require 5.000;
require Exporter;
-@ISA = qw(Exporter);
-@EXPORT = qw(Complete);
+use strict;
+our @ISA = qw(Exporter);
+our @EXPORT = qw(Complete);
+our $VERSION = '1.402';
-# @(#)complete.pl,v1.1 (me@anywhere.EBay.Sun.COM) 09/23/91
+# @(#)complete.pl,v1.2 (me@anywhere.EBay.Sun.COM) 09/23/91
=head1 NAME
=head1 SYNOPSIS
- $input = complete('prompt_string', \@completion_list);
- $input = complete('prompt_string', @completion_list);
+ $input = Complete('prompt_string', \@completion_list);
+ $input = Complete('prompt_string', @completion_list);
=head1 DESCRIPTION
This routine provides word completion on the list of words in
the array (or array ref).
-The tty driver is put into raw mode using the system command
-C<stty raw -echo> and restored using C<stty -raw echo>.
+The tty driver is put into raw mode and restored using an operating
+system specific command, in UNIX-like environments C<stty>.
The following command characters are defined:
=over 4
=item E<lt>tabE<gt>
+
Attempts word completion.
Cannot be changed.
=head1 BUGS
-The completion charater E<lt>tabE<gt> cannot be changed.
+The completion character E<lt>tabE<gt> cannot be changed.
=head1 AUTHOR
=cut
+our($complete, $kill, $erase1, $erase2, $tty_raw_noecho, $tty_restore, $stty, $tty_safe_restore);
+our($tty_saved_state) = '';
CONFIG: {
$complete = "\004";
$kill = "\025";
$erase1 = "\177";
$erase2 = "\010";
+ foreach my $s (qw(/bin/stty /usr/bin/stty)) {
+ if (-x $s) {
+ $tty_raw_noecho = "$s raw -echo";
+ $tty_restore = "$s -raw echo";
+ $tty_safe_restore = $tty_restore;
+ $stty = $s;
+ last;
+ }
+ }
}
sub Complete {
- my($prompt, @cmp_list, $return, @match, $l, $test, $cmp, $r);
+ my($prompt, @cmp_lst, $cmp, $test, $l, @match);
+ my ($return, $r) = ("", 0);
+
+ $return = "";
+ $r = 0;
$prompt = shift;
if (ref $_[0] || $_[0] =~ /^\*/) {
@cmp_lst = sort(@_);
}
- system('stty raw -echo');
+ # Attempt to save the current stty state, to be restored later
+ if (defined $stty && defined $tty_saved_state && $tty_saved_state eq '') {
+ $tty_saved_state = qx($stty -g 2>/dev/null);
+ if ($?) {
+ # stty -g not supported
+ $tty_saved_state = undef;
+ }
+ else {
+ $tty_saved_state =~ s/\s+$//g;
+ $tty_restore = qq($stty "$tty_saved_state" 2>/dev/null);
+ }
+ }
+ system $tty_raw_noecho if defined $tty_raw_noecho;
LOOP: {
+ local $_;
print($prompt, $return);
while (($_ = getc(STDIN)) ne "\r") {
CASE: {
# (TAB) attempt completion
$_ eq "\t" && do {
- @match = grep(/^$return/, @cmp_lst);
- $l = length($test = shift(@match));
+ @match = grep(/^\Q$return/, @cmp_lst);
unless ($#match < 0) {
+ $l = length($test = shift(@match));
foreach $cmp (@match) {
until (substr($cmp, 0, $l) eq substr($test, 0, $l)) {
$l--;
}
}
print("\a");
+ print($test = substr($test, $r, $l - $r));
+ $r = length($return .= $test);
}
- print($test = substr($test, $r, $l - $r));
- $r = length($return .= $test);
last CASE;
};
# (^D) completion list
$_ eq $complete && do {
- print(join("\r\n", '', grep(/^$return/, @cmp_lst)), "\r\n");
+ print(join("\r\n", '', grep(/^\Q$return/, @cmp_lst)), "\r\n");
redo LOOP;
};
# (^U) kill
$_ eq $kill && do {
if ($r) {
- undef $r;
- undef $return;
+ $r = 0;
+ $return = "";
print("\r\n");
redo LOOP;
}
}
}
}
- system('stty -raw echo');
+
+ # system $tty_restore if defined $tty_restore;
+ if (defined $tty_saved_state && defined $tty_restore && defined $tty_safe_restore)
+ {
+ system $tty_restore;
+ if ($?) {
+ # tty_restore caused error
+ system $tty_safe_restore;
+ }
+ }
print("\n");
$return;
}
1;
-