IkiWiki/Plugin/htmltidy.pm

   1 #!/usr/bin/perl
   2 # HTML Tidy plugin
   3 # requires 'tidy' binary, found in Debian or http://tidy.sf.net/
   4 # mostly a proof-of-concept on how to use external filters.
   5 # It is particularly useful when the html plugin is used.
   6 #
   7 # by Faidon Liambotis
   8 package IkiWiki::Plugin::htmltidy;
   9
  10 use warnings;
  11 use strict;
  12 use IkiWiki 3.00;
  13 use IPC::Open2;
  14
  15 sub import {
  16         hook(type => "getsetup", id => "tidy", call => \&getsetup);
  17         hook(type => "sanitize", id => "tidy", call => \&sanitize);
  18 }
  19
  20 sub getsetup () {
  21         return
  22                 plugin => {
  23                         safe => 1,
  24                         rebuild => undef,
  25                 },
  26 }
  27
  28 sub sanitize (@) {
  29         my %params=@_;
  30
  31         my $pid;
  32         my $sigpipe=0;
  33         $SIG{PIPE}=sub { $sigpipe=1 };
  34         $pid=open2(*IN, *OUT, 'tidy -quiet -asxhtml -utf8 --show-body-only yes --show-warnings no --tidy-mark no --markup yes 2>/dev/null');
  35
  36         # open2 doesn't respect "use open ':utf8'"
  37         binmode (IN, ':utf8');
  38         binmode (OUT, ':utf8');
  39
  40         print OUT $params{content};
  41         close OUT;
  42
  43         local $/ = undef;
  44         my $ret=<IN>;
  45         close IN;
  46         waitpid $pid, 0;
  47
  48         $SIG{PIPE}="DEFAULT";
  49         return "" if $sigpipe || ! defined $ret;
  50
  51         return $ret;
  52 }
  53
  54 1