Struct BTreeV2Header 

pub struct BTreeV2Header {
    pub btree_type: u8,
    pub node_size: u32,
    pub record_size: u16,
    pub depth: u16,
    pub split_percent: u8,
    pub merge_percent: u8,
    pub root_node_address: u64,
    pub num_records_in_root: u16,
    pub total_records: u64,
}

Parsed B-tree v2 header.

Fields

btree_type: u8

B-tree type (determines the record format).

node_size: u32

Size in bytes of each B-tree node (both internal and leaf).

record_size: u16

Size in bytes of each record.

depth: u16

Depth of the tree (0 = root is a leaf).

split_percent: u8

Percent full at which to split a node.

merge_percent: u8

Percent full at which to merge a node.

root_node_address: u64

Address of the root node.

num_records_in_root: u16

Number of records in the root node.

total_records: u64

Total number of records in the entire tree.

Implementations

impl BTreeV2Header

pub fn parse( cursor: &mut Cursor<'_>, offset_size: u8, length_size: u8, ) -> Result<Self>

Parse a B-tree v2 header at the current cursor position.

Format:

• Signature: BTHD (4 bytes)
• Version: 0 (1 byte)
• B-tree type (u8)
• Node size (u32 LE)
• Record size (u16 LE)
• Depth (u16 LE)
• Split percent (u8)
• Merge percent (u8)
• Root node address (offset_size bytes)
• Number of records in root node (u16 LE)
• Total number of records in tree (length_size bytes)
• Checksum (u32 LE)

Trait Implementations

impl Clone for BTreeV2Header

fn clone(&self) -> BTreeV2Header

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BTreeV2Header

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

Formats the value using the given formatter.