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| Dir : /usr/share/doc/perl-Filter/examples/method/ |
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| Dir : //usr/share/doc/perl-Filter/examples/method/NewSubst.pm |
package
NewSubst ;
use Filter::Util::Call ;
use Carp ;
use strict ;
use warnings ;
sub filter
{
my ($self) = @_ ;
my ($status) ;
if (($status = filter_read()) > 0) {
$self->{Found} = 1
if $self->{Found} == 0 and /$self->{Start}/ ;
if ($self->{Found}) {
s/$self->{From}/$self->{To}/ ;
filter_del() if /$self->{Stop}/ ;
}
}
$status ;
}
sub import
{
my ($self, @args) = @_ ;
croak("usage: use Subst qw(start stop from to)")
unless @args == 4 ;
filter_add( { Start => $args[0],
Stop => $args[1],
From => $args[2],
To => $args[3],
Found => 0 }
) ;
}
1 ;