1 files changed, 30 insertions, 1 deletions

diff --git a/src/nids.h b/src/nids.h
index 9954146..e364289 100644
--- a/src/nids.h
+++ b/src/nids.h
@@ -1,9 +1,13 @@
 #ifndef BU_NIDS_H
 #define BU_NIDS_H
 
+#include <stdint.h>
+#include "bu/bitstring.h"
+
 namespace Bu
 {
         class Stream;
+        class NidsStream;
 
         /**
          * Numerically Indexed Data Streams.  This is a working name so I can
@@ -14,6 +18,7 @@ namespace Bu
          */
         class Nids
         {
+                friend class NidsStream;
         public:
                 Nids( Bu::Stream &sStore );
                 virtual ~Nids();
@@ -39,10 +44,34 @@ namespace Bu
                 /**
                  * Return a new Stream object assosiated with the given stream ID.
                  */
-                Bu::Stream &openStream( int iID );
+                NidsStream openStream( int iID );
+
+        private:
+                typedef struct Block
+                {
+                        uint32_t iFirstBlock;
+                        uint32_t iNextBlock;
+                        uint32_t iPrevBlock;
+                        uint32_t iBytesUsed;
+                        uint32_t iReserved;
+                        unsigned char pData[0];
+                } Block;
+
+                enum
+                {
+                        blockUnused     =       0xFFFFFFFFUL
+                };
+
+                void extendStream( int iID, int iBlockCount=1 );
+                void getBlock( int iIndex, struct Nids::Block *pBlock );
+                void setBlock( int iIndex, struct Nids::Block *pBlock );
 
         private:
                 Bu::Stream &sStore;
+                int iBlockSize;
+                int iBlocks;
+                int iBlockStart;
+                Bu::BitString bsBlockUsed;
         };
 };