lei export-kw: relax IMAP URL matching

[public-inbox.git] / lib / PublicInbox / LeiExportKw.pm

diff --git a/lib/PublicInbox/LeiExportKw.pm b/lib/PublicInbox/LeiExportKw.pm
index 5ad339593f2986aea644187829a4f09c1ef7b2db..82a4db04f987e45287618004ae9a22d17bfe566b 100644 (file)
--- a/lib/PublicInbox/LeiExportKw.pm
+++ b/lib/PublicInbox/LeiExportKw.pm
@@ -84,6 +84,37 @@ sub input_path_url {
        $lms->lms_commit;
 }
 
+sub match_imap_url ($$) {
+       my ($all, $url) = @_; # $all = [ $lms->folders ];
+       require PublicInbox::URIimap;
+       my $cli = PublicInbox::URIimap->new($url)->canonical;
+       my ($s, $h, $mb) = ($cli->scheme, $cli->host, $cli->mailbox);
+       my @uri = map { PublicInbox::URIimap->new($_)->canonical }
+               grep(m!\A\Q$s\E://.*?\Q$h\E\b.*?/\Q$mb\E\b!, @$all);
+       my @match;
+       for my $x (@uri) {
+               next if $x->mailbox ne $cli->mailbox;
+               next if $x->host ne $cli->host;
+               next if $x->port != $cli->port;
+               my $x_uidval = $x->uidvalidity;
+               next if ($cli->uidvalidity // $x_uidval) != $x_uidval;
+
+               # allow nothing in CLI to possibly match ";AUTH=ANONYMOUS"
+               if (defined($x->auth) && !defined($cli->auth) &&
+                               !defined($cli->user)) {
+                       push @match, $x;
+               # or maybe user was forgotten on CLI:
+               } elsif (defined($x->user) && !defined($cli->user)) {
+                       push @match, $x;
+               } elsif (($x->user//"\0") eq ($cli->user//"\0")) {
+                       push @match, $x;
+               }
+       }
+       return $match[0] if scalar(@match) <= 1;
+       warn "E: `$url' is ambiguous:\n\t", join("\n\t", @match), "\n";
+       undef;
+}
+
 sub lei_export_kw {
        my ($lei, @folders) = @_;
        my $sto = $lei->_lei_store or return $lei->fail(<<EOM);
@@ -133,6 +164,16 @@ EOM
                                my $d = 'maildir:'.$lei->rel2abs($_);
                                push(@no, $_) unless $all{$d};
                                $_ = $d;
+                       } elsif (m!\Aimaps?://!i) {
+                               my $orig = $_;
+                               if (my $canon = match_imap_url(\@all, $orig)) {
+                                       $lei->qerr(<<EOM);
+# using `$canon' instead of `$orig'
+EOM
+                                       $_ = $canon;
+                               } else {
+                                       push @no, $orig;
+                               }
                        } else {
                                push @no, $_;
                        }