Opens a file for reading or writing, without attempting to create a new file.
To create a new file, see createFile.
Allocates a resource to be released with File.close.
On Windows, sub_path should be encoded as WTF-8.
On WASI, sub_path should be encoded as valid UTF-8.
On other platforms, sub_path is an opaque sequence of bytes with no particular encoding.
pub fn openFile(dir: Dir, io: Io, sub_path: []const u8, options: OpenFileOptions) File.OpenError!File
pub fn openFile(dir: Dir, io: Io, sub_path: []const u8, options: OpenFileOptions) File.OpenError!File {
return io.vtable.dirOpenFile(io.userdata, dir, sub_path, options);
}