Fix ugly display when editing a page that has vanished.

[git.ikiwiki.info.git] / IkiWiki / Plugin / smiley.pm

diff --git a/IkiWiki/Plugin/smiley.pm b/IkiWiki/Plugin/smiley.pm
index 7e0b54499d1edb70a57d42a959e56b0ed513f26f..a8fed69e1ba12a021682a1d1e2b247b8e4c54e44 100644 (file)
--- a/IkiWiki/Plugin/smiley.pm
+++ b/IkiWiki/Plugin/smiley.pm
@@ -10,13 +10,22 @@ my $smiley_regexp;
 
 sub import { #{{{
        add_underlay("smiley");
-       hook(type => "filter", id => "smiley", call => \&filter);
+       hook(type => "sanitize", id => "smiley", call => \&sanitize);
 } # }}}
 
 sub build_regexp () { #{{{
        my $list=readfile(srcfile("smileys.mdwn"));
        while ($list =~ m/^\s*\*\s+\\([^\s]+)\s+\[\[([^]]+)\]\]/mg) {
-               $smileys{$1}=$2;
+               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/</&lt;/g;
+               $smiley=~s/>/&gt;/g;
+               $smileys{$smiley}=$file;
        }
        
        if (! %smileys) {
@@ -32,7 +41,7 @@ sub build_regexp () { #{{{
        #debug($smiley_regexp);
 } #}}}
 
-sub filter (@) { #{{{
+sub sanitize (@) { #{{{
        my %params=@_;
 
        build_regexp() unless defined $smiley_regexp;
@@ -40,37 +49,35 @@ sub filter (@) { #{{{
        $_=$params{content};
        return $_ unless length $smiley_regexp;
        
-MATCH: while (m{(?:^|(?<=\s))(\\?)$smiley_regexp(?:(?=\s)|$)}g) {
+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 <tag> or
-               # </tag>. If it's </tag>, then the smiley is inside the
-               # tag, and is not expanded. If it's <tag>, the smiley is
-               # outside the block.
+               # 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) {
-                               if (defined $1) {
-                                       # Inside tag, so do nothing.
-                                       # (Smiley hunting will continue after
-                                       # the tag.)
-                                       next MATCH;
-                               }
-                               else {
-                                       # Reset pos back to where it was before
-                                       # this test.
-                                       pos=$pos;
-                               }
+                       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 ($1) {
+               if ($escape) {
                        # Remove escape.
-                       substr($_, $-[1], 1)="";
+                       substr($_, $epos, 1)="";
                }
                else {
                        # Replace the smiley with its expanded value.
-                       substr($_, $-[2], length($2))=
-                               htmllink($params{page}, $params{destpage}, $smileys{$2}, linktext => $2);
+                       substr($_, $spos, length($smiley))=
+                               htmllink($params{page}, $params{page},
+                                        $smileys{$smiley}, linktext => $smiley);
                }
        }