Function parse_multi_string

resources/windows_service/src/service.rs:39–61

Parse a double-null-terminated multi-string into individual strings. # Safety The pointer must point to a valid double-null-terminated buffer, or be null.

(ptr: PWSTR)

///
/// The pointer must point to a valid double-null-terminated buffer, or be null.
unsafe fn parse_multi_string(ptr: PWSTR) -> Vec<String> {
    if ptr.is_null() {
        return Vec::new();
    }
    let mut result = Vec::new();
    let mut current = ptr.0;
    unsafe {
        loop {
            if *current == 0 {
                break;
            }
            let pcwstr = PCWSTR(current);
            match pcwstr.to_string() {
                Ok(s) => {
                    current = current.add(s.encode_utf16().count() + 1);
                    result.push(s);
                }
                Err(_) => break,
            }
        }
    }
    result
}

/// RAII wrapper for `SC_HANDLE` that calls `CloseServiceHandle` on drop.
struct ScHandle(SC_HANDLE);