llvm::sys::path::root_directory

Synopsis

Declared in <llvm/Support/Path.h>

StringRef
root_directory(
    StringRef path,
    Style style = Style::native);


/goo/hello => /
c:/hello   => /
d/file.txt => <empty>

The root directory of path if it has one, otherwise "".

Name	Description
path	Input path.
style	The style of `path` (e.g. Windows or POSIX). "native" style means to derive the style from the host.