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use crate::{Any, ByteSlice, Encodable, Encoder, Error, ErrorKind, Length, Result, Tag, Tagged};
use core::convert::TryFrom;
#[derive(Copy, Clone, Debug, Eq, PartialEq, PartialOrd, Ord)]
pub struct OctetString<'a> {
inner: ByteSlice<'a>,
}
impl<'a> OctetString<'a> {
pub fn new(slice: &'a [u8]) -> Result<Self> {
ByteSlice::new(slice)
.map(|inner| Self { inner })
.map_err(|_| ErrorKind::Length { tag: Self::TAG }.into())
}
pub fn as_bytes(&self) -> &'a [u8] {
self.inner.as_bytes()
}
pub fn len(&self) -> Length {
self.inner.len()
}
pub fn is_empty(&self) -> bool {
self.inner.is_empty()
}
}
impl AsRef<[u8]> for OctetString<'_> {
fn as_ref(&self) -> &[u8] {
self.as_bytes()
}
}
impl<'a> From<&OctetString<'a>> for OctetString<'a> {
fn from(value: &OctetString<'a>) -> OctetString<'a> {
*value
}
}
impl<'a> TryFrom<Any<'a>> for OctetString<'a> {
type Error = Error;
fn try_from(any: Any<'a>) -> Result<OctetString<'a>> {
any.tag().assert_eq(Tag::OctetString)?;
Self::new(any.as_bytes())
}
}
impl<'a> From<OctetString<'a>> for Any<'a> {
fn from(octet_string: OctetString<'a>) -> Any<'a> {
Any {
tag: Tag::OctetString,
value: octet_string.inner,
}
}
}
impl<'a> From<OctetString<'a>> for &'a [u8] {
fn from(octet_string: OctetString<'a>) -> &'a [u8] {
octet_string.as_bytes()
}
}
impl<'a> Encodable for OctetString<'a> {
fn encoded_len(&self) -> Result<Length> {
Any::from(*self).encoded_len()
}
fn encode(&self, encoder: &mut Encoder<'_>) -> Result<()> {
Any::from(*self).encode(encoder)
}
}
impl<'a> Tagged for OctetString<'a> {
const TAG: Tag = Tag::OctetString;
}