🚀 go-pugleaf

Dear Kevin.
Then I have a serious possession.  
Because the application developed in Delphi uses a format proprietor to record the header, and my problem is exactly to read this header, the compacted data I am not having problem with them, it is enough to ignore the data of the header. But I need to read that header with Java to manipulate the data that were migrated of a legated system, that they are not compacted, but they were recorded with that header. A solution not very elegant it would be to write a .SO in Kylix that makes that work, but I would like to implement a solution purely Java.

I appreciate your help in advance,

Ronaldo.


"Kevin Dean [TeamB]" <NkOdSePaAnM@datadevelopment.com> wrote:
>Ronaldo wrote:
>
>> 
>> Hi all !! My name is Ronaldo. I4m from Brazil.
>> Im having a hard time on reading a file generated by a Software
>> created through Delphi, its not a regular text file, though it is a
>> file that was generated by a component, which main goal is to
>> compress any file using a Zlib, and then to save the bytes from that
>> compressed file as binary fields. That was just a brief introduction
>> so as you can have an idea of the general issue My real problem is
>> reading the header and the footer generated by that component (I do
>> not have any problem in reading and decompressing the data compressed
>> with Zlib). At that header, there is information, such as backup
>> title, size of the backup title, total bytes from the original file,
>> total files in backup, the size in bytes of the path + name of the
>> file that was compressed, path + name of the file compressed, date &
>> time of last update on that file, and a signature EC2 or ECS,
>> where the first one indicates that the content is compressed, and the
>> second one indicates that is not The component writes some data with
>> more frequency; if I manage to read those, I think Ill be able of
>> reading the others. I created a Delphi code very simple in order to
>> generate that header, and another one, to read it. I did the same in
>> Java. However, what I generate in Delphi, cannot be read in Java, and
>> vice versa.  Im going to leave here the source codes in Java and
>> Delphi, in case someone can help me out. Probably somebody already
>> passed through this issue, or at least knows both languages.
>> 
>> I appreciate your help in advance, and apologize for the size of this
>> message.
>
>Without going into your code in too much detail, I would guess that the
>problem you're experiencing is byte order.  Delphi is Intel-based and
>so writes/reads the low byte first; Java is platform-independent and
>writes/reads the high byte first.
>
>I strongly suggest that if you're trying to write code to read a ZIP
>file that you start with a known good ZIP file, run it through the
>Delphi and Java readers, and determine which one breaks.  Creating a
>file with one language and reading it with another doesn't tell you
>which one is at fault; you need the independent arbiter of a known good
>ZIP file.
>
>-- 
>Kevin Dean [TeamB]
>Dolphin Data Development Ltd.
>http://www.datadevelopment.com/
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