gzread -2 error with Qt for symbian

[NishaElsa]

Hi
I am trying to develop an application that reads a gziped http response from a http server, uncompress it and interpret the data. I am working on Symbian 5th edition SDK with Qt version 4.6.2.

I have a gzip compressed data in a QByteArray. I am using gzread() method of zlib library to uncompress it.
But gzread() is returing the number of bytes read as -2. When i call gzerror() with the same bytearray to get the error code, i am getting a user 42 panic. Can anyone help me in this?

Below in my code snippet

// response is a QByteArray that has a gzip compressed data.
// byteSize is an unsigned integer that has the size of the uncompressed data
QByteArray uncompressedData;

int readBytes = gzread(response.data(), uncompressedData.data(), byteSize);
if(readBytes <= 0)
{
int errnum;
gzerror(&response, &errnum);
}

Thanks & Regards
NishaElsa

[divanov]

http://refspecs.freestandards.org/LS...gzerror-1.html
gzerror is accepting gzFile as first argument, why do you pass QByteArray* there?
The same thing with gzread.
http://refspecs.freestandards.org/LS...-gzread-1.html

[NishaElsa]

gzfile is a void* right? as the data to be compressed is not a file but a buffer, is there any other way that i can pas it to gzread?

[divanov]

gzfile is a void* right?

It's opaque gzip file descriptor you obtain from gzopen.

as the data to be compressed is not a file but a buffer, is there any other way that i can pas it to gzread?

Even name tells you it's a file descriptor not a buffer.
In this thread you have got a reply how to proceed (I mean the last comment)
http://discussion.forum.nokia.com/fo...d.php?t=200477