Copying Mac Resource Forks with Perl

The company I'm working for now uses Director to write PC/Mac applications. We're working on a web install process, and have the problem that if we move a Mac executable to our Linux web server, we lose the resource fork unless we use Stuffit first.

We found a Director Xtra that lets us open the resource and data forks separately and save them as separate files to put on the install server, then recombine them in the Mac install client.

I then wanted to write a Perl script to split all the Mac files up, so I didn't have to use Director, which I hate working with. I used the following.

  my($infoFile) = $f . '.info';
  my($rsrcFile) = $f . '.rsrc';
  my($rsrcFork) = $f . '/rsrc';
  my($dataFile) = $f . '.data';
  open(INFO, ">$infoFile") or die "Can't open $infoFile: $@";
  printInfo(getInfo($f));
  system("ditto",, "--norsrc", $f, $dataFile);
  system("cp", $rsrcFork, $rsrcFile);
  system("rm", $f);
 

getInfo uses the MacOSX::File module to get the type, flags, and creator, and printInfo just writes them in a format the install client can read.

 my($finfo) = MacOSX::File::Info->get($f);
 $info{"type"} = $finfo->type;
 $info{"Flags"} = sprintf("%016b",$finfo->fdFlags);
 $info{"creator"} = $finfo->creator;
 return(\%info);
 

The entire script:

#!/usr/bin/perl

use strict;
use MacOSX::File::Info;

sub getInfo($);
sub printInfo($;$);
sub walkDir($);

my($dir) = $ARGV[0];

walkDir($dir);

sub getInfo($)  {
  my($f) = $_[0];
  my(%info);
  my($finfo) = MacOSX::File::Info->get($f);
  $info{"type"} = $finfo->type;
  $info{"Flags"} = sprintf("%016b",$finfo->fdFlags);
  $info{"creator"} = $finfo->creator;
  return(\%info);
}

sub printInfo($;$)  {
  my($info, $fh) = @_[0,1];
  my($comma) = "";
  my($outString) = '[';
  foreach my $k (sort(keys(%$info)))  {
     $outString .= "$comma#$k: " . '"' . $$info{$k} . '"';
     $comma = ", ";
  }
  print INFO $outString, "]\n";
}


#------------------------------------------------------
# Walk Dir
#------------------------------------------------------
sub walkDir($) {
  my ($dir) = $_[0];
  my(@files,$nam,$lvldir);

  opendir STDIR,$dir;
  @files = readdir STDIR;
  closedir STDIR;

  foreach $nam (@files)
  {
     next if (substr($nam,0,1) eq '.');

     $lvldir = "$dir/$nam";

     if (-d $lvldir)  {
        walkDir($lvldir);

     } else {
        my($infoFile) = $lvldir . '.info';
        my($rsrcFile) = $lvldir . '.rsrc';
        my($rsrcFork) = $lvldir . '/rsrc';
        my($dataFile) = $lvldir . '.data';
        open(INFO, ">$infoFile") or die "Can't open $infoFile: $@";
        printInfo(getInfo($lvldir));
        system("ditto",, "--norsrc", $lvldir, $dataFile);
        system("cp", $rsrcFork, $rsrcFile);
        system("rm", $lvldir);
     }

  }
}
 

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Sat Jan 7 13:42:04 2006: 1484   TonyLawrence


One thing to watch here: on UFS file systems, Mac doesn't use filename/rsrc





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