Commit | Line | Data |
a0d0e21e |
1 | package Term::Complete; |
2 | require 5.000; |
3 | require Exporter; |
4 | |
5 | @ISA = qw(Exporter); |
6 | @EXPORT = qw(Complete); |
7 | |
a0d0e21e |
8 | # @(#)complete.pl,v1.1 (me@anywhere.EBay.Sun.COM) 09/23/91 |
cb1a09d0 |
9 | |
10 | =head1 NAME |
11 | |
12 | Term::Complete - Perl word completion module |
13 | |
14 | =head1 SYNOPSIS |
15 | |
2ab1b485 |
16 | $input = Complete('prompt_string', \@completion_list); |
17 | $input = Complete('prompt_string', @completion_list); |
cb1a09d0 |
18 | |
19 | =head1 DESCRIPTION |
20 | |
21 | This routine provides word completion on the list of words in |
22 | the array (or array ref). |
23 | |
24 | The tty driver is put into raw mode using the system command |
25 | C<stty raw -echo> and restored using C<stty -raw echo>. |
26 | |
27 | The following command characters are defined: |
28 | |
29 | =over 4 |
30 | |
1fef88e7 |
31 | =item E<lt>tabE<gt> |
3fe9a6f1 |
32 | |
cb1a09d0 |
33 | Attempts word completion. |
34 | Cannot be changed. |
35 | |
36 | =item ^D |
37 | |
38 | Prints completion list. |
39 | Defined by I<$Term::Complete::complete>. |
40 | |
41 | =item ^U |
42 | |
43 | Erases the current input. |
44 | Defined by I<$Term::Complete::kill>. |
45 | |
1fef88e7 |
46 | =item E<lt>delE<gt>, E<lt>bsE<gt> |
cb1a09d0 |
47 | |
48 | Erases one character. |
49 | Defined by I<$Term::Complete::erase1> and I<$Term::Complete::erase2>. |
50 | |
51 | =back |
52 | |
53 | =head1 DIAGNOSTICS |
54 | |
55 | Bell sounds when word completion fails. |
56 | |
57 | =head1 BUGS |
58 | |
1fef88e7 |
59 | The completion charater E<lt>tabE<gt> cannot be changed. |
cb1a09d0 |
60 | |
61 | =head1 AUTHOR |
62 | |
63 | Wayne Thompson |
64 | |
65 | =cut |
a0d0e21e |
66 | |
67 | CONFIG: { |
68 | $complete = "\004"; |
69 | $kill = "\025"; |
70 | $erase1 = "\177"; |
71 | $erase2 = "\010"; |
72 | } |
73 | |
f06db76b |
74 | sub Complete { |
55497cff |
75 | my($prompt, @cmp_list, $return, @match, $l, $test, $cmp, $r); |
76 | |
2ab1b485 |
77 | $return = ""; |
78 | $r = 0; |
79 | |
a0d0e21e |
80 | $prompt = shift; |
81 | if (ref $_[0] || $_[0] =~ /^\*/) { |
82 | @cmp_lst = sort @{$_[0]}; |
83 | } |
84 | else { |
85 | @cmp_lst = sort(@_); |
86 | } |
87 | |
88 | system('stty raw -echo'); |
89 | LOOP: { |
90 | print($prompt, $return); |
91 | while (($_ = getc(STDIN)) ne "\r") { |
92 | CASE: { |
93 | # (TAB) attempt completion |
94 | $_ eq "\t" && do { |
95 | @match = grep(/^$return/, @cmp_lst); |
96 | $l = length($test = shift(@match)); |
97 | unless ($#match < 0) { |
98 | foreach $cmp (@match) { |
99 | until (substr($cmp, 0, $l) eq substr($test, 0, $l)) { |
100 | $l--; |
101 | } |
102 | } |
103 | print("\a"); |
104 | } |
105 | print($test = substr($test, $r, $l - $r)); |
106 | $r = length($return .= $test); |
107 | last CASE; |
108 | }; |
109 | |
110 | # (^D) completion list |
111 | $_ eq $complete && do { |
112 | print(join("\r\n", '', grep(/^$return/, @cmp_lst)), "\r\n"); |
113 | redo LOOP; |
114 | }; |
115 | |
116 | # (^U) kill |
117 | $_ eq $kill && do { |
118 | if ($r) { |
2ab1b485 |
119 | $r = 0; |
120 | $return = ""; |
a0d0e21e |
121 | print("\r\n"); |
122 | redo LOOP; |
123 | } |
124 | last CASE; |
125 | }; |
126 | |
127 | # (DEL) || (BS) erase |
128 | ($_ eq $erase1 || $_ eq $erase2) && do { |
129 | if($r) { |
130 | print("\b \b"); |
131 | chop($return); |
132 | $r--; |
133 | } |
134 | last CASE; |
135 | }; |
136 | |
137 | # printable char |
138 | ord >= 32 && do { |
139 | $return .= $_; |
140 | $r++; |
141 | print; |
142 | last CASE; |
143 | }; |
144 | } |
145 | } |
146 | } |
147 | system('stty -raw echo'); |
148 | print("\n"); |
149 | $return; |
150 | } |
151 | |
152 | 1; |
153 | |