| 1 | ;# |
| 2 | # |
| 3 | # This library is no longer being maintained, and is included for backward |
| 4 | # compatibility with Perl 4 programs which may require it. |
| 5 | # |
| 6 | # In particular, this should not be used as an example of modern Perl |
| 7 | # programming techniques. |
| 8 | # |
| 9 | # Suggested alternative: Term::Complete |
| 10 | # |
| 11 | ;# @(#)complete.pl,v1.1 (me@anywhere.EBay.Sun.COM) 09/23/91 |
| 12 | ;# |
| 13 | ;# Author: Wayne Thompson |
| 14 | ;# |
| 15 | ;# Description: |
| 16 | ;# This routine provides word completion. |
| 17 | ;# (TAB) attempts word completion. |
| 18 | ;# (^D) prints completion list. |
| 19 | ;# (These may be changed by setting $Complete'complete, etc.) |
| 20 | ;# |
| 21 | ;# Diagnostics: |
| 22 | ;# Bell when word completion fails. |
| 23 | ;# |
| 24 | ;# Dependencies: |
| 25 | ;# The tty driver is put into raw mode. |
| 26 | ;# |
| 27 | ;# Bugs: |
| 28 | ;# |
| 29 | ;# Usage: |
| 30 | ;# $input = &Complete('prompt_string', *completion_list); |
| 31 | ;# or |
| 32 | ;# $input = &Complete('prompt_string', @completion_list); |
| 33 | ;# |
| 34 | |
| 35 | CONFIG: { |
| 36 | package Complete; |
| 37 | |
| 38 | $complete = "\004"; |
| 39 | $kill = "\025"; |
| 40 | $erase1 = "\177"; |
| 41 | $erase2 = "\010"; |
| 42 | } |
| 43 | |
| 44 | sub Complete { |
| 45 | package Complete; |
| 46 | |
| 47 | local($prompt, @cmp_list, $return, @match, $l, $test, $cmp, $r); |
| 48 | if ($_[1] =~ /^StB\0/) { |
| 49 | ($prompt, *_) = @_; |
| 50 | } |
| 51 | else { |
| 52 | $prompt = shift(@_); |
| 53 | } |
| 54 | @cmp_lst = sort(@_); |
| 55 | |
| 56 | system('stty raw -echo'); |
| 57 | LOOP: { |
| 58 | print($prompt, $return); |
| 59 | while (($_ = getc(STDIN)) ne "\r") { |
| 60 | CASE: { |
| 61 | # (TAB) attempt completion |
| 62 | $_ eq "\t" && do { |
| 63 | @match = grep(/^$return/, @cmp_lst); |
| 64 | $l = length($test = shift(@match)); |
| 65 | unless ($#match < 0) { |
| 66 | foreach $cmp (@match) { |
| 67 | until (substr($cmp, 0, $l) eq substr($test, 0, $l)) { |
| 68 | $l--; |
| 69 | } |
| 70 | } |
| 71 | print("\a"); |
| 72 | } |
| 73 | print($test = substr($test, $r, $l - $r)); |
| 74 | $r = length($return .= $test); |
| 75 | last CASE; |
| 76 | }; |
| 77 | |
| 78 | # (^D) completion list |
| 79 | $_ eq $complete && do { |
| 80 | print(join("\r\n", '', grep(/^$return/, @cmp_lst)), "\r\n"); |
| 81 | redo LOOP; |
| 82 | }; |
| 83 | |
| 84 | # (^U) kill |
| 85 | $_ eq $kill && do { |
| 86 | if ($r) { |
| 87 | undef $r; |
| 88 | undef $return; |
| 89 | print("\r\n"); |
| 90 | redo LOOP; |
| 91 | } |
| 92 | last CASE; |
| 93 | }; |
| 94 | |
| 95 | # (DEL) || (BS) erase |
| 96 | ($_ eq $erase1 || $_ eq $erase2) && do { |
| 97 | if($r) { |
| 98 | print("\b \b"); |
| 99 | chop($return); |
| 100 | $r--; |
| 101 | } |
| 102 | last CASE; |
| 103 | }; |
| 104 | |
| 105 | # printable char |
| 106 | ord >= 32 && do { |
| 107 | $return .= $_; |
| 108 | $r++; |
| 109 | print; |
| 110 | last CASE; |
| 111 | }; |
| 112 | } |
| 113 | } |
| 114 | } |
| 115 | system('stty -raw echo'); |
| 116 | print("\n"); |
| 117 | $return; |
| 118 | } |
| 119 | |
| 120 | 1; |