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| | # Copyright (C) 2021 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
# front-end for the "lei export-kw" sub-command
package PublicInbox::LeiExportKw;
use strict;
use v5.10.1;
use parent qw(PublicInbox::IPC PublicInbox::LeiInput);
use Errno qw(EEXIST ENOENT);
sub export_kw_md { # LeiMailSync->each_src callback
my ($oidbin, $id, $self, $mdir) = @_;
my $sto_kw = $self->{lse}->oidbin_keywords($oidbin) or return;
my $bn = $$id;
my ($md_kw, $unknown, @try);
if ($bn =~ s/:2,([a-zA-Z]*)\z//) {
($md_kw, $unknown) = PublicInbox::MdirReader::flags2kw($1);
@try = qw(cur new);
} else {
$unknown = [];
@try = qw(new cur);
}
if ($self->{-merge_kw} && $md_kw) { # merging keywords is the default
@$sto_kw{keys %$md_kw} = values(%$md_kw);
}
$bn .= ':2,'.
PublicInbox::LeiToMail::kw2suffix([keys %$sto_kw], @$unknown);
return if $bn eq $$id;
my $dst = "$mdir/cur/$bn";
my $lei = $self->{lei};
for my $d (@try) {
my $src = "$mdir/$d/$$id";
# we use link(2) + unlink(2) since rename(2) may
# inadvertently clobber if the "uniquefilename" part wasn't
# actually unique.
if (link($src, $dst)) { # success
# unlink(2) may ENOENT from parallel invocation,
# ignore it, but not other serious errors
if (!unlink($src) and $! != ENOENT) {
$lei->child_error(1, "E: unlink($src): $!");
}
$lei->{sto}->ipc_do('lms_mv_src', "maildir:$mdir",
$oidbin, $id, $bn);
return; # success anyways if link(2) worked
} elsif ($! == EEXIST) { # lost race with lei/store?
return;
} elsif ($! != ENOENT) {
$lei->child_error(1, "E: link($src -> $dst): $!");
} # else loop @try
}
my $e = $!;
# both tries failed
my $oidhex = unpack('H*', $oidbin);
my $src = "$mdir/{".join(',', @try)."}/$$id";
$lei->child_error(1, "link($src -> $dst) ($oidhex): $e");
for (@try) { return if -e "$mdir/$_/$$id" }
$lei->{sto}->ipc_do('lms_clear_src', "maildir:$mdir", $id);
}
sub export_kw_imap { # LeiMailSync->each_src callback
my ($oidbin, $id, $self, $mic) = @_;
my $sto_kw = $self->{lse}->oidbin_keywords($oidbin) or return;
$self->{imap_mod_kw}->($self->{nwr}, $mic, $id, [ keys %$sto_kw ]);
}
# overrides PublicInbox::LeiInput::input_path_url
sub input_path_url {
my ($self, $input, @args) = @_;
my $lms = $self->{-lms_ro} //= $self->{lse}->lms;
if ($input =~ /\Amaildir:(.+)/i) {
my $mdir = $1;
require PublicInbox::LeiToMail; # kw2suffix
$lms->each_src($input, \&export_kw_md, $self, $mdir);
} elsif ($input =~ m!\Aimaps?://!i) {
my $uri = PublicInbox::URIimap->new($input);
my $mic = $self->{nwr}->mic_for_folder($uri);
$lms->each_src($$uri, \&export_kw_imap, $self, $mic);
$mic->expunge;
} else { die "BUG: $input not supported" }
my $wait = $self->{lei}->{sto}->ipc_do('done');
}
sub lei_export_kw {
my ($lei, @folders) = @_;
my $sto = $lei->_lei_store or return $lei->fail(<<EOM);
lei/store uninitialized, see lei-import(1)
EOM
my $lse = $sto->search;
my $lms = $lse->lms or return $lei->fail(<<EOM);
lei mail_sync uninitialized, see lei-import(1)
EOM
my $opt = $lei->{opt};
if (defined(my $all = $opt->{all})) { # --all=<local|remote>
$lms->group2folders($lei, $all, \@folders) or return;
} else {
my $err = $lms->arg2folder($lei, \@folders);
$lei->qerr(@{$err->{qerr}}) if $err->{qerr};
return $lei->fail($err->{fail}) if $err->{fail};
}
my $self = bless { lse => $lse }, __PACKAGE__;
$lei->{opt}->{'mail-sync'} = 1; # for prepare_inputs
$self->prepare_inputs($lei, \@folders) or return;
my $j = $opt->{jobs} // scalar(@{$self->{inputs}}) || 1;
if (my @ro = grep(!/\A(?:maildir|imaps?):/i, @folders)) {
return $lei->fail("cannot export to read-only folders: @ro");
}
my $m = $opt->{mode} // 'merge';
if ($m eq 'merge') { # default
$self->{-merge_kw} = 1;
} elsif ($m eq 'set') {
} else {
return $lei->fail(<<EOM);
--mode=$m not supported (`set' or `merge')
EOM
}
if (my $net = $lei->{net}) {
require PublicInbox::NetWriter;
$self->{nwr} = bless $net, 'PublicInbox::NetWriter';
$self->{imap_mod_kw} = $net->can($self->{-merge_kw} ?
'imap_add_kw' : 'imap_set_kw');
}
undef $lms; # for fork
my $ops = {};
$sto->write_prepare($lei);
$lei->{auth}->op_merge($ops, $self) if $lei->{auth};
(my $op_c, $ops) = $lei->workers_start($self, $j, $ops);
$lei->{wq1} = $self;
$lei->{-err_type} = 'non-fatal';
net_merge_all_done($self) unless $lei->{auth};
$lei->wait_wq_events($op_c, $ops); # net_merge_all_done if !{auth}
}
sub _complete_export_kw {
my ($lei, @argv) = @_;
my $sto = $lei->_lei_store or return;
my $lms = $sto->search->lms or return;
my $match_cb = $lei->complete_url_prepare(\@argv);
map { $match_cb->($_) } $lms->folders;
}
no warnings 'once';
*ipc_atfork_child = \&PublicInbox::LeiInput::input_only_atfork_child;
*net_merge_all_done = \&PublicInbox::LeiInput::input_only_net_merge_all_done;
1;
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