Source of common.inc.plp
<:
use 5.014;
use strict;
use utf8;
use warnings;
no warnings 'qw';
no warnings 'uninitialized';
use open ':std' => ':utf8';
use File::stat 'stat';
use HTTP::Date;
use Encode qw( decode_utf8 );
our $Dev;
sub Alert {
my ($html, $debug) = @_;
ref $html eq 'ARRAY' or $html = [$html];
my ($title, @lines) = @{$html};
my $body = "<h2>$title</h2>";
$body .= "\n<p>$_</p>" for @lines;
$body .= "\n<pre>$debug</pre>" if $Dev and $debug;
say "<div class=error>$body</div>\n";
}
sub Abort {
my ($html, $code, $debug) = @_;
unless ($PLP::sentheaders) {
$header{Status} = $code || 500;
}
elsif ($Dev) {
ref $html eq 'ARRAY' or $html = [$html];
push @{$html}, "Also failed to set HTTP status <q>$code</q>"
. " after output!";
}
Alert($html, $debug);
exit;
}
BEGIN {
require Time::HiRes;
our $Time = [Time::HiRes::gettimeofday()];
push @INC, '.';
our $Dev = $ENV{HTTP_HOST} =~ /\bdev\./;
}
our $Request //= decode_utf8($ENV{PATH_INFO} =~ s{^/}{}r);
our $style;
$header{content_type} = 'text/html; charset=utf-8';
sub stylesheet {
my @avail = qw( light dark circus mono red );
my %styles = map {$_ => $_} @avail;
if (defined( my $setstyle = $get{style} )) {
$style = $styles{ $setstyle };
eval {
require CGI::Cookie;
my $cookie = CGI::Cookie->new(
-name => 'style',
-value => $setstyle || '',
-path => '/',
-expires => $setstyle ? '+5y' : '-1d',
) or die "empty object returned\n";
AddCookie($cookie->as_string);
} or warn "Unable to create style cookie: $@";
}
my $setstyle = $style;
$style ||= $styles{$_} for $cookie{style} || ();
$style ||= $avail[0];
return $setstyle;
}
sub checkmodified {
my $lastmod = 0;
for (@_) {
my $mod = stat $_ or next;
$mod = $mod->mtime or next;
$lastmod = $mod if $mod gt $lastmod;
}
for ($ENV{HTTP_IF_MODIFIED_SINCE} || ()) {
next if str2time($_) < $lastmod;
$header{status} = '304 Same old';
exit;
}
$header{'Last-Modified'} = time2str($lastmod);
}
sub Data {
my ($filename) = @_;
my @data = eval {
!exists $get{f} and open my $cache, '<:raw', "data/$filename.json"
or return do "./$filename.inc.pl";
require JSON;
local $/;
return JSON::decode_json(readline $cache);
};
if ($@ or !@data or !$data[0]) {
die ['Table data not found', $@ || $!];
}
if (@data == 1 and ref $data[0] eq 'HASH' and not %{$data[0]}) {
die ['Table data missing'];
}
return wantarray ? @data : $data[0];
}
sub Html {
my ($meta) = @_;
unless ($meta->{nocache}) {
checkmodified(
$ENV{SCRIPT_FILENAME},
(grep { /\bShiar_/ } values %INC),
$meta->{data} ? @{ $meta->{data} } : (),
);
$header{'Cache-Control'} = 'max-age='.(24*60*60);
}
$meta->{charset} ||= 'utf-8';
$meta->{lang} ||= 'en';
ref $_ eq 'ARRAY' or $_ = [$_]
for grep {$_} $meta->{raw}, $meta->{description}, $meta->{keywords};
$header{content_type} = "text/html; charset=$meta->{charset}"
unless $PLP::sentheaders;
exit if $ENV{REQUEST_METHOD} eq 'HEAD';
unshift @{ $meta->{raw} }, (
'<link rel="stylesheet" type="text/css" media="all" href="/light.css?1.20">',
);
$meta->{stylesheet} = stylesheet();
if (my $img = $meta->{image}) {
my $proto = sprintf('http%s://', !!$ENV{HTTPS} && 's');
my $url = "$proto$ENV{HTTP_HOST}/$img";
push @{ $meta->{raw} }, (
qq(<meta property="og:image" content="$url" />),
);
}
my ($file) = $ENV{SCRIPT_FILENAME} =~ m{ ([^/]+) \.plp$ }x;
$meta->{canonical} //= "/$file" . ($Request ne '' && "/$Request");
if (my $url = $meta->{canonical}) {
$url = "https://sheet.shiar.nl$url";
push @{ $meta->{raw} }, qq(<link rel="canonical" href="$url" />);
}
PLP_START {
say '<!DOCTYPE html>';
my $rootattr = '';
$rootattr .= qq( class="s-$_") for $meta->{stylesheet} || ();
say qq(<html lang="$meta->{lang}"$rootattr>);
say '';
say '<head>';
say sprintf '<meta http-equiv="content-type" content="%s">', $_
for $header{content_type};
say sprintf '<title>%s</title>', $meta->{title};
say sprintf '<meta name="description" content="%s">', EscapeHTML($_)
for join(' ', @{ $meta->{description} // [] }) || ();
say sprintf '<meta name="keywords" content="%s">', EscapeHTML($_)
for join(', ', @{ $meta->{keywords} // [] }) || ();
say '<meta name="viewport" content="width=device-width, initial-scale=1">';
say '<link rel="icon" type="image/png" href="/clip.png">';
say for map { @{$_} } $meta->{raw} || ();
say '<meta name="robots" content="noindex">' if $Dev;
say '<script src="/prefer.js"></script>';
say '</head>';
say '';
say sprintf '<body id="%s">', $file;
printf '<p style="%s">beta</p>', join('; ',
'position: fixed',
'right: 1em',
'opacity: .5',
'border: 1ex solid red',
'border-width: 1ex 0',
'z-index: 1',
'background: inherit',
) if $Dev;
};
PLP_END {
print <<"EOT";
<p class="footer">
<a href="/" rel="start">sheet.shiar.nl</a>/$file.<a href="/source/$file.plp"
rel="source" title="Written in Perl">plp</a>
version <a href="http://git.shiar.nl/sheet.git/history/HEAD:/$file.plp"
rel="vcs-git" title="Git repository">$meta->{version}</a>
created by <a href="http://shiar.nl/" rel="author">Shiar</a> •
<a href="http://www.fsf.org/licensing/licenses/agpl-3.0.html"
title="Licensed under the GNU Affero General Public License, version 3"
rel="license">AGPLv3</a>
EOT
our $Time;
say sprintf '• %.3fs', Time::HiRes::tv_interval($Time) if $Dev and $Time;
say '</p>';
say '';
say '</html>';
};
}
BEGIN {
$PLP::ERROR = sub {
my ($message, $html) = @_;
if (ref $message) {
warn join ': ', @{$message};
$html = shift @{$message};
}
else {
warn $message;
$message = [];
}
unless ($PLP::sentheaders) {
Html({nocache => 1});
say '<h1>Page unavailable</h1>';
}
Alert("Fatal error: $html.", @{$message});
};
}
sub showlink {
my ($title, $href, $selected) = @_;
EscapeHTML($title);
return $title if not $href;
return "<strong>$title</strong>" if $selected;
return sprintf '<a href="%s">%s</a>', EscapeHTML($href), $title;
}