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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
#!/usr/bin/perl
package IkiWiki::Plugin::smiley;
use warnings;
use strict;
use IkiWiki 3.00;
my %smileys;
my $smiley_regexp;
sub import {
add_underlay("smiley");
hook(type => "getsetup", id => "smiley", call => \&getsetup);
hook(type => "sanitize", id => "smiley", call => \&sanitize);
}
sub getsetup () {
return
plugin => {
safe => 1,
# force a rebuild because turning it off
# removes the smileys, which would break links
rebuild => 1,
},
}
sub build_regexp () {
my $srcfile = srcfile("smileys.mdwn", 1);
if (! defined $srcfile) {
print STDERR sprintf(gettext("smiley plugin will not work without %s"),
"smileys.mdwn")."\n";
$smiley_regexp='';
return;
}
my $list=readfile($srcfile);
while ($list =~ m/^\s*\*\s+\\\\([^\s]+)\s+\[\[([^]]+)\]\]/mg) {
my $smiley=$1;
my $file=$2;
$smileys{$smiley}=$file;
# Add a version with < and > escaped, since they probably
# will be (by markdown) by the time the sanitize hook runs.
$smiley=~s/</</g;
$smiley=~s/>/>/g;
$smileys{$smiley}=$file;
}
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 sanitize (@) {
my %params=@_;
build_regexp() unless defined $smiley_regexp;
$_=$params{content};
return $_ unless length $smiley_regexp;
MATCH: while (m{(?:^|(?<=\s|>))(\\?)$smiley_regexp(?:(?=\s|<)|$)}g) {
my $escape=$1;
my $smiley=$2;
my $epos=$-[1];
my $spos=$-[2];
# Smilies are not allowed inside <pre> or <code>.
# For each tag in turn, match forward to find the next <tag>
# or </tag> after the smiley.
my $pos=pos;
foreach my $tag ("pre", "code") {
if (m/<(\/)?\s*$tag\s*>/isg && defined $1) {
# </tag> found first, so the smiley is
# inside the tag, so do not expand it.
next MATCH;
}
# Reset pos back to where it was before this test.
pos=$pos;
}
if ($escape) {
# Remove escape.
substr($_, $epos, 1)="";
pos=$epos+1;
}
else {
# Replace the smiley with its expanded value.
my $link=htmllink($params{page}, $params{destpage},
$smileys{$smiley}, linktext => $smiley);
substr($_, $spos, length($smiley))=$link;
pos=$epos+length($link);
}
}
return $_;
}
1
|