Struct RDWRecord 

pub struct RDWRecord {
    pub header: [u8; 4],
    pub payload: Vec<u8>,
}

An RDW record with header and payload bytes.

Fields

header: [u8; 4]

4-byte RDW header (length + reserved).

payload: Vec<u8>

Record payload bytes.

Implementations

impl RDWRecord

pub fn try_new(payload: Vec<u8>) -> Result<RDWRecord, Error>

Create a new RDW record from payload (fallible constructor).

Constructs an RDWRecord with a computed header (payload length + zero reserved bytes).

Examples

use copybook_rdw::RDWRecord;

let record = RDWRecord::try_new(vec![0xC8; 80]).unwrap();
assert_eq!(record.length(), 80);
assert_eq!(record.payload.len(), 80);

Errors

Returns an error when payload length exceeds u16::MAX.

pub fn try_with_reserved( payload: Vec<u8>, reserved: u16, ) -> Result<RDWRecord, Error>

Create an RDW record preserving reserved bytes (fallible constructor).

Errors

Returns an error when payload length exceeds u16::MAX.

pub fn length(&self) -> u16

Get payload length from header.

pub fn reserved(&self) -> u16

Get reserved bytes from header.

pub fn try_recompute_length(&mut self) -> Result<(), Error>

Recompute the header length field from payload length.

Errors

Returns an error when payload length exceeds u16::MAX.

pub fn as_bytes(&self) -> Vec<u8>

Serialize record as header + payload.

Trait Implementations

impl Clone for RDWRecord

fn clone(&self) -> RDWRecord

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RDWRecord

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.