Re: Resource Fork - is this a good use/the right thing to do?
Re: Resource Fork - is this a good use/the right thing to do?
- Subject: Re: Resource Fork - is this a good use/the right thing to do?
- From: Daniel DeCovnick <email@hidden>
- Date: Thu, 24 Apr 2008 11:28:47 -0400
Er... either my calculator's broken or (65535 - 30 - 8 )/12 = 5458,
not 2727, where 30 and 8 are the resource map header and a single
reference type.
-Dan
On Apr 24, 2008, at 8:41 AM, glenn andreas wrote:
On Apr 24, 2008, at 6:08 AM, Daniel DeCovnick wrote:
The tips are appreciated. AFAICT, the limit on total resource sizes
is within a kB or 2 of 2 or 4 GB, with the limitation that the last
resource must start within the first ~16 MB. Given the fact that
the files I'm opening are in the 1-300k range, I suspect I have
bigger problems than the resource file format if I start to
approach that limit.
One thing I can't figure out though... why is the limit 2727?
Assuming you have only 1 resource type and no names, you can fit
exactly twice that many references in the map. It's not relevant to
my problem, but I am curious.
Each resource entry is a 12 byte structure (2 byte ID, 2 byte offset
to name, 1 byte flag, 3 byte offset to data, 4 bytes used as handle
when loaded into memory). Combined with 2 byte offset limit on the
size of the resource entry list, that gives 65535 / 12 = 2727.
Glenn Andreas email@hidden
<http://www.gandreas.com/> wicked fun!
Cardographer | the custom playing card designer
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