mda+learn: add --help / -h support

[public-inbox.git] / script / public-inbox-mda

diff --git a/script/public-inbox-mda b/script/public-inbox-mda
index 42d0e00cbb72687bbdaf5e67e1fb0c6c379ba9b1..3ed5abb6d910dfb76b586a5fbd4dfb4ca9dfa024 100755 (executable)
--- a/script/public-inbox-mda
+++ b/script/public-inbox-mda
@@ -3,11 +3,21 @@
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 #
 # Mail delivery agent for public-inbox, run from your MTA upon mail delivery
+my $help = <<EOF;
+usage: public-inbox-mda [OPTIONS] </path/to/RFC2822_message
+
+options:
+
+  --no-precheck  skip internal checks for spam messages
+
+See public-inbox-mda(1) man page for full documentation.
+EOF
 use strict;
-use warnings;
-my $usage = 'public-inbox-mda [OPTIONS] < rfc2822_message';
-my $precheck = grep(/\A--no-precheck\z/, @ARGV) ? 0 : 1;
-my ($ems, $emm);
+use Getopt::Long qw(:config gnu_getopt no_ignore_case auto_abbrev);
+my ($ems, $emm, $show_help);
+my $precheck = 1;
+GetOptions('precheck!' => \$precheck, 'help|h' => \$show_help) or
+       do { print STDERR $help; exit 1 };
 
 my $do_exit = sub {
        my ($code) = shift;
@@ -119,7 +129,7 @@ for my $ibx (@$dests) {
                # destination succeeds
                $emm->abort;
        } else { # v1-only
-               my $mid = $mime->header_obj->header_raw('Message-ID');
+               my $mid = $mime->header_raw('Message-ID');
                # this message is similar to what ssoma-mda shows:
                print STDERR "CONFLICT: Message-ID: $mid exists\n";
        }