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#!/usr/bin/perl -w
# Copyright (C) 2019-2021 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
# Generates NEWS, NEWS.atom, and NEWS.html files using release emails
# this uses unstable internal APIs of public-inbox, and this script
# needs to be updated if they change.
use strict;
use PublicInbox::Eml;
use PublicInbox::View;
use PublicInbox::Hval qw(fmt_ts);
use PublicInbox::MsgTime qw(msg_datestamp);
use PublicInbox::MID qw(mids mid_escape);
END { $INC{'Plack/Util.pm'} and warn "$0 should not have loaded Plack::Util\n" }
my $dst = shift @ARGV or die "Usage: $0 <NEWS|NEWS.atom|NEWS.html>";
# newest to oldest
my @releases = @ARGV;
my $dir = 'Documentation/RelNotes';
my $base_url = 'https://public-inbox.org/meta';
my $html_url = 'https://public-inbox.org/NEWS.html';
my $atom_url = 'https://public-inbox.org/NEWS.atom';
my $addr = 'meta@public-inbox.org';
my $latest = shift(@releases) or die 'no releases?';
my $mtime;
my $mime_latest = release2mime($latest, \$mtime);
my $tmp = "$dst+";
my $out;
if ($dst eq 'NEWS') {
open $out, '>:encoding(utf8)', $tmp or die;
mime2txt($out, $mime_latest);
for my $v (@releases) {
print $out "\n" or die;
mime2txt($out, release2mime($v));
}
} elsif ($dst eq 'NEWS.atom' || $dst eq 'NEWS.html') {
open $out, '>', $tmp or die;
my $ibx = My::MockObject->new(
description => 'public-inbox releases',
over => undef,
search => 1, # for WwwStream::html_top
base_url => "$base_url/",
);
$ibx->{-primary_address} = $addr;
my $ctx = {
ibx => $ibx,
-upfx => "$base_url/",
-hr => 1,
};
if ($dst eq 'NEWS.html') {
html_start($out, $ctx);
mime2html($out, $mime_latest, $ctx);
while (defined(my $v = shift(@releases))) {
mime2html($out, release2mime($v), $ctx);
}
html_end($out, $ctx);
} elsif ($dst eq 'NEWS.atom') {
my $astream = atom_start($out, $ctx, $mtime);
for my $v (reverse(@releases)) {
mime2atom($out, $astream, release2mime($v), $ctx);
}
mime2atom($out, $astream, $mime_latest, $ctx);
print $out '</feed>' or die;
} else {
die "BUG: Unrecognized $dst\n";
}
} else {
die "Unrecognized $dst\n";
}
close($out) or die;
utime($mtime, $mtime, $tmp) or die;
rename($tmp, $dst) or die;
exit 0;
sub release2mime {
my ($release, $mtime_ref) = @_;
my $f = "$dir/$release.eml";
open(my $fh, '<', $f) or die "open($f): $!";
my $mime = PublicInbox::Eml->new(\(do { local $/; <$fh> }));
# Documentation/include.mk relies on mtimes of each .eml file
# to trigger rebuild, so make sure we sync the mtime to the Date:
# header in the .eml
my $mtime = msg_datestamp($mime->header_obj);
utime($mtime, $mtime, $fh) or warn "futimes $f: $!";
$$mtime_ref = $mtime if $mtime_ref;
$mime;
}
sub mime2txt {
my ($out, $mime) = @_;
my $title = $mime->header('Subject');
$title =~ s/^\s*\[\w+\]\s*//g; # [ANNOUNCE] or [ANN]
my $dtime = msg_datestamp($mime->header_obj);
$title .= ' - ' . fmt_ts($dtime) . ' UTC';
print $out $title, "\n" or die;
my $uline = '=' x length($title);
print $out $uline, "\n\n" or die;
my $mid = mids($mime)->[0];
print $out 'Link: ', $base_url, '/', mid_escape($mid), "/\n\n" or die;
print $out $mime->body_str or die;
}
sub mime2html {
my ($out, $eml, $ctx) = @_;
my $smsg = $ctx->{smsg} = bless {}, 'PublicInbox::Smsg';
$smsg->populate($eml);
$ctx->{msgs} = [ 1 ]; # for <hr> in eml_entry
print $out PublicInbox::View::eml_entry($ctx, $eml) or die;
}
sub html_start {
my ($out, $ctx) = @_;
require PublicInbox::WwwStream;
$ctx->{www} = My::MockObject->new(style => '');
my $www_stream = PublicInbox::WwwStream::init($ctx);
print $out $www_stream->html_top, '<pre>' or die;
}
sub html_end {
for (@$PublicInbox::WwwStream::CODE_URL) {
print $out " git clone $_\n" or die;
}
print $out "</pre></body></html>\n" or die;
}
sub atom_start {
my ($out, $ctx, $mtime) = @_;
require PublicInbox::WwwAtomStream;
# WwwAtomStream stats this dir for mtime
my $astream = PublicInbox::WwwAtomStream->new($ctx);
delete $astream->{emit_header};
my $ibx = $ctx->{ibx};
my $title = PublicInbox::WwwAtomStream::title_tag($ibx->description);
my $updated = PublicInbox::WwwAtomStream::feed_updated($mtime);
print $out <<EOF or die;
<?xml version="1.0" encoding="us-ascii"?>
<feed
xmlns="http://www.w3.org/2005/Atom"
xmlns:thr="http://purl.org/syndication/thread/1.0">$title<link
rel="alternate"
type="text/html"
href="$html_url"/><link
rel="self"
href="$atom_url"/><id>$atom_url</id>$updated
EOF
$astream;
}
sub mime2atom {
my ($out, $astream, $eml, $ctx) = @_;
my $smsg = bless {}, 'PublicInbox::Smsg';
$smsg->populate($eml);
if (defined(my $str = $astream->feed_entry($smsg, $eml))) {
print $out $str or die;
}
}
package My::MockObject;
use strict;
our $AUTOLOAD;
sub new {
my ($class, %values) = @_;
bless \%values, $class;
}
sub AUTOLOAD {
my ($self) = @_;
my $attr = (split(/::/, $AUTOLOAD))[-1];
$self->{$attr};
}
1;
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