5 * (c) 2004 Straylight/Edgeware
8 /*----- Licensing notice --------------------------------------------------*
10 * This file is part of the Python interface to Catacomb.
12 * Catacomb/Python is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * Catacomb/Python is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with Catacomb/Python; if not, write to the Free Software Foundation,
24 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 /*----- Header files ------------------------------------------------------*/
29 #include "catacomb-python.h"
31 /*----- Main code ---------------------------------------------------------*/
33 static PyTypeObject
*bytestring_pytype
;
35 static PyObject
*empty
, *bytev
[256];
37 static PyObject
*allocate(PyTypeObject
*ty
, size_t n
)
40 x
= (PyStringObject
*)ty
->tp_alloc(ty
, n
);
42 #if defined(CACHE_HASH) || PY_VERSION_HEX >= 0x02030000
45 x
->ob_sstate
= SSTATE_NOT_INTERNED
;
46 return ((PyObject
*)x
);
49 static PyObject
*dowrap(PyTypeObject
*ty
, const void *p
, size_t n
)
54 if (p
&& ty
== bytestring_pytype
) {
56 if (!empty
) empty
= allocate(ty
, 0);
57 Py_INCREF(empty
); return (empty
);
58 } else if (n
== 1 && (ch
= *(unsigned char *)p
) < sizeof(bytev
)) {
60 { bytev
[ch
] = allocate(ty
, 1); *PyString_AS_STRING(bytev
[ch
]) = ch
; }
61 Py_INCREF(bytev
[ch
]); return (bytev
[ch
]);
66 if (p
) memcpy(PyString_AS_STRING(x
), p
, n
);
70 PyObject
*bytestring_pywrap(const void *p
, size_t n
)
71 { return (dowrap(bytestring_pytype
, p
, n
)); }
73 PyObject
*bytestring_pywrapbuf(buf
*b
)
74 { return (dowrap(bytestring_pytype
, BCUR(b
), BLEFT(b
))); }
76 static PyObject
*bytestring_pynew(PyTypeObject
*ty
,
77 PyObject
*arg
, PyObject
*kw
)
81 static const char *const kwlist
[] = { "data", 0 };
82 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &p
, &n
))
84 return (dowrap(ty
, p
, n
));
87 static PyObject
*meth_ctstreq(PyObject
*me
, PyObject
*arg
)
91 if (!PyArg_ParseTuple(arg
, "s#s#:ctstreq", &p
, &psz
, &q
, &qsz
))
93 if (psz
== qsz
&& ct_memeq(p
, q
, psz
)) RETURN_TRUE
;
99 static PyObject
*bymeth_zero(PyObject
*me
, PyObject
*arg
)
103 if (!PyArg_ParseTuple(arg
, "O&:zero", convszt
, &sz
)) goto end
;
104 rc
= bytestring_pywrap(0, sz
);
105 memset(PyString_AS_STRING(rc
), 0, sz
);
110 static PyObject
*bytestring_pyrichcompare(PyObject
*me
,
111 PyObject
*you
, int op
)
114 void *mystr
, *yourstr
;
115 Py_ssize_t mylen
, yourlen
, minlen
;
117 if (!PyString_Check(me
) || !PyString_Check(you
)) RETURN_NOTIMPL
;
118 mystr
= PyString_AS_STRING(me
); mylen
= PyString_GET_SIZE(me
);
119 yourstr
= PyString_AS_STRING(you
); yourlen
= PyString_GET_SIZE(you
);
123 b
= mylen
== yourlen
&& ct_memeq(mystr
, yourstr
, mylen
);
126 b
= mylen
!= yourlen
|| !ct_memeq(mystr
, yourstr
, mylen
);
129 minlen
= mylen
< yourlen ? mylen
: yourlen
;
130 b
= memcmp(mystr
, yourstr
, minlen
);
131 if (!b
) b
= mylen
< yourlen ?
-1 : mylen
> yourlen ?
+1 : 0;
133 case Py_LT
: b
= b
< 0; break;
134 case Py_LE
: b
= b
<= 0; break;
135 case Py_GE
: b
= b
>= 0; break;
136 case Py_GT
: b
= b
> 0; break;
144 static PyObject
*bytestring_pyconcat(PyObject
*x
, PyObject
*y
)
146 const void *xv
; Py_ssize_t xsz
;
147 const void *yv
; Py_ssize_t ysz
;
148 PyObject
*z
= 0; char *zp
; size_t zsz
;
150 if (PyObject_AsReadBuffer(x
, &xv
, &xsz
) ||
151 PyObject_AsReadBuffer(y
, &yv
, &ysz
))
153 zsz
= (size_t)xsz
+ (size_t)ysz
;
154 if (xsz
< 0 || ysz
< 0 || zsz
< xsz
) VALERR("too long");
155 z
= bytestring_pywrap(0, zsz
); zp
= PyString_AS_STRING(z
);
156 memcpy(zp
, xv
, xsz
); memcpy(zp
+ xsz
, yv
, ysz
);
161 static PyObject
*bytestring_pyrepeat(PyObject
*me
, Py_ssize_t n
)
163 const unsigned char *xp
; size_t xsz
;
164 PyObject
*z
= 0; char *zp
; size_t zsz
;
166 xp
= (const unsigned char *)PyString_AS_STRING(me
);
167 xsz
= PyString_GET_SIZE(me
);
168 if (n
< 0 || (n
&& xsz
>= (size_t)-1/n
)) VALERR("too long");
169 zsz
= n
*xsz
; z
= bytestring_pywrap(0, zsz
); zp
= PyString_AS_STRING(z
);
170 if (xsz
== 1) memset(zp
, *xp
, zsz
);
171 else while (zsz
) { memcpy(zp
, xp
, xsz
); zp
+= xsz
; zsz
-= xsz
; }
176 static PyObject
*bytestring_pyitem(PyObject
*me
, Py_ssize_t i
)
180 if (i
< 0 || i
>= PyString_GET_SIZE(me
)) IXERR("out of range");
181 rc
= bytestring_pywrap(PyString_AS_STRING(me
) + i
, 1);
186 static PyObject
*bytestring_pyslice(PyObject
*me
, Py_ssize_t i
, Py_ssize_t j
)
189 size_t n
= PyString_GET_SIZE(me
);
193 else if (j
> n
) j
= n
;
194 if (j
< i
) i
= j
= 0;
195 if (i
== 0 && j
== n
&& me
->ob_type
== bytestring_pytype
)
196 { Py_INCREF(me
); rc
= me
; goto end
; }
197 rc
= bytestring_pywrap(PyString_AS_STRING(me
) + i
, j
- i
);
202 static PyObject
*bytestring_pysubscript(PyObject
*me
, PyObject
*ix
)
204 Py_ssize_t i
, j
, k
, n
;
205 const unsigned char *p
;
209 if (PyIndex_Check(ix
)) {
210 i
= PyNumber_AsSsize_t(ix
, PyExc_IndexError
);
211 if (i
== -1 && PyErr_Occurred()) return (0);
212 if (i
< 0) i
+= PyString_GET_SIZE(me
);
213 rc
= bytestring_pyitem(me
, i
);
214 } else if (PySlice_Check(ix
)) {
215 if (PySlice_GetIndicesEx((PySliceObject
*)ix
, PyString_GET_SIZE(me
),
218 if (k
== 1) return bytestring_pyslice(me
, i
, j
);
219 rc
= bytestring_pywrap(0, n
);
220 p
= (unsigned char *)PyString_AS_STRING(me
) + i
;
221 q
= (unsigned char *)PyString_AS_STRING(rc
);
222 while (n
--) { *q
++ = *p
; p
+= k
; }
224 TYERR("wanted integer or slice");
229 #define BINOP(name, op) \
230 static PyObject *bytestring_py##name(PyObject *x, PyObject *y) { \
231 const void *xv, *yv; \
232 const unsigned char *xp, *yp; \
234 Py_ssize_t xsz, ysz; \
237 if (PyObject_AsReadBuffer(x, &xv, &xsz) || \
238 PyObject_AsReadBuffer(y, &yv, &ysz)) \
240 if (xsz != ysz) VALERR("length mismatch"); \
241 rc = bytestring_pywrap(0, xsz); \
242 xp = xv; yp = yv; zp = (unsigned char *)PyString_AS_STRING(rc); \
243 for (i = xsz; i > 0; i--) *zp++ = *xp++ op *yp++; \
251 #define UNOP(name, op) \
252 static PyObject *bytestring_py##name(PyObject *x) { \
254 const unsigned char *xp; \
259 if (PyObject_AsReadBuffer(x, &xv, &xsz)) goto end; \
260 rc = bytestring_pywrap(0, xsz); \
261 xp = xv; zp = (unsigned char *)PyString_AS_STRING(rc); \
262 for (i = xsz; i > 0; i--) *zp++ = op *xp++; \
268 static const PyMethodDef bytestring_pymethods
[] = {
269 #define METHNAME(name) bymeth_##name
270 SMTH (zero
, "zero(N) -> 0000...00")
275 static const PyNumberMethods bytestring_pynumber
= {
277 0, /* @nb_subtract@ */
278 0, /* @nb_multiply@ */
280 0, /* @nb_remainder@ */
283 0, /* @nb_negative@ */
284 0, /* @nb_positive@ */
285 0, /* @nb_absolute@ */
286 0, /* @nb_nonzero@ */
287 bytestring_pynot
, /* @nb_invert@ */
290 bytestring_pyand
, /* @nb_and@ */
291 bytestring_pyxor
, /* @nb_xor@ */
292 bytestring_pyor
, /* @nb_or@ */
301 static const PySequenceMethods bytestring_pysequence
= {
303 bytestring_pyconcat
, /* @sq_concat@ */
304 bytestring_pyrepeat
, /* @sq_repeat@ */
305 bytestring_pyitem
, /* @sq_item@ */
306 bytestring_pyslice
, /* @sq_slice@ */
307 0, /* @sq_ass_item@ */
308 0, /* @sq_ass_slice@ */
309 0, /* @sq_contains@ */
310 0, /* @sq_inplace_concat@ */
311 0, /* @sq_inplace_repeat@ */
314 static const PyMappingMethods bytestring_pymapping
= {
316 bytestring_pysubscript
, /* @mp_subscript@ */
317 0, /* @mp_ass_subscript@ */
320 static PyTypeObject bytestring_pytype_skel
= {
321 PyObject_HEAD_INIT(0) 0, /* Header */
322 "ByteString", /* @tp_name@ */
323 0, /* @tp_basicsize@ */
324 0, /* @tp_itemsize@ */
326 0, /* @tp_dealloc@ */
328 0, /* @tp_getattr@ */
329 0, /* @tp_setattr@ */
330 0, /* @tp_compare@ */
332 PYNUMBER(bytestring
), /* @tp_as_number@ */
333 PYSEQUENCE(bytestring
), /* @tp_as_sequence@ */
334 PYMAPPING(bytestring
), /* @tp_as_mapping@ */
338 0, /* @tp_getattro@ */
339 0, /* @tp_setattro@ */
340 0, /* @tp_as_buffer@ */
341 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
342 Py_TPFLAGS_CHECKTYPES
|
346 "ByteString(STR): byte string class.",
348 0, /* @tp_traverse@ */
350 bytestring_pyrichcompare
, /* @tp_richcompare@ */
351 0, /* @tp_weaklistoffset@ */
353 0, /* @tp_iternext@ */
354 PYMETHODS(bytestring
), /* @tp_methods@ */
355 0, /* @tp_members@ */
359 0, /* @tp_descr_get@ */
360 0, /* @tp_descr_set@ */
361 0, /* @tp_dictoffset@ */
363 PyType_GenericAlloc
, /* @tp_alloc@ */
364 bytestring_pynew
, /* @tp_new@ */
369 /*----- Initialization ----------------------------------------------------*/
371 static const PyMethodDef methods
[] = {
372 #define METHNAME(func) meth_##func
373 METH (ctstreq
, "ctstreq(S, T) -> BOOL")
378 #define string_pytype &PyString_Type
379 void bytestring_pyinit(void)
381 INITTYPE(bytestring
, string
);
385 void bytestring_pyinsert(PyObject
*mod
)
387 INSERT("ByteString", bytestring_pytype
);
390 /*----- That's all, folks -------------------------------------------------*/