From 7c0c47e26af17918031d449d24abe40ad452f51a Mon Sep 17 00:00:00 2001
From: Eric Wong <e@yhbt.net>
Date: Sat, 19 Sep 2020 09:37:10 +0000
Subject: add gcf2 client and executable script

This should be able to replace multiple `git cat-file' for blob
retrieval, but adjustments may be needed.
---
 lib/PublicInbox/Gcf2Client.pm | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 lib/PublicInbox/Gcf2Client.pm

(limited to 'lib/PublicInbox')

diff --git a/lib/PublicInbox/Gcf2Client.pm b/lib/PublicInbox/Gcf2Client.pm
new file mode 100644
index 00000000..71fbb1d1
--- /dev/null
+++ b/lib/PublicInbox/Gcf2Client.pm
@@ -0,0 +1,35 @@
+# Copyright (C) 2020 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+package PublicInbox::Gcf2Client;
+use strict;
+use parent 'PublicInbox::Git';
+use PublicInbox::Spawn qw(popen_rd);
+use IO::Handle ();
+
+sub new {
+	my $self = shift->SUPER::new('/nonexistent');
+	my ($out_r, $out_w);
+	pipe($out_r, $out_w) or $self->fail("pipe failed: $!");
+	my $cmd = [ 'public-inbox-gcf2' ];
+	@$self{qw(in pid)} = popen_rd($cmd, undef, { 0 => $out_r });
+	$self->{inflight} = [];
+	$self->{out} = $out_w;
+	fcntl($out_w, 1031, 4096) if $^O eq 'linux'; # 1031: F_SETPIPE_SZ
+	$out_w->autoflush(1);
+	$self;
+}
+
+sub add_git_dir {
+	my ($self, $git_dir) = @_;
+
+	# ensure buffers are drained, length($git_dir) may exceed
+	# PIPE_BUF on platforms where PIPE_BUF is only 512 bytes
+	my $inflight = $self->{inflight};
+	while (scalar(@$inflight)) {
+		$self->cat_async_step($inflight);
+	}
+	print { $self->{out} } $git_dir, "\n" or
+				$self->fail("write error: $!");
+}
+
+1;
-- 
cgit v1.2.3-24-ge0c7