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-rw-r--r--scripts/Dpkg/Source/Package/V3/Git.pm257
1 files changed, 257 insertions, 0 deletions
diff --git a/scripts/Dpkg/Source/Package/V3/Git.pm b/scripts/Dpkg/Source/Package/V3/Git.pm
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+++ b/scripts/Dpkg/Source/Package/V3/Git.pm
@@ -0,0 +1,257 @@
+#
+# git support for dpkg-source
+#
+# Copyright © 2007,2010 Joey Hess <joeyh@debian.org>.
+# Copyright © 2008 Frank Lichtenheld <djpig@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::Package::V3::Git;
+
+use strict;
+use warnings;
+
+our $VERSION = '0.02';
+
+use Cwd qw(abs_path getcwd);
+use File::Basename;
+use File::Temp qw(tempdir);
+
+use Dpkg::Gettext;
+use Dpkg::ErrorHandling;
+use Dpkg::Exit qw(push_exit_handler pop_exit_handler);
+use Dpkg::Path qw(find_command);
+use Dpkg::Source::Functions qw(erasedir);
+
+use parent qw(Dpkg::Source::Package);
+
+our $CURRENT_MINOR_VERSION = '0';
+
+# Remove variables from the environment that might cause git to do
+# something unexpected.
+delete $ENV{GIT_DIR};
+delete $ENV{GIT_INDEX_FILE};
+delete $ENV{GIT_OBJECT_DIRECTORY};
+delete $ENV{GIT_ALTERNATE_OBJECT_DIRECTORIES};
+delete $ENV{GIT_WORK_TREE};
+
+sub prerequisites {
+ return 1 if find_command('git');
+ error(g_('cannot unpack git-format source package because ' .
+ 'git is not in the PATH'));
+}
+
+sub _sanity_check {
+ my $srcdir = shift;
+
+ if (! -d "$srcdir/.git") {
+ error(g_('source directory is not the top directory of a git ' .
+ 'repository (%s/.git not present), but Format git was ' .
+ 'specified'), $srcdir);
+ }
+ if (-s "$srcdir/.gitmodules") {
+ error(g_('git repository %s uses submodules; this is not yet supported'),
+ $srcdir);
+ }
+
+ return 1;
+}
+
+my @module_cmdline = (
+ {
+ name => '--git-ref=<ref>',
+ help => N_('specify a git <ref> to include in the git bundle'),
+ when => 'build',
+ }, {
+ name => '--git-depth=<number>',
+ help => N_('create a shallow clone with <number> depth'),
+ when => 'build',
+ }
+);
+
+sub describe_cmdline_options {
+ my $self = shift;
+
+ my @cmdline = ( $self->SUPER::describe_cmdline_options(), @module_cmdline );
+
+ return @cmdline;
+}
+
+sub parse_cmdline_option {
+ my ($self, $opt) = @_;
+ return 1 if $self->SUPER::parse_cmdline_option($opt);
+ if ($opt =~ /^--git-ref=(.*)$/) {
+ push @{$self->{options}{git_ref}}, $1;
+ return 1;
+ } elsif ($opt =~ /^--git-depth=(\d+)$/) {
+ $self->{options}{git_depth} = $1;
+ return 1;
+ }
+ return 0;
+}
+
+sub can_build {
+ my ($self, $dir) = @_;
+
+ return (0, g_("doesn't contain a git repository")) unless -d "$dir/.git";
+ return 1;
+}
+
+sub do_build {
+ my ($self, $dir) = @_;
+ my $diff_ignore_regex = $self->{options}{diff_ignore_regex};
+
+ $dir =~ s{/+$}{}; # Strip trailing /
+ my ($dirname, $updir) = fileparse($dir);
+ my $basenamerev = $self->get_basename(1);
+
+ _sanity_check($dir);
+
+ my $old_cwd = getcwd();
+ chdir $dir or syserr(g_("unable to chdir to '%s'"), $dir);
+
+ # Check for uncommitted files.
+ # To support dpkg-source -i, get a list of files
+ # equivalent to the ones git status finds, and remove any
+ # ignored files from it.
+ my @ignores = '--exclude-per-directory=.gitignore';
+ my $core_excludesfile = qx(git config --get core.excludesfile);
+ chomp $core_excludesfile;
+ if (length $core_excludesfile && -e $core_excludesfile) {
+ push @ignores, "--exclude-from=$core_excludesfile";
+ }
+ if (-e '.git/info/exclude') {
+ push @ignores, '--exclude-from=.git/info/exclude';
+ }
+ open(my $git_ls_files_fh, '-|', 'git', 'ls-files', '--modified', '--deleted',
+ '-z', '--others', @ignores) or subprocerr('git ls-files');
+ my @files;
+ {
+ local $_;
+ local $/ = "\0";
+ while (<$git_ls_files_fh>) {
+ chomp;
+ if (! length $diff_ignore_regex ||
+ ! m/$diff_ignore_regex/o) {
+ push @files, $_;
+ }
+ }
+ }
+ close($git_ls_files_fh) or syserr(g_('git ls-files exited nonzero'));
+ if (@files) {
+ error(g_('uncommitted, not-ignored changes in working directory: %s'),
+ join(' ', @files));
+ }
+
+ # If a depth was specified, need to create a shallow clone and
+ # bundle that.
+ my $tmp;
+ my $shallowfile;
+ if ($self->{options}{git_depth}) {
+ chdir $old_cwd or syserr(g_("unable to chdir to '%s'"), $old_cwd);
+ $tmp = tempdir("$dirname.git.XXXXXX", DIR => $updir);
+ push_exit_handler(sub { erasedir($tmp) });
+ my $clone_dir = "$tmp/repo.git";
+ # file:// is needed to avoid local cloning, which does not
+ # create a shallow clone.
+ info(g_('creating shallow clone with depth %s'),
+ $self->{options}{git_depth});
+ system('git', 'clone', '--depth=' . $self->{options}{git_depth},
+ '--quiet', '--bare', 'file://' . abs_path($dir), $clone_dir);
+ subprocerr('git clone') if $?;
+ chdir($clone_dir)
+ or syserr(g_("unable to chdir to '%s'"), $clone_dir);
+ $shallowfile = "$basenamerev.gitshallow";
+ system('cp', '-f', 'shallow', "$old_cwd/$shallowfile");
+ subprocerr('cp shallow') if $?;
+ }
+
+ # Create the git bundle.
+ my $bundlefile = "$basenamerev.git";
+ my @bundle_arg=$self->{options}{git_ref} ?
+ (@{$self->{options}{git_ref}}) : '--all';
+ info(g_('bundling: %s'), join(' ', @bundle_arg));
+ system('git', 'bundle', 'create', "$old_cwd/$bundlefile",
+ @bundle_arg,
+ 'HEAD', # ensure HEAD is included no matter what
+ '--', # avoids ambiguity error when referring to eg, a debian branch
+ );
+ subprocerr('git bundle') if $?;
+
+ chdir $old_cwd or syserr(g_("unable to chdir to '%s'"), $old_cwd);
+
+ if (defined $tmp) {
+ erasedir($tmp);
+ pop_exit_handler();
+ }
+
+ $self->add_file($bundlefile);
+ if (defined $shallowfile) {
+ $self->add_file($shallowfile);
+ }
+}
+
+sub do_extract {
+ my ($self, $newdirectory) = @_;
+ my $fields = $self->{fields};
+
+ my $dscdir = $self->{basedir};
+ my $basenamerev = $self->get_basename(1);
+
+ my @files = $self->get_files();
+ my ($bundle, $shallow);
+ foreach my $file (@files) {
+ if ($file =~ /^\Q$basenamerev\E\.git$/) {
+ if (! defined $bundle) {
+ $bundle = $file;
+ } else {
+ error(g_('format v3.0 (git) uses only one .git file'));
+ }
+ } elsif ($file =~ /^\Q$basenamerev\E\.gitshallow$/) {
+ if (! defined $shallow) {
+ $shallow = $file;
+ } else {
+ error(g_('format v3.0 (git) uses only one .gitshallow file'));
+ }
+ } else {
+ error(g_('format v3.0 (git) unknown file: %s', $file));
+ }
+ }
+ if (! defined $bundle) {
+ error(g_('format v3.0 (git) expected %s'), "$basenamerev.git");
+ }
+
+ if ($self->{options}{no_overwrite_dir} and -e $newdirectory) {
+ error(g_('unpack target exists: %s'), $newdirectory);
+ } else {
+ erasedir($newdirectory);
+ }
+
+ # Extract git bundle.
+ info(g_('cloning %s'), $bundle);
+ system('git', 'clone', '--quiet', $dscdir . $bundle, $newdirectory);
+ subprocerr('git bundle') if $?;
+
+ if (defined $shallow) {
+ # Move shallow info file into place, so git does not
+ # try to follow parents of shallow refs.
+ info(g_('setting up shallow clone'));
+ system('cp', '-f', $dscdir . $shallow, "$newdirectory/.git/shallow");
+ subprocerr('cp') if $?;
+ }
+
+ _sanity_check($newdirectory);
+}
+
+1;
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