1 files changed, 48 insertions, 0 deletions
diff --git a/shared/file_id_internal.h b/shared/file_id_internal.h
new file mode 100644
index 00000000..a8a7042d
--- /dev/null
+++ b/shared/file_id_internal.h
@@ -0,0 +1,48 @@
+// **************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under *
+// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
+// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de)                    *
+// **************************************************************************
+
+#ifndef FILE_ID_INTERNAL_HEADER_013287632486321493
+#define FILE_ID_INTERNAL_HEADER_013287632486321493
+
+#include <string>
+
+#ifdef FFS_WIN
+#include <wx/msw/wrapwin.h> //includes "windows.h"
+
+#elif defined FFS_LINUX
+#include <sys/stat.h>
+#endif
+
+namespace
+{
+template <class T> inline
+std::string numberToBytes(T number)
+{
+    const char* rawBegin = reinterpret_cast<const char*>(&number);
+    return std::string(rawBegin, rawBegin + sizeof(number));
+}
+
+#ifdef FFS_WIN
+inline
+std::string extractFileID(const BY_HANDLE_FILE_INFORMATION& fileInfo)
+{
+    return numberToBytes(fileInfo.dwVolumeSerialNumber) +
+           numberToBytes(fileInfo.nFileIndexHigh) +
+           numberToBytes(fileInfo.nFileIndexLow);
+}
+#elif defined FFS_LINUX
+inline
+std::string extractFileID(const struct stat& fileInfo)
+{
+    return numberToBytes(fileInfo.st_dev) +
+           numberToBytes(fileInfo.st_ino);
+}
+#endif
+
+}
+
+
+#endif //FILE_ID_INTERNAL_HEADER_013287632486321493