view release on metacpan or  search on metacpan

bin/nl2idl  view on Meta::CPAN

    my %opts = %$optsref;
    foreach my $opt (keys(%opts)) {
        print STDERR "\$opts{$opt} = `$opts{$opt}'\n";
    }
}
# ---------------------------------------------------------------------- #

sub usage {
# Extract description and usage information from this file's header.
    my $thisfile = __FILE__;
    local $/ = '';              # Read paragraphs
    open(FILE, "<$thisfile") or die "Cannot open $thisfile\n";
    while (<FILE>) {
        # Paragraph _must_ contain `Description:' or `Usage:'
        next unless /^\s*\#\s*(Description|Usage):/m;
        # Drop `Author:', etc. (anything before `Description:' or `Usage:')
        s/.*?\n(\s*\#\s*(Description|Usage):\s*\n.*)/$1/s;
        # Don't print comment sign:
        s/^\s*# ?//mg;
        last;                        # ignore body
    }