=item ($check, $param) = $facts->check_package($package)
+
+$check is one when the package is found. For a real package, $param
+contains the version. For a virtual package, $param contains an array
+reference containing the list of packages that provide it (each package is
+listed as [ $provider, $relation, $version ]).
+
+This function is obsolete and should not be used. Dpkg::Deps::KnownFacts
+is only meant to be filled with data and then passed to Dpkg::Deps
+methods where appropriate, but it should not be directly queried.
+
+=cut
+
+sub check_package {
+    my ($self, $pkg) = @_;
+
+    warnings::warnif('deprecated', 'obsolete function, pass ' .
+                     'Dpkg::Deps::KnownFacts to Dpkg::Deps methods instead');
+
+    if (exists $self->{pkg}{$pkg}) {
+        return (1, $self->{pkg}{$pkg}[0]{version});
+    }
+    if (exists $self->{virtualpkg}{$pkg}) {
+        my $arrayref = [ map { [
+            $_->{provider}, $_->{relation}, $_->{version}
+        ] } @{$self->{virtualpkg}{$pkg}} ];
+        return (1, $arrayref);
+    }
+    return (0, undef);
+}
+
+##
+## The functions below are private to Dpkg::Deps::KnownFacts.
+##
+
+sub _find_package {
+    my ($self, $dep, $lackinfos) = @_;
+    my ($pkg, $archqual) = ($dep->{package}, $dep->{archqual});
+
+    return if not exists $self->{pkg}{$pkg};
+
+    my $host_arch = $dep->{host_arch} // Dpkg::Arch::get_host_arch();
+    my $build_arch = $dep->{build_arch} // Dpkg::Arch::get_build_arch();
+
+    foreach my $p (@{$self->{pkg}{$pkg}}) {
+        my $a = $p->{architecture};
+        my $ma = $p->{multiarch};
+
+        if (not defined $a) {
+            $$lackinfos = 1;
+            next;
+        }
+        if (not defined $archqual) {
+            return $p if $ma eq 'foreign';
+            return $p if $a eq $host_arch or $a eq 'all';
+        } elsif ($archqual eq 'any') {
+            return $p if $ma eq 'allowed';
+        } elsif ($archqual eq 'native') {
+            return if $ma eq 'foreign';
+            return $p if $a eq $build_arch or $a eq 'all';
+        } else {
+            return $p if $a eq $archqual;
+        }
+    }
+    return;
+}
+
+sub _find_virtual_packages {
+    my ($self, $pkg) = @_;
+
+    return () if not exists $self->{virtualpkg}{$pkg};
+    return @{$self->{virtualpkg}{$pkg}};
+}
+
+=item $facts->evaluate_simple_dep()
+
+This method is private and should not be used except from within Dpkg::Deps.
+
+=cut
+
+sub evaluate_simple_dep {
+    my ($self, $dep) = @_;
+    my ($lackinfos, $pkg) = (0, $dep->{package});
+
+    my $p = $self->_find_package($dep, \$lackinfos);
+    if ($p) {
+        if (defined $dep->{relation}) {
+            if (defined $p->{version}) {
+                return 1 if version_compare_relation($p->{version},
+                                                     $dep->{relation},
+                                                     $dep->{version});
+            } else {
+                $lackinfos = 1;
+            }
+        } else {
+            return 1;
+        }
+    }
+    foreach my $virtpkg ($self->_find_virtual_packages($pkg)) {
+        next if defined $virtpkg->{relation} and
+                $virtpkg->{relation} ne REL_EQ;
+
+        if (defined $dep->{relation}) {
+            next if not defined $virtpkg->{version};
+            return 1 if version_compare_relation($virtpkg->{version},
+                                                 $dep->{relation},
+                                                 $dep->{version});
+        } else {
+            return 1;
+        }
+    }
+    return if $lackinfos;
+    return 0;
+}
+
+=back
+
+=head1 CHANGES
+
+=head2 Version 1.01 (dpkg 1.16.1)
+
+New option: Dpkg::Deps::KnownFacts->add_installed_package() now accepts 2
+supplementary parameters ($arch and $multiarch).
+
+Deprecated method: Dpkg::Deps::KnownFacts->check_package() is obsolete,
+it should not have been part of the public API.
+
+=head2 Version 1.00 (dpkg 1.15.6)
+
+Mark the module as public.
+
+=cut
+
+1;