#
# Used for generating Atom feeds for web-accessible mailing list archives.
package PublicInbox::Feed;
use strict;
use warnings;
use PublicInbox::MIME;
use PublicInbox::View;
use PublicInbox::WwwAtomStream;
# main function
sub generate {
my ($ctx) = @_;
my @paths;
each_recent_blob($ctx, sub { push @paths, $_[0] });
return _no_thread() unless @paths;
my $ibx = $ctx->{-inbox};
PublicInbox::WwwAtomStream->response($ctx, 200, sub {
while (my $path = shift @paths) {
my $mime = do_cat_mail($ibx, $path) or next;
return $mime;
}
});
}
sub generate_thread_atom {
my ($ctx) = @_;
my $mid = $ctx->{mid};
my $res = $ctx->{srch}->get_thread($mid);
return _no_thread() unless $res->{total};
my $ibx = $ctx->{-inbox};
my $html_url = $ibx->base_url($ctx->{env});
$html_url .= PublicInbox::Hval->new_msgid($mid)->{href};
$ctx->{-html_url} = $html_url;
my $msgs = $res->{msgs};
PublicInbox::WwwAtomStream->response($ctx, 200, sub {
while (my $msg = shift @$msgs) {
$msg = $ibx->msg_by_smsg($msg) and
return PublicInbox::MIME->new($msg);
}
});
}
sub generate_html_index {
my ($ctx) = @_;
# if the 'r' query parameter is given, it is a legacy permalink
# which we must continue supporting:
my $qp = $ctx->{qp};
if ($qp && !$qp->{r} && $ctx->{srch}) {
return PublicInbox::View::index_topics($ctx);
}
my $env = $ctx->{env};
my $url = $ctx->{-inbox}->base_url($env) . 'new.html';
my $qs = $env->{QUERY_STRING};
$url .= "?$qs" if $qs ne '';
[302, [ 'Location', $url, 'Content-Type', 'text/plain'],
[ "Redirecting to $url\n" ] ];
}
sub new_html {
my ($ctx) = @_;
my @paths;
my (undef, $last) = each_recent_blob($ctx, sub {
my ($path, $commit, $ts, $u, $subj) = @_;
$ctx->{first} ||= $commit;
push @paths, $path;
});
if (!@paths) {
return [404, ['Content-Type', 'text/plain'],
["No messages, yet\n"] ];
}
$ctx->{-html_tip} = '';
$ctx->{-upfx} = '';
$ctx->{-hr} = 1;
PublicInbox::WwwStream->response($ctx, 200, sub {
while (my $path = shift @paths) {
my $m = do_cat_mail($ctx->{-inbox}, $path) or next;
my $more = scalar @paths;
my $s = PublicInbox::View::index_entry($m, $ctx, $more);
return $s;
}
new_html_footer($ctx, $last);
});
}
# private subs
sub _no_thread () {
[404, ['Content-Type', 'text/plain'], ["No feed found for thread\n"]];
}
sub new_html_footer {
my ($ctx, $last) = @_;
my $qp = delete $ctx->{qp} or return;
my $old_r = $qp->{r};
my $latest = '';
my $next = ' ';
if ($last) {
$next = qq!next!;
}
if ($old_r) {
$latest = qq! latest!;
}
"
page: $next$latest
";
}
sub each_recent_blob {
my ($ctx, $cb) = @_;
my $max = $ctx->{-inbox}->{feedmax};
my $hex = '[a-f0-9]';
my $addmsg = qr!^:000000 100644 \S+ \S+ A\t(${hex}{2}/${hex}{38})$!;
my $delmsg = qr!^:100644 000000 \S+ \S+ D\t(${hex}{2}/${hex}{38})$!;
my $refhex = qr/(?:HEAD|${hex}{4,40})(?:~\d+)?/;
my $qp = $ctx->{qp};
# revision ranges may be specified
my $range = 'HEAD';
my $r = $qp->{r} if $qp;
if ($r && ($r =~ /\A(?:$refhex\.\.)?$refhex\z/o)) {
$range = $r;
}
# get recent messages
# we could use git log -z, but, we already know ssoma will not
# leave us with filenames with spaces in them..
my $log = $ctx->{-inbox}->git->popen(qw/log
--no-notes --no-color --raw -r
--abbrev=16 --abbrev-commit/,
"--format=%h%x00%ct%x00%an%x00%s%x00",
$range);
my %deleted; # only an optimization at this point
my $last;
my $nr = 0;
my ($cur_commit, $first_commit, $last_commit);
my ($ts, $subj, $u);
local $/ = "\n";
while (defined(my $line = <$log>)) {
if ($line =~ /$addmsg/o) {
my $add = $1;
next if $deleted{$add}; # optimization-only
$cb->($add, $cur_commit, $ts, $u, $subj) and $nr++;
if ($nr >= $max) {
$last = 1;
last;
}
} elsif ($line =~ /$delmsg/o) {
$deleted{$1} = 1;
} elsif ($line =~ /^${hex}{7,40}/o) {
($cur_commit, $ts, $u, $subj) = split("\0", $line);
unless (defined $first_commit) {
$first_commit = $cur_commit;
}
}
}
if ($last) {
local $/ = "\n";
while (my $line = <$log>) {
if ($line =~ /^(${hex}{7,40})/o) {
$last_commit = $1;
last;
}
}
}
# for pagination
($first_commit, $last_commit);
}
sub do_cat_mail {
my ($ibx, $path) = @_;
my $mime = eval { $ibx->msg_by_path($path) } or return;
PublicInbox::MIME->new($mime);
}
1;