# Copyright (C) 2021 all contributors
# License: AGPL-3.0+
# parent class for LeiImport, LeiConvert
package PublicInbox::LeiInput;
use strict;
use v5.10.1;
sub check_input_format ($;$) {
my ($lei, $files) = @_;
my $opt_key = 'in-format';
my $fmt = $lei->{opt}->{$opt_key};
if (!$fmt) {
my $err = $files ? "regular file(s):\n@$files" : '--stdin';
return $lei->fail("--$opt_key unset for $err");
}
require PublicInbox::MboxLock if $files;
require PublicInbox::MboxReader;
return 1 if $fmt eq 'eml';
# XXX: should this handle {gz,bz2,xz}? that's currently in LeiToMail
PublicInbox::MboxReader->reads($fmt) or
return $lei->fail("--$opt_key=$fmt unrecognized");
1;
}
# import a single file handle of $name
# Subclass must define ->input_eml_cb and ->input_mbox_cb
sub input_fh {
my ($self, $ifmt, $fh, $name, @args) = @_;
if ($ifmt eq 'eml') {
require PublicInbox::Eml;
my $buf = do { local $/; <$fh> } //
return $self->{lei}->child_error(1 << 8, <<"");
error reading $name: $!
# mutt pipes single RFC822 messages with a "From " line,
# but no Content-Length or "From " escaping.
# "git format-patch" also generates such files by default.
$buf =~ s/\A[\r\n]*From [^\r\n]*\r?\n//s;
$self->input_eml_cb(PublicInbox::Eml->new(\$buf), @args);
} else {
# prepare_inputs already validated $ifmt
my $cb = PublicInbox::MboxReader->reads($ifmt) //
die "BUG: bad fmt=$ifmt";
$cb->(undef, $fh, $self->can('input_mbox_cb'), $self, @args);
}
}
sub input_stdin {
my ($self) = @_;
my $in = delete $self->{0} or return;
$self->input_fh($self->{lei}->{opt}->{'in-format'}, $in, '');
}
sub input_path_url {
my ($self, $input, @args) = @_;
my $lei = $self->{lei};
my $ifmt = lc($lei->{opt}->{'in-format'} // '');
# TODO auto-detect?
if ($input =~ m!\Aimaps?://!i) {
$lei->{net}->imap_each($input, $self->can('input_net_cb'),
$self, @args);
return;
} elsif ($input =~ m!\A(?:nntps?|s?news)://!i) {
$lei->{net}->nntp_each($input, $self->can('input_net_cb'),
$self, @args);
return;
}
$input =~ s!\A([a-z0-9]+):!!i and $ifmt = lc($1);
if (-f $input) {
my $m = $lei->{opt}->{'lock'} // ($ifmt eq 'eml' ? ['none'] :
PublicInbox::MboxLock->defaults);
my $mbl = PublicInbox::MboxLock->acq($input, 0, $m);
$self->input_fh($ifmt, $mbl->{fh}, $input, @args);
} elsif (-d _ && (-d "$input/cur" || -d "$input/new")) {
return $lei->fail(<can('input_maildir_cb'),
$self, @args);
} else {
$lei->fail("$input unsupported (TODO)");
}
}
sub prepare_inputs { # returns undef on error
my ($self, $lei, $inputs) = @_;
my $in_fmt = $lei->{opt}->{'in-format'};
if ($lei->{opt}->{stdin}) {
@$inputs and return
$lei->fail("--stdin and @$inputs do not mix");
check_input_format($lei) or return;
$self->{0} = $lei->{0};
}
my $net = $lei->{net}; # NetWriter may be created by l2m
my $fmt = $lei->{opt}->{'in-format'};
my (@f, @d);
# e.g. Maildir:/home/user/Mail/ or imaps://example.com/INBOX
for my $input (@$inputs) {
my $input_path = $input;
if ($input =~ m!\A(?:imaps?|nntps?|s?news)://!i) {
require PublicInbox::NetReader;
$net //= PublicInbox::NetReader->new;
$net->add_url($input);
} elsif ($input_path =~ s/\A([a-z0-9]+)://is) {
my $ifmt = lc $1;
if (($in_fmt // $ifmt) ne $ifmt) {
return $lei->fail(<<"");
--in-format=$in_fmt and `$ifmt:' conflict
}
if (-f $input_path) {
require PublicInbox::MboxLock;
require PublicInbox::MboxReader;
PublicInbox::MboxReader->reads($ifmt) or return
$lei->fail("$ifmt not supported");
} elsif (-d _) {
require PublicInbox::MdirReader;
$ifmt eq 'maildir' or return
$lei->fail("$ifmt not supported");
} else {
return $lei->fail("Unable to handle $input");
}
} elsif (-f $input) { push @f, $input }
elsif (-d _) { push @d, $input }
else { return $lei->fail("Unable to handle $input") }
}
if (@f) { check_input_format($lei, \@f) or return }
if (@d) { # TODO: check for MH vs Maildir, here
require PublicInbox::MdirReader;
}
if ($net) {
if (my $err = $net->errors) {
return $lei->fail($err);
}
$net->{quiet} = $lei->{opt}->{quiet};
require PublicInbox::LeiAuth;
$lei->{auth} //= PublicInbox::LeiAuth->new;
$lei->{net} //= $net;
}
$self->{inputs} = $inputs;
}
sub input_only_atfork_child {
my ($self) = @_;
my $lei = $self->{lei};
$lei->_lei_atfork_child;
PublicInbox::IPC::ipc_atfork_child($self);
$lei->{auth}->do_auth_atfork($self) if $lei->{auth};
undef;
}
1;