color: New plugin from ptecza.

1 files changed, 69 insertions, 0 deletions

diff --git a/IkiWiki/Plugin/color.pm b/IkiWiki/Plugin/color.pm
new file mode 100644
index 000000000..ac702ff02
--- /dev/null
+++ b/IkiWiki/Plugin/color.pm
@@ -0,0 +1,69 @@
+#!/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