Struct BsvWriter 

pub struct BsvWriter { /* private fields */ }

A buffer-based writer for Bitcoin protocol binary data.

Wraps a Vec<u8> and provides methods to append fixed-size integers and VarInt values in little-endian order.

Implementations

impl BsvWriter

pub fn new() -> Self

Create a new empty writer.

Returns

A BsvWriter with an empty internal buffer.

pub fn with_capacity(capacity: usize) -> Self

Create a new writer with a pre-allocated capacity.

Arguments

• capacity - Initial byte capacity of the internal buffer.

Returns

A BsvWriter with the given capacity.

pub fn write_bytes(&mut self, bytes: &[u8])

Append raw bytes to the buffer.

Arguments

• bytes - The bytes to append.

pub fn write_u8(&mut self, val: u8)

Append a single byte to the buffer.

Arguments

• val - The byte value.

pub fn write_u16_le(&mut self, val: u16)

Append a little-endian u16 (2 bytes) to the buffer.

Arguments

• val - The u16 value.

pub fn write_u32_le(&mut self, val: u32)

Append a little-endian u32 (4 bytes) to the buffer.

Arguments

• val - The u32 value.

pub fn write_u64_le(&mut self, val: u64)

Append a little-endian u64 (8 bytes) to the buffer.

Arguments

• val - The u64 value.

pub fn write_varint(&mut self, varint: VarInt)

Append a VarInt to the buffer.

Arguments

• varint - The VarInt value to encode and append.

pub fn into_bytes(self) -> Vec<u8>

Consume the writer and return the accumulated bytes.

Returns

The internal byte buffer.

pub fn as_bytes(&self) -> &[u8]

Return a reference to the current buffer contents.

Returns

A byte slice of the written data.

pub fn len(&self) -> usize

Return the current length of the buffer.

Returns

The number of bytes written so far.

pub fn is_empty(&self) -> bool

Check if the buffer is empty.

Returns

true if no bytes have been written.

Trait Implementations

impl Default for BsvWriter

fn default() -> Self

Returns the “default value” for a type.