xref: /onnv-gate/usr/src/cmd/perl/5.8.4/distrib/lib/abbrev.pl (revision 0:68f95e015346)
1;# Usage:
2;#	%foo = ();
3;#	&abbrev(*foo,LIST);
4;#	...
5;#	$long = $foo{$short};
6
7#
8# This library is no longer being maintained, and is included for backward
9# compatibility with Perl 4 programs which may require it.
10#
11# In particular, this should not be used as an example of modern Perl
12# programming techniques.
13#
14# Suggested alternative: Text::Abbrev
15#
16
17package abbrev;
18
19sub main'abbrev {
20    local(*domain) = @_;
21    shift(@_);
22    @cmp = @_;
23    local($[) = 0;
24    foreach $name (@_) {
25	@extra = split(//,$name);
26	$abbrev = shift(@extra);
27	$len = 1;
28	foreach $cmp (@cmp) {
29	    next if $cmp eq $name;
30	    while (@extra && substr($cmp,0,$len) eq $abbrev) {
31		$abbrev .= shift(@extra);
32		++$len;
33	    }
34	}
35	$domain{$abbrev} = $name;
36	while ($#extra >= 0) {
37	    $abbrev .= shift(@extra);
38	    $domain{$abbrev} = $name;
39	}
40    }
41}
42
431;
44