Struct ObjectHeader 

pub struct ObjectHeader {
    pub version: u8,
    pub track_creation_order: bool,
    pub messages: Vec<HeaderMessage>,
}

Parsed object header containing its version and all raw messages.

Fields

version: u8

Object header version (1 or 2).

track_creation_order: bool

Whether creation order is tracked for messages (v2 only, flags bit 2).

messages: Vec<HeaderMessage>

All header messages, in order.

Implementations

impl ObjectHeader

pub fn parse( data: &Bytes, size_of_offsets: u8, size_of_lengths: u8, ) -> Result<Self>

Parse an object header from a byte buffer at the given position.

For v2 headers, the data must start with the OHDR signature. For v1 headers, there is no signature — the version byte comes first.

continuation_fetcher is called when a continuation message is found and we need to fetch more data from a different file offset. For the initial parse (from a single prefetched buffer), pass None.

pub fn find_message(&self, msg_type: u16) -> Option<&HeaderMessage>

Find the first message of a given type.

pub fn find_messages(&self, msg_type: u16) -> Vec<&HeaderMessage>

Find all messages of a given type.

pub fn has_continuation(&self) -> bool

Check if a continuation message is present (meaning we’d need to fetch more data from a different file address).

pub fn continuation_addresses( &self, size_of_offsets: u8, size_of_lengths: u8, ) -> Result<Vec<(u64, u64)>>

Extract continuation addresses from continuation messages.

Trait Implementations

impl Clone for ObjectHeader

fn clone(&self) -> ObjectHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ObjectHeader

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

Formats the value using the given formatter.