Revert of Linux build: Use sysroot when calculating dependencies

third_party/dpkg-dev/scripts/Dpkg/Source/Archive.pm

-# Copyright © 2008 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::Source::Archive;
-
-use strict;
-use warnings;
-
-our $VERSION = '0.01';
-
-use Dpkg::Source::Functions qw(erasedir fixperms);
-use Dpkg::Gettext;
-use Dpkg::IPC;
-use Dpkg::ErrorHandling;
-
-use Carp;
-use File::Temp qw(tempdir);
-use File::Basename qw(basename);
-use File::Spec;
-use Cwd;
-
-use parent qw(Dpkg::Compression::FileHandle);
-
-sub create {
-    my ($self, %opts) = @_;
-    $opts{options} ||= [];
-    my %spawn_opts;
-    # Possibly run tar from another directory
-    if ($opts{chdir}) {
-        $spawn_opts{chdir} = $opts{chdir};
-        *$self->{chdir} = $opts{chdir};
-    }
-    # Redirect input/output appropriately
-    $self->ensure_open('w');
-    $spawn_opts{to_handle} = $self->get_filehandle();
-    $spawn_opts{from_pipe} = \*$self->{tar_input};
-    # Call tar creation process
-    $spawn_opts{delete_env} = [ 'TAR_OPTIONS' ];
-    $spawn_opts{exec} = [ 'tar', '--null', '-T', '-', '--numeric-owner',
-                            '--owner', '0', '--group', '0',
-                            @{$opts{options}}, '-cf', '-' ];
-    *$self->{pid} = spawn(%spawn_opts);
-    *$self->{cwd} = getcwd();
-}
-
-sub _add_entry {
-    my ($self, $file) = @_;
-    my $cwd = *$self->{cwd};
-    croak 'call create() first' unless *$self->{tar_input};
-    $file = $2 if ($file =~ /^\Q$cwd\E\/(.+)$/); # Relative names
-    print({ *$self->{tar_input} } "$file\0")
-        or syserr(_g('write on tar input'));
-}
-
-sub add_file {
-    my ($self, $file) = @_;
-    my $testfile = $file;
-    if (*$self->{chdir}) {
-        $testfile = File::Spec->catfile(*$self->{chdir}, $file);
-    }
-    croak 'add_file() does not handle directories'
-        if not -l $testfile and -d _;
-    $self->_add_entry($file);
-}
-
-sub add_directory {
-    my ($self, $file) = @_;
-    my $testfile = $file;
-    if (*$self->{chdir}) {
-        $testfile = File::Spec->catdir(*$self->{chdir}, $file);
-    }
-    croak 'add_directory() only handles directories'
-        if -l $testfile or not -d _;
-    $self->_add_entry($file);
-}
-
-sub finish {
-    my ($self) = @_;
-    close(*$self->{tar_input}) or syserr(_g('close on tar input'));
-    wait_child(*$self->{pid}, cmdline => 'tar -cf -');
-    delete *$self->{pid};
-    delete *$self->{tar_input};
-    delete *$self->{cwd};
-    delete *$self->{chdir};
-    $self->close();
-}
-
-sub extract {
-    my ($self, $dest, %opts) = @_;
-    $opts{options} ||= [];
-    $opts{in_place} ||= 0;
-    $opts{no_fixperms} ||= 0;
-    my %spawn_opts = (wait_child => 1);
-
-    # Prepare destination
-    my $tmp;
-    if ($opts{in_place}) {
-        $spawn_opts{chdir} = $dest;
-        $tmp = $dest; # So that fixperms call works
-    } else {
-        my $template = basename($self->get_filename()) .  '.tmp-extract.XXXXX';
-        unless (-e $dest) {
-            # Kludge so that realpath works
-            mkdir($dest) or syserr(_g('cannot create directory %s'), $dest);
-        }
-        $tmp = tempdir($template, DIR => Cwd::realpath("$dest/.."), CLEANUP => 1);
-        $spawn_opts{chdir} = $tmp;
-    }
-
-    # Prepare stuff that handles the input of tar
-    $self->ensure_open('r');
-    $spawn_opts{from_handle} = $self->get_filehandle();
-
-    # Call tar extraction process
-    $spawn_opts{delete_env} = [ 'TAR_OPTIONS' ];
-    $spawn_opts{exec} = [ 'tar', '--no-same-owner', '--no-same-permissions',
-                            @{$opts{options}}, '-xf', '-' ];
-    spawn(%spawn_opts);
-    $self->close();
-
-    # Fix permissions on extracted files because tar insists on applying
-    # our umask _to the original permissions_ rather than mostly-ignoring
-    # the original permissions.
-    # We still need --no-same-permissions because otherwise tar might
-    # extract directory setgid (which we want inherited, not
-    # extracted); we need --no-same-owner because putting the owner
-    # back is tedious - in particular, correct group ownership would
-    # have to be calculated using mount options and other madness.
-    fixperms($tmp) unless $opts{no_fixperms};
-
-    # Stop here if we extracted in-place as there's nothing to move around
-    return if $opts{in_place};
-
-    # Rename extracted directory
-    opendir(my $dir_dh, $tmp) or syserr(_g('cannot opendir %s'), $tmp);
-    my @entries = grep { $_ ne '.' && $_ ne '..' } readdir($dir_dh);
-    closedir($dir_dh);
-    my $done = 0;
-    erasedir($dest);
-    if (scalar(@entries) == 1 && ! -l "$tmp/$entries[0]" && -d _) {
-        rename("$tmp/$entries[0]", $dest)
-            or syserr(_g('unable to rename %s to %s'),
-                      "$tmp/$entries[0]", $dest);
-    } else {
-        rename($tmp, $dest)
-            or syserr(_g('unable to rename %s to %s'), $tmp, $dest);
-    }
-    erasedir($tmp);
-}
-
-1;