migrating to linkedin driver

priv/sqlite3_drv.h

@@ -0,0 +1,35 @@
+#include <erl_driver.h>
+#include <ei.h>
+#include <stdio.h>
+#include <string.h>
+#include <sqlite3.h>
+
+// Path to file where data will be stored. 
+// It will be created if it doesn't exist
+#define DB_PATH "./store.db"
+
+// Binary commands between Erlang VM and Driver
+#define CMD_PUT 1
+#define CMD_GET 2
+#define CMD_DEL 3
+
+// Number of bytes for each key
+// (160 bits for SHA1 hash)
+#define KEY_SIZE 20
+
+// Define struct to hold state across calls
+typedef struct _bdb_drv_t {
+  ErlDrvPort port;
+ 
+  struct sqlite3 *db;
+} sqlite3_drv_t;
+
+
+static ErlDrvData start(ErlDrvPort port, char* cmd);
+static void stop(ErlDrvData handle);
+static void outputv(ErlDrvData handle, ErlIOVec *ev);
+static void ready_async(ErlDrvData drv_data, ErlDrvThreadData thread_data);
+// static void put(bdb_drv_t *bdb_drv, ErlIOVec *ev);
+// static void get(bdb_drv_t *bdb_drv, ErlIOVec *ev);
+// static void del(bdb_drv_t *bdb_drv, ErlIOVec *ev);
+static void unkown(sqlite3_drv_t *bdb_drv, ErlIOVec *ev);