Optimize char_scanner if used with ifdstream

1 files changed, 10 insertions, 2 deletions

diff --git a/libbutl/fdstream.hxx b/libbutl/fdstream.hxx
index e1f5790..dd33263 100644
--- a/libbutl/fdstream.hxx
+++ b/libbutl/fdstream.hxx
@@ -122,8 +122,10 @@ namespace butl
     fd () const {return fd_.get ();}
 
   public:
-    using int_type = std::basic_streambuf<char>::int_type;
-    using traits_type = std::basic_streambuf<char>::traits_type;
+    using base = std::basic_streambuf<char>;
+
+    using int_type = base::int_type;
+    using traits_type = base::traits_type;
 
     // basic_streambuf input interface.
     //
@@ -134,6 +136,12 @@ namespace butl
     virtual int_type
     underflow ();
 
+    // Direct access to the get area. Use with caution.
+    //
+    using base::gptr;
+    using base::egptr;
+    using base::gbump;
+
   private:
     bool
     load ();