support/cull_options

   1 #!/usr/bin/perl
   2 # This script outputs some perl code that parses all possible options
   3 # that the code in options.c might send to the server.  This perl code
   4 # is included in the rrsync script.
   5 use strict;
   6
   7 our %short_no_arg;
   8 our %short_with_num;
   9 our %long_opt = (
  10     'no-i-r' => 0,
  11     'fake-super' => 0,
  12     'log-file' => 3,
  13 );
  14 our $last_long_opt;
  15
  16 open(IN, '../options.c') or die "Unable to open ../options.c: $!\n";
  17
  18 while (<IN>) {
  19     if (/\Qargstr[x++]\E = '([^.ie])'/) {
  20         $short_no_arg{$1} = 1;
  21         undef $last_long_opt;
  22     } elsif (/\Qasprintf(\E[^,]+, "-([a-zA-Z0-9])\%l?[ud]"/) {
  23         $short_with_num{$1} = 1;
  24         undef $last_long_opt;
  25     } elsif (/\Qargs[ac++]\E = "--([^"=]+)"/) {
  26         $last_long_opt = $1;
  27         $long_opt{$1} = 0;
  28     } elsif (defined($last_long_opt)
  29         && /\Qargs[ac++]\E = ([^["\s]+);/ && $1 ne 'dest_option') {
  30         $long_opt{$last_long_opt} = 2;
  31         undef $last_long_opt;
  32     } elsif (/dest_option = "--([^"]+)"/) {
  33         $long_opt{$1} = 2;
  34         undef $last_long_opt;
  35     } elsif (/\Qasprintf(\E[^,]+, "--([^"=]+)=/ || /\Qargs[ac++]\E = "--([^"=]+)=/) {
  36         $long_opt{$1} = 1;
  37         undef $last_long_opt;
  38     }
  39 }
  40 close IN;
  41
  42 my $short_no_arg = join('', sort keys %short_no_arg);
  43 my $short_with_num = join('', sort keys %short_with_num);
  44
  45 print <<EOT;
  46
  47 # These options are the only options that rsync might send to the server,
  48 # and only in the option format that the stock rsync produces.
  49
  50 # To disable a short-named option, add its letter to this string:
  51 our \$short_disabled = 's';
  52
  53 our \$short_no_arg = '$short_no_arg'; # DO NOT REMOVE ANY
  54 our \$short_with_num = '$short_with_num'; # DO NOT REMOVE ANY
  55
  56 # To disable a long-named option, change its value to a -1.  The values mean:
  57 # 0 = the option has no arg; 1 = the arg doesn't need any checking; 2 = only
  58 # check the arg when receiving; and 3 = always check the arg.
  59 our \%long_opt = (
  60 EOT
  61
  62 foreach my $opt (sort keys %long_opt) {
  63     my $val = $long_opt{$opt};
  64     $val = 1 if $opt =~ /^(max-|min-)/;
  65     $val = 3 if $opt eq 'files-from';
  66     $val = '$ro ? -1 : ' . $val if $opt =~ /^remove-/;
  67     print "  '$opt' => $val,\n";
  68 }
  69
  70 print ");\n\n";