File Coverage

blib/lib/Filter/gunzip.pm

Criterion	Covered	Total	%
statement	14	16	87.5
branch	1	2	50.0
condition	1	3	33.3
subroutine	5	5	100.0
pod			n/a
total	21	26	80.7

# Copyright 2010, 2011, 2013, 2014, 2019 Kevin Ryde

# This file is part of Filter-gunzip.
#
# Filter-gunzip is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3, or (at your option) any later
# version.
#
# Filter-gunzip is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with Filter-gunzip.  If not, see .

package Filter::gunzip;
use strict;
use Carp;
use DynaLoader;

use vars qw($VERSION @ISA);
$VERSION = 8;
@ISA = ('DynaLoader');

# uncomment this to run the ### lines
# use Smart::Comments;

my $use_xs = 1;
if (! eval { __PACKAGE__->bootstrap($VERSION) }) {
  ### filter gunzip no XS: $@
  $use_xs = 0;
} elsif (! eval { require PerlIO::gzip; 1 }) {
  ### filter gunzip have XS but no have PerlIO gzip: $@
  $use_xs = 0;
}

sub import {
  my ($class) = @_;
  if ($use_xs && _filter_by_layer()) {
    ### applied gzip layer ...
  } else {
    ### use Filter gunzip Filter ...
    require Filter::gunzip::Filter;
    Filter::gunzip::Filter->import;
  }
}

1;
__END__