/* -*-c-*-
*
- * $Id$
- *
* Byte strings
*
* (c) 2004 Straylight/Edgeware
*/
-/*----- Licensing notice --------------------------------------------------*
+/*----- Licensing notice --------------------------------------------------*
*
* This file is part of the Python interface to Catacomb.
*
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* Catacomb/Python is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with Catacomb/Python; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
PyTypeObject *bytestring_pytype;
-PyObject *bytestring_pywrap(const void *p, size_t n)
+static PyObject *empty, *bytev[256];
+
+static PyObject *allocate(PyTypeObject *ty, size_t n)
{
- PyStringObject *x = PyObject_NewVar(PyStringObject, bytestring_pytype, n);
- if (p) memcpy(x->ob_sval, p, n);
+ PyStringObject *x;
+ x = (PyStringObject *)ty->tp_alloc(ty, n);
x->ob_sval[n] = 0;
-#ifdef CACHE_HASH
+#if defined(CACHE_HASH) || PY_VERSION_HEX >= 0x02030000
x->ob_shash = -1;
#endif
x->ob_sstate = SSTATE_NOT_INTERNED;
return ((PyObject *)x);
}
+static PyObject *dowrap(PyTypeObject *ty, const void *p, size_t n)
+{
+ PyObject *x;
+ int ch;
+
+ if (p && ty == bytestring_pytype) {
+ if (!n) {
+ if (!empty) empty = allocate(ty, 0);
+ Py_INCREF(empty); return (empty);
+ } else if (n == 1 && (ch = *(unsigned char *)p) < sizeof(bytev)) {
+ if (!bytev[ch])
+ { bytev[ch] = allocate(ty, 1); *PyString_AS_STRING(bytev[ch]) = ch; }
+ Py_INCREF(bytev[ch]); return (bytev[ch]);
+ }
+ }
+
+ x = allocate(ty, n);
+ if (p) memcpy(PyString_AS_STRING(x), p, n);
+ return (x);
+}
+
+PyObject *bytestring_pywrap(const void *p, size_t n)
+ { return (dowrap(bytestring_pytype, p, n)); }
+
PyObject *bytestring_pywrapbuf(buf *b)
- { return bytestring_pywrap(BCUR(b), BLEFT(b)); }
+ { return (dowrap(bytestring_pytype, BCUR(b), BLEFT(b))); }
+
+static PyObject *bytestring_pynew(PyTypeObject *ty,
+ PyObject *arg, PyObject *kw)
+{
+ const char *p;
+ Py_ssize_t n;
+ static const char *const kwlist[] = { "data", 0 };
+ if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", KWLIST, &p, &n))
+ return (0);
+ return (dowrap(ty, p, n));
+}
+
+static PyObject *meth_ctstreq(PyObject *me, PyObject *arg)
+{
+ char *p, *q;
+ Py_ssize_t psz, qsz;
+ if (!PyArg_ParseTuple(arg, "s#s#:ctstreq", &p, &psz, &q, &qsz))
+ goto end;
+ if (psz == qsz && ct_memeq(p, q, psz)) RETURN_TRUE;
+ else RETURN_FALSE;
+end:
+ return (0);
+}
+
+static PyObject *meth__ByteString_zero(PyObject *me, PyObject *arg)
+{
+ size_t sz;
+ PyObject *rc = 0;
+ if (!PyArg_ParseTuple(arg, "OO&:zero", &me, convszt, &sz)) goto end;
+ rc = bytestring_pywrap(0, sz);
+ memset(PyString_AS_STRING(rc), 0, sz);
+end:
+ return (rc);
+}
+
+static PyObject *bytestring_pyrichcompare(PyObject *me,
+ PyObject *you, int op)
+{
+ int b;
+ void *mystr, *yourstr;
+ Py_ssize_t mylen, yourlen, minlen;
+
+ if (!PyString_Check(me) || !PyString_Check(you)) RETURN_NOTIMPL;
+ mystr = PyString_AS_STRING(me); mylen = PyString_GET_SIZE(me);
+ yourstr = PyString_AS_STRING(you); yourlen = PyString_GET_SIZE(you);
+
+ switch (op) {
+ case Py_EQ:
+ b = mylen == yourlen && ct_memeq(mystr, yourstr, mylen);
+ break;
+ case Py_NE:
+ b = mylen != yourlen || !ct_memeq(mystr, yourstr, mylen);
+ break;
+ default:
+ minlen = mylen < yourlen ? mylen : yourlen;
+ b = memcmp(mystr, yourstr, minlen);
+ if (!b) b = mylen < yourlen ? -1 : mylen > yourlen ? +1 : 0;
+ switch (op) {
+ case Py_LT: b = b < 0; break;
+ case Py_LE: b = b <= 0; break;
+ case Py_GE: b = b >= 0; break;
+ case Py_GT: b = b > 0; break;
+ default: abort();
+ }
+ }
+ if (b) RETURN_TRUE;
+ else RETURN_FALSE;
+}
+
+static PyObject *bytestring_pyconcat(PyObject *x, PyObject *y)
+{
+ const void *xv; Py_ssize_t xsz;
+ const void *yv; Py_ssize_t ysz;
+ PyObject *z = 0; char *zp; size_t zsz;
+
+ if (PyObject_AsReadBuffer(x, &xv, &xsz) ||
+ PyObject_AsReadBuffer(y, &yv, &ysz))
+ goto end;
+ zsz = (size_t)xsz + (size_t)ysz;
+ if (xsz < 0 || ysz < 0 || zsz < xsz) VALERR("too long");
+ z = bytestring_pywrap(0, zsz); zp = PyString_AS_STRING(z);
+ memcpy(zp, xv, xsz); memcpy(zp + xsz, yv, ysz);
+end:
+ return (z);
+}
+
+static PyObject *bytestring_pyrepeat(PyObject *me, Py_ssize_t n)
+{
+ const unsigned char *xp; size_t xsz;
+ PyObject *z = 0; char *zp; size_t zsz;
+
+ xp = (const unsigned char *)PyString_AS_STRING(me);
+ xsz = PyString_GET_SIZE(me);
+ if (n < 0 || (n && xsz >= (size_t)-1/n)) VALERR("too long");
+ zsz = n*xsz; z = bytestring_pywrap(0, zsz); zp = PyString_AS_STRING(z);
+ if (xsz == 1) memset(zp, *xp, zsz);
+ else while (zsz) { memcpy(zp, xp, xsz); zp += xsz; zsz -= xsz; }
+end:
+ return (z);
+}
+
+static PyObject *bytestring_pyitem(PyObject *me, Py_ssize_t i)
+{
+ PyObject *rc = 0;
+
+ if (i < 0 || i >= PyString_GET_SIZE(me)) IXERR("out of range");
+ rc = bytestring_pywrap(PyString_AS_STRING(me) + i, 1);
+end:
+ return (rc);
+}
+
+static PyObject *bytestring_pyslice(PyObject *me, Py_ssize_t i, Py_ssize_t j)
+{
+ PyObject *rc = 0;
+ size_t n = PyString_GET_SIZE(me);
+
+ if (i < 0) i = 0;
+ if (j < 0) j = 0;
+ else if (j > n) j = n;
+ if (j < i) i = j = 0;
+ if (i == 0 && j == n && me->ob_type == bytestring_pytype)
+ { Py_INCREF(me); rc = me; goto end; }
+ rc = bytestring_pywrap(PyString_AS_STRING(me) + i, j - i);
+end:
+ return (rc);
+}
+
+static PyObject *bytestring_pysubscript(PyObject *me, PyObject *ix)
+{
+ Py_ssize_t i, j, k, n;
+ const unsigned char *p;
+ unsigned char *q;
+ PyObject *rc = 0;
+
+ if (PyIndex_Check(ix)) {
+ i = PyNumber_AsSsize_t(ix, PyExc_IndexError);
+ if (i == -1 && PyErr_Occurred()) return (0);
+ if (i < 0) i += PyString_GET_SIZE(me);
+ rc = bytestring_pyitem(me, i);
+ } else if (PySlice_Check(ix)) {
+ if (PySlice_GetIndicesEx((PySliceObject *)ix, PyString_GET_SIZE(me),
+ &i, &j, &k, &n))
+ return (0);
+ if (k == 1) return bytestring_pyslice(me, i, j);
+ rc = bytestring_pywrap(0, n);
+ p = (unsigned char *)PyString_AS_STRING(me) + i;
+ q = (unsigned char *)PyString_AS_STRING(rc);
+ while (n--) { *q++ = *p; p += k; }
+ } else
+ TYERR("wanted integer or slice");
+end:
+ return (rc);
+}
#define BINOP(name, op) \
static PyObject *bytestring_py##name(PyObject *x, PyObject *y) { \
const void *xv, *yv; \
const unsigned char *xp, *yp; \
unsigned char *zp; \
- int xsz, ysz; \
+ Py_ssize_t xsz, ysz; \
int i; \
PyObject *rc = 0; \
if (PyObject_AsReadBuffer(x, &xv, &xsz) || \
const void *xv; \
const unsigned char *xp; \
unsigned char *zp; \
- int xsz; \
+ Py_ssize_t xsz; \
int i; \
PyObject *rc = 0; \
if (PyObject_AsReadBuffer(x, &xv, &xsz)) goto end; \
0, /* @nb_hex@ */
};
+static PySequenceMethods bytestring_pysequence = {
+ 0, /* @sq_length@ */
+ bytestring_pyconcat, /* @sq_concat@ */
+ bytestring_pyrepeat, /* @sq_repeat@ */
+ bytestring_pyitem, /* @sq_item@ */
+ bytestring_pyslice, /* @sq_slice@ */
+ 0, /* @sq_ass_item@ */
+ 0, /* @sq_ass_slice@ */
+ 0, /* @sq_contains@ */
+ 0, /* @sq_inplace_concat@ */
+ 0, /* @sq_inplace_repeat@ */
+};
+
+static PyMappingMethods bytestring_pymapping = {
+ 0, /* @mp_length@ */
+ bytestring_pysubscript, /* @mp_subscript@ */
+ 0, /* @mp_ass_subscript@ */
+};
+
static PyBufferProcs bytestring_pybuffer;
static PyTypeObject bytestring_pytype_skel = {
PyObject_HEAD_INIT(0) 0, /* Header */
- "catacomb.ByteString", /* @tp_name@ */
+ "ByteString", /* @tp_name@ */
0, /* @tp_basicsize@ */
0, /* @tp_itemsize@ */
0, /* @tp_compare@ */
0, /* @tp_repr@ */
&bytestring_pynumber, /* @tp_as_number@ */
- 0, /* @tp_as_sequence@ */
- 0, /* @tp_as_mapping@ */
+ &bytestring_pysequence, /* @tp_as_sequence@ */
+ &bytestring_pymapping, /* @tp_as_mapping@ */
0, /* @tp_hash@ */
0, /* @tp_call@ */
0, /* @tp_str@ */
Py_TPFLAGS_BASETYPE,
/* @tp_doc@ */
-"Byte string class.",
+"ByteString(STR): byte string class.",
0, /* @tp_traverse@ */
0, /* @tp_clear@ */
- 0, /* @tp_richcompare@ */
+ bytestring_pyrichcompare, /* @tp_richcompare@ */
0, /* @tp_weaklistoffset@ */
0, /* @tp_iter@ */
- 0, /* @tp_iternexr@ */
+ 0, /* @tp_iternext@ */
0, /* @tp_methods@ */
0, /* @tp_members@ */
0, /* @tp_getset@ */
0, /* @tp_dictoffset@ */
0, /* @tp_init@ */
PyType_GenericAlloc, /* @tp_alloc@ */
- 0, /* @tp_new@ */
+ bytestring_pynew, /* @tp_new@ */
0, /* @tp_free@ */
0 /* @tp_is_gc@ */
};
/*----- Initialization ----------------------------------------------------*/
+static PyMethodDef methods[] = {
+#define METHNAME(func) meth_##func
+ METH (ctstreq, "ctstreq(S, T) -> BOOL")
+ METH (_ByteString_zero, "zero(N) -> 0000...00")
+#undef METHNAME
+ { 0 }
+};
+
#define string_pytype &PyString_Type
void bytestring_pyinit(void)
{
INITTYPE(bytestring, string);
+ addmethods(methods);
}
void bytestring_pyinsert(PyObject *mod)