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git/contrib/fast-import/import-tars.perl
Johannes Schindelin 87859f3443 import-tars: be nice to wrong directory modes
Some tars seem to have modes 0755 for directories, not 01000755. Do
not generate an empty object for them, but ignore them.

Noticed by riddochc on IRC.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2007-04-28 20:01:36 -04:00

107 lines
2.6 KiB
Perl
Executable file

#!/usr/bin/perl
## tar archive frontend for git-fast-import
##
## For example:
##
## mkdir project; cd project; git init
## perl import-tars.perl *.tar.bz2
## git whatchanged import-tars
##
use strict;
die "usage: import-tars *.tar.{gz,bz2,Z}\n" unless @ARGV;
my $branch_name = 'import-tars';
my $branch_ref = "refs/heads/$branch_name";
my $committer_name = 'T Ar Creator';
my $committer_email = 'tar@example.com';
open(FI, '|-', 'git', 'fast-import', '--quiet')
or die "Unable to start git fast-import: $!\n";
foreach my $tar_file (@ARGV)
{
$tar_file =~ m,([^/]+)$,;
my $tar_name = $1;
if ($tar_name =~ s/\.(tar\.gz|tgz)$//) {
open(I, '-|', 'gunzip', '-c', $tar_file)
or die "Unable to gunzip -c $tar_file: $!\n";
} elsif ($tar_name =~ s/\.(tar\.bz2|tbz2)$//) {
open(I, '-|', 'bunzip2', '-c', $tar_file)
or die "Unable to bunzip2 -c $tar_file: $!\n";
} elsif ($tar_name =~ s/\.tar\.Z$//) {
open(I, '-|', 'uncompress', '-c', $tar_file)
or die "Unable to uncompress -c $tar_file: $!\n";
} elsif ($tar_name =~ s/\.tar$//) {
open(I, $tar_file) or die "Unable to open $tar_file: $!\n";
} else {
die "Unrecognized compression format: $tar_file\n";
}
my $commit_time = 0;
my $next_mark = 1;
my $have_top_dir = 1;
my ($top_dir, %files);
while (read(I, $_, 512) == 512) {
my ($name, $mode, $uid, $gid, $size, $mtime,
$chksum, $typeflag, $linkname, $magic,
$version, $uname, $gname, $devmajor, $devminor,
$prefix) = unpack 'Z100 Z8 Z8 Z8 Z12 Z12
Z8 Z1 Z100 Z6
Z2 Z32 Z32 Z8 Z8 Z*', $_;
last unless $name;
next if $name =~ '/$';
$mode = oct $mode;
$size = oct $size;
$mtime = oct $mtime;
next if $mode & 0040000;
print FI "blob\n", "mark :$next_mark\n", "data $size\n";
while ($size > 0 && read(I, $_, 512) == 512) {
print FI substr($_, 0, $size);
$size -= 512;
}
print FI "\n";
my $path = "$prefix$name";
$files{$path} = [$next_mark++, $mode];
$commit_time = $mtime if $mtime > $commit_time;
$path =~ m,^([^/]+)/,;
$top_dir = $1 unless $top_dir;
$have_top_dir = 0 if $top_dir ne $1;
}
print FI <<EOF;
commit $branch_ref
committer $committer_name <$committer_email> $commit_time +0000
data <<END_OF_COMMIT_MESSAGE
Imported from $tar_file.
END_OF_COMMIT_MESSAGE
deleteall
EOF
foreach my $path (keys %files)
{
my ($mark, $mode) = @{$files{$path}};
$path =~ s,^([^/]+)/,, if $have_top_dir;
printf FI "M %o :%i %s\n", $mode & 0111 ? 0755 : 0644, $mark, $path;
}
print FI "\n";
print FI <<EOF;
tag $tar_name
from $branch_ref
tagger $committer_name <$committer_email> $commit_time +0000
data <<END_OF_TAG_MESSAGE
Package $tar_name
END_OF_TAG_MESSAGE
EOF
close I;
}
close FI;