source: trunk/third/perl/lib/getopts.pl @ 14545

;# getopts.pl - a better getopt.pl
#
# This library is no longer being maintained, and is included for backward
# compatibility with Perl 4 programs which may require it.
#
# In particular, this should not be used as an example of modern Perl
# programming techniques.
#
# Suggested alternatives: Getopt::Long  or  Getopt::Std
#
;# Usage:
;#      do Getopts('a:bc');  # -a takes arg. -b & -c not. Sets opt_* as a
;#                           #  side effect.

sub Getopts {
    local($argumentative) = @_;
    local(@args,$_,$first,$rest);
    local($errs) = 0;

    @args = split( / */, $argumentative );
    while(@ARGV && ($_ = $ARGV[0]) =~ /^-(.)(.*)/) {
        ($first,$rest) = ($1,$2);
        $pos = index($argumentative,$first);
        if($pos >= 0) {
            if($pos < $#args && $args[$pos+1] eq ':') {
                shift(@ARGV);
                if($rest eq '') {
                    ++$errs unless @ARGV;
                    $rest = shift(@ARGV);
                }
                ${"opt_$first"} = $rest;
            }
            else {
                ${"opt_$first"} = 1;
                if($rest eq '') {
                    shift(@ARGV);
                }
                else {
                    $ARGV[0] = "-$rest";
                }
            }
        }
        else {
            print STDERR "Unknown option: $first\n";
            ++$errs;
            if($rest ne '') {
                $ARGV[0] = "-$rest";
            }
            else {
                shift(@ARGV);
            }
        }
    }
    $errs == 0;
}

1;