feat:

+ Added `free_c_str` for check is valid path
+ Addded test case for this function

Author: Reim-developer

ffi_rs/src/utils/path.rs

@@ -0,0 +1,42 @@
+use std::{ffi::{CStr}, os::raw::c_char, path::Path};
+
+#[unsafe(no_mangle)]
+pub unsafe extern "C" fn is_valid_path(path: *mut c_char) -> bool { unsafe {
+    if path.is_null() {
+        return false;
+    }
+
+    let c_str = match CStr::from_ptr(path).to_str() {
+        Ok(string) => string,
+        Err(_) => return false,
+    };
+
+    if c_str.is_empty() {
+        return false;
+    }
+
+    let path = Path::new(c_str);
+
+    path
+        .as_os_str()
+        .as_encoded_bytes()
+        .iter()
+        .all(|&char| char != 0)
+}}
+
+#[test]
+fn test_is_valid_path() {
+    use std::ffi::{CString};
+    use std::ptr::null_mut;
+    use crate::alloc::memory::free_c_str;
+
+    unsafe {
+        let c_string = CString
+            ::new("../../src/utils/path.rs") /* Path to some exits file ...*/
+            .map(|raw| raw.into_raw())
+            .unwrap_or(null_mut());
+
+        assert_eq!(true, is_valid_path(c_string));
+        free_c_str(c_string);
+    }
+}