Add a simple utility to dump flattened BMessages. Added it to the image as well.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31897 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/bin/message.cpp

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2009, Michael Lotz, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+
+#include <File.h>
+#include <Message.h>
+
+#include <stdio.h>
+#include <string.h>
+
+
+int
+main(int argc, char *argv[])
+{
+	if (argc != 2) {
+		printf("usage: %s <flattened message file>\n", argv[0]);
+		return 1;
+	}
+
+	BFile input(argv[1], B_READ_ONLY);
+	if (!input.IsReadable()) {
+		printf("cannot open \"%s\" for reading\n", argv[1]);
+		return 2;
+	}
+
+	BMessage message;
+	status_t result = message.Unflatten(&input);
+	if (result != B_OK) {
+		printf("failed to unflatten message: %s\n", strerror(result));
+		return 3;
+	}
+
+	message.PrintToStream();
+	return 0;
+}