-# 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)
-# Streaming interface for formatting messages as an mbox
+# Streaming interface for formatting messages as an mboxrd
package PublicInbox::Mbox;
use strict;
use warnings;
-use PublicInbox::MID qw/mid_clean mid_compressed mid2path/;
-use Fcntl qw(SEEK_SET);
+use PublicInbox::MID qw/mid2path/;
+require Email::Simple;
sub thread_mbox {
- my ($ctx, $srch) = @_;
- my $mid = mid_compressed($ctx->{mid});
- my $res = $srch->get_thread($mid);
- my $msgs = delete $res->{msgs};
- require PublicInbox::GitCatFile;
- require Email::Simple;
- my $git = PublicInbox::GitCatFile->new($ctx->{git_dir});
+ my ($ctx, $srch, $sfx) = @_;
+ sub {
+ my ($response) = @_; # Plack callback
+ emit_mbox($response, $ctx, $srch, $sfx);
+ }
+}
+sub emit1 {
+ my $simple = Email::Simple->new(pop);
sub {
- my ($res) = @_; # Plack callback
- my $w = $res->([200, [ 'Content-Type' => 'text/plain' ] ]);
- while (defined(my $smsg = shift @$msgs)) {
- my $msg = eval {
- my $path = 'HEAD:' . mid2path($smsg->mid);
- Email::Simple->new($git->cat_file($path));
- };
- emit($w, $msg) if $msg;
- }
+ my ($response) = @_;
+ # single message should be easily renderable in browsers
+ my $fh = $response->([200, ['Content-Type'=>'text/plain']]);
+ emit_msg($fh, $simple);
+ $fh->close;
}
}
-sub emit {
+sub emit_msg {
my ($fh, $simple) = @_; # Email::Simple object
+ my $header_obj = $simple->header_obj;
# drop potentially confusing headers, ssoma already should've dropped
# Lines and Content-Length
foreach my $d (qw(Lines Content-Length Status)) {
- $simple->header_set($d);
+ $header_obj->header_set($d);
}
- my $buf = $simple->header_obj->as_string;
+ my $buf = $header_obj->as_string;
unless ($buf =~ /\AFrom /) {
- $fh->write("From a\@a Thu Jan 1 00:00:00 1970\n");
+ $fh->write("From mboxrd\@z Thu Jan 1 00:00:00 1970\n");
}
$fh->write($buf .= $simple->crlf);
$buf = $simple->body;
$simple->body_set('');
- $buf =~ s/^(From )/>$1/gm;
+
+ # mboxrd quoting style
+ # ref: http://www.qmail.org/man/man5/mbox.html
+ $buf =~ s/^(>*From )/>$1/gm;
+
$buf .= "\n" unless $buf =~ /\n\z/s;
$fh->write($buf);
}
+sub emit_mbox {
+ my ($response, $ctx, $srch, $sfx) = @_;
+ my $type = 'mbox';
+ if ($sfx) {
+ eval { require IO::Compress::Gzip };
+ return need_gzip($response) if $@;
+ $type = 'gzip';
+ }
+
+ # http://www.iana.org/assignments/media-types/application/gzip
+ # http://www.iana.org/assignments/media-types/application/mbox
+ my $fh = $response->([200, ['Content-Type' => "application/$type"]]);
+ $fh = PublicInbox::MboxGz->new($fh) if $sfx;
+
+ require PublicInbox::GitCatFile;
+ my $mid = $ctx->{mid};
+ my $git = PublicInbox::GitCatFile->new($ctx->{git_dir});
+ my %opts = (offset => 0);
+ my $nr;
+ do {
+ my $res = $srch->get_thread($mid, \%opts);
+ my $msgs = $res->{msgs};
+ $nr = scalar @$msgs;
+ while (defined(my $smsg = shift @$msgs)) {
+ my $msg = eval {
+ my $p = 'HEAD:'.mid2path($smsg->mid);
+ Email::Simple->new($git->cat_file($p));
+ };
+ emit_msg($fh, $msg) if $msg;
+ }
+
+ $opts{offset} += $nr;
+ } while ($nr > 0);
+
+ $fh->close;
+}
+
+sub need_gzip {
+ my $fh = $_[0]->([501, ['Content-Type' => 'text/html']]);
+ my $title = 'gzipped mbox not available';
+ $fh->write(<<EOF);
+<html><head><title>$title</title><body><pre>$title
+The administrator needs to install the IO::Compress::Gzip Perl module
+to support gzipped mboxes.
+<a href="../">Return to index</a></pre></body></html>
+EOF
+ $fh->close;
+}
+
+1;
+
+# fh may not be a proper IO, so we wrap the write and close methods
+# to prevent IO::Compress::Gzip from complaining
+package PublicInbox::MboxGz;
+use strict;
+use warnings;
+use fields qw(gz fh buf);
+
+sub new {
+ my ($class, $fh) = @_;
+ my $self = fields::new($class);
+ my $buf;
+ $self->{buf} = \$buf;
+ $self->{gz} = IO::Compress::Gzip->new(\$buf);
+ $self->{fh} = $fh;
+ $self;
+}
+
+sub _flush_buf {
+ my ($self) = @_;
+ if (defined ${$self->{buf}}) {
+ $self->{fh}->write(${$self->{buf}});
+ ${$self->{buf}} = undef;
+ }
+}
+
+sub write {
+ $_[0]->{gz}->write($_[1]);
+ _flush_buf($_[0]);
+}
+
+sub close {
+ my ($self) = @_;
+ $self->{gz}->close;
+ _flush_buf($self);
+ $self->{fh}->close;
+}
+
1;