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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. |
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10 | ;# (These may be changed by setting $Complete'complete, etc.) |
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11 | ;# |
12 | ;# Diagnostics: |
13 | ;# Bell when word completion fails. |
14 | ;# |
15 | ;# Dependencies: |
16 | ;# The tty driver is put into raw mode. |
17 | ;# |
18 | ;# Bugs: |
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19 | ;# |
20 | ;# Usage: |
21 | ;# $input = do Complete('prompt_string', @completion_list); |
22 | ;# |
23 | |
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24 | CONFIG: { |
25 | package Complete; |
26 | |
27 | $complete = "\004"; |
28 | $kill = "\025"; |
29 | $erase1 = "\177"; |
30 | $erase2 = "\010"; |
31 | } |
32 | |
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33 | sub Complete { |
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34 | package Complete; |
35 | |
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36 | local ($prompt) = shift (@_); |
37 | local ($c, $cmp, $l, $r, $ret, $return, $test); |
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38 | @_cmp_lst = sort @_; |
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39 | local($[) = 0; |
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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 = (); |
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46 | foreach $cmp (@_cmp_lst) { |
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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 .= $test); |
62 | } |
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63 | elsif ($c eq $complete) { # (^D) completion list |
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64 | print "\r\n"; |
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65 | foreach $cmp (@_cmp_lst) { |
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66 | print "$cmp\r\n" if $cmp =~ /^$return/; |
67 | } |
68 | redo loop; |
69 | } |
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70 | elsif ($c eq $kill && $r) { # (^U) kill |
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71 | $return = ''; |
72 | $r = 0; |
73 | print "\r\n"; |
74 | redo loop; |
75 | } |
76 | # (DEL) || (BS) erase |
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77 | elsif ($c eq $erase1 || $c eq $erase2) { |
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78 | if($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; |