use POSIX qw(dup2);
require IO::Handle;
use PublicInbox::Spawn qw(spawn popen_rd);
+use base qw(Exporter);
+our @EXPORT_OK = qw(git_unquote);
+
+my %GIT_ESC = (
+ a => "\a",
+ b => "\b",
+ f => "\f",
+ n => "\n",
+ r => "\r",
+ t => "\t",
+ v => "\013",
+ '"' => '"',
+ '\\' => '\\',
+);
+
+# unquote pathnames used by git, see quote.c::unquote_c_style.c in git.git
+sub git_unquote ($) {
+ return $_[0] unless ($_[0] =~ /\A"(.*)"\z/);
+ $_[0] = $1;
+ $_[0] =~ s/\\([\\"abfnrtv])/$GIT_ESC{$1}/g;
+ $_[0] =~ s/\\([0-7]{1,3})/chr(oct($1))/ge;
+ $_[0];
+}
sub new {
my ($class, $git_dir) = @_;
- bless { git_dir => $git_dir }, $class
+ my @st;
+ $st[7] = $st[10] = 0;
+ # may contain {-wt} field (working-tree (File::Temp::Dir))
+ bless { git_dir => $git_dir, st => \@st }, $class
+}
+
+sub alternates_changed {
+ my ($self) = @_;
+ my $alt = "$self->{git_dir}/objects/info/alternates";
+ my @st = stat($alt) or return 0;
+ my $old_st = $self->{st};
+ # 10 - ctime, 7 - size
+ return 0 if ($st[10] == $old_st->[10] && $st[7] == $old_st->[7]);
+ $self->{st} = \@st;
}
sub _bidi_pipe {
pipe($in_r, $in_w) or fail($self, "pipe failed: $!");
pipe($out_r, $out_w) or fail($self, "pipe failed: $!");
+ if ($^O eq 'linux') { # 1031: F_SETPIPE_SZ
+ fcntl($out_w, 1031, 4096);
+ fcntl($in_w, 1031, 4096) if $batch eq '--batch-check';
+ }
my @cmd = ('git', "--git-dir=$self->{git_dir}", qw(cat-file), $batch);
my $redir = { 0 => fileno($out_r), 1 => fileno($in_w) };
sub cat_file {
my ($self, $obj, $ref) = @_;
+ my ($retried, $in, $head);
+again:
batch_prepare($self);
$self->{out}->print($obj, "\n") or fail($self, "write error: $!");
- my $in = $self->{in};
+ $in = $self->{in};
local $/ = "\n";
- my $head = $in->getline;
- $head =~ / missing$/ and return undef;
+ $head = $in->getline;
+ if ($head =~ / missing$/) {
+ if (!$retried && alternates_changed($self)) {
+ $retried = 1;
+ cleanup($self);
+ goto again;
+ }
+ return;
+ }
$head =~ /^[0-9a-f]{40} \S+ (\d+)$/ or
fail($self, "Unexpected result from git cat-file: $head");
sub DESTROY { cleanup(@_) }
+# show the blob URL for cgit/gitweb/whatever
+sub src_blob_url {
+ my ($self, $oid) = @_;
+ # blob_fmt = "https://example.com/foo.git/blob/%s"
+ if (my $bfu = $self->{blob_fmt_url}) {
+ return sprintf($bfu, $oid);
+ }
+
+ # don't show full FS path, basename should be OK:
+ if ($self->{git_dir} =~ m!/([^/]+)\z!) {
+ return "/path/to/$1";
+ }
+ '???';
+}
+
1;
__END__
=pod