Add GUID helper functions

[wimlib] / include / wimlib / guid.h

diff --git a/include/wimlib/guid.h b/include/wimlib/guid.h
new file mode 100644 (file)
index 0000000..be9a10f
--- /dev/null
+++ b/include/wimlib/guid.h
@@ -0,0 +1,40 @@
+/*
+ * guid.h
+ *
+ * Utility functions for handling 16-byte globally unique identifiers (GUIDs).
+ */
+
+#ifndef _WIMLIB_GUID_H
+#define _WIMLIB_GUID_H
+
+#include <string.h>
+
+#include "wimlib/util.h"
+
+#define GUID_SIZE    16
+
+static inline void
+copy_guid(u8 dest[GUID_SIZE], const u8 src[GUID_SIZE])
+{
+       memcpy(dest, src, GUID_SIZE);
+}
+
+static inline int
+cmp_guids(const u8 guid1[GUID_SIZE], const u8 guid2[GUID_SIZE])
+{
+       return memcmp(guid1, guid2, GUID_SIZE);
+}
+
+static inline bool
+guids_equal(const u8 guid1[GUID_SIZE], const u8 guid2[GUID_SIZE])
+{
+       return !cmp_guids(guid1, guid2);
+}
+
+static inline void
+generate_guid(u8 guid[GUID_SIZE])
+{
+       return randomize_byte_array(guid, GUID_SIZE);
+}
+
+#endif /* _WIMLIB_GUID_H */