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Perl.pm
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1998-02-19
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package Term::ReadLine::Perl;
use Carp;
@ISA = qw(Term::ReadLine::Stub Term::ReadLine::Compa Term::ReadLine::Perl::AU);
#require 'readline.pl';
$VERSION = $VERSION = 0.99;
sub readline {
shift;
#my $in =
&readline::readline(@_);
#$loaded = defined &Term::ReadKey::ReadKey;
#print STDOUT "\nrl=`$in', loaded = `$loaded'\n";
#if (ref \$in eq 'GLOB') { # Bug under debugger
# ($in = "$in") =~ s/^\*(\w+::)+//;
#}
#print STDOUT "rl=`$in'\n";
#$in;
}
#sub addhistory {}
*addhistory = \&AddHistory;
#$term;
$readline::minlength = 1; # To peacify -w
$readline::rl_readline_name = undef; # To peacify -w
$readline::rl_basic_word_break_characters = undef; # To peacify -w
sub new {
if (defined $term) {
warn "Cannot create second readline interface, falling back to dumb.\n";
return Term::ReadLine::Stub::new(@_);
}
shift; # Package
if (@_) {
if ($term) {
warn "Ignoring name of second readline interface.\n" if defined $term;
shift;
} else {
$readline::rl_readline_name = shift; # Name
}
}
if (!@_) {
if (!defined $term) {
($IN,$OUT) = Term::ReadLine->findConsole();
open(IN,"<$IN") || croak "Cannot open $IN for read";
open(OUT,">$OUT") || croak "Cannot open $OUT for write";
$readline::term_IN = \*IN;
$readline::term_OUT = \*OUT;
}
} else {
if (defined $term and ($term->IN ne $_[0] or $term->OUT ne $_[1]) ) {
croak "Request for a second readline interface with different terminal";
}
$readline::term_IN = shift;
$readline::term_OUT = shift;
}
eval {require Term::ReadLine::readline}; die $@ if $@;
# The following is here since it is mostly used for perl input:
# $readline::rl_basic_word_break_characters .= '-:+/*,[])}';
$term = bless [$readline::term_IN,$readline::term_OUT];
unless ($ENV{PERL_RL} and $ENV{PERL_RL} =~ /\bo\w*=0/) {
local $Term::ReadLine::termcap_nowarn = 1; # With newer Perls
local $SIG{__WARN__} = sub {}; # With older Perls
$term->ornaments(1);
}
return $term;
}
sub newTTY {
my ($self, $in, $out) = @_;
$readline::term_IN = $self->[0] = $in;
$readline::term_OUT = $self->[1] = $out;
my $sel = select($out);
$| = 1; # for DB::OUT
select($sel);
}
sub ReadLine {'Term::ReadLine::Perl'}
sub MinLine { shift; $readline::minlength = shift }
sub SetHistory {
shift;
@readline::rl_History = @_;
$readline::rl_HistoryIndex = @readline::rl_History;
}
sub GetHistory {
@readline::rl_History;
}
sub AddHistory {
shift;
push @readline::rl_History, @_;
$readline::rl_HistoryIndex = @readline::rl_History + @_;
}
%features = (appname => 1, minline => 1, autohistory => 1, getHistory => 1,
setHistory => 1, addHistory => 1, preput => 1,
attribs => 1, 'newTTY' => 1,
tkRunning => Term::ReadLine::Stub->Features->{'tkRunning'},
ornaments => Term::ReadLine::Stub->Features->{'ornaments'},
);
sub Features { \%features; }
# my %attribs;
tie %attribs, 'Term::ReadLine::Perl::Tie' or die ;
sub Attribs {
\%attribs;
}
sub DESTROY {}
package Term::ReadLine::Perl::AU;
sub AUTOLOAD {
{ $AUTOLOAD =~ s/.*:://; } # preserve match data
my $name = "readline::rl_$AUTOLOAD";
die "Cannot do `$AUTOLOAD' in Term::ReadLine::Perl"
unless exists $readline::{"rl_$AUTOLOAD"};
*$AUTOLOAD = sub { shift; &$name };
goto &$AUTOLOAD;
}
package Term::ReadLine::Perl::Tie;
sub TIEHASH { bless {} }
sub DESTROY {}
sub STORE {
my ($self, $name) = (shift, shift);
$ {'readline::rl_' . $name} = shift;
}
sub FETCH {
my ($self, $name) = (shift, shift);
$ {'readline::rl_' . $name};
}
package Term::ReadLine::Compa;
sub get_c {
my $self = shift;
getc($self->[0]);
}
sub get_line {
my $self = shift;
my $fh = $self->[0];
scalar <$fh>;
}
1;