path: root/IkiWiki/Plugin/htmltidy.pm

#!/usr/bin/perl
# HTML Tidy plugin
# requires 'tidy' binary, found in Debian or http://tidy.sf.net/
# mostly a proof-of-concept on how to use external filters.
# It is particularly useful when the html plugin is used.
#
# by Faidon Liambotis
package IkiWiki::Plugin::htmltidy;

use warnings;
use strict;
use IkiWiki;
use IPC::Open2;

sub import { #{{{
    hook(type => "sanitize", id => "tidy", call => \&sanitize);
} # }}}

sub sanitize (@) { #{{{
    my %params=@_;

    my $pid;
    my $sigpipe=0;
    $SIG{PIPE}=sub { $sigpipe=1 };
    $pid=open2(*IN, *OUT, 'tidy -quiet -asxhtml -utf8 --show-body-only yes --show-warnings no --tidy-mark no');
    
    # open2 doesn't respect "use open ':utf8'"
    binmode (IN, ':utf8');
    binmode (OUT, ':utf8'); 
    
    print OUT $params{content};
    close OUT;

    local $/ = undef;
    my $ret=<IN>;
    close IN;
    waitpid $pid, 0;

    return $params{content} if $sigpipe;
    $SIG{PIPE}="DEFAULT";

    return $ret;
} # }}}

1