1 files changed, 58 insertions, 0 deletions
diff --git a/script/lei b/script/lei
new file mode 100755
index 00000000..1b5af3a1
--- /dev/null
+++ b/script/lei
@@ -0,0 +1,58 @@
+#!perl -w
+# Copyright (C) 2020 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+use strict;
+use v5.10.1;
+use Cwd qw(cwd);
+use IO::Socket::UNIX;
+
+if (eval { require IO::FDPass; 1 }) { # use daemon to reduce load time
+        my $path = do {
+                my $runtime_dir = ($ENV{XDG_RUNTIME_DIR} // '') . '/lei';
+                if ($runtime_dir eq '/lei') {
+                        require File::Spec;
+                        $runtime_dir = File::Spec->tmpdir."/lei-$<";
+                }
+                unless (-d $runtime_dir && -w _) {
+                        require File::Path;
+                        File::Path::mkpath($runtime_dir, 0, 0700);
+                }
+                "$runtime_dir/sock";
+        };
+        my $sock = IO::Socket::UNIX->new(Peer => $path, Type => SOCK_STREAM);
+        unless ($sock) { # start the daemon if not started
+                my $err = $!;
+                require PublicInbox::LeiDaemon;
+                $err = PublicInbox::LeiDaemon::lazy_start($path, $err);
+                # try connecting again anyways, unlink+bind may be racy
+                $sock = IO::Socket::UNIX->new(Peer => $path,
+                                                Type => SOCK_STREAM) // die
+                        "connect($path): $! (bind($path): $err)";
+        }
+        my $pwd = $ENV{PWD};
+        my $cwd = cwd();
+        if ($pwd) { # prefer ENV{PWD} if it's a symlink to real cwd
+                my @st_cwd = stat($cwd) or die "stat(cwd=$cwd): $!\n";
+                my @st_pwd = stat($pwd);
+                # make sure st_dev/st_ino match for {PWD} to be valid
+                $pwd = $cwd if (!@st_pwd || $st_pwd[1] != $st_cwd[1] ||
+                                        $st_pwd[0] != $st_cwd[0]);
+        } else {
+                $pwd = $cwd;
+        }
+        local $ENV{PWD} = $pwd;
+        $sock->autoflush(1);
+        IO::FDPass::send(fileno($sock), $_) for (0..2);
+        my $buf = "$$\0\0>" . join("]\0[", @ARGV) . "\0\0>";
+        while (my ($k, $v) = each %ENV) { $buf .= "$k=$v\0" }
+        $buf .= "\0\0";
+        print $sock $buf or die "print(sock, buf): $!";
+        local $/ = "\n";
+        while (my $line = <$sock>) {
+                $line =~ /\Aexit=([0-9]+)\n\z/ and exit($1 + 0);
+                die $line;
+        }
+} else { # for systems lacking IO::FDPass
+        require PublicInbox::LeiDaemon;
+        PublicInbox::LeiDaemon::oneshot();
+}