Commit | Line | Data |
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5b1830f3 MW |
1 | ### -*-pyrex-*- |
2 | ### | |
3 | ### Universal hashing interface | |
4 | ### | |
5 | ### (c) 2005 Straylight/Edgeware | |
6 | ### | |
20bce5e9 | 7 | |
5b1830f3 MW |
8 | ###----- Licensing notice --------------------------------------------------- |
9 | ### | |
10 | ### This file is part of the Python interface to mLib. | |
11 | ### | |
12 | ### mLib/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. | |
16 | ### | |
17 | ### mLib/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. | |
21 | ### | |
22 | ### You should have received a copy of the GNU General Public License | |
23 | ### along with mLib/Python; if not, write to the Free Software Foundation, | |
24 | ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20bce5e9 | 25 | |
20bce5e9 | 26 | def setglobalkey(uint32 k): |
27 | unihash_setkey(&unihash_global, k) | |
28 | ||
29 | cdef class Key: | |
30 | cdef unihash_info _i | |
31 | cdef uint32 _k | |
376ad06d | 32 | def __cinit__(me, uint32 k): |
20bce5e9 | 33 | unihash_setkey(&me._i, k) |
34 | me._k = k | |
35 | property k: | |
36 | def __get__(me): | |
37 | return _u32(me._k) | |
38 | ||
39 | cdef class Unihash: | |
40 | cdef uint32 _a | |
41 | cdef readonly Key key | |
42 | cdef unihash_info *_i | |
376ad06d | 43 | def __cinit__(me, key = None): |
20bce5e9 | 44 | cdef Key k |
45 | me.key = key | |
46 | if key is None: | |
47 | me._i = &unihash_global | |
48 | else: | |
49 | k = key | |
50 | me._i = &k._i | |
51 | me._a = UNIHASH_INIT(me._i) | |
52 | def chunk(me, data): | |
53 | cdef void *p | |
54 | cdef int n | |
55 | PyObject_AsReadBuffer(data, &p, &n) | |
56 | me._a = unihash_hash(me._i, me._a, p, n) | |
57 | def done(me): | |
58 | return _u32(me._a) | |
59 | ||
5b1830f3 | 60 | ###----- That's all, folks -------------------------------------------------- |