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1 package Language::INTERCAL::GenericIO::TEE;
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2
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3 # Read data to multiple files
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4
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5 # This file is part of CLC-INTERCAL
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6
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7 # Copyright (c) 2006-2008 Claudio Calvelli, all rights reserved.
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8
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9 # CLC-INTERCAL is copyrighted software. However, permission to use, modify,
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10 # and distribute it is granted provided that the conditions set out in the
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11 # licence agreement are met. See files README and COPYING in the distribution.
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12
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13 use strict;
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14 use vars qw($VERSION $PERVERSION);
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15 ($VERSION) = ($PERVERSION = "CLC-INTERCAL/Base INTERCAL/GenericIO/TEE.pm 1.-94.-2") =~ /\s(\S+)$/;
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16
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17 use Carp;
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18 use Language::INTERCAL::Exporter '1.-94.-2';
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19 use Language::INTERCAL::Splats '1.-94.-2', qw(:SP);
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20 use Language::INTERCAL::GenericIO '1.-94.-2';
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21 use vars qw(@ISA);
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22 @ISA = qw(Language::INTERCAL::GenericIO);
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23
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24 sub _new {
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25 @_ == 3 or croak
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26 "Usage: new Language::INTERCAL::GenericIO::TEE(MODE, LIST)";
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27 my ($object, $mode, $data) = @_;
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28 $mode =~ /[ar]/ or croak "MODE must be \"read\" when TYPE is TEE";
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29 ref $data && 'ARRAY' eq ref $data or croak "DATA must be a array ref";
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30 $object->{filedata} = $data;
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31 }
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32
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33 sub read_binary {
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34 @_ == 2 or croak "Usage: IO->read_binary(DATA)";
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35 my ($object, $string) = @_;
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36 for my $tee (@{$object->{filedata}}) {
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37 $tee->read_binary($string);
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38 }
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39 $object;
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40 }
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41
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42 sub _write_code { return '' }
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43 sub _write_text_code { return '' }
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44
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45 sub describe {
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46 @_ == 1 or croak "Usage: IO->describe";
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47 my ($object) = @_;
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48 return "TEE(" .
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49 join(',', map { $_->describe } @{$object->{filedata}}) .
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50 ")";
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51 }
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52
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53 sub is_terminal {
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54 @_ == 1 or croak "Usage: IO->is_terminal";
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55 my ($object) = @_;
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56 # if any of the files is a terminal, the whole TEE is a terminal; the idea
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57 # is that is_terminal() is used to decide whether to produce prompts
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58 for my $f (@{$object->{filedata}}) {
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59 $f->is_terminal and return 1;
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60 }
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61 0;
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62 }
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63
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64 1;
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