X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FMID.pm;h=78952b95e02f1eb94a6876017bc6c8e6a911978c;hb=3cda6050b7c8f73e7fd86f88efc5cd42d0c13f73;hp=d097011bf4ae21b58075def04f2306cd66a22f54;hpb=9041b136ba7a106ed5ff33da4b6ae28c2a0f4333;p=public-inbox.git

diff --git a/lib/PublicInbox/MID.pm b/lib/PublicInbox/MID.pm
index d097011b..78952b95 100644
--- a/lib/PublicInbox/MID.pm
+++ b/lib/PublicInbox/MID.pm
@@ -1,10 +1,12 @@
-# Copyright (C) 2015, all contributors <meta@public-inbox.org>
+# Copyright (C) 2015 all contributors <meta@public-inbox.org>
 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
+#
+# Various Message-ID-related functions.
 package PublicInbox::MID;
 use strict;
 use warnings;
 use base qw/Exporter/;
-our @EXPORT_OK = qw/mid_clean mid_compressed mid2path/;
+our @EXPORT_OK = qw/mid_clean id_compress mid2path mid_mime/;
 use Digest::SHA qw/sha1_hex/;
 use constant MID_MAX => 40; # SHA-1 hex length
 
@@ -12,16 +14,20 @@ sub mid_clean {
 	my ($mid) = @_;
 	defined($mid) or die "no Message-ID";
 	# MDA->precheck did more checking for us
-	$mid =~ s/\A\s*<?//;
-	$mid =~ s/>?\s*\z//;
+	if ($mid =~ /<([^>]+)>/) {
+		$mid = $1;
+	}
 	$mid;
 }
 
 # this is idempotent
-sub mid_compressed {
-	my ($mid) = @_;
-	return $mid if (length($mid) <= MID_MAX);
-	sha1_hex($mid);
+sub id_compress {
+	my ($id, $force) = @_;
+
+	if ($force || $id =~ /[^\w\-]/ || length($id) > MID_MAX) {
+		return sha1_hex($id);
+	}
+	$id;
 }
 
 sub mid2path {
@@ -30,10 +36,12 @@ sub mid2path {
 
 	unless (defined $x38) {
 		# compatibility with old links (or short Message-IDs :)
-		$mid = sha1_hex($mid);
+		$mid = sha1_hex(mid_clean($mid));
 		($x2, $x38) = ($mid =~ /\A([a-f0-9]{2})([a-f0-9]{38})\z/);
 	}
 	"$x2/$x38";
 }
 
+sub mid_mime ($) { $_[0]->header_obj->header_raw('Message-ID') }
+
 1;