🔧 Follow the serde data format conventions

src/de.rs

@@ -1,9 +1,10 @@
 use std::io::Read;
 use serde::de::{DeserializeSeed, Visitor};
+use serde::Deserialize;
 
 /// `Read`-based deserializer for Terraria world files.
 pub struct Deserializer<'de, R: Read> {
-    pub reader: &'de mut R
+    reader: &'de mut R
 }
 
 impl<'de, R: Read> Deserializer<'de, R> {
@@ -225,3 +226,9 @@ impl<'a, 'de, R: Read> serde::de::SeqAccess<'de> for ByteSized<'a, 'de, R> {
         Some(self.size)
     }
 }
+
+pub fn from_reader<'de, R: Read, T>(reader: &'de mut R) -> crate::Result<T> where T: Deserialize<'de> {
+    let mut de = Deserializer { reader };
+    let t = T::deserialize(&mut de)?;
+    Ok(t)
+}

src/lib.rs

@@ -7,6 +7,8 @@ mod de;
 mod error;
 
 pub use ser::Serializer;
+pub use ser::to_writer;
 pub use de::Deserializer;
+pub use de::from_reader;
 pub use error::Error;
-pub use error::Result;
+pub use error::Result;

src/ser.rs

@@ -3,7 +3,7 @@ use serde::Serialize;
 
 /// `Write`-based serializer for Terraria world files.
 pub struct Serializer<W: Write> {
-    pub writer: W,
+    writer: W,
 }
 
 impl<W: Write> Serializer<W> {
@@ -338,3 +338,9 @@ impl<W: Write> serde::ser::SerializeStructVariant for &mut Serializer<W> {
         Err(crate::Error::Unsupported)
     }
 }
+
+pub fn to_writer<W: Write, T>(writer: W, value: T) -> crate::Result<W> where T: Serialize {
+    let mut ser = Serializer { writer };
+    value.serialize(&mut ser)?;
+    Ok(ser.writer)
+}