Struct BerWriter 

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

A BER writer that encodes TLV elements into a byte slice.

Implementations

impl<'a> BerWriter<'a>

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

Creates a new writer over the given buffer.

pub fn len(&self) -> usize

Returns the number of bytes written so far.

pub fn is_empty(&self) -> bool

Returns true if no bytes have been written.

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

Returns the bytes written so far.

pub fn write_bool(&mut self, value: bool) -> Result<(), SleError>

Writes an ASN.1 BOOLEAN.

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

Writes an ASN.1 INTEGER (signed, variable length).

pub fn write_octet_string(&mut self, data: &[u8]) -> Result<(), SleError>

Writes an ASN.1 OCTET STRING.

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

Writes an ASN.1 ENUMERATED value.

pub fn write_null(&mut self) -> Result<(), SleError>

Writes an ASN.1 NULL.

pub fn write_bit_string(&mut self, data: &[u8]) -> Result<(), SleError>

Writes an ASN.1 BIT STRING with zero unused bits.

pub fn begin_sequence(&mut self) -> Result<SeqStart, SleError>

Begins a SEQUENCE. Returns the position of the length field so it can be patched later with end_sequence.

pub fn end_sequence(&mut self, start: SeqStart) -> Result<(), SleError>

Ends a SEQUENCE started with begin_sequence, patching the length field.

pub fn begin_context( &mut self, tag: u8, constructed: bool, ) -> Result<SeqStart, SleError>

Writes a context-tagged constructed wrapper (implicit tag). Returns a SeqStart for use with end_sequence.