Struct BlockIndex 

pub struct BlockIndex {
    pub entries: Vec<BlockIndexEntry>,
    pub checksums_enabled: bool,
}

In-memory representation of the trailing block index.

Fields

entries: Vec<BlockIndexEntry>

checksums_enabled: bool

Implementations

impl BlockIndex

pub fn uncompressed_offset(&self, block_n: u64) -> u64

Returns the absolute byte offset within the original uncompressed stream at which block n begins. O(N) — sums preceding uncompressed sizes.

pub fn block_for_offset(&self, uncompressed_offset: u64) -> Option<u64>

Returns the block index containing the given uncompressed byte offset, or None if the offset is beyond the end of the stream.

O(N) linear scan over cumulative uncompressed sizes.

pub fn total_uncompressed_size(&self) -> u64

Total uncompressed size across all blocks.

pub fn len(&self) -> u64

Number of blocks in the index.

pub fn is_empty(&self) -> bool

Returns true if the index contains no blocks.

Trait Implementations

impl Clone for BlockIndex

fn clone(&self) -> BlockIndex

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BlockIndex

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

Formats the value using the given formatter.