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UUdecode.pm	1.02 MB	View DL Edit

Edit file: /usr/share/doc/perl-Filter/examples/closure/UUdecode.pm

package Filter::UUdecode ;

use Filter::Util::Call ;

use strict ;
use warnings ;

our $VERSION = '1.00' ;

sub import
{
    my($self) = @_ ;
    my ($count) = 0 ;

filter_add( 
        sub 
        {
            my ($status) ;
        
            while (1) {
        
	        return $status 
	            if ($status = filter_read() ) <= 0;
        
	        chomp ;
	        ++ $count ;
        
	        # Skip the begin line (if it is there)
	        ($_ = ''), next if $count == 1 and /^begin/ ;
        
	        # is this the last line?
	        if ($_ eq " " or length $_ <= 1) {
	            $_ = '' ;
	            # If there is an end line, skip it too
                    return $status
	                if ($status = filter_read() ) <= 0 ;
                    $_ = "\n" if /^end/ ;
	            filter_del() ;
	            return 1 ;
	        }
        
	        # uudecode the line
	        $_ = unpack("u", $_) ;
        
	        # return the uudecoded data
	        return $status ;
            }
        })
        
}
1 ;

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