3 ## tar archive frontend for git-fast-import
7 ## mkdir project; cd project; git init
8 ## perl import-tars.perl *.tar.bz2
9 ## git whatchanged import-tars
13 die "usage: import-tars *.tar.{gz,bz2,Z}\n" unless @ARGV;
15 my $branch_name = 'import-tars';
16 my $branch_ref = "refs/heads/$branch_name";
17 my $committer_name = 'T Ar Creator';
18 my $committer_email = 'tar@example.com';
20 open(FI
, '|-', 'git', 'fast-import', '--quiet')
21 or die "Unable to start git fast-import: $!\n";
22 foreach my $tar_file (@ARGV)
24 $tar_file =~ m
,([^/]+)$,;
27 if ($tar_name =~ s/\.(tar\.gz|tgz)$//) {
28 open(I
, '-|', 'gunzip', '-c', $tar_file)
29 or die "Unable to gunzip -c $tar_file: $!\n";
30 } elsif ($tar_name =~ s/\.(tar\.bz2|tbz2)$//) {
31 open(I
, '-|', 'bunzip2', '-c', $tar_file)
32 or die "Unable to bunzip2 -c $tar_file: $!\n";
33 } elsif ($tar_name =~ s/\.tar\.Z$//) {
34 open(I
, '-|', 'uncompress', '-c', $tar_file)
35 or die "Unable to uncompress -c $tar_file: $!\n";
36 } elsif ($tar_name =~ s/\.tar$//) {
37 open(I
, $tar_file) or die "Unable to open $tar_file: $!\n";
39 die "Unrecognized compression format: $tar_file\n";
45 my ($top_dir, %files);
47 while (read(I
, $_, 512) == 512) {
48 my ($name, $mode, $uid, $gid, $size, $mtime,
49 $chksum, $typeflag, $linkname, $magic,
50 $version, $uname, $gname, $devmajor, $devminor,
51 $prefix) = unpack 'Z100 Z8 Z8 Z8 Z12 Z12
53 Z2 Z32 Z32 Z8 Z8 Z*', $_;
55 if ($name eq '././@LongLink') {
57 if (read(I
, $_, 512) != 512) {
58 die ('Short archive');
60 $name = unpack 'Z257', $_;
64 if (read(I
, $_, 512) != 512) {
65 die ('Short archive');
67 ($dummy, $mode, $uid, $gid, $size, $mtime,
68 $chksum, $typeflag, $linkname, $magic,
69 $version, $uname, $gname, $devmajor, $devminor,
70 $prefix) = unpack 'Z100 Z8 Z8 Z8 Z12 Z12
72 Z2 Z32 Z32 Z8 Z8 Z*', $_;
74 next if $name =~ m{/\z};
78 next if $mode & 0040000;
80 print FI
"blob\n", "mark :$next_mark\n", "data $size\n";
81 while ($size > 0 && read(I
, $_, 512) == 512) {
82 print FI
substr($_, 0, $size);
87 my $path = "$prefix$name";
88 $files{$path} = [$next_mark++, $mode];
90 $commit_time = $mtime if $mtime > $commit_time;
91 $path =~ m
,^([^/]+)/,;
92 $top_dir = $1 unless $top_dir;
93 $have_top_dir = 0 if $top_dir ne $1;
98 committer $committer_name <$committer_email> $commit_time +0000
99 data <<END_OF_COMMIT_MESSAGE
100 Imported from $tar_file.
101 END_OF_COMMIT_MESSAGE
106 foreach my $path (keys %files)
108 my ($mark, $mode) = @{$files{$path}};
109 $path =~ s,^([^/]+)/,, if $have_top_dir;
110 printf FI "M %o :%i %s\n", $mode & 0111 ? 0755 : 0644, $mark, $path;
117 tagger
$committer_name <$committer_email> $commit_time +0000
118 data
<<END_OF_TAG_MESSAGE