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# This is a simple IRC log to HTML converter.
# It accepts only logfiles in ilogger2 format, such as those provided by
# http://colabti.de/irclogger/irclogger_logs/perl6 (click on "raw text").
use v6;
# This is our class which calculates the colors of the nicks.
class Chat {
# 16 different colors should suffice.
my $POOL_SIZE = 16;
has @.pool;
has @.color;
# $id is the person id, $time is some kind of time, which is, in this class,
# not necessary. But I plan to add a subclass, which does evaluate $time.
method tick(Int $id, Int $time) {
# As we don't have submethod BUILD support yet, we have to initialize
# @.pool now.
@.color //= precalc_colors($POOL_SIZE);
# If we haven't allocated a color for $id...
unless defined @.color[$id] {
# Take one from the pool (pop), assign in to $id, and unshift it.
@.pool.unshift(@.color[$id] = @.pool.pop);
}
}
# Precalculate the pool.
sub precalc_colors(Int $num) {
my @colors = 0..$num-1;
@colors .= map: { [calc_color($^i, $num)] };
return @colors;
}
# calc_color copied from irclog2html.pl
# (http://freshmeat.net/projects/irclog2html.pl/), Copyleft (C) 2000-2002 Jeff
# Waugh, licensed under the Terms of the GNU General Public License, version 2
# or higher.
# calc_color expects the total number of colors to assign ($_[2]) and the color
# id ($_[1]) and returns a HTML-("#foreground", "#background")-pair with nice
# contrast etc.
# Take calc_color as a sub w/o errors.
sub calc_color(Int $i, Int $ncolors is copy) {
$ncolors = 1 if $ncolors == 0; # No division /0.
my $a = 0.95; # tune these for the starting and ending concentrations of R,G,B
my $b = 0.5;
my $rgb = [ [$a,$b,$b], [$b,$a,$b], [$b,$b,$a], [$a,$a,$b], [$a,$b,$a], [$b,$a,$a] ];
my $rgbmax = 125; # tune these two for the outmost ranges of colour depth
my $rgbmin = 240;
my $n = $i % (+$rgb);
my $m = $rgbmin + ($rgbmax - $rgbmin) * ($ncolors - $i) / $ncolors;
my @c = 0 .. 2;
@c .= map: { $rgb[$n][$_] * $m };
my $g = @c[0] * 0.3 + @c[1] * 0.59 + @c[2] * 0.11;
my $f = $g > 127 ?? "#000000" !! "#ffffff";
my $h = sprintf "#%02x%02x%02x", @c;
return [$f, $h];
}
}
# Stop if we weren't given a logfile to process.
@*ARGS or die "Usage: $*PROGRAM_NAME logfile\n";
my $chat = Chat.new;
my ($i, %nick2num) = (1);
# Pass I
my $fh = open @*ARGS[0] orelse die "Couldn't open \"@*ARGS[0]\": $!\n";
my $total = 0;
# We read the input file in and populate %nick2num.
# %nick2num is a Hash with nicknames as keys and IDs, suitable for $chat.tick,
# as values.
for $fh.lines {
my ($time, $nick, $type, $text) = parse_ilogger2($_) or next;
$time ~~ rx:Perl5/^(\d\d):(\d\d)$/;
my $utime = $0 * 60 + $1;
# We allocate a color only if $nick has said something (e.g. not, if he has
# only joined, etc.).
if $type eq "PRIVMSG"|"NOTICE" {
%nick2num{$nick} //= $i++;
$chat.tick(%nick2num{$nick}, $utime);
}
# If $nick has changes its nick, his color should stay.
my $nid = %nick2num{$nick};
%nick2num{$text} = %nick2num{$nick} if $type eq "NICK";
$total++;
}
close $fh;
# Pass I
$fh = open @*ARGS[0] orelse die "Couldn't open \"@*ARGS[0]\": $!\n";
# This is the main coderef which processes a logline and returns HTML.
my $process = -> $time, $nick, $type, $text {
my $htext;
given $type {
# PRIVMSG is the standard type of messages.
when "PRIVMSG" {
# If it was a /ME, we format it differently.
$htext = $text ~~ m:Perl5/^\x01(?:ACTION (.*))\x01$/
?? "$nick {qhtml $0}"
!! qhtml $text;
}
# Somebody set the topic.
when "TOPIC" {
$htext = "TOPIC: {qhtml $text}";
}
# It's some other event (JOIN, PART, etc.).
default {
$htext = chars $text ?? "$type: {qhtml $text}" !! $type;
}
}
# These are the colors of the nick.
# If we don't have a ID for $nick, $nick has never said anything, so we
# default to foreground #000 and background #fff.
my @nickc = %nick2num{$nick} ?? $chat.color[%nick2num{$nick}] !! ("#000", "#fff");
# Now we give our variables to the template.
tmpl_logline(
# Global foreground/background color
globfg => "black",
globbg =>
$type eq "PRIVMSG"
?? $text ~~ rx:Perl5/^\x01(?:ACTION)/ ?? "#eaeaea" !! "#f5f5f5"
!! "#dddddd",
# Nick foreground/background color
nickfg => @nickc[0],
nickbg => @nickc[1],
# Nick, time, type of the event
nick => $nick,
time => $time,
type => $type,
# Text
text => $htext,
# Sigil: One of "<" (user has left), ">", (user has joined"), " " (normal
# message), or "*" (/ME)
sigil =>
$type eq "QUIT" ?? qhtml "<" !!
$type eq "PART" ?? qhtml "<" !!
$type eq "JOIN" ?? qhtml ">" !!
$type eq "PRIVMSG"
?? ($text ~~ rx:Perl5/^\x01(?:ACTION)/ ?? qhtml "*" !! "")
!! qhtml "*",
);
};
# First, we output the header.
print tmpl_header("Log of «@*ARGS[0]»");
print tmpl_logstart();
# Then we iterate over $fh and process each logline.
for $fh.lines {
my ($time, $nick, $type, $text) = parse_ilogger2($_) or next;
print
$process(time => $time, type => $type, nick => $nick, text => $text);
}
# Finally, we output the footer.
print tmpl_logend();
print tmpl_end();
# This is the sub which expects a logline in ilogger2 format and returns
# ($time, $type, $nick, $text).
sub parse_ilogger2(Str $line is copy) {
$line ~~ rx:Perl5/^\[(\d\d:\d\d)\] (.*)$/ or
die "Couldn't parse line »{$line}«!";
my ($time, $rest) = @$/;
# We want to see if we progress.
$*ERR.say($rest);
given $rest {
when rx:Perl5/^\*\*\* ([^ ]+) has joined ([^ ]+)/ {
return ($time, $0, "JOIN", $1);
}
when rx:Perl5/^\*\*\* ([^ ]+) has left/ {
return ($time, $0, "PART");
}
when rx:Perl5/^\*\*\* ([^ ]+) has quit IRC \((.*)\)/ {
return ($time, $0, "QUIT", $1);
}
when rx:Perl5/^\*\*\* ([^ ]+) is now known as ([^ ]+)/ {
return ($time, $0, "NICK", $1);
}
when rx:Perl5/^<([^>]+)> (.*)/ {
return ($time, $0, "PRIVMSG", $1);
}
when rx:Perl5/^\* <([^>]+)> (.*)/ {
# We reformat /MEs as CTCP ACTIONs.
return ($time, $0, "PRIVMSG", "\x01(?:ACTION $1)\x01");
}
}
return;
}
# Quote HTML
# E.g. "a<b" → "a&lt;b"
sub qhtml (Str $str is copy) returns Str {
$str ~~ s:Perl5:g/([&<>"'-])/{ #"#--vim
$0 eq "&" ?? "&amp;" !!
$0 eq "<" ?? "&lt;" !!
$0 eq ">" ?? "&gt;" !!
$0 eq '"' ?? "&quot;" !!
$0 eq "'" ?? "&#39;" !!
$0 eq "-" ?? "&#45;" !! die
}/;
$str;
}
# Here-docs not yet implemented, so we have to use multi-line literals...
sub tmpl_header($title) {"
<?xml version=\"1.0\" encoding=\"utf-8\"?>
<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml11.dtd\">
<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"de\">
<head>
<title>{qhtml $title}</title>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />
<style>{'
body { font-family: Sans; background-color: white; color: black; margin: 0; }
h1 { background-color: #41347B; color: #52fe3b; font-family: monospace; margin: 0; text-align: center; font-size: 200%; }
h2 { background-color: #41347B; color: #52fe3b; font-family: monospace; margin: 0; text-align: center; font-size: 120%; }
h3 { font-size: 150%; margin: 0; }
h4 { font-size: 080%; margin: 0; }
a { text-decoration: none; }
a:hover { text-decoration: underline; }
h2 a { color: #00dd00; }
h2 a:hover { color: #00ff00; }
.sidebar a { color: #00dd00; }
.sidebar a:hover { color: #00ff00; }
.footer a { color: #00dd00; }
.footer a:hover { color: #00ff00; }
.text a { color: #0000dd; }
.text a:hover { color: #0000ff; }
.sidebar { display: none; position: absolute; right: 0; left: 85%; background-color: #41347B; color: white; }
.text { padding: 10px; }
.abstract { background-color: #7B59DE; border: 1px solid black; color: white; padding: 3px; }
pre { background-color: #DEDEFF; border: 1px solid black; color: black; padding: 3px; font-family: monospace; }
.footer { background-color: #41347B; margin: 0; padding: 3px; color: white; font-size: 80%; }
ul.nav { list-style-type: none; margin: 0; padding: 0; }
th, td { vertical-align: top; }
div.msg { overflow: auto; }
a.link_0, a.link_0:hover { color: gray; }
'}</style>
<link rel=\"stylesheet\" href=\"/style.css\" />
<script type=\"text/javascript\" src=\"/info.js\"></script>
</head>
<body>
<h1>IRC Log</h1>
<h2>generated by Pugs</h2>
<div class=\"text\">
<h3>{qhtml $title}</h3>
"}
sub tmpl_logstart() {'
<table style="width: 100%;">
<tr>
<th>From/To</th>
<th>@</th>
<th>&nbsp;</th>
<th style="width: 80%;">Text</th>
</tr>
'}
sub tmpl_logend() {'
</table>
'}
sub tmpl_logline(
Str $globfg, Str $globbg,
Str $nickbg, Str $nickfg,
Str $time,
Str $type,
Str $sigil,
Str $text,
Str $nick,
) {"
<tr style=\"color: $globfg; background-color: $globbg\">
<td style=\"background-color: $nickbg; color: $nickfg; text-align: center;\">
{qhtml $nick}
</td>
<td>{$time}</td>
<td title=\"$type\">{$sigil}</td>
<td>{$text}</td>
</tr>
"}
sub tmpl_end {'
</div>
<div class="footer">
Valid <a href="http://validator.w3.org/check/referer">XHTML 1.1</a>.<br />
Created using <a href="http://www.pugscode.org/">Pugs</a>, a <a
href="http://dev.perl.org/perl6/">Perl 6</a> compiler.
</div>
</body>
</html>
'}
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