Re: [MacPerl] how to get VREF with macperl?

[Chris Nandor <pudge@pobox.com>]

At 14.08 -0500 2000.02.18, David Ackerman wrote:
>I hope someone can point me in the right direction with this.  I'm trying
>to use the  FindFolder() function from Files.pm.  It requires as the first
>param the Volume ref number you wish to serach on.  The only examples I
>can fine use the kOnSystemDisk constant.  However I need to search on
>whatever volume the user saves another file to.  I've looked through
>Inside Macintosh and found the GetVRefNum () funtion, but can not find
>that function documented in the perl toolbox modules.  What is the
>prefered method of getting the volume ref number in macperl?

Well, here is a hack I came up with awhile back.

#!perl -wl
use Mac::Files;
use Mac::MoreFiles;
use strict;

# ex 1
for my $vol (MacPerl::Volumes()) {
    print FindFolder(hex(substr($vol, 1, 4)), kTrashFolderType);
}

# ex 2
my $file = 'Bourque:Desktop Folder:mytestfile';
(my $vol = $file) =~ s/^(.*?:).*$/$1/;

print FindFolder(hex(substr(MacPerl::MakeFSSpec($vol), 1, 4)),
    kTrashFolderType);

__END__


That is, you can loop over MacPerl::Volumes() to get the VREF for each:

#!perl -wl
for my $vol (MacPerl::Volumes()) {
   (my $name = $vol) =~ s/^[^:]+://;
   printf "%-32s: %s\n", $name, hex substr $vol, 1, 4;
}
__END__

That should do it.

-- 
Chris Nandor          mailto:pudge@pobox.com         http://pudge.net/
%PGPKey = ('B76E72AD', [1024, '0824090B CE73CA10  1FF77F13 8180B6B6'])

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