Merge branch 'master' of ssh://git.ikiwiki.info/srv/git/ikiwiki.info

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

diff --git a/IkiWiki/Plugin/highlight.pm b/IkiWiki/Plugin/highlight.pm
index f116c41ddc0d14b08c2e017b0e36c6daea9fc890..20f79ef575189506fe5343d31950a3f1a57f961e 100644 (file)
--- a/IkiWiki/Plugin/highlight.pm
+++ b/IkiWiki/Plugin/highlight.pm
@@ -26,7 +26,7 @@ sub getsetup () {
                tohighlight => {
                        type => "string",
                        example => ".c .h .cpp .pl .py Makefile:make",
-                       description => "source files to syntax highlight",
+                       description => "types of source files to syntax highlight",
                        safe => 1,
                        rebuild => 1,
                },
@@ -74,6 +74,7 @@ sub htmlizefallback {
 
 my %ext2lang;
 my $filetypes_read=0;
+my %highlighters;
 
 # Parse highlight's config file to get extension => language mappings.
 sub read_filetypes () {
@@ -88,23 +89,23 @@ sub read_filetypes () {
        $filetypes_read=1;
 }
 
-sub langfile ($) {
-       return "$langdefdir/$_[0].lang";
-}
 
 # Given a filename extension, determines the language definition to
 # use to highlight it.
 sub ext2langfile ($) {
        my $ext=shift;
 
+       my $langfile="$langdefdir/$ext.lang";
+       return $langfile if exists $highlighters{$langfile};
+
        read_filetypes() unless $filetypes_read;
        if (exists $ext2lang{$ext}) {
-               return langfile($ext2lang{$ext});
+               return "$langdefdir/$ext2lang{$ext}.lang";
        }
        # If a language only has one common extension, it will not
        # be listed in filetypes, so check the langfile.
-       elsif (-e langfile($ext)) {
-               return langfile($ext);
+       elsif (-e $langfile) {
+               return $langfile;
        }
        else {
                return undef;
@@ -122,16 +123,21 @@ sub highlight ($$) {
                return $input;
        }
 
-       my $gen = highlightc::CodeGenerator_getInstance($highlightc::XHTML);
-       $gen->setFragmentCode(1); # generate html fragment
-       $gen->setHTMLEnclosePreTag(1); # include stylish <pre>
-       $gen->initLanguage($langfile);
-       $gen->initTheme("/dev/null"); # theme is not needed because CSS is not emitted
-       $gen->setEncoding("utf-8");
+       my $gen;
+       if (! exists $highlighters{$langfile}) {
+               $gen = highlightc::CodeGenerator_getInstance($highlightc::XHTML);
+               $gen->setFragmentCode(1); # generate html fragment
+               $gen->setHTMLEnclosePreTag(1); # include stylish <pre>
+               $gen->initTheme("/dev/null"); # theme is not needed because CSS is not emitted
+               $gen->initLanguage($langfile); # must come after initTheme
+               $gen->setEncoding("utf-8");
+               $highlighters{$langfile}=$gen;
+       }
+       else {          
+               $gen=$highlighters{$langfile};
+       }
 
-       my $output=$gen->generateString($input);
-       highlightc::CodeGenerator_deleteInstance($gen);
-       return $output;
+       return $gen->generateString($input);
 }
 
 1