[14489] | 1 | ;#
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| 2 | #
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| 3 | # This library is no longer being maintained, and is included for backward
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| 4 | # compatibility with Perl 4 programs which may require it.
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| 5 | #
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| 6 | # In particular, this should not be used as an example of modern Perl
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| 7 | # programming techniques.
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| 8 | #
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| 9 | # Suggested alternative: Term::Complete
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| 10 | #
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| 11 | ;# @(#)complete.pl,v1.1 ([email protected]) 09/23/91
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| 12 | ;#
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| 13 | ;# Author: Wayne Thompson
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| 14 | ;#
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| 15 | ;# Description:
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| 16 | ;# This routine provides word completion.
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| 17 | ;# (TAB) attempts word completion.
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| 18 | ;# (^D) prints completion list.
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| 19 | ;# (These may be changed by setting $Complete'complete, etc.)
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| 20 | ;#
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| 21 | ;# Diagnostics:
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| 22 | ;# Bell when word completion fails.
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| 23 | ;#
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| 24 | ;# Dependencies:
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| 25 | ;# The tty driver is put into raw mode.
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| 26 | ;#
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| 27 | ;# Bugs:
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| 28 | ;#
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| 29 | ;# Usage:
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| 30 | ;# $input = &Complete('prompt_string', *completion_list);
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| 31 | ;# or
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| 32 | ;# $input = &Complete('prompt_string', @completion_list);
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| 33 | ;#
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| 34 |
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| 35 | CONFIG: {
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| 36 | package Complete;
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| 37 |
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| 38 | $complete = "\004";
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| 39 | $kill = "\025";
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| 40 | $erase1 = "\177";
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| 41 | $erase2 = "\010";
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| 42 | }
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| 43 |
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| 44 | sub Complete {
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| 45 | package Complete;
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| 46 |
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| 47 | local($prompt, @cmp_list, $return, @match, $l, $test, $cmp, $r);
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| 48 | if ($_[1] =~ /^StB\0/) {
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| 49 | ($prompt, *_) = @_;
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| 50 | }
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| 51 | else {
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| 52 | $prompt = shift(@_);
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| 53 | }
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| 54 | @cmp_lst = sort(@_);
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| 55 |
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| 56 | system('stty raw -echo');
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| 57 | LOOP: {
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| 58 | print($prompt, $return);
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| 59 | while (($_ = getc(STDIN)) ne "\r") {
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| 60 | CASE: {
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| 61 | # (TAB) attempt completion
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| 62 | $_ eq "\t" && do {
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| 63 | @match = grep(/^$return/, @cmp_lst);
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| 64 | $l = length($test = shift(@match));
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| 65 | unless ($#match < 0) {
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| 66 | foreach $cmp (@match) {
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| 67 | until (substr($cmp, 0, $l) eq substr($test, 0, $l)) {
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| 68 | $l--;
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| 69 | }
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| 70 | }
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| 71 | print("\a");
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| 72 | }
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| 73 | print($test = substr($test, $r, $l - $r));
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| 74 | $r = length($return .= $test);
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| 75 | last CASE;
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| 76 | };
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| 77 |
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| 78 | # (^D) completion list
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| 79 | $_ eq $complete && do {
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| 80 | print(join("\r\n", '', grep(/^$return/, @cmp_lst)), "\r\n");
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| 81 | redo LOOP;
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| 82 | };
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| 83 |
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| 84 | # (^U) kill
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| 85 | $_ eq $kill && do {
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| 86 | if ($r) {
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| 87 | undef $r;
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| 88 | undef $return;
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| 89 | print("\r\n");
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| 90 | redo LOOP;
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| 91 | }
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| 92 | last CASE;
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| 93 | };
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| 94 |
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| 95 | # (DEL) || (BS) erase
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| 96 | ($_ eq $erase1 || $_ eq $erase2) && do {
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| 97 | if($r) {
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| 98 | print("\b \b");
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| 99 | chop($return);
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| 100 | $r--;
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| 101 | }
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| 102 | last CASE;
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| 103 | };
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| 104 |
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| 105 | # printable char
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| 106 | ord >= 32 && do {
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| 107 | $return .= $_;
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| 108 | $r++;
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| 109 | print;
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| 110 | last CASE;
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| 111 | };
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| 112 | }
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| 113 | }
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| 114 | }
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| 115 | system('stty -raw echo');
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| 116 | print("\n");
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| 117 | $return;
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| 118 | }
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| 119 |
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| 120 | 1;
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