Merge branch 'ready/imgforpdf-and-more'

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

diff --git a/IkiWiki/Plugin/highlight.pm b/IkiWiki/Plugin/highlight.pm
index 9d05e9fcf49126c7d1f97d815e6c3435a82cd83a..ce919748a4d10c6308cea7c1ea6559c47c608534 100644 (file)
--- a/IkiWiki/Plugin/highlight.pm
+++ b/IkiWiki/Plugin/highlight.pm
@@ -1,11 +1,17 @@
 #!/usr/bin/perl
 package IkiWiki::Plugin::highlight;
 
+# This has been tested with highlight 2.16 and highlight 3.2+svn19.
+# In particular version 3.2 won't work. It detects the different
+# versions by the presence of the the highlight::DataDir class.
+
 use warnings;
 use strict;
 use IkiWiki 3.00;
 use Encode;
 
+my $data_dir;
+
 sub import {
        hook(type => "getsetup", id => "highlight",  call => \&getsetup);
        hook(type => "checkconfig", id => "highlight", call => \&checkconfig);
@@ -45,13 +51,34 @@ sub getsetup () {
 }
 
 sub checkconfig () {
+       eval q{use highlight};
+       if (highlight::DataDir->can('new')) {
+               $data_dir=new highlight::DataDir();
+               $data_dir->searchDataDir("");
+       } else {
+               $data_dir=undef;
+       }
+
        if (! exists $config{filetypes_conf}) {
-               $config{filetypes_conf}="/etc/highlight/filetypes.conf";
+         if (! $data_dir ) {
+               $config{filetypes_conf}= "/etc/highlight/filetypes.conf";
+             } elsif ( $data_dir -> can('searchFile') ) {
+               # 3.18 +
+               $config{filetypes_conf}=
+                 $data_dir -> searchFile("filetypes.conf");
+             } else {
+               # 3.9 +
+               $config{filetypes_conf}=
+                 $data_dir -> getConfDir() . "/filetypes.conf";
+             }
        }
+       # note that this is only used for old versions of highlight
+       # where $data_dir will not be defined.
        if (! exists $config{langdefdir}) {
-               $config{langdefdir}="/usr/share/highlight/langDefs";
+               $config{langdefdir}= "/usr/share/highlight/langDefs";
+
        }
-       if (exists $config{tohighlight}) {
+       if (exists $config{tohighlight} && read_filetypes()) {
                foreach my $file (split ' ', $config{tohighlight}) {
                        my @opts = $file=~s/^\.// ?
                                (keepextension => 1) :
@@ -70,7 +97,7 @@ sub checkconfig () {
                                id => $file,
                                call => sub {
                                        my %params=@_;
-                                       highlight($langfile, $params{content});
+                                       highlight($langfile, $file, $params{content});
                                },
                                longname => sprintf(gettext("Source code: %s"), $file),
                                @opts,
@@ -87,7 +114,7 @@ sub htmlizeformat {
                return;
        }
 
-       return Encode::decode_utf8(highlight($langfile, shift));
+       return Encode::decode_utf8(highlight($langfile, $format, shift));
 }
 
 my %ext2lang;
@@ -96,7 +123,12 @@ my %highlighters;
 
 # Parse highlight's config file to get extension => language mappings.
 sub read_filetypes () {
-       open (my $f, $config{filetypes_conf}) || error("$config{filetypes_conf}: $!");
+       my $f;
+       if (!open($f, $config{filetypes_conf})) {
+               warn($config{filetypes_conf}.": ".$!);
+               return 0;
+       };
+
        local $/=undef;
        my $config=<$f>;
        close $f;
@@ -119,21 +151,31 @@ sub read_filetypes () {
                }
        }
 
-       $filetypes_read=1;
+       return $filetypes_read=1;
 }
 
 
+sub searchlangdef {
+  my $lang=shift;
+
+  if ($data_dir) {
+    return $data_dir->getLangPath($lang . ".lang");
+  } else {
+    return "$config{langdefdir}/$lang.lang";
+  }
+
+}
 # Given a filename extension, determines the language definition to
 # use to highlight it.
 sub ext2langfile ($) {
        my $ext=shift;
 
-       my $langfile="$config{langdefdir}/$ext.lang";
+       my $langfile=searchlangdef($ext);
        return $langfile if exists $highlighters{$langfile};
 
        read_filetypes() unless $filetypes_read;
        if (exists $ext2lang{$ext}) {
-               return "$config{langdefdir}/$ext2lang{$ext}.lang";
+               return searchlangdef($ext2lang{$ext});
        }
        # If a language only has one common extension, it will not
        # be listed in filetypes, so check the langfile.
@@ -148,6 +190,7 @@ sub ext2langfile ($) {
 # Interface to the highlight C library.
 sub highlight ($$) {
        my $langfile=shift;
+       my $extorfile=shift;
        my $input=shift;
 
        eval q{use highlight};
@@ -158,11 +201,17 @@ sub highlight ($$) {
 
        my $gen;
        if (! exists $highlighters{$langfile}) {
-               $gen = highlightc::CodeGenerator_getInstance($highlightc::XHTML);
+               $gen = highlight::CodeGenerator::getInstance($highlight::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
+               if ($data_dir){
+                       # new style, requires a real theme, but has no effect
+                       $gen->initTheme($data_dir->getThemePath("seashell.theme"));
+               } else {
+                       # old style, anything works.
+                       $gen->initTheme("/dev/null");
+               }
+               $gen->loadLanguage($langfile); # must come after initTheme
                $gen->setEncoding("utf-8");
                $highlighters{$langfile}=$gen;
        }
@@ -170,7 +219,7 @@ sub highlight ($$) {
                $gen=$highlighters{$langfile};
        }
 
-       return $gen->generateString($input);
+       return "<div class=\"highlight-$extorfile\">".$gen->generateString($input)."</div>";
 }
 
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