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a687059c LW |
1 | ;# |
2 | ;# @(#)complete.pl 1.0 (sun!waynet) 11/11/88 | |
3 | ;# | |
4 | ;# Author: Wayne Thompson | |
5 | ;# | |
6 | ;# Description: | |
7 | ;# This routine provides word completion. | |
8 | ;# (TAB) attempts word completion. | |
9 | ;# (^D) prints completion list. | |
7e1cf235 | 10 | ;# (These may be changed by setting $Complete'complete, etc.) |
a687059c LW |
11 | ;# |
12 | ;# Diagnostics: | |
13 | ;# Bell when word completion fails. | |
14 | ;# | |
15 | ;# Dependencies: | |
16 | ;# The tty driver is put into raw mode. | |
17 | ;# | |
18 | ;# Bugs: | |
a687059c LW |
19 | ;# |
20 | ;# Usage: | |
21 | ;# $input = do Complete('prompt_string', @completion_list); | |
22 | ;# | |
23 | ||
7e1cf235 LW |
24 | CONFIG: { |
25 | package Complete; | |
26 | ||
27 | $complete = "\004"; | |
28 | $kill = "\025"; | |
29 | $erase1 = "\177"; | |
30 | $erase2 = "\010"; | |
31 | } | |
32 | ||
a687059c | 33 | sub Complete { |
7e1cf235 LW |
34 | package Complete; |
35 | ||
a687059c LW |
36 | local ($prompt) = shift (@_); |
37 | local ($c, $cmp, $l, $r, $ret, $return, $test); | |
d8f2e4cc | 38 | @_cmp_lst = sort @_; |
afd9f252 | 39 | local($[) = 0; |
a687059c LW |
40 | system 'stty raw -echo'; |
41 | loop: { | |
42 | print $prompt, $return; | |
43 | while (($c = getc(stdin)) ne "\r") { | |
44 | if ($c eq "\t") { # (TAB) attempt completion | |
45 | @_match = (); | |
d8f2e4cc | 46 | foreach $cmp (@_cmp_lst) { |
a687059c LW |
47 | push (@_match, $cmp) if $cmp =~ /^$return/; |
48 | } | |
49 | $test = $_match[0]; | |
50 | $l = length ($test); | |
51 | unless ($#_match == 0) { | |
52 | shift (@_match); | |
53 | foreach $cmp (@_match) { | |
54 | until (substr ($cmp, 0, $l) eq substr ($test, 0, $l)) { | |
55 | $l--; | |
56 | } | |
57 | } | |
58 | print "\007"; | |
59 | } | |
60 | print $test = substr ($test, $r, $l - $r); | |
61 | $r = length ($return .= $test); | |
62 | } | |
7e1cf235 | 63 | elsif ($c eq $complete) { # (^D) completion list |
a687059c | 64 | print "\r\n"; |
d8f2e4cc | 65 | foreach $cmp (@_cmp_lst) { |
a687059c LW |
66 | print "$cmp\r\n" if $cmp =~ /^$return/; |
67 | } | |
68 | redo loop; | |
69 | } | |
7e1cf235 | 70 | elsif ($c eq $kill && $r) { # (^U) kill |
a687059c LW |
71 | $return = ''; |
72 | $r = 0; | |
73 | print "\r\n"; | |
74 | redo loop; | |
75 | } | |
76 | # (DEL) || (BS) erase | |
7e1cf235 | 77 | elsif ($c eq $erase1 || $c eq $erase2) { |
a687059c LW |
78 | if($r) { |
79 | print "\b \b"; | |
80 | chop ($return); | |
81 | $r--; | |
82 | } | |
83 | } | |
84 | elsif ($c =~ /\S/) { # printable char | |
85 | $return .= $c; | |
86 | $r++; | |
87 | print $c; | |
88 | } | |
89 | } | |
90 | } | |
91 | system 'stty -raw echo'; | |
92 | print "\n"; | |
93 | $return; | |
94 | } | |
95 | ||
96 | 1; |