btleplug 0.10.0

// btleplug Source Code File
//
// Copyright 2020 Nonpolynomial Labs LLC. All rights reserved.
//
// Licensed under the BSD 3-Clause license. See LICENSE file in the project root
// for full license information.
//
// Some portions of this file are taken and/or modified from blurmac
// (https://github.com/servo/devices), using a BSD 3-Clause license under the
// following copyright:
//
// Copyright (c) 2017 Akos Kiss.
//
// Licensed under the BSD 3-Clause License
// <LICENSE.md or https://opensource.org/licenses/BSD-3-Clause>.
// This file may not be copied, modified, or distributed except
// according to those terms.

use cocoa::{
    base::{id, nil},
    foundation::NSString,
};
use std::ffi::CStr;

/// Convert the given `NSString` to a Rust `String`, or `None` if it is `nil`.
pub fn nsstring_to_string(nsstring: id) -> Option<String> {
    if nsstring == nil {
        return None;
    }
    unsafe {
        Some(String::from(
            CStr::from_ptr(nsstring.UTF8String()).to_str().unwrap(),
        ))
    }
}

pub fn str_to_nsstring(string: &str) -> id {
    unsafe { NSString::alloc(nil).init_str(string) }
}