# Copyright (C) 2016-2018 all contributors # License: AGPL-3.0+ package PublicInbox::WwwText; use strict; use warnings; use PublicInbox::Linkify; use PublicInbox::WwwStream; use PublicInbox::Hval qw(ascii_html); our $QP_URL = 'https://xapian.org/docs/queryparser.html'; our $WIKI_URL = 'https://en.wikipedia.org/wiki'; # /$INBOX/_/text/$KEY/ # KEY may contain slashes # For now, "help" is the only supported $KEY sub get_text { my ($ctx, $key) = @_; my $code = 200; $key = 'help' if !defined $key; # this 302s to _/text/help/ # get the raw text the same way we get mboxrds my $raw = ($key =~ s!/raw\z!!); my $have_tslash = ($key =~ s!/\z!!) if !$raw; my $txt = ''; if (!_default_text($ctx, $key, \$txt)) { $code = 404; $txt = "404 Not Found ($key)\n"; } if ($raw) { return [ $code, [ 'Content-Type', 'text/plain', 'Content-Length', bytes::length($txt) ], [ $txt ] ] } # enforce trailing slash for "wget -r" compatibility if (!$have_tslash && $code == 200) { my $url = $ctx->{-inbox}->base_url($ctx->{env}); $url .= "_/text/$key/"; return [ 302, [ 'Content-Type', 'text/plain', 'Location', $url ], [ "Redirecting to $url\n" ] ]; } # Follow git commit message conventions, # first line is the Subject/title my ($title) = ($txt =~ /\A([^\n]*)/s); _do_linkify($txt); $ctx->{-title_html} = ascii_html($title); my $nslash = ($key =~ tr!/!/!); $ctx->{-upfx} = '../../../' . ('../' x $nslash); PublicInbox::WwwStream->response($ctx, $code, sub { my ($nr, undef) = @_; $nr == 1 ? '
'.$txt.'
' : undef }); } sub _do_linkify { my $l = PublicInbox::Linkify->new; $_[0] = $l->linkify_2(ascii_html($l->linkify_1($_[0]))); } sub _srch_prefix ($$) { my ($srch, $txt) = @_; my $pad = 0; my $htxt = ''; my $help = $srch->help; my $i; for ($i = 0; $i < @$help; $i += 2) { my $pfx = $help->[$i]; my $n = length($pfx); $pad = $n if $n > $pad; $htxt .= $pfx . "\0"; $htxt .= $help->[$i + 1]; $htxt .= "\f\n"; } $pad += 2; my $padding = ' ' x ($pad + 8); $htxt =~ s/^/$padding/gms; $htxt =~ s/^$padding(\S+)\0/" $1". (' ' x ($pad - length($1)))/egms; $htxt =~ s/\f\n/\n/gs; $$txt .= $htxt; 1; } sub _default_text ($$$) { my ($ctx, $key, $txt) = @_; return if $key ne 'help'; # TODO more keys? my $ibx = $ctx->{-inbox}; my $base_url = $ibx->base_url($ctx->{env}); $$txt .= "public-inbox help for $base_url\n"; $$txt .= <') into the URL. Forward slash ('/') characters in the Message-IDs need to be escaped as "%2F" (without quotes). Thus, it is possible to retrieve any message by its Message-ID by going to: $base_url/ (without the '<' or '>') Message-IDs are described at: $WIKI_URL/Message-ID EOF # n.b. we use the Xapian DB for any regeneratable, # order-of-arrival-independent data. my $srch = $ibx->search; if ($srch) { $$txt .= </T/#u Loads the thread belonging to the given in flat chronological order. The "#u" anchor focuses the browser on the given . * $base_url/t/#u Loads the thread belonging to the given in threaded order with nesting. For deep threads, this requires a wide display or horizontal scrolling. Both of these HTML endpoints are suitable for offline reading using the thread overview at the bottom of each page. Users of feed readers may follow a particular thread using: * $base_url/t.atom Which loads the thread in Atom Syndication Standard described at Wikipedia and RFC4287: $WIKI_URL/Atom_(standard) https://tools.ietf.org/html/rfc4287 Atom Threading Extensions (RFC4685) is supported: https://tools.ietf.org/html/rfc4685 Finally, the gzipped mbox for a thread is available for downloading and importing into your favorite mail client: * $base_url/t.mbox.gz We use the mboxrd variant of the mbox format described at: $WIKI_URL/Mbox contact ------- This help text is maintained by public-inbox developers reachable via plain-text email at: meta\@public-inbox.org EOF # TODO: support admin contact info in ~/.public-inbox/config } 1; } 1;