• Zarathustra (8/8) Nov 12 2010 Maybe it is a stupid question but I need yours help.
• div0 (11/19) Nov 12 2010 A Gzipp'd file will start with a Gzip header and the uncompress function...
• Zarathustra (7/7) Nov 13 2010 Thanks for a tip, but it's still does not work.
• Zarathustra (3/3) Nov 13 2010 Ok, I found the solution:

Zarathustra <adam.chrapkowski yahoo.com> writes:

Maybe it is a stupid question but I need yours help.
As in the topic. I have a Gzip archive in the buffer and I need to extract
these archive into another buffer.

I tried: void[] _uncompressed = uncompress(_compressed);

but it throws 'std.zlib.ZlibException: data error.'

Is it possible to do with Phobos2 ? The archive is not corrupted because It
works fine after saving on the disk.

Thanks in advance.

div0 <div0 sourceforge.net> writes:

On 12/11/2010 23:33, Zarathustra wrote:
 Maybe it is a stupid question but I need yours help.
 As in the topic. I have a Gzip archive in the buffer and I need to extract
 these archive into another buffer.

 I tried: void[] _uncompressed = uncompress(_compressed);

 but it throws 'std.zlib.ZlibException: data error.'

 Is it possible to do with Phobos2 ? The archive is not corrupted because It
 works fine after saving on the disk.

 Thanks in advance.

A Gzipp'd file will start with a Gzip header and the uncompress function 
(probably) expects to be given a pointer the first byte of the 
compressed data, i.e. not a pointer to the header.

You probably just need to add an offset == to the size of the gzip 
header to the start of your data.

There's a full interface to zlib available in phobo\etc\c\zlib.d. so 
have a look through there.

-- 
My enormous talent is exceeded only by my outrageous laziness.
http://www.ssTk.co.uk

Zarathustra <adam.chrapkowski yahoo.com> writes:

Thanks for a tip, but it's still does not work.
My test gzip file have 10 (minimum gzip header) header bytes and 8 trailing
bytes,
so I tried:
auto _uncompressed = uncompress(_compressed[0x0A.._compressed.length - 0x08]);

But the exception still occurs. Maybe the compressed data need to be aligned in
some boundary or something.
Please for help.

Zarathustra <adam.chrapkowski yahoo.com> writes:

Ok, I found the solution:

_uncompressed = uncompress(_compressed,
*cast(uint*)&_compressed[_compressed.length-4], 30);