Fix formatting and minor restructuring

Fixed formatting using cargo fmt.
Change some parser structure to reduce code deduplication

src/frame.rs

@@ -39,7 +39,10 @@ impl<'b> Frame<'b> {
         Some(self.inner.as_ref())
     }
 
-    pub fn decompress_with_buf<'s, 'buf>(&'s self, buf: &'b mut Vec<u8>) -> Result<&'buf [u8], ()> where 's: 'buf {
+    pub fn decompress_with_buf<'s, 'buf>(&'s self, buf: &'b mut Vec<u8>) -> Result<&'buf [u8], ()>
+    where
+        's: 'buf,
+    {
         if !self.compressed {
             return Ok(&self.inner);
         }
@@ -50,10 +53,12 @@ impl<'b> Frame<'b> {
         })?;
         buf.resize(uncompressed_len, 0);
 
-        snap::raw::Decoder::new().decompress(&self.inner, buf.as_mut_slice()).map_err(|e| {
-            println!("Decompressing");
-            ()
-        })?;
+        snap::raw::Decoder::new()
+            .decompress(&self.inner, buf.as_mut_slice())
+            .map_err(|e| {
+                println!("Decompressing");
+                ()
+            })?;
 
         Ok(buf.as_slice())
     }