50 lines
942 B
Perl
50 lines
942 B
Perl
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;# getopts.pl - a better getopt.pl
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;# Usage:
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;# do Getopts('a:bc'); # -a takes arg. -b & -c not. Sets opt_* as a
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;# # side effect.
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sub Getopts {
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local($argumentative) = @_;
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local(@args,$_,$first,$rest);
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local($errs) = 0;
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@args = split( / */, $argumentative );
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while(@ARGV && ($_ = $ARGV[0]) =~ /^-(.)(.*)/) {
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($first,$rest) = ($1,$2);
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$pos = index($argumentative,$first);
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if($pos >= 0) {
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if($pos < $#args && $args[$pos+1] eq ':') {
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shift(@ARGV);
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if($rest eq '') {
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++$errs unless @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 eq '') {
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shift(@ARGV);
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}
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else {
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$ARGV[0] = "-$rest";
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}
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}
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}
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else {
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print STDERR "Unknown option: $first\n";
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++$errs;
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if($rest ne '') {
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$ARGV[0] = "-$rest";
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}
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else {
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shift(@ARGV);
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}
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}
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}
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$errs == 0;
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}
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1;
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