Zlib decompression - Any ideas?

[Mark Smith]

One last idea - what does the data actually look like? If you examine  
the files and find that the first n bytes are the same in each one,  
it may be possible to simply strip off that n bytes and pass the rest  
to 'decompress'...

Best,

Mark

ps. I suppose it might be an idea to ask about the format of  
'TCompressedstreams' (or whatever it was) in a Delphi forum.

On 29 Dec 2008, at 23:50, Ken Ray wrote:

>> Can you compress a copy of the original file with Rev, and compare it
>> to the zlib compressed copy? Does the data look totally different, or
>> maybe just off by a few bytes / headers?
>
> Unfortunately, I don't have the original file... the files I'm  
> receiving are
> from another program on Windows that only decompresses the data in  
> memory;
> the files on disk are always in a compressed state, so the files I  
> can look
> at are always compressed.
>
>> If you have a MacOS X machine (or Linux) handy, you can use gzip and
>> gunzip as command-line equivalents of compress() and decompress() and
>> see how those results compare as well...
>
> Yeah, I've tried that already and keep getting errors that the data  
> is "not
> compressed".
>
> :-(
>
> Ken Ray
> Sons of Thunder Software, Inc.
> Email: kray at sonsothunder.com
> Web Site: http://www.sonsothunder.com/
>
>
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