Function validate_cstr

bindings/c/src/error.rs:91–107

Validate a C string pointer: checks for null and valid UTF-8. Returns `Ok(String)` on success, or `Err(*mut paimon_error)` if the pointer is null or the string contains invalid UTF-8. # Safety If `ptr` is non-null, it must point to a valid null-terminated C string.

(ptr: *const c_char, name: &str)

/// # Safety
/// If `ptr` is non-null, it must point to a valid null-terminated C string.
pub unsafe fn validate_cstr(ptr: *const c_char, name: &str) -> Result<String, *mut paimon_error> {
    if ptr.is_null() {
        return Err(paimon_error::new(
            PaimonErrorCode::InvalidInput,
            format!("null pointer passed for `{name}`"),
        ));
    }
    CStr::from_ptr(ptr)
        .to_str()
        .map(|s| s.to_owned())
        .map_err(|e| {
            paimon_error::new(
                PaimonErrorCode::InvalidInput,
                format!("`{name}` is not valid UTF-8: {e}"),
            )
        })
}

/// Check that a pointer is non-null, returning an error if it is.
pub fn check_non_null<T>(ptr: *const T, name: &str) -> Result<(), *mut paimon_error> {