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root |
1.1 |
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# This library is no longer being maintained, and is included for backward |
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# compatibility with Perl 4 programs which may require it. |
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# |
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# In particular, this should not be used as an example of modern Perl |
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# programming techniques. |
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# |
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# Suggested alternative: Term::Complete |
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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; |
