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use {
bcder::{
decode::{Constructed, Source},
encode::{self, PrimitiveContent, Values},
Captured, Mode, Oid,
},
std::{
fmt::{Debug, Formatter},
io::Write,
ops::{Deref, DerefMut},
},
};
#[derive(Clone, Eq, PartialEq)]
pub struct Attribute {
pub typ: Oid,
pub values: Vec<AttributeValue>,
}
impl Debug for Attribute {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
let mut s = f.debug_struct("Attribute");
s.field("type", &format_args!("{}", self.typ));
s.field("values", &self.values);
s.finish()
}
}
impl Attribute {
pub fn take_opt_from<S: Source>(cons: &mut Constructed<S>) -> Result<Option<Self>, S::Err> {
cons.take_opt_sequence(|cons| {
let typ = Oid::take_from(cons)?;
let values = cons.take_set(|cons| {
let mut values = Vec::new();
while let Some(value) = AttributeValue::take_opt_from(cons)? {
values.push(value);
}
Ok(values)
})?;
Ok(Self { typ, values })
})
}
pub fn encode_ref(&self) -> impl Values + '_ {
encode::sequence((self.typ.encode_ref(), encode::set(&self.values)))
}
pub fn encode(self) -> impl Values {
encode::sequence((self.typ.encode(), encode::set(self.values)))
}
}
#[derive(Clone)]
pub struct AttributeValue(Captured);
impl Debug for AttributeValue {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
f.write_fmt(format_args!(
"{}",
hex::encode(self.0.clone().into_bytes().as_ref())
))
}
}
impl AttributeValue {
pub fn new(captured: Captured) -> Self {
Self(captured)
}
pub fn take_opt_from<S: Source>(cons: &mut Constructed<S>) -> Result<Option<Self>, S::Err> {
let captured = cons.capture_all()?;
if captured.is_empty() {
Ok(None)
} else {
Ok(Some(Self(captured)))
}
}
}
impl Values for AttributeValue {
fn encoded_len(&self, mode: Mode) -> usize {
self.0.encoded_len(mode)
}
fn write_encoded<W: Write>(&self, mode: Mode, target: &mut W) -> Result<(), std::io::Error> {
self.0.write_encoded(mode, target)
}
}
impl Deref for AttributeValue {
type Target = Captured;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl DerefMut for AttributeValue {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}
impl PartialEq for AttributeValue {
fn eq(&self, other: &Self) -> bool {
self.0.as_slice() == other.0.as_slice()
}
}
impl Eq for AttributeValue {}