System call support for unicodes

Question

Hi Solaris guru,
One of my application (C,Solaris2.7) is required to work in multiple languages. This application makes use of system & C library calls. Is it possible for a japanese user to create file names in japanese? if so how will I able to use these names (let's assume unicodes) with standard system calls and library routines which consider file names has char *?
I have noticed that Solaris provides wchar_t and (wchar.h) wide string library calls (Ex, wprintf, wscanf, wcstrcmp etc). are there any similar w-version of system calls?
I greatly appreciate your help.
Cheers
Ramesh

Answer 1

I don't know of a Solaris system call to copy files. I do know there is no such C or C++ standard library function.
It's easy enough to write a file copy routine, however.
C++ 4.2 is obsolete and no longer supported. It predates the 1998 C++ standard by a few years.
But using old-style C++, here is a copy-file routine:
#include <fstream.h>
int copyfiles(const char* i, const char* o)
ifstream in(i, ios::in|ios::binary);
ofstream out(o, ios::out|ios::binary);
out << in.rdbuf();
return !(!in && !out);
You pass it the names of the input and output files. It opens the files in binary mode, copies input to output if possible, and reports status by returning 1 for success and 0 for failure.
Using standard C++, the routine looks like this:
#include <fstream>
bool copyfiles(const char* i, const char* o)
std::ifstream in(i, std::ios::binary);
std::ofstream out(o, std::ios::binary);
out << in.rdbuf();
return !(!in && !out);