Struct SnapshotWriter 

pub struct SnapshotWriter { /* private fields */ }

Builds a snapshot file from section dumps.

use plugmem_core::snapshot::{Snapshot, SnapshotWriter};

let mut w = SnapshotWriter::new();
w.section(7, b"payload".to_vec()).unwrap();
let bytes = w.finish(b"config-bytes", 0, 1_700_000_000_000, "0.1.0");
let snap = Snapshot::parse(&bytes).unwrap();
assert_eq!(snap.config(), b"config-bytes");
assert_eq!(snap.section(7), Some(&b"payload"[..]));
assert_eq!(snap.section(8), None);

Implementations

impl SnapshotWriter

pub fn new() -> Self

An empty writer.

pub fn section(&mut self, kind: u16, bytes: Vec<u8>) -> Result<(), Error>

Adds one section. Kinds must be unique within a file.

Errors

Error::Corrupt when kind was already added (a composition bug surfaced as a typed error rather than a corrupt file).

pub fn finish( self, config: &[u8], flags: u16, created_at: u64, engine_ver: &str, ) -> Vec<u8>

Assembles the final file: header, config block, table, aligned sections, checksums. Deterministic — identical inputs produce identical bytes.

engine_ver is informational; its first 24 UTF-8 bytes are stored (callers pass an ASCII semver in practice).

Trait Implementations

impl Debug for SnapshotWriter

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

Formats the value using the given formatter.

impl Default for SnapshotWriter

fn default() -> SnapshotWriter

Returns the “default value” for a type.