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[usit-rt.git] / lib / RT / Squish / JS.pm

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=head1 SYNOPSIS

  use RT::Squish::JS;
  my $squish = RT::Squish::JS->new();

=head1 DESCRIPTION

This module lets you create squished content of js files.

=head1 METHODS

=cut

use strict;
use warnings;

package RT::Squish::JS;
use base 'RT::Squish';

=head2 Squish

not only concatenate files, but also minify them

=cut

sub Squish {
    my $self    = shift;
    my $content;

    for my $file ( RT->Config->Get('JSFiles') ) {
        my $path = "/NoAuth/js/$file";
        if ( $HTML::Mason::Commands::m->comp_exists($path) ) {
            $content .= $HTML::Mason::Commands::m->scomp($path);
        } else {
            RT->Logger->error("Unable to open $path for JS Squishing");
            next;
        }
    }

    return $self->Filter($content);
}

sub Filter {
    my $self    = shift;
    my $content = shift;

    my $minified;
    my $jsmin = RT->Config->Get('JSMinPath');
    if ( $jsmin && -x $jsmin ) {
        my $input = $content;
        my ( $output, $error );

        # If we're running under fastcgi, STDOUT and STDERR are tied
        # filehandles, which cause IPC::Run3 to flip out.  Construct
        # temporary, not-tied replacements for it to see instead.
        my $stdout = IO::Handle->new;
        $stdout->fdopen( 1, 'w' );
        local *STDOUT = $stdout;
        my $stderr = IO::Handle->new;
        $stderr->fdopen( 2, 'w' );
        local *STDERR = $stderr;

        local $SIG{'CHLD'} = 'DEFAULT';
        require IPC::Run3;
        IPC::Run3::run3( [$jsmin], \$input, \$output, \$error );
        if ( $? >> 8 ) {
            $RT::Logger->warning("failed to jsmin: $error ");
        }
        else {
            $content  = $output;
            $minified = 1;
        }
    }

    return $content;
}

1;