112 lines
2.8 KiB
Perl
112 lines
2.8 KiB
Perl
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;#
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;# @(#)complete.pl,v1.1 (me@anywhere.EBay.Sun.COM) 09/23/91
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;#
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;# Author: Wayne Thompson
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;#
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;# Description:
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;# This routine provides word completion.
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;# (TAB) attempts word completion.
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;# (^D) prints completion list.
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;# (These may be changed by setting $Complete'complete, etc.)
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;#
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;# Diagnostics:
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;# Bell when word completion fails.
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;#
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;# Dependencies:
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;# The tty driver is put into raw mode.
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;#
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;# Bugs:
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;#
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;# Usage:
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;# $input = &Complete('prompt_string', *completion_list);
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;# or
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;# $input = &Complete('prompt_string', @completion_list);
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;#
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CONFIG: {
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package Complete;
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$complete = "\004";
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$kill = "\025";
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$erase1 = "\177";
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$erase2 = "\010";
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}
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sub Complete {
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package Complete;
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local($prompt, @cmp_list, $return, @match, $l, $test, $cmp, $r);
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if ($_[1] =~ /^StB\0/) {
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($prompt, *_) = @_;
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}
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else {
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$prompt = shift(@_);
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}
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@cmp_lst = sort(@_);
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system('stty raw -echo');
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LOOP: {
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print($prompt, $return);
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while (($_ = getc(STDIN)) ne "\r") {
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CASE: {
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# (TAB) attempt completion
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$_ eq "\t" && do {
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@match = grep(/^$return/, @cmp_lst);
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$l = length($test = shift(@match));
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unless ($#match < 0) {
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foreach $cmp (@match) {
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until (substr($cmp, 0, $l) eq substr($test, 0, $l)) {
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$l--;
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}
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}
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print("\a");
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}
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print($test = substr($test, $r, $l - $r));
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$r = length($return .= $test);
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last CASE;
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};
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# (^D) completion list
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$_ eq $complete && do {
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print(join("\r\n", '', grep(/^$return/, @cmp_lst)), "\r\n");
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redo LOOP;
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};
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# (^U) kill
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$_ eq $kill && do {
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if ($r) {
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undef $r;
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undef $return;
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print("\r\n");
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redo LOOP;
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}
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last CASE;
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};
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# (DEL) || (BS) erase
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($_ eq $erase1 || $_ eq $erase2) && do {
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if($r) {
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print("\b \b");
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chop($return);
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$r--;
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}
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last CASE;
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};
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# printable char
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ord >= 32 && do {
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$return .= $_;
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$r++;
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print;
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last CASE;
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};
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}
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}
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}
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system('stty -raw echo');
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print("\n");
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$return;
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}
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1;
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