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
11 ## Use --metainfo to specify the extension for a meta data file, where
12 ## import-tars can read the commit message and optionally author and
13 ## committer information.
15 ## echo 'This is the commit message' > myfile.tar.bz2.msg
16 ## perl import-tars.perl --metainfo=msg myfile.tar.bz2
23 die "usage: import-tars [--metainfo=extension] *.tar.{gz,bz2,lzma,xz,Z}\n"
24 unless GetOptions
('metainfo=s' => \
$metaext) && @ARGV;
26 my $branch_name = 'import-tars';
27 my $branch_ref = "refs/heads/$branch_name";
28 my $author_name = $ENV{'GIT_AUTHOR_NAME'} || 'T Ar Creator';
29 my $author_email = $ENV{'GIT_AUTHOR_EMAIL'} || 'tar@example.com';
30 my $committer_name = $ENV{'GIT_COMMITTER_NAME'} || `git config --get user.name`;
31 my $committer_email = $ENV{'GIT_COMMITTER_EMAIL'} || `git config --get user.email`;
33 chomp($committer_name, $committer_email);
35 open(FI
, '|-', 'git', 'fast-import', '--quiet')
36 or die "Unable to start git fast-import: $!\n";
37 foreach my $tar_file (@ARGV)
39 my $commit_time = time;
40 $tar_file =~ m
,([^/]+)$,;
43 if ($tar_name =~ s/\.(tar\.gz|tgz)$//) {
44 open(I
, '-|', 'gunzip', '-c', $tar_file)
45 or die "Unable to gunzip -c $tar_file: $!\n";
46 } elsif ($tar_name =~ s/\.(tar\.bz2|tbz2)$//) {
47 open(I
, '-|', 'bunzip2', '-c', $tar_file)
48 or die "Unable to bunzip2 -c $tar_file: $!\n";
49 } elsif ($tar_name =~ s/\.tar\.Z$//) {
50 open(I
, '-|', 'uncompress', '-c', $tar_file)
51 or die "Unable to uncompress -c $tar_file: $!\n";
52 } elsif ($tar_name =~ s/\.(tar\.(lzma|xz)|(tlz|txz))$//) {
53 open(I
, '-|', 'xz', '-dc', $tar_file)
54 or die "Unable to xz -dc $tar_file: $!\n";
55 } elsif ($tar_name =~ s/\.tar$//) {
56 open(I
, $tar_file) or die "Unable to open $tar_file: $!\n";
58 die "Unrecognized compression format: $tar_file\n";
64 my ($top_dir, %files);
66 while (read(I
, $_, 512) == 512) {
67 my ($name, $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*', $_;
73 last unless length($name);
74 if ($name eq '././@LongLink') {
76 if (read(I
, $_, 512) != 512) {
77 die ('Short archive');
79 $name = unpack 'Z257', $_;
83 if (read(I
, $_, 512) != 512) {
84 die ('Short archive');
86 ($dummy, $mode, $uid, $gid, $size, $mtime,
87 $chksum, $typeflag, $linkname, $magic,
88 $version, $uname, $gname, $devmajor, $devminor,
89 $prefix) = unpack 'Z100 Z8 Z8 Z8 Z12 Z12
91 Z2 Z32 Z32 Z8 Z8 Z*', $_;
93 next if $name =~ m{/\z};
97 next if $typeflag == 5; # directory
99 print FI
"blob\n", "mark :$next_mark\n";
100 if ($typeflag == 2) { # symbolic link
101 print FI
"data ", length($linkname), "\n", $linkname;
104 print FI
"data $size\n";
105 while ($size > 0 && read(I
, $_, 512) == 512) {
106 print FI
substr($_, 0, $size);
114 $path = "$prefix/$name";
118 $files{$path} = [$next_mark++, $mode];
120 $author_time = $mtime if $mtime > $author_time;
121 $path =~ m
,^([^/]+)/,;
122 $top_dir = $1 unless $top_dir;
123 $have_top_dir = 0 if $top_dir ne $1;
126 my $commit_msg = "Imported from $tar_file.";
127 my $this_committer_name = $committer_name;
128 my $this_committer_email = $committer_email;
129 my $this_author_name = $author_name;
130 my $this_author_email = $author_email;
131 if ($metaext ne '') {
132 # Optionally read a commit message from <filename.tar>.msg
133 # Add a line on the form "Committer: name <e-mail>" to override
134 # the committer and "Author: name <e-mail>" to override the
135 # author for this tar ball.
136 if (open MSG
, '<', "${tar_file}.${metaext}") {
140 if (!$header_done && /^Committer:\s+([^<>]*)\s+<(.*)>\s*$/i) {
141 $this_committer_name = $1;
142 $this_committer_email = $2;
143 } elsif (!$header_done && /^Author:\s+([^<>]*)\s+<(.*)>\s*$/i) {
144 $this_author_name = $1;
145 $this_author_email = $2;
146 } elsif (!$header_done && /^$/) { # empty line ends header.
159 author $this_author_name <$this_author_email> $author_time +0000
160 committer $this_committer_name <$this_committer_email> $commit_time +0000
161 data <<END_OF_COMMIT_MESSAGE
163 END_OF_COMMIT_MESSAGE
168 foreach my $path (keys %files)
170 my ($mark, $mode) = @{$files{$path}};
171 $path =~ s,^([^/]+)/,, if $have_top_dir;
172 $mode = $mode & 0111 ? 0755 : 0644 unless $mode == 0120000;
173 printf FI "M %o :%i %s\n", $mode, $mark, $path;
180 tagger
$author_name <$author_email> $author_time +0000
181 data
<<END_OF_TAG_MESSAGE