package Term::Complete; require 5.000; require Exporter; @ISA = qw(Exporter); @EXPORT = qw(Complete); # @(#)complete.pl,v1.1 (me@anywhere.EBay.Sun.COM) 09/23/91 =head1 NAME Term::Complete - Perl word completion module =head1 SYNOPSIS $input = complete('prompt_string', \@completion_list); $input = complete('prompt_string', @completion_list); =head1 DESCRIPTION This routine provides word completion on the list of words in the array (or array ref). The tty driver is put into raw mode using the system command C and restored using C. The following command characters are defined: =over 4 =item EtabE Attempts word completion. Cannot be changed. =item ^D Prints completion list. Defined by I<$Term::Complete::complete>. =item ^U Erases the current input. Defined by I<$Term::Complete::kill>. =item EdelE, EbsE Erases one character. Defined by I<$Term::Complete::erase1> and I<$Term::Complete::erase2>. =back =head1 DIAGNOSTICS Bell sounds when word completion fails. =head1 BUGS The completion charater EtabE cannot be changed. =head1 AUTHOR Wayne Thompson =cut CONFIG: { $complete = "\004"; $kill = "\025"; $erase1 = "\177"; $erase2 = "\010"; } sub Complete { my($prompt, @cmp_list, $return, @match, $l, $test, $cmp, $r); $prompt = shift; if (ref $_[0] || $_[0] =~ /^\*/) { @cmp_lst = sort @{$_[0]}; } else { @cmp_lst = sort(@_); } system('stty raw -echo'); LOOP: { 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)); unless ($#match < 0) { 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); last CASE; }; # (^D) completion list $_ eq $complete && do { print(join("\r\n", '', grep(/^$return/, @cmp_lst)), "\r\n"); redo LOOP; }; # (^U) kill $_ eq $kill && do { if ($r) { undef $r; undef $return; print("\r\n"); redo LOOP; } last CASE; }; # (DEL) || (BS) erase ($_ eq $erase1 || $_ eq $erase2) && do { if($r) { print("\b \b"); chop($return); $r--; } last CASE; }; # printable char ord >= 32 && do { $return .= $_; $r++; print; last CASE; }; } } } system('stty -raw echo'); print("\n"); $return; } 1;