basename in C++

[PengYu.UT]

libgen.h has the basename command. But it is not a C++ head file.
Is there any C++ head file have a function or a class doing the same
thing?


Thanks,
Peng

 

[Victor Bazarov]

libgen.h has the basename command. But it is not a C++ head file.
Is there any C++ head file have a function or a class doing the same
thing?

Which thing is that?

V

 

[Rolf Magnus]

Which thing is that?

basename is part of the POSIX standard. On my system, the manual page for it
says:

DIRNAME(3) Linux Programmer’s Manual

NAME
dirname, basename - Parse pathname components

SYNOPSIS
#include <libgen.h>

char *dirname(char *path);
char *basename(char *path);

DESCRIPTION
Warning: there are two different functions basename() - see below.
The functions dirname() and basename() break a null-terminated
pathname string into directory and filename components. In the
usual case, dirname() returns the string up to, but not including,
the final ’/’, and basename() returns the component following the
final ’/’. Trailing ’/’ characters are not counted as part of the
pathname.


So the answer is: There is no standard C++ function to do that. In standard
C++, there is no such thing as directories, so there no support whatsoever
for it.

 

[Michal Nazarewicz]

libgen.h has the basename command. But it is not a C++ head file.
Is there any C++ head file have a function or a class doing the same
thing?

foo = basename(bar) works pretty much like:

#v+
foo = strrchr(bar, '/');
foo = foo ? foo + 1 : bar;
#v-

 

[Jens Theisen]

libgen.h has the basename command. But it is not a C++ head file.
Is there any C++ head file have a function or a class doing the same
thing?

If you're just looking for basename, you should probably use the posix
thing.

There is, however, a boost library for this stuff (filesystem). Note
that they call basename leaf, and their basename has something to do
with file extensions.

Regards,

Jens