[Insight-developers] itk::OStringStream

[Brad King]

Hello, all:

Recently I added a nightly build using gcc 3.1, but it generates over
30000 warnings.  Many of them are due to the use of the <strstream>
header.  The old std::ostrstream class has been deprecated, and should not
be used in new code.  However, the new std::ostringstream class isn't
available everywhere.

To get around this problem, I've added a class called "OStringStream" to
the itk namespace.  It is std::ostringstream when available.  Otherwise,
it is a wrapper around std::ostrstream that makes it behave like the new
std::ostringstream.  The new version is much easier to use than the old
ostrstream.  We no longer need to worry about memory leaks
(rdbuf()->freeze(0)) or about ending the string with std::ends before
using it.

A typical use of OStringStream looks like this:

OStringStream message;
message << "Position: " << position; // don't need std::ends
std::string msg = message.str();  // str() returns std::string

I have changed all of ITK in CVS to use the new OStringStream class.
Please use this class in all future code in ITK.

Thanks,
-Brad