From 96c6be977343471ee20e442bee42d93949421451 Mon Sep 17 00:00:00 2001
From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Fri, 26 May 2017 07:34:39 +0200
Subject: [PATCH] more utility code

---
 src/io/byteio.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/io/byteio.rs b/src/io/byteio.rs
index 9fee3bd..497e8cc 100644
--- a/src/io/byteio.rs
+++ b/src/io/byteio.rs
@@ -190,6 +190,16 @@ impl<'a> ByteReader<'a> {
     pub fn is_eof(&mut self) -> bool {
         self.io.is_eof()
     }
+
+    pub fn size(&mut self) -> i64 {
+        self.io.size()
+    }
+
+    pub fn left(&mut self) -> i64 {
+        let size = self.io.size();
+        if size == -1 { return -1; }
+        return size - (self.io.tell() as i64)
+    }
 }
 
 impl<'a> MemoryReader<'a> {
-- 
2.39.5