optional secondary header

src/lib.rs

@@ -18,5 +18,7 @@
 
 //! Packet Definition for SpacePacket
 mod primaryheader;
+mod spacepacket;
 pub use primaryheader::PrimaryHeader;
+pub use spacepacket::SpacePacket;
 pub mod types;

src/spacepacket.rs

@@ -0,0 +1,36 @@
+// Implementation of the CCSDS spacepacket with an optional secondary header
+use crate::PrimaryHeader;
+use crate::types;
+use deku::prelude::*;
+use std::marker::PhantomData;
+
+#[derive(Eq, Debug, PartialEq, Clone)]
+pub struct SpacePacket<'a,S: deku::DekuContainerRead<'a> + deku::DekuWrite> {
+    pub primary_header: PrimaryHeader,
+    pub secondary_header: Option<S>,
+    pub payload: Vec<u8>,
+    phantom: PhantomData<&'a S>,
+}
+impl <'a, S: deku::DekuContainerRead<'a> + deku::DekuWrite> SpacePacket<'a,S> {
+    pub fn parse(raw: &'a Vec<u8>) -> Self {
+        let (rest,primary_header) = PrimaryHeader::from_bytes((raw,0)).expect("failed to parse primary header");
+
+        match primary_header.sec_header_flag {
+            types::SecondaryHeaderFlag::Present => {
+                let (rest,secondary_header) = S::from_bytes((rest.0,0)).expect("failed to parse secondary header");
+                Self {
+                    primary_header,
+                    secondary_header: Some(secondary_header),
+                    payload: rest.0.to_vec(),
+                    phantom: PhantomData::<&S>,
+                }
+            }
+            _ => Self {
+                primary_header,
+                secondary_header: None,
+                payload: rest.0.to_vec(),
+                phantom: PhantomData::<&S>,
+            }
+        }       
+    }
+}