File Coverage

blib/lib/EBook/Ishmael/EBook/KF8.pm

Criterion	Covered	Total	%
statement	30	30	100.0
branch	5	6	83.3
condition	2	3	66.6
subroutine	5	5	100.0
pod	0	1	0.0
total	42	45	93.3

package EBook::Ishmael::EBook::KF8;
use 5.016;
our $VERSION = '2.05';
use strict;
use warnings;

use parent 'EBook::Ishmael::EBook::Mobi';

my $TYPE    = 'BOOK';
my $CREATOR = 'MOBI';

sub heuristic {

    my $class = shift;
    my $file  = shift;
    my $fh    = shift;

    return 0 unless -s $file >= 68;

    seek $fh, 32, 0;
    read $fh, my ($null), 1;

    unless ($null eq "\0") {
        return 0;
    }

    seek $fh, 60, 0;
    read $fh, my ($type),    4;
    read $fh, my ($creator), 4;

    return 0 unless $type eq $TYPE && $creator eq $CREATOR;

    seek $fh, 78, 0;
    read $fh, my ($off), 4;
    $off = unpack "N", $off;
    seek $fh, $off + 36, 0;
    read $fh, my ($ver), 4;
    $ver = unpack "N", $ver;

    return $ver == 8;

}

1;