IkiWiki/Plugin/smiley.pm



#!/usr/bin/perl
package IkiWiki::Plugin::smiley;

use warnings;
use strict;
use IkiWiki;

my %smileys;
my $smiley_regexp;

sub import { #{{{
    hook(type => "filter", id => "smiley", call => \&filter);
} # }}}

sub build_regexp () { #{{{
    my $list=readfile(srcfile("smileys.mdwn"));
    while ($list =~ m/^\s*\*\s+\\([^\s]+)\s+\[\[([^]]+)\]\]/mg) {
        $smileys{$1}=$2;
    }
    
    if (! %smileys) {
        debug(gettext("failed to parse any smileys"));
        $smiley_regexp='';
        return;
    }
    
    # sort and reverse so that substrings come after longer strings
    # that contain them, in most cases.
    $smiley_regexp='('.join('|', map { quotemeta }
        reverse sort keys %smileys).')';
    #debug($smiley_regexp);
} #}}}

sub filter (@) { #{{{
    my %params=@_;
    
    build_regexp() unless defined $smiley_regexp;
    $params{content} =~ s{(?:^|(?<=\s))(\\?)$smiley_regexp(?:(?=\s)|$)}{
        $1 ? $2 : htmllink($params{page}, $params{page}, $smileys{$2}, linktext => $2)
    }egs if length $smiley_regexp;

    return $params{content};
} # }}}

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