[sword-devel] Zipfile module downloads

[DM Smith]

Found out a bit more:
Sword uses a 2002 copy of zlib. It has been updated since then with  
bug, security and performance fixes.

On Sep 20, 2007, at 10:02 PM, DM Smith wrote:

> More results of exploration:
>
> At zlib.net, the home of the zlib code, there is a faq question  
> regarding zip archives with a recommended solution:
>
>     11. Can zlib handle .zip archives?
>            Not by itself, no. See the directory contrib/minizip in  
> the zlib distribution.
>
> Minizip is what I found by other searches. It's home is at:
> http://www.winimage.com/zLibDll/minizip.html
>
> It appears that it requires only a few files to do unzip of an  
> archive.
>
> What do I need to do to continue on this track? I don't want my  
> efforts to go to waste. I realize this might not make a 1.5.10  
> effort, unless it is incredibly easy and fully testable :)
>
> In Him,
> 	DM
>
> On Sep 20, 2007, at 6:59 PM, DM Smith wrote:
>
>> Troy,
>> 	I studied the untargz code and all the other code in the zlib
>> directory. It does not apply to zip files. A zipfile has a table of
>> contents and the zlib code does not read it. An entry in the TOC will
>> have the location of the file and it's size in the zipfile and how it
>> is stored. (Typically, images are stored uncompressed.) IIRC, the TOC
>> also has CRC info. I'm looking for code that reads the TOC. I have
>> found some, but I'm wondering if anyone else has seen something that
>> they can recommend.
>>
>> 	The zlib code essentially reads a byte stream and uncompresses it.
>> There is also code present to untar a stream.
>> DM
>>
>> On Sep 20, 2007, at 6:21 PM, Troy A. Griffitts wrote:
>>
>>> There is already code to unpack the mods.d.tar.gz file.  I believe
>>> the code
>>> we used for that came from the zlib project.  It may be similar to
>>> what you
>>> need to do for a zip file.  I can't remember offhand.
>>>
>>>
>>> DM Smith <dmsmith555 at yahoo.com> wrote:
>>>> I'm looking into adding to installmgr the download of a cached  
>>>> zipped
>>>> module, if present at the download site. Otherwise the code will
>>>> work as
>>>> before.
>>>>
>>>> I've run into an obstacle: zlib cannot read the "table of
>>>> contents" in a
>>>> zipfile. I'm looking for a portable way to do the unzip. Any
>>>> suggestions?
>>>>
>>>> Many thanks,
>>>>    DM
>>>>
>>>> _______________________________________________
>>>> sword-devel mailing list: sword-devel at crosswire.org
>>>> http://www.crosswire.org/mailman/listinfo/sword-devel
>>>> Instructions to unsubscribe/change your settings at above page
>>>>
>>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> sword-devel mailing list: sword-devel at crosswire.org
>>> http://www.crosswire.org/mailman/listinfo/sword-devel
>>> Instructions to unsubscribe/change your settings at above page
>>
>>
>> _______________________________________________
>> sword-devel mailing list: sword-devel at crosswire.org
>> http://www.crosswire.org/mailman/listinfo/sword-devel
>> Instructions to unsubscribe/change your settings at above page
>
> _______________________________________________
> sword-devel mailing list: sword-devel at crosswire.org
> http://www.crosswire.org/mailman/listinfo/sword-devel
> Instructions to unsubscribe/change your settings at above page

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.crosswire.org/pipermail/sword-devel/attachments/20070920/7343f5ac/attachment.html