Function strftime_ascii

crates/vm/src/stdlib/time.rs:656–676

(fmt: &str, tm: &libc::tm, vm: &VirtualMachine)

        #[cfg(unix)]
        fn strftime_ascii(fmt: &str, tm: &libc::tm, vm: &VirtualMachine) -> PyResult<String> {
            let fmt_c =
                CString::new(fmt).map_err(|_| vm.new_value_error("embedded null character"))?;
            let mut size = 1024usize;
            let max_scale = 256usize.saturating_mul(fmt.len().max(1));
            loop {
                let mut out = vec![0u8; size];
                let written = unsafe {
                    libc::strftime(
                        out.as_mut_ptr().cast(),
                        out.len(),
                        fmt_c.as_ptr(),
                        tm as *const libc::tm,
                    )
                };
                if written > 0 || size >= max_scale {
                    return Ok(String::from_utf8_lossy(&out[..written]).into_owned());
                }
                size = size.saturating_mul(2);
            }
        }

        #[cfg(windows)]
        fn strftime_ascii(fmt: &str, tm: &libc::tm, vm: &VirtualMachine) -> PyResult<String> {