Add a delegating read_exact() on Reader so we can use the same Reader for more things

src/lib.rs

@@ -105,9 +105,9 @@ impl File {
                 continue;
             }
 
-            io_file.seek(io::SeekFrom::Start(section.shdr.sh_offset))?;
+            reader.seek(io::SeekFrom::Start(section.shdr.sh_offset))?;
             section.data.resize(section.shdr.sh_size as usize, 0u8);
-            io_file.read_exact(&mut section.data)?;
+            reader.read_exact(&mut section.data)?;
         }
 
         // Parse the section names from the section header string table

src/parse.rs

@@ -35,6 +35,10 @@ impl<'data, D: Read + Seek> Reader<'data, D> {
         Reader{delegate: delegate, endian: endian}
     }
 
+    pub fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), std::io::Error> {
+        self.delegate.read_exact(buf)
+    }
+
     pub fn seek(&mut self, pos: std::io::SeekFrom) -> Result<u64, std::io::Error> {
         self.delegate.seek(pos)
     }