This is all the code for the backing store for BMessage (BMessageBody &

BMessageField) for the "template madness" version.  Also included is
BDataBuffer which is a little reference counting raw data container.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2955 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/app/MessageUtils.cpp

@@ -0,0 +1,57 @@
+//------------------------------------------------------------------------------
+//	MessageUtils.cpp
+//
+//------------------------------------------------------------------------------
+
+// Standard Includes -----------------------------------------------------------
+
+// System Includes -------------------------------------------------------------
+
+// Project Includes ------------------------------------------------------------
+#include <MessageUtils.h>
+
+// Local Includes --------------------------------------------------------------
+
+// Local Defines ---------------------------------------------------------------
+
+// Globals ---------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+uint32 _checksum_(const uchar* buf, int32 size)
+{
+	uint32 sum = 0;
+	uint32 temp = 0;
+
+	while (size > 3) {
+#if defined(__INTEL__)
+		sum += B_SWAP_INT32(*(int*)buf);
+#else
+		sum += *(int*)buf;
+#endif
+
+		buf += 4;
+		size -= 4;
+	}
+
+	while (size > 0) {
+		temp = (temp << 8) + *buf++;
+		size -= 1;
+		sum += temp;
+	}
+
+	return sum;
+}
+//------------------------------------------------------------------------------
+int32 TChecksumHelper::CheckSum()
+{
+	 return _checksum_(fBuffer, fBufPtr - fBuffer);
+}
+//------------------------------------------------------------------------------
+
+/*
+ * $Log $
+ *
+ * $Id  $
+ *
+ */
+