std::ofstream filename

[red floyd]

Is there any way to retrieve the filename given to a std::ofstream
(passed in constructor or in ofstream::open( ))?

Or, should I derive from ofstream (should probably be a template to
handle ifstream and fstream as well, but I'm typing on the fly)

yes, I know the syntax may be off...
class onamedfstream : public ofstream {
private:
std::string filename_;
public:
ofnamedstream() : ofstream() { }
ofnamedstream(c onst char * fname, ios_base::openm ode mode =
ios_base::out) :
filename_(fname ), ofstream(fname, mode) { }
~ofnamedstream( ) { }
void open(const char *fname, ios_base::openm ode = ios_base::out)
{
filename_ = fname;
ofstream::open( fname, mode);
}
const std::string& get_filename(vo id) const { return filename_; }
};

[Thomas Matthews]

red floyd wrote:

Is there any way to retrieve the filename given to a std::ofstream
(passed in constructor or in ofstream::open( ))?

Or, should I derive from ofstream (should probably be a template to
handle ifstream and fstream as well, but I'm typing on the fly)

yes, I know the syntax may be off...
class onamedfstream : public ofstream {
private:
std::string filename_;
public:
ofnamedstream() : ofstream() { }
ofnamedstream(c onst char * fname, ios_base::openm ode mode =
ios_base::out) :
filename_(fname ), ofstream(fname, mode) { }
~ofnamedstream( ) { }
void open(const char *fname, ios_base::openm ode = ios_base::out)
{
filename_ = fname;
ofstream::open( fname, mode);
}
const std::string& get_filename(vo id) const { return filename_; }
};

There are no _standard_ methods in the iostream library for
retrieving the filename after the stream has been opened.

Most programmers remember the filename by using some sort of
variable or string literal.

--
Thomas Matthews

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