Factor out MDB_SIZE_MAX, MDB_FMT_Y, MDB_FMT_Z

[platform/upstream/lmdb.git] / libraries / liblmdb / lmdb.h

diff --git a/libraries/liblmdb/lmdb.h b/libraries/liblmdb/lmdb.h
index d30ab64..92dd753 100644 (file)
--- a/libraries/liblmdb/lmdb.h
+++ b/libraries/liblmdb/lmdb.h
@@ -179,13 +179,32 @@ typedef   int     mdb_mode_t;
 typedef        mode_t  mdb_mode_t;
 #endif
 
+#ifdef _WIN32
+# define MDB_FMT_Z     "I"
+#else
+# define MDB_FMT_Z     "z"                     /**< printf/scanf format modifier for size_t */
+#endif
+
 #ifdef MDB_VL32
 typedef uint64_t       mdb_size_t;
+#define MDB_SIZE_MAX UINT64_MAX
+#ifdef _WIN32
+# define MDB_FMT_Y     "I64"
+#else
+# define MDB_FMT_Y     "ll"
+#endif
 #define mdb_env_create mdb_env_create_vl32     /**< Prevent mixing with non-VL32 builds */
 #else
 typedef size_t mdb_size_t;
+# define MDB_SIZE_MAX  SIZE_MAX        /**< max #mdb_size_t */
+# define MDB_FMT_Y             MDB_FMT_Z       /**< Obsolescent, see #MDB_PRIz()/#MDB_SCNz() */
 #endif
 
+/** #mdb_size_t printf formats, \b t = one of [diouxX] without quotes */
+#define MDB_PRIz(t)    MDB_FMT_Y #t
+/** #mdb_size_t scanf formats, \b t = one of [dioux] without quotes */
+#define MDB_SCNz(t)    MDB_FMT_Y #t
+
 /** An abstraction for a file handle.
  *     On POSIX systems file handles are small integers. On Windows
  *     they're opaque pointers.