package
Count ;
use Filter::Util::Call ;
use strict ;
use warnings ;
sub import
{
my ($self) = @_ ;
my ($count) = 0 ;
filter_add(
sub
{
my ($status) ;
if (($status = filter_read()) > 0 ) {
s/Joe/Jim/g ;
++ $count ;
}
elsif ($count >= 0) { # EOF
$_ = "print q[Made $count substitutions\n] ;" ;
$status = 1 ;
$count = -1 ;
}
$status ;
})
}
1 ;