Using C++ to access Documents folder on iOS - c++

Question

I'm wondering if there is a way to get a reference to the Documents folder on iOS using just C++ (i.e. WITHOUT using ANY code in Objective-C; this because it is a framework implemented only in C++ that can be add as a library in a iOS project).
Please, if it is possible, provide code in your answer.

Answer 1

With code below I able to access cache folder in my app. I think, documents folder in "/Library/Documents", or somewere else.
char *home = getenv("HOME");
char *subdir = "/Library/Caches/subdir";
home + subdir = full path
Next, with full path, you can do usual things to read/write in C++

Answer 2

Yes, you have access to the plain Unix APIs. See Apples iOS manpages here.

Answer 3

Get the path (using Cocoa APIs), then convert it to a C++ string compatible representation using and API such as: CFStringGetFileSystemRepresentation, CFURLGetFileSystemRepresentation, or -[NSString fileSystemRepresentation].
Something like:
// you may need to wrap this in an autorelease pool
NSArray * paths(NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES));
const char* const path([[paths objectAtIndex:0] fileSystemRepresentation]);
if (0 == fsrep) {
uh-oh
}
const std::string result(path);
Then you can simply put that in its own ObjC++ translation and return result from the function (which would be visible to the rest of your C++ sources).