_wfopen equivalent under Mac OS X

Question

I\'m looking to the equivalent of Windows _wfopen() under Mac OS X. Any idea?

I need this in order to port a Windows library that uses wchar* for its File i

Answer 1

@JKP:

Not all functions in MacOS X accept UTF8, but filenames and filepaths may be UTF8, thus all POSIX functions dealing with file access (open, fopen, stat, etc.) accept UTF8.

See here. Quote:

How a file name looks at the API level depends on the API. Current Carbon APIs handle file names as an array of UTF-16 characters; POSIX ones handle them as an array of UTF-8, which is why UTF-8 works well in Terminal. How it's stored on disk depends on the disk format; HFS+ uses UTF-16, but that's not important in most cases.

Some other POSIX functions handle UTF8 as well. E.g. functions dealing with user names, group names or user passwords use UTF8 to store the information (thus a user name can be Japanese and your password can be Chinese, no problem).

But not all handle UTF8. E.g. for all string functions an UTF8 string is just a normal C String and characters above 126 have no special meaning. They don't understand the concept of multiple bytes (chars in C) forming a single Unicode character. How other APIs handle char * pointer being passed to them is different from API to API. However, as a rule as the thumb you can say:

Either the function only accepts C strings with pure ASCII characters (only in the range 0 to 126) or it will accept UTF8. Usually functions don't allow characters above 126 and interpret them in any other encoding than UTF8. If this really was the case, it is documented and then there must be a way to pass the encoding along with the string.