42 lines
1.0 KiB
Perl
42 lines
1.0 KiB
Perl
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;# $RCSfile: getopt.pl,v $$Revision: 4.1 $$Date: 92/08/07 18:23:58 $
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;# Process single-character switches with switch clustering. Pass one argument
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;# which is a string containing all switches that take an argument. For each
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;# switch found, sets $opt_x (where x is the switch name) to the value of the
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;# argument, or 1 if no argument. Switches which take an argument don't care
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;# whether there is a space between the switch and the argument.
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;# Usage:
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;# do Getopt('oDI'); # -o, -D & -I take arg. Sets opt_* as a side effect.
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sub Getopt {
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local($argumentative) = @_;
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local($_,$first,$rest);
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local($[) = 0;
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while (@ARGV && ($_ = $ARGV[0]) =~ /^-(.)(.*)/) {
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($first,$rest) = ($1,$2);
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if (index($argumentative,$first) >= $[) {
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if ($rest ne '') {
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shift(@ARGV);
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}
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else {
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shift(@ARGV);
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$rest = shift(@ARGV);
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}
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${"opt_$first"} = $rest;
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}
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else {
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${"opt_$first"} = 1;
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if ($rest ne '') {
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$ARGV[0] = "-$rest";
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}
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else {
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shift(@ARGV);
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}
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}
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}
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}
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1;
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