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   1  ;# getopts.pl - a better getopt.pl
   2  #
   3  # This library is no longer being maintained, and is included for backward
   4  # compatibility with Perl 4 programs which may require it.
   5  #
   6  # In particular, this should not be used as an example of modern Perl
   7  # programming techniques.
   8  #
   9  # Suggested alternatives: Getopt::Long  or  Getopt::Std
  10  #
  11  ;# Usage:
  12  ;#      do Getopts('a:bc');  # -a takes arg. -b & -c not. Sets opt_* as a
  13  ;#                           #  side effect.
  14  
  15  sub Getopts {
  16      local($argumentative) = @_;
  17      local(@args,$_,$first,$rest);
  18      local($errs) = 0;
  19      local($[) = 0;
  20  
  21      @args = split( / */, $argumentative );
  22      while(@ARGV && ($_ = $ARGV[0]) =~ /^-(.)(.*)/) {
  23          ($first,$rest) = ($1,$2);
  24          $pos = index($argumentative,$first);
  25          if($pos >= $[) {
  26              if($args[$pos+1] eq ':') {
  27                  shift(@ARGV);
  28                  if($rest eq '') {
  29                      ++$errs unless(@ARGV);
  30                      $rest = shift(@ARGV);
  31                  }
  32                  eval "
  33                  push(\@opt_$first, \$rest);
  34                  if (!defined \$opt_$first or \$opt_$first eq '') {
  35                      \$opt_$first = \$rest;
  36                  }
  37                  else {
  38                      \$opt_$first .= ' ' . \$rest;
  39                  }
  40                  ";
  41              }
  42              else {
  43                  eval "\$opt_$first = 1";
  44                  if($rest eq '') {
  45                      shift(@ARGV);
  46                  }
  47                  else {
  48                      $ARGV[0] = "-$rest";
  49                  }
  50              }
  51          }
  52          else {
  53              print STDERR "Unknown option: $first\n";
  54              ++$errs;
  55              if($rest ne '') {
  56                  $ARGV[0] = "-$rest";
  57              }
  58              else {
  59                  shift(@ARGV);
  60              }
  61          }
  62      }
  63      $errs == 0;
  64  }
  65  
  66  1;