feat: Make time module in lib_ccxr/util & Add helper function

src/rust/lib_ccxr/src/util/mod.rs

@@ -3,3 +3,17 @@
 pub mod bits;
 pub mod levenshtein;
 pub mod log;
+pub mod time;
+
+use std::os::raw::c_char;
+
+/// Helper function that converts a Rust-String (`string`) to C-String (`buffer`).
+///
+/// # Safety
+///
+/// `buffer` must have enough allocated space for `string` to fit.
+pub fn write_string_into_pointer(buffer: *mut c_char, string: &str) {
+    let buffer = unsafe { std::slice::from_raw_parts_mut(buffer as *mut u8, string.len() + 1) };
+    buffer[..string.len()].copy_from_slice(string.as_bytes());
+    buffer[string.len()] = b'\0';
+}