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378cc40b LW |
1 | ;# $Header: getopt.pl,v 2.0 88/06/05 00:16:22 root Exp $ |
2 | ||
3 | ;# Process single-character switches with switch clustering. Pass one argument | |
4 | ;# which is a string containing all switches that take an argument. For each | |
5 | ;# switch found, sets $opt_x (where x is the switch name) to the value of the | |
6 | ;# argument, or 1 if no argument. Switches which take an argument don't care | |
7 | ;# whether there is a space between the switch and the argument. | |
8 | ||
9 | ;# Usage: | |
10 | ;# do Getopt('oDI'); # -o, -D & -I take arg. Sets opt_* as a side effect. | |
11 | ||
12 | sub Getopt { | |
13 | local($argumentative) = @_; | |
14 | local($_,$first,$rest); | |
15 | ||
16 | while (($_ = $ARGV[0]) =~ /^-(.)(.*)/) { | |
17 | ($first,$rest) = ($1,$2); | |
18 | if (index($argumentative,$first) >= $[) { | |
19 | if ($rest ne '') { | |
20 | shift; | |
21 | } | |
22 | else { | |
23 | shift; | |
24 | $rest = shift; | |
25 | } | |
26 | eval "\$opt_$first = \$rest;"; | |
27 | } | |
28 | else { | |
29 | eval "\$opt_$first = 1;"; | |
30 | if ($rest ne '') { | |
31 | $ARGV[0] = "-$rest"; | |
32 | } | |
33 | else { | |
34 | shift; | |
35 | } | |
36 | } | |
37 | } | |
38 | } |