apple-metal 0.8.4

Safe Rust bindings for Apple's Metal framework — devices, resources, command encoding, advanced GPU objects, and IOSurface interop on macOS, backed by a Swift bridge
Documentation 
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use std::ffi::{CStr, CString};

/// Calls the `Metal` framework counterpart for `c_string`.
pub fn c_string(value: &str) -> Result<CString, String> {
    CString::new(value).map_err(|error| error.to_string())
}

/// Calls the `Metal` framework counterpart for `take_optional_string`.
pub unsafe fn take_optional_string(ptr: *mut core::ffi::c_char) -> Option<String> {
    if ptr.is_null() {
        return None;
    }

    let value = CStr::from_ptr(ptr).to_string_lossy().into_owned();
    libc::free(ptr.cast());
    Some(value)
}

/// Calls the `Metal` framework counterpart for `take_string`.
pub unsafe fn take_string(ptr: *mut core::ffi::c_char) -> String {
    take_optional_string(ptr).unwrap_or_default()
}