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Re: [libredwg] R2007 header decoding

From: Felipe Sanches
Subject: Re: [libredwg] R2007 header decoding
Date: Tue, 22 Jun 2010 11:17:19 +0200

we should save a backup of this broken release of the new spec and
contact them asking for a fixed version.

It is also very important to keep a backup copy of the previous
version of the spec since they seem to have removed it from the
website (am I wrong?). I think I have the file in my laptop at home,
but I am not able to check it right now because I am travelling at the

On Tue, Jun 22, 2010 at 7:20 AM, Rodrigo Rodrigues da Silva
<address@hidden> wrote:
> On 20-06-2010 12:31, Till Heuschmann wrote:
>> Hi All.
>> Have you noticed that there is a new version of the specs available?
>> The new version contains informations about r2007 header compression and
>> r2010 fields in objects.
> It looks like there's nothing about R2010 file structure (section 6 is
> empty). Although, there's information on R2010 object fields.
>> Recently we got stuck with r2007 rs decoding which turns out is not the
>> problem (ignoring the rs-parity bytes the data bytes can be used as they
>> are!) but the compression of the headers. Fortunately the compression
>> algorithms are covered (~90% of them, the spec-document seems to be
>> broken ;) )
>> I will spend some time with the headers. Is someone else working in this
>> area?
> Are you going to work on R2010 header decoding as well? I can update
> dwg.spec - the updated specs can also give us a light on obscure fields and
> objects.
> --
> Rodrigo Rodrigues da Silva
> GNU LibreDWG maintainer
> FSF Associate Member #7788
> PoliGNU - Grupo de Estudos de Software Livre da Poli/USP

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