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#!/usr/bin/perl
use strict;
use warnings;
package IkiWiki::Plugin::highlight;
use IkiWiki '3.00';
use Syntax::Highlight::Engine::Kate;
# variables {{{
my %hl_args = (
substitutions => { },
format_table => {
Alert => ["<span class='synAlert'>", "</span>"],
BaseN => ["<span class='synBaseN'>", "</span>"],
BString => ["<span class='synBString'>", "</span>"],
Char => ["<span class='synChar'>", "</span>"],
Comment => ["<span class='synComment'>", "</span>"],
DataType => ["<span class='synDataType'>", "</span>"],
DecVal => ["<span class='synDecVal'>", "</span>"],
Error => ["<span class='synError'>", "</span>"],
Float => ["<span class='synFloat'>", "</span>"],
Function => ["<span class='synFunction'>", "</span>"],
IString => ["<span class='synIString'>", "</span>"],
Keyword => ["<span class='synKeyword'>", "</span>"],
Normal => ["", "" ],
Operator => ["<span class='synOperator'>", "</span>"],
Others => ["<span class='synOthers'>", "</span>"],
RegionMarker => ["<span class='synRegionMarker'>", "</span>"],
Reserved => ["<span class='synReserved'>", "</span>"],
String => ["<span class='synString'>", "</span>"],
Variable => ["<span class='synVariable'>", "</span>"],
Warning => ["<span class='synWarning'>", "</span>"],
},
);
my %syntaxes;
# }}}
sub import { # {{{
hook(type => 'sanitize', id => __PACKAGE__, call => \&sanitize, first => 1);
} # }}}
sub sanitize { # {{{
my %args = @_;
my $content = '';
my $in_code = 0;
for my $line (split /^/m, $args{content}) {
if ($in_code) {
if ($line =~ s{(</code></pre>.*)}{}s) {
my $rest_line = $1;
$code_block .= $line;
$content .= highlight($code_block) . $rest_line;
$code_block = '';
$in_code = 0;
}
else {
$code_block .= $line;
}
}
else {
if ($line =~ s{(.*<pre><code>)}{}s) {
$content .= $1;
$code_block .= $line;
$in_code = 1;
}
else {
$content .= $line;
}
}
}
$content .= $code_block;
return $content;
} # }}}
sub highlight { # {{{
my ($code_block) = @_;
my $filetype = guess_filetype($code_block);
return unless $filetype;
my $hl = Syntax::Highlight::Engine::Kate->new(
language => $filetype, %hl_args
);
%syntaxes ||= map { lc($_) => $hl->syntaxes->{$_} } keys %$hl->syntaxes;
return $hl->highlightText($code_block);
} # }}}
sub guess_filetype { # {{{
my ($code_block) = @_;
my ($first_line) = split /\n/, $code_block;
if ($first_line =~ /^#!(\w+)/) {
return $syntaxes{$1};
}
return;
} # }}}
1;
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