X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb-python/blobdiff_plain/e21f11bb2a7263033cb017793b6ec8ef33c91966..27cbcf9d360a7b25e54c4e268db5889246015440:/buffer.c

diff --git a/buffer.c b/buffer.c
index 5b7bb64..49ed9d2 100644
--- a/buffer.c
+++ b/buffer.c
@@ -46,7 +46,7 @@ static PyTypeObject *rbuf_pytype, *wbuf_pytype;
 
 static PyObject *buferr;
 
-#define BUFERR() do { PyErr_SetNone(buferr); goto end; } while (0)
+#define BUFERR(str) do { PyErr_SetString(buferr, str); goto end; } while (0)
 
 /*----- Read buffers ------------------------------------------------------*/
 
@@ -88,7 +88,7 @@ static PyObject *rbmeth_skip(PyObject *me, PyObject *arg)
   size_t n;
 
   if (!PyArg_ParseTuple(arg, "O&:skip", convszt, &n)) goto end;
-  if (!buf_get(BUF_B(me), n)) BUFERR();
+  if (!buf_get(BUF_B(me), n)) BUFERR("buffer exhausted");
   RETURN_ME;
 end:
   return (0);
@@ -100,7 +100,7 @@ static PyObject *rbmeth_get(PyObject *me, PyObject *arg)
   size_t n;
 
   if (!PyArg_ParseTuple(arg, "O&:get", convszt, &n)) goto end;
-  if ((p = buf_get(BUF_B(me), n)) == 0) BUFERR();
+  if ((p = buf_get(BUF_B(me), n)) == 0) BUFERR("buffer exhausted");
   return (bytestring_pywrap(p, n));
 end:
   return (0);
@@ -111,7 +111,7 @@ end:
   {									\
     uint##n x;								\
     if (!PyArg_ParseTuple(arg, ":getu" #w)) goto end;			\
-    if (buf_getu##w(BUF_B(me), &x)) BUFERR();				\
+    if (buf_getu##w(BUF_B(me), &x)) BUFERR("buffer exhausted");		\
     if (MASK##W <= ULONG_MAX) return (getulong(x));			\
     else { kludge64 y; ASSIGN64(y, x); return (getk64(y)); }		\
   end:									\
@@ -125,7 +125,8 @@ DOUINTCONV(RBMETH_GETU_)
     size_t sz;								\
     char *q;								\
     if (!PyArg_ParseTuple(arg, ":getblk" #w)) goto end;			\
-    if ((q = buf_getmem##w(BUF_B(me), &sz)) == 0) BUFERR();		\
+    if ((q = buf_getmem##w(BUF_B(me), &sz)) == 0)			\
+      BUFERR("buffer exhausted");					\
     return (bytestring_pywrap(q, sz));					\
   end:									\
     return (0);								\
@@ -138,7 +139,7 @@ BUF_DOSUFFIXES(RBMETH_GETBLK_)
     buf_pyobj *b;							\
     buf bb;								\
     if (!PyArg_ParseTuple(arg, ":getbuf" #w)) goto end;			\
-    if (buf_getbuf##w(BUF_B(me), &bb)) BUFERR();			\
+    if (buf_getbuf##w(BUF_B(me), &bb)) BUFERR("buffer exhausted");	\
     b = PyObject_NEW(buf_pyobj, rbuf_pytype);				\
     b->b = bb;								\
     b->sub = me;							\
@@ -153,7 +154,7 @@ static PyObject *rbmeth_getmp(PyObject *me, PyObject *arg)
 {
   mp *x;
   if (!PyArg_ParseTuple(arg, ":getmp")) goto end;
-  if ((x = buf_getmp(BUF_B(me))) == 0) BUFERR();
+  if ((x = buf_getmp(BUF_B(me))) == 0) BUFERR("buffer exhausted");
   return (mp_pywrap(x));
 end:
   return (0);
@@ -163,7 +164,7 @@ static PyObject *rbmeth_getgf(PyObject *me, PyObject *arg)
 {
   mp *x;
   if (!PyArg_ParseTuple(arg, ":getgf")) goto end;
-  if ((x = buf_getmp(BUF_B(me))) == 0) BUFERR();
+  if ((x = buf_getmp(BUF_B(me))) == 0) BUFERR("buffer exhausted");
   return (gf_pywrap(x));
 end:
   return (0);
@@ -180,7 +181,7 @@ static PyObject *rbmeth_getecpt(PyObject *me, PyObject *arg, PyObject *kw)
   if (!PyType_Check(cobj) ||
       !PyType_IsSubtype((PyTypeObject *)cobj, ecpt_pytype))
     TYERR("expected elliptic curve type");
-  if (buf_getec(BUF_B(me), &pt)) BUFERR();
+  if (buf_getec(BUF_B(me), &pt)) BUFERR("buffer exhausted");
   return (ecpt_pywrapout(cobj, &pt));
 end:
   return (0);
@@ -192,7 +193,7 @@ static PyObject *rbmeth_getecptraw(PyObject *me, PyObject *arg)
   ec pt = EC_INIT;
   if (!PyArg_ParseTuple(arg, "O!:getecptraw", eccurve_pytype, &cobj))
     goto end;
-  if (ec_getraw(ECCURVE_C(cobj), BUF_B(me), &pt)) BUFERR();
+  if (ec_getraw(ECCURVE_C(cobj), BUF_B(me), &pt)) BUFERR("buffer exhausted");
   return (ecpt_pywrapout(cobj, &pt));
 end:
   return (0);
@@ -204,7 +205,7 @@ static PyObject *rbmeth_getge(PyObject *me, PyObject *arg)
   ge *x = 0;
   if (!PyArg_ParseTuple(arg, "O!:getge", group_pytype, &gobj)) goto end;
   x = G_CREATE(GROUP_G(gobj));
-  if (G_FROMBUF(GROUP_G(gobj), BUF_B(me), x)) BUFERR();
+  if (G_FROMBUF(GROUP_G(gobj), BUF_B(me), x)) BUFERR("buffer exhausted");
   return (ge_pywrap(gobj, x));
 end:
   if (x) G_DESTROY(GROUP_G(gobj), x);
@@ -217,7 +218,7 @@ static PyObject *rbmeth_getgeraw(PyObject *me, PyObject *arg)
   ge *x = 0;
   if (!PyArg_ParseTuple(arg, "O!:getgeraw", group_pytype, &gobj)) goto end;
   x = G_CREATE(GROUP_G(gobj));
-  if (G_FROMRAW(GROUP_G(gobj), BUF_B(me), x)) BUFERR();
+  if (G_FROMRAW(GROUP_G(gobj), BUF_B(me), x)) BUFERR("buffer exhausted");
   return (ge_pywrap(gobj, x));
 end:
   if (x) G_DESTROY(GROUP_G(gobj), x);
@@ -244,40 +245,40 @@ end:
   return (-1);
 }
 
-static PyGetSetDef rbuf_pygetset[] = {
+static const PyGetSetDef rbuf_pygetset[] = {
 #define GETSETNAME(op, name) rb##op##_##name
-  GET	(size,			"RBUF.size -> SIZE")
-  GET	(left,			"RBUF.left -> REMAINDER")
-  GET	(endp,			"RBUF.endp -> BOOL")
-  GETSET(offset,		"RBUF.offset -> OFFSET")
+  GET	(size,		"RBUF.size -> SIZE")
+  GET	(left,		"RBUF.left -> REMAINDER")
+  GET	(endp,		"RBUF.endp -> BOOL")
+  GETSET(offset,	"RBUF.offset -> OFFSET")
 #undef GETSETNAME
   { 0 }
 };
 
-static PyMethodDef rbuf_pymethods[] = {
+static const PyMethodDef rbuf_pymethods[] = {
 #define METHNAME(func) rbmeth_##func
-  METH	(skip,			"RBUF.skip(N)")
-  METH	(get,			"RBUF.get(N) -> BYTES")
+  METH	(skip,		"RBUF.skip(N)")
+  METH	(get,		"RBUF.get(N) -> BYTES")
 #define RBMETH_DECL_GETU_(n, W, w)					\
-    METH(getu##w, "RBUF.getu" #w "() -> INT")
+    METH(getu##w,	"RBUF.getu" #w "() -> INT")
   DOUINTCONV(RBMETH_DECL_GETU_)
 #define RBMETH_DECL_GETBLK_(n, W, w)					\
-    METH(getblk##w, "RBUF.getblk" #w "() -> BYTES")
+    METH(getblk##w,	"RBUF.getblk" #w "() -> BYTES")
   BUF_DOSUFFIXES(RBMETH_DECL_GETBLK_)
 #define RBMETH_DECL_GETBUF_(n, W, w)					\
-    METH(getbuf##w, "RBUF.getbuf" #w "() -> RBUF'")
+    METH(getbuf##w,	"RBUF.getbuf" #w "() -> RBUF'")
   BUF_DOSUFFIXES(RBMETH_DECL_GETBUF_)
-  METH	(getmp,			"RBUF.getmp() -> X")
-  METH	(getgf,			"RBUF.getgf() -> X")
-  KWMETH(getecpt,		"RBUF.getecpt([curve = None]) -> P")
-  METH	(getecptraw,		"RBUF.getecptraw(CURVE) -> P")
-  METH	(getge,			"RBUF.getge(GROUP) -> X")
-  METH	(getgeraw,		"RBUF.getgeraw(GROUP) -> X")
+  METH	(getmp,		"RBUF.getmp() -> X")
+  METH	(getgf,		"RBUF.getgf() -> X")
+  KWMETH(getecpt,	"RBUF.getecpt([curve = None]) -> P")
+  METH	(getecptraw,	"RBUF.getecptraw(CURVE) -> P")
+  METH	(getge,		"RBUF.getge(GROUP) -> X")
+  METH	(getgeraw,	"RBUF.getgeraw(GROUP) -> X")
 #undef METHNAME
   { 0 }
 };
 
-static PyBufferProcs rbuf_pybuffer = {
+static const PyBufferProcs rbuf_pybuffer = {
   rbuf_pyreadbuf,			/* @bf_getreadbuffer@ */
   0,					/* @bf_getwritebuffer@ */
   rbuf_pysegcount,			/* @bf_getsegcount@ */
@@ -304,12 +305,12 @@ static PyTypeObject rbuf_pytype_skel = {
   0,					/* @tp_str@ */
   0,					/* @tp_getattro@ */
   0,					/* @tp_setattro@ */
-  &rbuf_pybuffer,			/* @tp_as_buffer@ */
+  PYBUFFER(rbuf),			/* @tp_as_buffer@ */
   Py_TPFLAGS_DEFAULT |			/* @tp_flags@ */
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"ReadBuffer(STR): a read buffer.",
+  "ReadBuffer(STR): a read buffer.",
 
   0,					/* @tp_traverse@ */
   0,					/* @tp_clear@ */
@@ -317,9 +318,9 @@ static PyTypeObject rbuf_pytype_skel = {
   0,					/* @tp_weaklistoffset@ */
   0,					/* @tp_iter@ */
   0,					/* @tp_iternext@ */
-  rbuf_pymethods,			/* @tp_methods@ */
+  PYMETHODS(rbuf),			/* @tp_methods@ */
   0,					/* @tp_members@ */
-  rbuf_pygetset,			/* @tp_getset@ */
+  PYGETSET(rbuf),			/* @tp_getset@ */
   0,					/* @tp_base@ */
   0,					/* @tp_dict@ */
   0,					/* @tp_descr_get@ */
@@ -489,35 +490,35 @@ static PyObject *wbget_size(PyObject *me, void *hunoz)
 static PyObject *wbget_contents(PyObject *me, void *hunoz)
   { return (bytestring_pywrap(BBASE(BUF_B(me)), BLEN(BUF_B(me)))); }
 
-static PyGetSetDef wbuf_pygetset[] = {
+static const PyGetSetDef wbuf_pygetset[] = {
 #define GETSETNAME(op, name) wb##op##_##name
-  GET	(size,			"WBUF.size -> SIZE")
-  GET	(contents,		"WBUF.contents -> STR")
+  GET	(size,		"WBUF.size -> SIZE")
+  GET	(contents,	"WBUF.contents -> STR")
 #undef GETSETNAME
   { 0 }
 };
 
-static PyMethodDef wbuf_pymethods[] = {
+static const PyMethodDef wbuf_pymethods[] = {
 #define METHNAME(func) wbmeth_##func
-  METH	(zero,			"WBUF.zero(N)")
-  METH	(put,			"WBUF.put(BYTES)")
+  METH	(zero,		"WBUF.zero(N)")
+  METH	(put,		"WBUF.put(BYTES)")
 #define WBMETH_DECL_PUTU_(n, W, w)					\
-    METH(putu##w, "WBUF.putu" #w "(INT)")
+    METH(putu##w,	"WBUF.putu" #w "(INT)")
   DOUINTCONV(WBMETH_DECL_PUTU_)
 #define WBMETH_DECL_PUTBLK_(n, W, w)					\
-    METH(putblk##w, "WBUF.putblk" #w "(BYTES)")
+    METH(putblk##w,	"WBUF.putblk" #w "(BYTES)")
   BUF_DOSUFFIXES(WBMETH_DECL_PUTBLK_)
-  METH	(putmp,			"WBUF.putmp(X)")
-  METH	(putgf,			"WBUF.putgf(X)")
-  METH	(putecpt,		"WBUF.putecpt(P)")
-  METH	(putecptraw,		"WBUF.putecptraw(P)")
-  METH	(putge,			"WBUF.putge(X)")
-  METH	(putgeraw,		"WBUF.putgeraw(X)")
+  METH	(putmp,		"WBUF.putmp(X)")
+  METH	(putgf,		"WBUF.putgf(X)")
+  METH	(putecpt,	"WBUF.putecpt(P)")
+  METH	(putecptraw,	"WBUF.putecptraw(P)")
+  METH	(putge,		"WBUF.putge(X)")
+  METH	(putgeraw,	"WBUF.putgeraw(X)")
 #undef METHNAME
   { 0 }
 };
 
-static PyBufferProcs wbuf_pybuffer = {
+static const PyBufferProcs wbuf_pybuffer = {
   wbuf_pyreadbuf,			/* @bf_getreadbuffer@ */
   0,					/* @bf_getwritebuffer@ */
   wbuf_pysegcount,			/* @bf_getsegcount@ */
@@ -544,12 +545,12 @@ static PyTypeObject wbuf_pytype_skel = {
   0,					/* @tp_str@ */
   0,					/* @tp_getattro@ */
   0,					/* @tp_setattro@ */
-  &wbuf_pybuffer,			/* @tp_as_buffer@ */
+  PYBUFFER(wbuf),			/* @tp_as_buffer@ */
   Py_TPFLAGS_DEFAULT |			/* @tp_flags@ */
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"WriteBuffer([size = ?]): a write buffer.",
+  "WriteBuffer([size = ?]): a write buffer.",
 
   0,					/* @tp_traverse@ */
   0,					/* @tp_clear@ */
@@ -557,9 +558,9 @@ static PyTypeObject wbuf_pytype_skel = {
   0,					/* @tp_weaklistoffset@ */
   0,					/* @tp_iter@ */
   0,					/* @tp_iternext@ */
-  wbuf_pymethods,			/* @tp_methods@ */
+  PYMETHODS(wbuf),			/* @tp_methods@ */
   0,					/* @tp_members@ */
-  wbuf_pygetset,			/* @tp_getset@ */
+  PYGETSET(wbuf),			/* @tp_getset@ */
   0,					/* @tp_base@ */
   0,					/* @tp_dict@ */
   0,					/* @tp_descr_get@ */