101 lines
2.2 KiB
Perl
101 lines
2.2 KiB
Perl
#!/usr/bin/perl
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package IkiWiki::Plugin::smiley;
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use warnings;
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use strict;
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use IkiWiki 3.00;
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my %smileys;
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my $smiley_regexp;
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sub import {
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add_underlay("smiley");
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hook(type => "getsetup", id => "smiley", call => \&getsetup);
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hook(type => "sanitize", id => "smiley", call => \&sanitize);
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}
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sub getsetup () {
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return
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plugin => {
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safe => 1,
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# force a rebuild because turning it off
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# removes the smileys, which would break links
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rebuild => 1,
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},
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}
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sub build_regexp () {
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my $list=readfile(srcfile("smileys.mdwn"));
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while ($list =~ m/^\s*\*\s+\\\\([^\s]+)\s+\[\[([^]]+)\]\]/mg) {
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my $smiley=$1;
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my $file=$2;
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$smileys{$smiley}=$file;
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# Add a version with < and > escaped, since they probably
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# will be (by markdown) by the time the sanitize hook runs.
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$smiley=~s/</</g;
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$smiley=~s/>/>/g;
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$smileys{$smiley}=$file;
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}
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if (! %smileys) {
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debug(gettext("failed to parse any smileys"));
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$smiley_regexp='';
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return;
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}
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# sort and reverse so that substrings come after longer strings
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# that contain them, in most cases.
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$smiley_regexp='('.join('|', map { quotemeta }
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reverse sort keys %smileys).')';
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#debug($smiley_regexp);
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}
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sub sanitize (@) {
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my %params=@_;
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build_regexp() unless defined $smiley_regexp;
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$_=$params{content};
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return $_ unless length $smiley_regexp;
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MATCH: while (m{(?:^|(?<=\s|>))(\\?)$smiley_regexp(?:(?=\s|<)|$)}g) {
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my $escape=$1;
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my $smiley=$2;
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my $epos=$-[1];
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my $spos=$-[2];
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# Smilies are not allowed inside <pre> or <code>.
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# For each tag in turn, match forward to find the next <tag>
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# or </tag> after the smiley.
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my $pos=pos;
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foreach my $tag ("pre", "code") {
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if (m/<(\/)?\s*$tag\s*>/isg && defined $1) {
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# </tag> found first, so the smiley is
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# inside the tag, so do not expand it.
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next MATCH;
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}
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# Reset pos back to where it was before this test.
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pos=$pos;
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}
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if ($escape) {
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# Remove escape.
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substr($_, $epos, 1)="";
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pos=$epos+1;
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}
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else {
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# Replace the smiley with its expanded value.
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my $link=htmllink($params{page}, $params{destpage},
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$smileys{$smiley}, linktext => $smiley);
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substr($_, $spos, length($smiley))=$link;
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pos=$epos+length($link);
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}
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}
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return $_;
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}
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1
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