source: link back to resulting page

[sheet.git] / source.plp

diff --git a/source.plp b/source.plp
index 2b133712c6a0659b16da51b75ff0e564a6337df4..ea856281b6fde8acfc871bf12228f52a18a85101 100644 (file)
--- a/source.plp
+++ b/source.plp
@@ -1,6 +1,7 @@
 <(common.inc.plp)><:
 
 my $source = $Request;
+my $incname = qr{ [a-z][/a-z0-9_.-]* \.(?:plp?|css|js) }x;
 
 if ($source =~ s{(?<=\Q.inc.pl\E)/jsonp?$}{} and -r $source) {
        # convert perl include to json construct
@@ -36,6 +37,7 @@ Html({
                sheet cheat source code perl plp html agpl
        '],
        stylesheet => [qw'light dark mono red'],
+       data => [$source =~ m{\A($incname)\z}],
 });
 
 say '';
@@ -52,7 +54,8 @@ if (not $source) {
        say "</ul>\n";
 }
 else {
-       say "<h1>Source of $source</h1>";
+       my $href = showlink($source, $source =~ m{\A (\w+) \.plp \z}x && "/$1");
+       say "<h1>Source of $href</h1>";
 
        if ($source =~ m{(?:/|^)\.}) {
                die "File request not permitted\n";
@@ -66,29 +69,34 @@ else {
                }
        }
        -r $source or die "Requested file not found\n";
+       my $size = (stat $source)->[7];
 
-       if (eval { require Text::VimColor and Text::VimColor->VERSION(0.12) }) {
+       if (my $hl = eval {
+               $size < 32_768 or die 'large files take too long to parse';
+               require Text::VimColor;
+               Text::VimColor->VERSION(0.12)
+                       or die 'early versions are buggy under FastCGI';
                delete $Text::VimColor::SYNTAX_TYPE{Underlined};
+               return Text::VimColor->new(
+                       file => $source,
+                       vim_options => [@Text::VimColor::VIM_OPTIONS, '+:set enc=utf-8'],
+               )->marked;
+       }) {
                my %TYPETAG = (
                        Statement => 'strong',
                        Error     => 'em',
                        Todo      => 'em',
                );
 
-               my $hl = Text::VimColor->new(
-                       file => $source,
-                       vim_options => [@Text::VimColor::VIM_OPTIONS, '+:set enc=utf-8'],
-               );
-               my $parsed = $hl->marked;
                say '<pre>';
-               foreach (@$parsed) {
+               foreach (@{$hl}) {
                        my ($type, $contents) = @{$_};
                        $contents = decode_utf8($contents);
                        my $tag = $type && ($TYPETAG{$type} || 'span');
                        my $arg = '';
                        print "<$tag$arg class=\"sy-\l$type\">" if $tag;
                        if (!$type || $type eq 'Constant'
-                       and $contents =~ s{^(['"]?)(/?[a-z0-9_.]+\.(?:plp?|css|js))(?=\1$)}{}) {
+                       and $contents =~ s{^(['"]?)($incname)(?=\1$)}{}) {
                                # link other page sources, stylesheets, and javascript
                                print $1 . showlink($2, "/source/$2");
                        }