# Copyright (C) 2013, Eric Wong and all contributors # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) package PublicInbox::Feed; use strict; use warnings; use XML::Atom::SimpleFeed; use Email::MIME; use Email::Address; use URI::Escape qw/uri_escape/; use Encode qw/encode decode/; use Encode::MIME::Header; use CGI qw(escapeHTML); use POSIX qw(strftime); use Date::Parse qw(strptime); use constant DATEFMT => '%Y-%m-%dT%H:%M:%SZ'; use PublicInbox::View; use Mail::Thread; # main function sub generate { my ($class, $args) = @_; my $max = $args->{max} || 25; my $top = $args->{top}; # bool local $ENV{GIT_DIR} = $args->{git_dir}; my $feed_opts = get_feedopts($args); my $feed = XML::Atom::SimpleFeed->new( title => $feed_opts->{description} || "unnamed feed", link => $feed_opts->{url} || "http://example.com/", link => { rel => 'self', href => $feed_opts->{atomurl} || "http://example.com/atom", }, id => $feed_opts->{address} || 'public-inbox@example.com', updated => strftime(DATEFMT, gmtime), ); each_recent_blob($max, sub { my ($add) = @_; add_to_feed($feed_opts, $feed, $add, $top); }); $feed->as_string; } sub generate_html_index { my ($class, $args) = @_; my $max = $args->{max} || 50; my $top = $args->{top}; # bool local $ENV{GIT_DIR} = $args->{git_dir}; my $feed_opts = get_feedopts($args); my $title = escapeHTML($feed_opts->{description} || ""); my @messages; each_recent_blob($max, sub { my $str = `git cat-file blob $_[0]`; return 0 if $? != 0; my $simple = Email::Simple->new($str); $simple->body_set(""); # save some memory push @messages, $simple; 1; }); my $th = Mail::Thread->new(@messages); $th->thread; my @args = ( "$title" . '' . '
');
	push @args, $feed_opts->{midurl};
	dump_html_line($_, 0, \@args) for $th->rootset;
	$args[0] . '
'; } # private subs sub each_recent_blob { my ($max, $cb) = @_; # 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 $cmd = "git log --no-notes --no-color --raw -r --no-abbrev HEAD |"; my $pid = open my $log, $cmd or die "open `$cmd' pipe failed: $!\n"; my %deleted; my $nr = 0; foreach my $line (<$log>) { if ($line =~ /^:000000 100644 0{40} ([a-f0-9]{40})/) { my $add = $1; next if $deleted{$add}; $nr += $cb->($add); last if $nr >= $max; } elsif ($line =~ /^:100644 000000 ([a-f0-9]{40}) 0{40}/) { $deleted{$1} = 1; } } close $log; } # private functions below sub get_feedopts { my ($args) = @_; my $pi_config = $args->{pi_config}; my $listname = $args->{listname}; my $cgi = $args->{cgi}; my %rv; if ($pi_config && defined $listname && length $listname) { foreach my $key (qw(description address)) { $rv{$key} = $pi_config->get($listname, $key) || ""; } } my $url_base; if ($cgi) { my $cgi_url = $cgi->self_url; $url_base = $cgi_url; $url_base =~ s!/?(?:index|all)\.atom\.xml\z!!; $rv{atomurl} = $cgi_url; } else { $url_base = "http://example.com"; $rv{atomurl} = "$url_base/index.atom.xml"; } $rv{url} ||= "$url_base/"; $rv{midurl} = "$url_base/mid/"; $rv{fullurl} = "$url_base/full/"; \%rv; } sub utf8_header { my ($simple, $name) = @_; my $val = $simple->header($name); return "" unless defined $val; $val =~ tr/\t\r\n / /s; encode('utf8', decode('MIME-Header', $val)); } sub feed_date { my ($date) = @_; my @t = eval { strptime($date) }; scalar(@t) ? strftime(DATEFMT, @t) : 0; } # returns 0 (skipped) or 1 (added) sub add_to_feed { my ($feed_opts, $feed, $add, $top) = @_; # we can use git cat-file --batch if performance becomes a # problem, but I doubt it... my $str = `git cat-file blob $add`; return 0 if $? != 0; my $mime = Email::MIME->new($str); if ($top && $mime->header("In-Reply-To")) { return 0; } my $midurl = $feed_opts->{midurl} || 'http://example.com/mid/'; my $fullurl = $feed_opts->{fullurl} || 'http://example.com/full/'; my $content = PublicInbox::View->as_feed_entry($mime, $fullurl); defined($content) or return 0; my $mid = utf8_header($mime, "Message-ID") or return 0; $mid =~ s/\A\z//; my $subject = utf8_header($mime, "Subject") || ""; length($subject) or return 0; my $from = utf8_header($mime, "From") or return 0; my @from = Email::Address->parse($from); my $name = $from[0]->name; defined $name or $name = ""; my $email = $from[0]->address; defined $email or $email = ""; my $url = $midurl . uri_escape($mid); my $date = utf8_header($mime, "Date"); $date or return 0; $date = feed_date($date) or return 0; $feed->add_entry( author => { name => $name, email => $email }, title => $subject, updated => $date, content => { type => "html", content => $content }, link => $url, id => $add, ); 1; } sub dump_html_line { my ($self, $level, $args) = @_; # args => [ $html, $midurl ] $args->[0] .= (' ' x $level); if ($self->message) { my $simple = $self->message; my $subj = utf8_header($simple, "Subject"); my $mid = utf8_header($simple, "Message-ID"); $mid =~ s/\A\z//; my $url = $args->[1] . uri_escape($mid); my $from = utf8_header($simple, "From"); my @from = Email::Address->parse($from); $from = $from[0]->name; (defined($from) && length($from)) or $from = $from[0]->address; $from = escapeHTML($from); $subj = escapeHTML($subj); $args->[0] .= "`-> $subj $from\n"; } else { $args->[0] .= "[ Message not available ]\n"; } dump_html_line($self->child, $level+1, $args) if $self->child; dump_html_line($self->next, $level, $args) if $self->next; } 1;