[PATCH 3/4] lei: use maildir_each_eml in more places

[Eric Wong <e@80x24.org>]

This saves us some code and redundant callsites for
eml_from_path.  We'll change maildir_each_eml to include the
filename to facilitate an upcoming change to "lei q" without
--augment
---
 lib/PublicInbox/LeiConvert.pm |  3 +--
 lib/PublicInbox/LeiToMail.pm  | 18 ++++++------------
 lib/PublicInbox/MdirReader.pm | 10 ++++++----
 t/lei-convert.t               |  2 +-
 4 files changed, 14 insertions(+), 19 deletions(-)

diff --git a/lib/PublicInbox/LeiConvert.pm b/lib/PublicInbox/LeiConvert.pm
index 4c0bbd88..0c705ba4 100644
--- a/lib/PublicInbox/LeiConvert.pm
+++ b/lib/PublicInbox/LeiConvert.pm
@@ -7,7 +7,6 @@ use strict;
 use v5.10.1;
 use parent qw(PublicInbox::IPC);
 use PublicInbox::Eml;
-use PublicInbox::InboxWritable qw(eml_from_path);
 use PublicInbox::LeiStore;
 use PublicInbox::LeiOverview;
 
@@ -24,7 +23,7 @@ sub net_cb { # callback for ->imap_each, ->nntp_each
 }
 
 sub mdir_cb {
-	my ($kw, $eml, $self) = @_;
+	my ($f, $kw, $eml, $self) = @_;
 	$self->{wcb}->(undef, { kw => $kw }, $eml);
 }
 
diff --git a/lib/PublicInbox/LeiToMail.pm b/lib/PublicInbox/LeiToMail.pm
index de640657..31b8aba8 100644
--- a/lib/PublicInbox/LeiToMail.pm
+++ b/lib/PublicInbox/LeiToMail.pm
@@ -19,7 +19,6 @@ use IO::Handle; # ->autoflush
 use Fcntl qw(SEEK_SET SEEK_END O_CREAT O_EXCL O_WRONLY);
 use Errno qw(EEXIST ESPIPE ENOENT EPIPE);
 use Digest::SHA qw(sha256_hex);
-my ($maildir_each_file);
 
 # struggles with short-lived repos, Gcf2Client makes little sense with lei;
 # but we may use in-process libgit2 in the future.
@@ -268,8 +267,8 @@ sub _mbox_write_cb ($$) {
 	}
 }
 
-sub _augment_file { # maildir_each_file cb
-	my ($f, $lei, $mod, $shard) = @_;
+sub _augment_file { # maildir_each_eml cb
+	my ($f, undef, $eml, $lei, $mod, $shard) = @_;
 	if ($mod) {
 		# can't get dirent.d_ino w/ pure Perl, so we extract the OID
 		# if it looks like one:
@@ -278,7 +277,6 @@ sub _augment_file { # maildir_each_file cb
 		my $recno = hex(substr($hex, 0, 8));
 		return if ($recno % $mod) != $shard;
 	}
-	my $eml = PublicInbox::InboxWritable::eml_from_path($f) or return;
 	_augment($eml, $lei);
 }
 
@@ -375,12 +373,7 @@ sub new {
 	my $dst = $lei->{ovv}->{dst};
 	my $self = bless {}, $cls;
 	if ($fmt eq 'maildir') {
-		$maildir_each_file //= do {
-			require PublicInbox::MdirReader;
-			PublicInbox::MdirReader->can('maildir_each_file');
-		};
-		$lei->{opt}->{augment} and
-			require PublicInbox::InboxWritable; # eml_from_path
+		require PublicInbox::MdirReader;
 		$self->{base_type} = 'maildir';
 		-e $dst && !-d _ and die
 				"$dst exists and is not a directory\n";
@@ -430,12 +423,13 @@ sub _do_augment_maildir {
 		my $dedupe = $lei->{dedupe};
 		if ($dedupe && $dedupe->prepare_dedupe) {
 			my ($mod, $shard) = @{$self->{shard_info} // []};
-			$maildir_each_file->($dst, \&_augment_file,
+			PublicInbox::MdirReader::maildir_each_eml($dst,
+						\&_augment_file,
 						$lei, $mod, $shard);
 			$dedupe->pause_dedupe;
 		}
 	} else { # clobber existing Maildir
-		$maildir_each_file->($dst, \&_unlink);
+		PublicInbox::MdirReader::maildir_each_file($dst, \&_unlink);
 	}
 }
 
diff --git a/lib/PublicInbox/MdirReader.pm b/lib/PublicInbox/MdirReader.pm
index 5fa534f5..44724af1 100644
--- a/lib/PublicInbox/MdirReader.pm
+++ b/lib/PublicInbox/MdirReader.pm
@@ -48,17 +48,19 @@ sub maildir_each_eml ($$;@) {
 			next if substr($bn, 0, 1) eq '.';
 			my @f = split(/:/, $bn, -1);
 			next if scalar(@f) != 1;
-			my $eml = eml_from_path($pfx.$bn) or next;
-			$cb->([], $eml, @arg);
+			my $f = $pfx.$bn;
+			my $eml = eml_from_path($f) or next;
+			$cb->($f, [], $eml, @arg);
 		}
 	}
 	$pfx = "$dir/cur/";
 	opendir my $dh, $pfx or return;
 	while (defined(my $bn = readdir($dh))) {
 		my $fl = maildir_basename_flags($bn) // next;
-		my $eml = eml_from_path($pfx.$bn) or next;
+		my $f = $pfx.$bn;
+		my $eml = eml_from_path($f) or next;
 		my @kw = sort(map { $c2kw{$_} // () } split(//, $fl));
-		$cb->(\@kw, $eml, @arg);
+		$cb->($f, \@kw, $eml, @arg);
 	}
 }
 
diff --git a/t/lei-convert.t b/t/lei-convert.t
index 20099f65..186cfb13 100644
--- a/t/lei-convert.t
+++ b/t/lei-convert.t
@@ -58,7 +58,7 @@ test_lei({ tmpdir => $tmpdir }, sub {
 	ok(-d "$d/md", 'Maildir created');
 	my @md;
 	PublicInbox::MdirReader::maildir_each_eml("$d/md", sub {
-		push @md, $_[1];
+		push @md, $_[2];
 	});
 	is(scalar(@md), scalar(@mboxrd), 'got expected emails in Maildir');
 	@md = sort { ${$a->{bdy}} cmp ${$b->{bdy}} } @md;