From b49eadf7e55eee2b804046e88e2c864b7957047e Mon Sep 17 00:00:00 2001 From: Nikolay Kim Date: Tue, 2 Jan 2018 13:39:32 -0800 Subject: [PATCH] fix content length serialization #33 --- src/helpers.rs | 37 ++++++++++++++++++++++++++++--------- 1 file changed, 28 insertions(+), 9 deletions(-) diff --git a/src/helpers.rs b/src/helpers.rs index ba6fd49d..1b4bd0e1 100644 --- a/src/helpers.rs +++ b/src/helpers.rs @@ -309,16 +309,10 @@ pub(crate) fn write_content_length(mut n: usize, bytes: &mut BytesMut) { let d1 = (n % 100) << 1; n /= 100; unsafe {ptr::copy_nonoverlapping( - DEC_DIGITS_LUT.as_ptr().offset(d1 as isize), buf.as_mut_ptr().offset(18), 2)}; + DEC_DIGITS_LUT.as_ptr().offset(d1 as isize), buf.as_mut_ptr().offset(19), 2)}; - // decode last 1 or 2 chars - if n < 10 { - buf[20] = (n as u8) + b'0'; - } else { - let d1 = n << 1; - unsafe {ptr::copy_nonoverlapping( - DEC_DIGITS_LUT.as_ptr().offset(d1 as isize), buf.as_mut_ptr().offset(17), 2)}; - } + // decode last 1 + buf[18] = (n as u8) + b'0'; bytes.extend_from_slice(&buf); } else { @@ -394,4 +388,29 @@ mod tests { date(&mut buf2); assert_eq!(buf1, buf2); } + + #[test] + fn test_write_content_length() { + let mut bytes = BytesMut::new(); + write_content_length(0, &mut bytes); + assert_eq!(bytes.take().freeze(), b"\r\ncontent-length: 0\r\n"[..]); + write_content_length(9, &mut bytes); + assert_eq!(bytes.take().freeze(), b"\r\ncontent-length: 9\r\n"[..]); + write_content_length(10, &mut bytes); + assert_eq!(bytes.take().freeze(), b"\r\ncontent-length: 10\r\n"[..]); + write_content_length(99, &mut bytes); + assert_eq!(bytes.take().freeze(), b"\r\ncontent-length: 99\r\n"[..]); + write_content_length(100, &mut bytes); + assert_eq!(bytes.take().freeze(), b"\r\ncontent-length: 100\r\n"[..]); + write_content_length(101, &mut bytes); + assert_eq!(bytes.take().freeze(), b"\r\ncontent-length: 101\r\n"[..]); + write_content_length(998, &mut bytes); + assert_eq!(bytes.take().freeze(), b"\r\ncontent-length: 998\r\n"[..]); + write_content_length(1000, &mut bytes); + assert_eq!(bytes.take().freeze(), b"\r\ncontent-length: 1000\r\n"[..]); + write_content_length(1001, &mut bytes); + assert_eq!(bytes.take().freeze(), b"\r\ncontent-length: 1001\r\n"[..]); + write_content_length(5909, &mut bytes); + assert_eq!(bytes.take().freeze(), b"\r\ncontent-length: 5909\r\n"[..]); + } }