some smart buffer work.

IMFHeader.cpp

@@ -1,15 +1,18 @@
 #include "IMFHeader.h"
 #include "Exception.h"
 #include "Log.h"
-#include <iostream>
+#include <unistd.h>
 
 namespace coreutils {
 
    IMFHeader::IMFHeader(int fd) {
-      while(1) {
-	 headers.emplace(fd);	 
+      char ch;
+      int rc = ::read(fd, &ch, 1);
+      while(ch != 'r') {
+	 IMFHeaderField *headerField = new IMFHeaderField(ch, fd);
+	 headers.add(headerField);
       }
-      
+      rc = ::read(fd, &ch, 1);
    }
 
 }