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# -*- coding: utf-8 -*- |
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# Copyright (C) 2011 Rocky Bernstein <rocky@cpan.org> |
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# Nukes output. Used for example in sourcing where you don't want |
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# to see output. |
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# |
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# require_relative 'base_io' |
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use warnings; use strict; |
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use Exporter; |
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package Devel::Trepan::IO::NullOutput; |
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use rlib '../../..'; |
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use Devel::Trepan::Util qw(hash_merge); |
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use Devel::Trepan::IO; |
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use vars qw(@EXPORT @ISA); |
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@ISA = qw(Devel::Trepan::IO::OutputBase Exporter); |
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sub new($;$$) { |
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my ($class, $out, $opts) = @_; |
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$opts ||= {}; |
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my $self = {closed => 0}; |
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Devel::Trepan::IO::OutputBase->new($out, $opts); |
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bless ($self, $class); |
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return $self; |
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} |
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sub close($) { |
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my($self) = @_; |
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$self->{closed} = 1; |
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} |
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sub is_closed($) { |
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my($self) = @_; |
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$self->{closed}; |
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} |
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sub flush($) {;} |
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# Use this to set where to write to. output can be a |
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# file object or a string. This code raises IOError on error. |
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sub write($) {;} |
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# used to write to a debugger that is connected to this |
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# `str' written will have a newline added to it |
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# |
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sub writeline($$) { ; } |
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# Demo it |
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if( __FILE__ eq $0) { |
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my $output = Devel::Trepan::IO::NullOutput->new(*STDOUT); |
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require Data::Dumper; |
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import Data::Dumper; |
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print Dumper($output); |
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$output->write("Invisible"); |
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$output->writeline("Invisible"); |
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} |
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1; |