ostream::write() error result

[Piotr]

How to handle "lack of disk space" during the ostream::write( ) function. As
far as I know

the is ios::rdstate() function which returns 4-bit state flag:

badbit (critical error in stream buffer)
eofbit (End-Of-File reached while extracting)
failbit (failure extracting from stream)
goodbit (no error condition, represents the absence of the above bits)


but I would like to know if there was not enough free disk space to perform
the

ostream::write( ) operation.
How can I get that information ?
thank you

[Thomas Matthews]

Re: ostream::write( ) error result

Piotr wrote:
[color=blue]
> How to handle "lack of disk space" during the ostream::write( ) function. As
> far as I know
>
> the is ios::rdstate() function which returns 4-bit state flag:
>
> badbit (critical error in stream buffer)
> eofbit (End-Of-File reached while extracting)
> failbit (failure extracting from stream)
> goodbit (no error condition, represents the absence of the above bits)
>
>
> but I would like to know if there was not enough free disk space to perform
> the
>
> ostream::write( ) operation.
> How can I get that information ?
> thank you[/color]

Disks are not required by the C++ specification, so there is
no method for checking free space _using_standard _C++_.

The proper procedure is to check for an ostream error,
then use some platform specific functions for determining
the cause of the problem.

One could also use some platform specific functions for
determining the free space before writing, provide the
platform has this support.

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