Made site infos saveable on their own

src/main.rs

@@ -60,6 +60,59 @@ struct SiteInfo {
     down: usize,
 }
 
+impl<S: SizeSettings> ToStream<S> for SiteInfo {
+    fn to_stream<W: Write>(&self, stream: &mut W) -> Result<()> {
+        S::size_to_stream(self.comments.len(), stream)?;
+        for Comment { name, text } in &self.comments {
+            let name_bytes = name.as_bytes();
+            S::size_to_stream(name_bytes.len(), stream)?;
+            stream.write_all(name_bytes)?;
+
+            let text_bytes = text.as_bytes();
+            S::size_to_stream(text_bytes.len(), stream)?;
+            stream.write_all(text_bytes)?;
+        }
+
+        S::size_to_stream(self.visits, stream)?;
+        S::size_to_stream(self.up, stream)?;
+        S::size_to_stream(self.down, stream)?;
+
+        Ok(())
+    }
+}
+
+impl<S: SizeSettings> FromStream<S> for SiteInfo {
+    fn from_stream<R: Read>(stream: &mut R) -> Result<Self> {
+        let size = S::size_from_stream(stream)?;
+        let comments = (0..size)
+            .map(|_| {
+                let name_bytes = <Vec<_> as FromStream<S>>::from_stream(stream)?;
+                let name = std::str::from_utf8(&name_bytes)
+                    .map_err(|e| Error::new(ErrorKind::InvalidData, e))?
+                    .into();
+
+                let text_bytes = <Vec<_> as FromStream<S>>::from_stream(stream)?;
+                let text = std::str::from_utf8(&text_bytes)
+                    .map_err(|e| Error::new(ErrorKind::InvalidData, e))?
+                    .into();
+
+                Ok(Comment { name, text })
+            })
+            .collect::<Result<Vec<_>>>()?;
+
+        let visits = S::size_from_stream(stream)?;
+        let up = S::size_from_stream(stream)?;
+        let down = S::size_from_stream(stream)?;
+
+        Ok(SiteInfo {
+            comments,
+            visits,
+            up,
+            down,
+        })
+    }
+}
+
 #[derive(Default)]
 struct Context {
     infos: HashMap<Box<str>, SiteInfo>,
@@ -73,20 +126,7 @@ impl<S: SizeSettings> ToStream<S> for Context {
             S::size_to_stream(key_bytes.len(), stream)?;
             stream.write_all(key_bytes)?;
 
-            S::size_to_stream(info.comments.len(), stream)?;
+            to_stream::<S, _, _>(info, stream)?;
-            for Comment { name, text } in &info.comments {
-                let name_bytes = name.as_bytes();
-                S::size_to_stream(name_bytes.len(), stream)?;
-                stream.write_all(name_bytes)?;
-
-                let text_bytes = text.as_bytes();
-                S::size_to_stream(text_bytes.len(), stream)?;
-                stream.write_all(text_bytes)?;
-            }
-
-            S::size_to_stream(info.visits, stream)?;
-            S::size_to_stream(info.up, stream)?;
-            S::size_to_stream(info.down, stream)?;
         }
 
         Ok(())
@@ -103,36 +143,7 @@ impl<S: SizeSettings> FromStream<S> for Context {
                     .map_err(|e| Error::new(ErrorKind::InvalidData, e))?
                     .into();
 
-                let size = S::size_from_stream(stream)?;
+                Ok((key, from_stream::<S, SiteInfo, _>(stream)?))
-                let comments = (0..size)
-                    .map(|_| {
-                        let name_bytes = <Vec<_> as FromStream<S>>::from_stream(stream)?;
-                        let name = std::str::from_utf8(&name_bytes)
-                            .map_err(|e| Error::new(ErrorKind::InvalidData, e))?
-                            .into();
-
-                        let text_bytes = <Vec<_> as FromStream<S>>::from_stream(stream)?;
-                        let text = std::str::from_utf8(&text_bytes)
-                            .map_err(|e| Error::new(ErrorKind::InvalidData, e))?
-                            .into();
-
-                        Ok(Comment { name, text })
-                    })
-                    .collect::<Result<Vec<_>>>()?;
-
-                let visits = S::size_from_stream(stream)?;
-                let up = S::size_from_stream(stream)?;
-                let down = S::size_from_stream(stream)?;
-
-                Ok((
-                    key,
-                    SiteInfo {
-                        comments,
-                        visits,
-                        up,
-                        down,
-                    },
-                ))
             })
             .collect::<Result<HashMap<_, _>>>()?;