io: give mapped_file begin/end accessors

io.cpp

@@ -233,5 +233,30 @@ mapped_file::data (void) const {
 
     return m_data;
 }
+
+
+uint8_t*
+mapped_file::begin (void) {
+    return data ();
+}
+
+
+uint8_t*
+mapped_file::end (void) {
+    return data () + size ();
+}
+
+
+const uint8_t*
+mapped_file::begin (void) const {
+    return data ();
+}
+
+
+const uint8_t*
+mapped_file::end (void) const {
+    return data () + size ();
+}
+
 #endif
 

io.hpp

@@ -126,6 +126,12 @@ namespace util {
             const uint8_t* data (void) const;
             uint8_t*       data (void);
             size_t         size (void) const;
+
+            uint8_t*       begin (void);
+            uint8_t*       end   (void);
+
+            const uint8_t* begin (void) const;
+            const uint8_t* end   (void) const;
     };
 #endif