dis-rs 0.13.0

An implementation of the Distributed Interactive Simulation protocol (IEEE-1278.1) in Rust. This main crate contains PDU implementations and facilities to read/write PDUs from Rust data structures to the wire format and vice versa. It supports versions 6 and 7 of the protocol.
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use crate::common::attribute::model::{
    Attribute, AttributeRecord, AttributeRecordSet, BASE_ATTRIBUTE_RECORD_LENGTH_OCTETS,
};
use crate::common::model::length_padded_to_num;
use crate::common::{Serialize, SerializePdu, SupportedVersion};
use crate::constants::EIGHT_OCTETS;
use bytes::{BufMut, BytesMut};

impl SerializePdu for Attribute {
    fn serialize_pdu(&self, _version: SupportedVersion, buf: &mut BytesMut) -> u16 {
        let sim_address_bytes = self.originating_simulation_address.serialize(buf);
        buf.put_u32(0u32);
        buf.put_u16(0u16);
        buf.put_u8(self.record_pdu_type.into());
        buf.put_u8(self.record_protocol_version.into());
        buf.put_u32(self.master_attribute_record_type.into());
        buf.put_u8(self.action_code.into());
        buf.put_u8(0u8);
        buf.put_u16(self.attribute_record_sets.len() as u16);
        let record_sets_bytes = self
            .attribute_record_sets
            .iter()
            .map(|record_set| record_set.serialize(buf))
            .sum::<u16>();

        sim_address_bytes + 16 + record_sets_bytes
    }
}

impl Serialize for AttributeRecordSet {
    fn serialize(&self, buf: &mut BytesMut) -> u16 {
        let entity_id_bytes = self.entity_id.serialize(buf);
        buf.put_u16(self.attribute_records.len() as u16);
        let records_bytes = self
            .attribute_records
            .iter()
            .map(|record| record.serialize(buf))
            .sum::<u16>();

        entity_id_bytes + 2 + records_bytes
    }
}

impl Serialize for AttributeRecord {
    fn serialize(&self, buf: &mut BytesMut) -> u16 {
        let padded_record_lengths = length_padded_to_num(
            BASE_ATTRIBUTE_RECORD_LENGTH_OCTETS as usize + self.specific_fields.len(),
            EIGHT_OCTETS,
        );
        let record_length_bytes = padded_record_lengths.record_length as u16;

        buf.put_u32(self.record_type.into());
        buf.put_u16(record_length_bytes);
        buf.put(&*self.specific_fields);
        buf.put_bytes(0u8, padded_record_lengths.padding_length);

        record_length_bytes
    }
}