aboutsummaryrefslogtreecommitdiff
path: root/IkiWiki/Plugin/color.pm
blob: ac702ff026052e34b780ec380cf3cc048b7443bc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
#!/usr/bin/perl
# Ikiwiki text colouring plugin
# Paweł‚ Tęcza <ptecza@net.icm.edu.pl>
package IkiWiki::Plugin::color;

use warnings;
use strict;
use IkiWiki 2.00;

sub import { #{{{
	hook(type => "preprocess", id => "color", call => \&preprocess);
	hook(type => "format",     id => "color", call => \&format);
} #}}}

sub preserve_style ($$$) { #{{{
	my $foreground = shift;
	my $background = shift;
	my $text       = shift;

	$foreground = defined $foreground ? lc($foreground) : '';
	$background = defined $background ? lc($background) : '';
	$text       = '' unless (defined $text);

	# Validate colors. Only color name or color code are valid.
	$foreground = '' unless ($foreground &&
				($foreground =~ /^[a-z]+$/ || $foreground =~ /^#[0-9a-f]{3,6}$/));
	$background = '' unless ($background &&
				($background =~ /^[a-z]+$/ || $background =~ /^#[0-9a-f]{3,6}$/));

	my $preserved = '';
	$preserved .= '<span class="color">';
	$preserved .= 'color: '.$foreground if ($foreground);
	$preserved .= '; ' if ($foreground && $background);
	$preserved .= 'background-color: '.$background if ($background);
	$preserved .= '</span>';
	$preserved .= '<span class="colorend">'.$text.'</span>';
	
	return $preserved;

} #}}}

sub replace_preserved_style ($) { #{{{
	my $content = shift;

	$content =~ s!<span class="color">((color: ([a-z]+|\#[0-9a-f]{3,6})?)?((; )?(background-color: ([a-z]+|\#[0-9a-f]{3,6})?)?)?)</span>!<span class="color" style="$1">!g;
	$content =~ s!<span class="colorend">!!g;

	return $content;
} #}}}

sub preprocess (@) { #{{{
	my %params = @_;

	# Preprocess the text to expand any preprocessor directives
	# embedded inside it.
	$params{text} = IkiWiki::preprocess($params{page}, $params{destpage},
				IkiWiki::filter($params{page}, $params{destpage}, $params{text}));

	return preserve_style($params{foreground}, $params{background}, $params{text});
} #}}}

sub format (@) { #{{{
	my %params = @_;

	$params{content} = replace_preserved_style($params{content});
	return $params{content};	
} #}}}

1