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Introduce Data type to use with serde
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use std::fmt; | ||
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/// A byte buffer used for serialization to and from the plist data type. | ||
/// | ||
/// You use it in types with derived `Serialize`/`Deserialize` traits. | ||
/// | ||
/// ## Examples | ||
/// | ||
/// ```rust | ||
/// extern crate plist; | ||
/// #[macro_use] | ||
/// extern crate serde_derive; | ||
/// | ||
/// # fn main() { | ||
/// #[derive(Deserialize, Serialize)] | ||
/// struct Info { | ||
/// blob: plist::Data, | ||
/// } | ||
/// | ||
/// let actual = Info { blob: plist::Data::new(vec![1, 2, 3, 4]) }; | ||
/// | ||
/// let mut xml_byte_buffer: Vec<u8> = vec![]; | ||
/// plist::to_writer_xml(&mut xml_byte_buffer, &actual) | ||
/// .expect("serialize into xml"); | ||
/// | ||
/// let expected: Info = plist::from_reader_xml(xml_byte_buffer.as_slice()) | ||
/// .expect("deserialize from xml"); | ||
/// | ||
/// assert_eq!(actual.blob, expected.blob); | ||
/// # } | ||
/// ``` | ||
#[derive(Clone, PartialEq, Eq)] | ||
pub struct Data { | ||
inner: Vec<u8>, | ||
} | ||
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impl Data { | ||
/// Creates a new `Data` from vec of bytes. | ||
pub fn new(bytes: Vec<u8>) -> Self { | ||
Data { inner: bytes } | ||
} | ||
} | ||
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impl From<Vec<u8>> for Data { | ||
fn from(from: Vec<u8>) -> Self { | ||
Data { inner: from } | ||
} | ||
} | ||
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impl From<Data> for Vec<u8> { | ||
fn from(from: Data) -> Self { | ||
from.inner | ||
} | ||
} | ||
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impl AsRef<[u8]> for Data { | ||
fn as_ref(&self) -> &[u8] { | ||
self.inner.as_ref() | ||
} | ||
} | ||
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impl AsMut<[u8]> for Data { | ||
fn as_mut(&mut self) -> &mut [u8] { | ||
self.inner.as_mut() | ||
} | ||
} | ||
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impl fmt::Debug for Data { | ||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { | ||
self.inner.fmt(f) | ||
} | ||
} | ||
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pub mod serde_impls { | ||
use serde::{de, ser}; | ||
use std::fmt; | ||
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use crate::Data; | ||
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impl ser::Serialize for Data { | ||
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> | ||
where | ||
S: ser::Serializer, | ||
{ | ||
serializer.serialize_bytes(self.as_ref()) | ||
} | ||
} | ||
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struct DataVisitor; | ||
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impl<'de> de::Visitor<'de> for DataVisitor { | ||
type Value = Data; | ||
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fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { | ||
formatter.write_str("a byte array") | ||
} | ||
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fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E> | ||
where | ||
E: de::Error, | ||
{ | ||
self.visit_byte_buf(v.to_owned()) | ||
} | ||
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fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E> | ||
where | ||
E: de::Error, | ||
{ | ||
Ok(v.into()) | ||
} | ||
} | ||
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impl<'de> de::Deserialize<'de> for Data { | ||
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> | ||
where | ||
D: de::Deserializer<'de>, | ||
{ | ||
deserializer.deserialize_byte_buf(DataVisitor) | ||
} | ||
} | ||
} |
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