Struct ByteReader 

pub struct ByteReader<'a> { /* private fields */ }

Byte-aligned, forward-scanning cursor over a &[u8] buffer.

ByteReader is used to walk the outer demo command stream — the sequence of (cmd, tick, size, body) tuples that make up a .dem file after the 16-byte file header. All multi-byte integers are little-endian, and variable-length integers use protobuf-style LEB128 encoding.

For bit-level access inside decompressed packet payloads, see BitReader.

Implementations

impl<'a> ByteReader<'a>

pub fn new(data: &'a [u8]) -> Self

Create a new reader starting at the beginning of data.

pub fn position(&self) -> usize

Current byte offset from the start of the buffer.

pub fn remaining(&self) -> usize

Number of bytes between the cursor and the end of the buffer.

pub fn is_empty(&self) -> bool

Returns true when the cursor is at or past the end of the buffer.

pub fn seek(&mut self, position: usize) -> Result<()>

Move the cursor to an absolute byte position.

Returns Error::Overflow if position exceeds the buffer length.

pub fn read_u8(&mut self) -> Result<u8>

Read a single byte and advance the cursor.

pub fn read_u16(&mut self) -> Result<u16>

Read a little-endian u16 and advance the cursor by 2 bytes.

pub fn read_u32(&mut self) -> Result<u32>

Read a little-endian u32 and advance the cursor by 4 bytes.

pub fn read_i32(&mut self) -> Result<i32>

Read a little-endian i32 and advance the cursor by 4 bytes.

pub fn read_bytes(&mut self, n: usize) -> Result<&'a [u8]>

Borrow n bytes starting at the cursor and advance past them.

pub fn read_uvarint32(&mut self) -> Result<u32>

Read a protobuf-style unsigned varint (up to 32 bits / 5 bytes).

pub fn read_uvarint64(&mut self) -> Result<u64>

Read a protobuf-style unsigned varint (up to 64 bits / 10 bytes).

pub fn skip(&mut self, n: usize) -> Result<()>

Advance the cursor by n bytes without reading.

pub fn data(&self) -> &'a [u8]

Returns the full underlying data slice (independent of cursor position).