Implement channelmonitor (de)serialization (fixes #45)

[rust-lightning] / src / util / byte_utils.rs

diff --git a/src/util/byte_utils.rs b/src/util/byte_utils.rs
index 74a01196f943433ec71dc6d8f22bd8cea6d7fd1d..b9ca3f6b650a19c2e14380493f4e7bf0f1e9da90 100644 (file)
--- a/src/util/byte_utils.rs
+++ b/src/util/byte_utils.rs
@@ -11,6 +11,15 @@ pub fn slice_to_be32(v: &[u8]) -> u32 {
        ((v[3] as u32) << 8*0)
 }
 #[inline]
+pub fn slice_to_be48(v: &[u8]) -> u64 {
+       ((v[0] as u64) << 8*5) |
+       ((v[1] as u64) << 8*4) |
+       ((v[2] as u64) << 8*3) |
+       ((v[3] as u64) << 8*2) |
+       ((v[4] as u64) << 8*1) |
+       ((v[5] as u64) << 8*0)
+}
+#[inline]
 pub fn slice_to_be64(v: &[u8]) -> u64 {
        ((v[0] as u64) << 8*7) |
        ((v[1] as u64) << 8*6) |
@@ -39,6 +48,18 @@ pub fn be32_to_array(u: u32) -> [u8; 4] {
        v
 }
 #[inline]
+pub fn be48_to_array(u: u64) -> [u8; 6] {
+       assert!(u & 0xffff_0000_0000_0000 == 0);
+       let mut v = [0; 6];
+       v[0] = ((u >> 8*5) & 0xff) as u8;
+       v[1] = ((u >> 8*4) & 0xff) as u8;
+       v[2] = ((u >> 8*3) & 0xff) as u8;
+       v[3] = ((u >> 8*2) & 0xff) as u8;
+       v[4] = ((u >> 8*1) & 0xff) as u8;
+       v[5] = ((u >> 8*0) & 0xff) as u8;
+       v
+}
+#[inline]
 pub fn be64_to_array(u: u64) -> [u8; 8] {
        let mut v = [0; 8];
        v[0] = ((u >> 8*7) & 0xff) as u8;