Struct BufferWriter 

pub struct BufferWriter { /* private fields */ }

Buffer writer for creating binary protocol messages

This implementation uses BytesMut from the bytes crate for efficient buffer operations.

Implementations

impl BufferWriter

pub fn new() -> Self

Create a new buffer writer with initial capacity

pub fn with_capacity(capacity: usize) -> Self

Create a new buffer writer with specified capacity

pub fn position(&self) -> usize

Get current position in the buffer

pub fn bytes_written(&self) -> usize

Get bytes written so far

pub fn freeze(self) -> Bytes

Get the data as bytes

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

Get the data as a Vec<u8>

pub fn write_u8(&mut self, value: u8) -> Result<()>

Write a single byte

pub fn write_u16(&mut self, value: u16) -> Result<()>

Write a 16-bit unsigned integer in network byte order

pub fn write_i16(&mut self, value: i16) -> Result<()>

Write a 16-bit signed integer in network byte order

pub fn write_u32(&mut self, value: u32) -> Result<()>

Write a 32-bit unsigned integer in network byte order

pub fn write_u64(&mut self, value: u64) -> Result<()>

Write a 64-bit unsigned integer in network byte order

pub fn write_i32(&mut self, value: i32) -> Result<()>

Write a 32-bit signed integer in network byte order

pub fn write_i64(&mut self, value: i64) -> Result<()>

Write a 64-bit signed integer in network byte order

pub fn write_bytes(&mut self, bytes: &[u8]) -> Result<()>

Write raw bytes

pub fn write_cstring(&mut self, s: &str) -> Result<()>

Write a null-terminated string

Rejects strings containing embedded null bytes, which would produce malformed PostgreSQL protocol messages (the null byte is the terminator).

pub fn write_string(&mut self, s: &str) -> Result<()>

Write a string without null terminator

pub fn reserve(&mut self, additional: usize)

Reserve capacity for at least additional bytes

pub fn clear(&mut self)

Clear the buffer, resetting length to 0

pub fn capacity(&self) -> usize

Get remaining capacity

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

Get a reference to the internal data

Trait Implementations

impl AsRef<[u8]> for BufferWriter

fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.

impl Default for BufferWriter

fn default() -> Self

Returns the “default value” for a type.