X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/blobdiff_plain/e91d142c49f0ff129a087f2b66380bd7c5da0617..7b0d1a63587f3cb1ae3bb8b248bbb1b82bdca7bd:/symm/hash.h

diff --git a/symm/hash.h b/symm/hash.h
index eb3cd75e..3d0c1179 100644
--- a/symm/hash.h
+++ b/symm/hash.h
@@ -38,6 +38,10 @@
 
 #include <mLib/bits.h>
 
+#ifndef CATACOMB_RSVR_H
+#  include "rsvr.h"
+#endif
+
 /*----- Macros ------------------------------------------------------------*/
 
 /* --- @HASH_BUFFER@ --- *
@@ -58,7 +62,10 @@
 #define HASH_BUFFER(PRE, pre, ictx, ibuf, isz) do {			\
   pre##_ctx *_bctx = (ictx);						\
   size_t _bsz = (isz);							\
-  const octet *_bbuf = (octet *)(ibuf);					\
+  const octet *_bbuf = (octet *)(ibuf), *_p;				\
+  static const rsvr_policy _pol = { 0, PRE##_BUFSZ, PRE##_BUFSZ };	\
+  uint32 _l, _h;							\
+  rsvr_state _st;							\
 									\
   /* --- Add on the size done so far --- *				\
    *									\
@@ -66,44 +73,15 @@
    * how many bits you've actually got.					\
    */									\
 									\
-  {									\
-    uint32 _l = U32(_bsz);						\
-    uint32 _h = ((_bsz & ~(size_t)MASK32) >> 16) >> 16;			\
-    _bctx->nh += _h;							\
-    _bctx->nl += _l;							\
-    if (_bctx->nl < _l || _bctx->nl & ~(uint32)MASK32)			\
-      _bctx->nh++;							\
-  }									\
-									\
-  /* --- Handle very small contributions --- */				\
-									\
-  if (_bctx->off + _bsz < PRE##_BUFSZ) {				\
-    memcpy(_bctx->buf + _bctx->off, _bbuf, _bsz);			\
-    _bctx->off += _bsz;							\
-  } else {								\
-									\
-    /* --- Handle an initial partial buffer --- */			\
+  _l = U32(_bsz); _h = ((_bsz & ~(size_t)MASK32) >> 16) >> 16;		\
+  _bctx->nl += _l; if (_bctx->nl < _l || _bctx->nl & ~(uint32)MASK32) _h++; \
+  _bctx->nh += _h;							\
 									\
-    if (_bctx->off) {							\
-      size_t s = PRE##_BUFSZ - _bctx->off;				\
-      memcpy(_bctx->buf + _bctx->off, _bbuf, s);			\
-      pre##_compress(_bctx, _bctx->buf);				\
-      _bsz -= s; _bbuf += s;						\
-    }									\
-									\
-    /* --- Do whole buffers while we can --- */				\
-									\
-    while (_bsz >= PRE##_BUFSZ) {					\
-      pre##_compress(_bctx, _bbuf);					\
-      _bsz -= PRE##_BUFSZ; _bbuf += PRE##_BUFSZ;			\
-    }									\
-									\
-    /* --- And wrap up at the end --- */				\
+  /* --- Accumulate the input data --- */				\
 									\
-    if (_bsz)								\
-      memcpy(_bctx->buf, _bbuf, _bsz);					\
-    _bctx->off = _bsz;							\
-  }									\
+  rsvr_setup(&_st, &_pol, _bctx->buf, &_bctx->off, _bbuf, _bsz);	\
+  RSVR_DO(&_st) while ((_p = RSVR_NEXT(&_st, PRE##_BUFSZ)) != 0)	\
+    pre##_compress(_bctx, _p);						\
 } while (0)
 
 /* --- @HASH_PAD@ --- *