The following commit has been merged in the master branch:
commit 7543ba71a0d1519eb2bd4512e02fa2e2373802ea
Author: Christoph Berg <[email protected]>
Date: Sat Aug 11 17:10:07 2012 +0200
new script origtargz.pl
origtargz downloads the orig tarball of a Debian package, and optionally
unpacks it into the current directory. The version number to be used is
determined from debian/changelog. The main use for origtargz is with
debian-dir-only repository checkouts. It should be invoked from the top
level directory of an unpacked Debian source package.
diff --git a/scripts/origtargz.pl b/scripts/origtargz.pl
new file mode 100755
index 0000000..ae1d2a1
--- /dev/null
+++ b/scripts/origtargz.pl
@@ -0,0 +1,283 @@
+#!/usr/bin/perl
+#
+# origtargz: fetch the orig tarball of a Debian package from various sources,
+# and unpack it
+# Copyright (C) 2012 Christoph Berg <[email protected]>
+#
+# 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/>.
+
+=head1 NAME
+
+origtargz - fetch the orig tarball of a Debian package from various sources,
and unpack it
+
+=head1 SYNOPSIS
+
+=over
+
+=item B<origtargz> [B<--unpack>[=B<no>|B<once>|B<yes>]]
+
+=item B<origtargz> B<--help>
+
+=back
+
+=head1 DESCRIPTION
+
+B<origtargz> downloads the orig tarball of a Debian package, and optionally
+unpacks it into the current directory. The version number to be used is
+determined from B<debian/changelog>. The main use for B<origtargz> is with
+debian-dir-only repository checkouts. It should be invoked from the top level
+directory of an unpacked Debian source package.
+
+Various download locations are tried. First, an existing file is looked for.
+Then, B<apt-get source> is tried when B<apt-cache showsrc> reports a matching
+version. Finally, B<uscan --download-current-version> is tried.
+
+When asked to unpack the orig tarball, B<origtargz> will remove all files and
+directories from the current directory, except the debian directory, and the
+VCS repository directories. Some files outside debian/ which are often stored
+in VCS even for debian-dir-only repositories are also preserved (.bzr-builddeb,
+.gitignore, .hgignore).
+
+The default behavior is to unpack the orig tarball on the first invocation of
+B<origtargz> in a debian-dir-only checkout.
+
+=head1 OPTIONS
+
+=over
+
+=item B<-u>, B<--unpack>[=B<no>|B<once>|B<yes>]
+
+Unpack the downloaded orig tarball to the current directory, replacing
+everything except the debian directory. Valid choices are:
+
+=over
+
+=item B<no>
+
+Do not unpack the orig tarball.
+
+=item B<once> (default when --unpack is not used)
+
+If the current directory contains only a debian directory (and possibly some
+dotfiles), unpack the orig tarball. This is the default behavior.
+
+=item B<yes> (default for --unpack without argument)
+
+Always unpack the orig tarball. Existing files are removed, except for debian/
+and VCS files. Preserved are: B<.bzr .bzrignore .bzr-builddeb .git .gitignore
+.hg .hgignore .svn>.
+
+=back
+
+=back
+
+=cut
+
+#=head1 CONFIGURATION VARIABLES
+#
+#The two configuration files F</etc/devscripts.conf> and
+#F<~/.devscripts> are sourced by a shell in that order to set
+#configuration variables. Command line options can be used to override
+#configuration file settings. Environment variable settings are ignored
+#for this purpose. The currently recognised variables are:
+
+=head1 SEE ALSO
+
+B<debcheckout>(1).
+
+=head1 AUTHOR
+
+B<origtargz> and this manpage have been written by Christoph Berg
+<I<[email protected]>>.
+
+=cut
+
+# option parsing
+
+use strict;
+use warnings;
+use File::Temp qw/tempdir/;
+use Getopt::Long qw(:config gnu_getopt);
+use Pod::Usage;
+
+my $unpack = 'once'; # default when --unpack is not used
+
+GetOptions(
+ "help|h" => sub { pod2usage({-exitval => 0, -verbose => 1}); },
+ "unpack|u:s" => \$unpack,
+) or pod2usage({-exitval => 3});
+
+$unpack = 'yes' if (defined $unpack and $unpack eq ''); # default for --unpack
without argument
+pod2usage({-exitval => 3}) if (@ARGV > 0 or $unpack !~ /^(no|once|yes)$/);
+
+# get package name and version number
+
+my ($package, $version, $origversion, $fileversion);
+
+open F, "debian/changelog" or die "debian/changelog: $!\n";
+my $line = <F>;
+close F;
+unless ($line =~ /^(\S+) \((\S+)\)/) {
+ die "could not parse debian/changelog:1: $line";
+}
+($package, $version) = ($1, $2);
+die "Version $version contains no dash, unable to download orig.tar.* file for
native packages\n"
+ unless ($version =~ /-/);
+$origversion = $version;
+$origversion =~ s/(.*)-.*/$1/; # strip everything from the last dash
+$fileversion = $origversion;
+$fileversion =~ s/^\d+://; # strip epoch
+
+sub download_origtar ()
+{
+ # look for an existing file
+
+ if (my @f = glob "../${package}_$fileversion.orig.tar.*") {
+ print "Using existing $f[0]\n";
+ return $f[0];
+ }
+
+ # TODO: try other well-known file locations (../upstream/ ?) and move
file in place
+
+ # TODO: try pristine-tar
+
+ # try apt-get source
+
+ open S, "apt-cache showsrc '$package' |";
+ my @showsrc;
+ {
+ local $/;
+ @showsrc = <S>;
+ }
+ close S;
+
+ my $bestsrcversion;
+ foreach my $src (@showsrc) {
+ $src =~ /^Package: (.*)/m or next;
+ next if ($1 ne $package); ; # should never trigger, but who
knows
+ $src =~ /^Version: (.*)/m or next;
+ my $srcversion = $1;
+ my $srcorigversion = $srcversion;
+ $srcorigversion =~ s/(.*)-.*/$1/; # strip everything from the
last dash
+ print "Looking at $package $srcversion, interpreted as
$srcorigversion\n";
+
+ if ($srcorigversion eq $origversion) { # loop through all
matching versions
+ $bestsrcversion = $srcversion;
+ last if ($srcversion eq $version); # break if exact
match
+ }
+ }
+
+ if ($bestsrcversion) {
+ print "Trying apt-get source $package=$bestsrcversion ...\n";
+ system "cd .. && apt-get source --only-source --download-only
'$package=$bestsrcversion'";
+ }
+
+ if (my @f = glob "../${package}_$fileversion.orig.tar.*") {
+ return $f[0];
+ }
+
+ # try uscan
+
+ if (-f "debian/watch") {
+ print "Trying uscan --download-current-version ...\n";
+ system "uscan --download-current-version\n";
+ }
+
+ if (my @f = glob "../${package}_$fileversion.orig.tar.*") {
+ return $f[0];
+ }
+
+ print "Could not find any location for
${package}_$fileversion.orig.tar.*\n";
+ return undef;
+}
+
+sub clean_checkout ()
+{
+ # delete all files except debian/, our VCS checkout, and some files
+ # often in VCS outside debian/ even in debian-dir-only repositories
+ opendir DIR, '.' or die "opendir: $!";
+ my @rm;
+ while (my $file = readdir DIR) {
+ next if ($file eq '.' or $file eq '..');
+ next if ($file eq 'debian');
+ next if ($file =~ /^(\.bzr|\.git|\.hg|\.svn|CVS)$/);
+ if ($file =~
/^(\.bzr(ignore|-builddeb)|\.gitignore|\.hgignore)$/) {
+ print "Notice: not deleting $file (likely to come from
VCS checkout)\n";
+ next;
+ }
+ push @rm, $file;
+ }
+ close DIR;
+ system ('rm', '-rf', @rm);
+}
+
+sub unpack_tarball ($)
+{
+ my $origtar = shift;
+ my $tmpdir = File::Temp->newdir(DIR => ".", CLEANUP => 1);
+
+ print "Unpacking $origtar\n";
+
+ # unpack
+ chdir $tmpdir or die "chdir $tmpdir: $!";
+ system ('tar', 'xf', "../$origtar");
+ if ($? >> 8) {
+ print STDERR "tar xf $origtar failed\n";
+ return 0;
+ }
+ chdir '..';
+
+ # figure out which directory was created
+ my @dirs = glob "$tmpdir/*/";
+ unless (@dirs) {
+ print STDERR "tar xf $origtar did not create any directory\n";
+ return 0;
+ }
+ my $directory = $dirs[0];
+ chop $directory;
+
+ # move all files over, except the debian directory
+ opendir DIR, $directory or die "opendir $directory: $!";
+ foreach my $file (readdir DIR) {
+ if ($file eq 'debian') {
+ system ('rm', '-rf', "$directory/$file");
+ next;
+ } elsif ($file eq '.' or $file eq '..') {
+ next;
+ }
+ unless (rename "$directory/$file", "$file") {
+ print STDERR "rename $directory/$file $file: $!\n";
+ return 0;
+ }
+ }
+ closedir DIR;
+ rmdir $directory;
+
+ return 1;
+}
+
+my $origtar = download_origtar;
+exit 1 unless ($origtar);
+
+if ($unpack eq 'once') {
+ my @files = glob '*'; # ignores dotfiles
+ if (@files == 1) { # this is debian/, we have already opened
debian/changelog
+ unpack_tarball ($origtar) or exit 1;
+ }
+} elsif ($unpack eq 'yes') {
+ clean_checkout;
+ unpack_tarball ($origtar) or exit 1;
+}
+
+exit 0;
--
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