Thread: bug fix: read write header

All,

In checking the read write header bug, Arthur Snoke found a abnormality
in the Mac OSX build. The Mac OSX bug would not write the file on a
writehdr call. In detail, an lseek call was not defined (the header
file was missing) and the return value was also not checked properly. I
created a new patch to fix this along with the read write header bug.
It is attached below. Testing is, as always, appreciated.

Cheers,
Brian

All,

I have created a patch for the read header / write header bug discovered
a while back. It effectively handles big and small endian files.

This patch determines the file's endianness and writes the appropriate
header. During a write header, this is the logic:

- Open file to be written (file must already exist)
- Read in Old Header
- Examine Version Number
- If version number between 1 and current version (6)
- Write header
- If version number not between 1 and current version (6)
- Swap version number
- If version number not between 1 and current verison (6)
Issue Error
- If version number between 1 and current version (6)
Write swapped header
- Close File

Based on the current CVS version, please test and get back to me.

Cheers,
Brian
savage13<at>dtm.ciw.edu