Struct Tlv8Writer 

pub struct Tlv8Writer<'a> { /* private fields */ }

A TLV8 encoder that appends to a borrowed Vec<u8>.

The writer borrows the output buffer mutably for its lifetime; drop the writer to release the borrow.

Implementations

impl<'a> Tlv8Writer<'a>

pub fn new(out: &'a mut Vec<u8>) -> Self

Construct a writer that appends to out.

pub fn push(&mut self, ty: u8, value: &[u8])

Write a logical value as one or more TLV8 items, fragmenting any value longer than 255 bytes into consecutive items of the same type.

A 255-byte item means “more of this type follows”, so when the value’s length is a non-zero exact multiple of 255 a terminating zero-length item of the same type is appended to mark the end of the run. The matching reader (crate::Tlv8Reader::parse) reverses this.

pub fn push_u8(&mut self, ty: u8, v: u8)

Write an unsigned 8-bit integer as a 1-byte item.

pub fn push_u16(&mut self, ty: u8, v: u16)

Write an unsigned 16-bit integer as a 2-byte little-endian item.

pub fn push_u32(&mut self, ty: u8, v: u32)

Write an unsigned 32-bit integer as a 4-byte little-endian item.

pub fn push_u64(&mut self, ty: u8, v: u64)

Write an unsigned 64-bit integer as an 8-byte little-endian item.

pub fn push_str(&mut self, ty: u8, v: &str)

Write a string as its UTF-8 bytes. Long strings fragment via push.

pub fn push_separator(&mut self)

Write a zero-length separator item (crate::SEPARATOR, 0xFF) used to delimit repeated structures such as a list of pairings.