1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
|
/* ------------------------------------------------------------------------
unicodedata -- Provides access to the Unicode 3.0 data base.
Data was extracted from the Unicode 3.0 UnicodeData.txt file.
Written by Marc-Andre Lemburg (mal@lemburg.com).
Modified for Python 2.0 by Fredrik Lundh (fredrik@pythonware.com)
Copyright (c) Corporation for National Research Initiatives.
------------------------------------------------------------------------ */
#include "Python.h"
#include "ucnhash.h"
/* character properties */
typedef struct {
const unsigned char category; /* index into
_PyUnicode_CategoryNames */
const unsigned char combining; /* combining class value 0 - 255 */
const unsigned char bidirectional; /* index into
_PyUnicode_BidirectionalNames */
const unsigned char mirrored; /* true if mirrored in bidir mode */
} _PyUnicode_DatabaseRecord;
/* data file generated by Tools/unicode/makeunicodedata.py */
#include "unicodedata_db.h"
static const _PyUnicode_DatabaseRecord*
_getrecord(PyUnicodeObject* v)
{
int code;
int index;
code = (int) *PyUnicode_AS_UNICODE(v);
if (code < 0 || code >= 65536)
index = 0;
else {
index = index1[(code>>SHIFT)];
index = index2[(index<<SHIFT)+(code&((1<<SHIFT)-1))];
}
return &_PyUnicode_Database_Records[index];
}
/* --- Module API --------------------------------------------------------- */
static PyObject *
unicodedata_decimal(PyObject *self, PyObject *args)
{
PyUnicodeObject *v;
PyObject *defobj = NULL;
long rc;
if (!PyArg_ParseTuple(args, "O!|O:decimal", &PyUnicode_Type, &v, &defobj))
return NULL;
if (PyUnicode_GET_SIZE(v) != 1) {
PyErr_SetString(PyExc_TypeError,
"need a single Unicode character as parameter");
return NULL;
}
rc = Py_UNICODE_TODECIMAL(*PyUnicode_AS_UNICODE(v));
if (rc < 0) {
if (defobj == NULL) {
PyErr_SetString(PyExc_ValueError,
"not a decimal");
return NULL;
}
else {
Py_INCREF(defobj);
return defobj;
}
}
return PyInt_FromLong(rc);
}
static PyObject *
unicodedata_digit(PyObject *self, PyObject *args)
{
PyUnicodeObject *v;
PyObject *defobj = NULL;
long rc;
if (!PyArg_ParseTuple(args, "O!|O:digit", &PyUnicode_Type, &v, &defobj))
return NULL;
if (PyUnicode_GET_SIZE(v) != 1) {
PyErr_SetString(PyExc_TypeError,
"need a single Unicode character as parameter");
return NULL;
}
rc = Py_UNICODE_TODIGIT(*PyUnicode_AS_UNICODE(v));
if (rc < 0) {
if (defobj == NULL) {
PyErr_SetString(PyExc_ValueError, "not a digit");
return NULL;
}
else {
Py_INCREF(defobj);
return defobj;
}
}
return PyInt_FromLong(rc);
}
static PyObject *
unicodedata_numeric(PyObject *self, PyObject *args)
{
PyUnicodeObject *v;
PyObject *defobj = NULL;
double rc;
if (!PyArg_ParseTuple(args, "O!|O:numeric", &PyUnicode_Type, &v, &defobj))
return NULL;
if (PyUnicode_GET_SIZE(v) != 1) {
PyErr_SetString(PyExc_TypeError,
"need a single Unicode character as parameter");
return NULL;
}
rc = Py_UNICODE_TONUMERIC(*PyUnicode_AS_UNICODE(v));
if (rc < 0) {
if (defobj == NULL) {
PyErr_SetString(PyExc_ValueError, "not a numeric character");
return NULL;
}
else {
Py_INCREF(defobj);
return defobj;
}
}
return PyFloat_FromDouble(rc);
}
static PyObject *
unicodedata_category(PyObject *self, PyObject *args)
{
PyUnicodeObject *v;
int index;
if (!PyArg_ParseTuple(args, "O!:category",
&PyUnicode_Type, &v))
return NULL;
if (PyUnicode_GET_SIZE(v) != 1) {
PyErr_SetString(PyExc_TypeError,
"need a single Unicode character as parameter");
return NULL;
}
index = (int) _getrecord(v)->category;
return PyString_FromString(_PyUnicode_CategoryNames[index]);
}
static PyObject *
unicodedata_bidirectional(PyObject *self, PyObject *args)
{
PyUnicodeObject *v;
int index;
if (!PyArg_ParseTuple(args, "O!:bidirectional",
&PyUnicode_Type, &v))
return NULL;
if (PyUnicode_GET_SIZE(v) != 1) {
PyErr_SetString(PyExc_TypeError,
"need a single Unicode character as parameter");
return NULL;
}
index = (int) _getrecord(v)->bidirectional;
return PyString_FromString(_PyUnicode_BidirectionalNames[index]);
}
static PyObject *
unicodedata_combining(PyObject *self, PyObject *args)
{
PyUnicodeObject *v;
if (!PyArg_ParseTuple(args, "O!:combining",
&PyUnicode_Type, &v))
return NULL;
if (PyUnicode_GET_SIZE(v) != 1) {
PyErr_SetString(PyExc_TypeError,
"need a single Unicode character as parameter");
return NULL;
}
return PyInt_FromLong((int) _getrecord(v)->combining);
}
static PyObject *
unicodedata_mirrored(PyObject *self, PyObject *args)
{
PyUnicodeObject *v;
if (!PyArg_ParseTuple(args, "O!:mirrored",
&PyUnicode_Type, &v))
return NULL;
if (PyUnicode_GET_SIZE(v) != 1) {
PyErr_SetString(PyExc_TypeError,
"need a single Unicode character as parameter");
return NULL;
}
return PyInt_FromLong((int) _getrecord(v)->mirrored);
}
static PyObject *
unicodedata_decomposition(PyObject *self, PyObject *args)
{
PyUnicodeObject *v;
char decomp[256];
int code, index, count, i;
if (!PyArg_ParseTuple(args, "O!:decomposition",
&PyUnicode_Type, &v))
return NULL;
if (PyUnicode_GET_SIZE(v) != 1) {
PyErr_SetString(PyExc_TypeError,
"need a single Unicode character as parameter");
return NULL;
}
code = (int) *PyUnicode_AS_UNICODE(v);
if (code < 0 || code >= 65536)
index = 0;
else {
index = decomp_index1[(code>>DECOMP_SHIFT)];
index = decomp_index2[(index<<DECOMP_SHIFT)+
(code&((1<<DECOMP_SHIFT)-1))];
}
/* high byte is number of hex bytes (usually one or two), low byte
is prefix code (from*/
count = decomp_data[index] >> 8;
/* XXX: could allocate the PyString up front instead
(strlen(prefix) + 5 * count + 1 bytes) */
/* copy prefix */
i = strlen(decomp_prefix[decomp_data[index] & 255]);
memcpy(decomp, decomp_prefix[decomp_data[index] & 255], i);
while (count-- > 0) {
if (i)
decomp[i++] = ' ';
assert((size_t)i < sizeof(decomp));
PyOS_snprintf(decomp + i, sizeof(decomp) - i, "%04X",
decomp_data[++index]);
i += strlen(decomp + i);
}
decomp[i] = '\0';
return PyString_FromString(decomp);
}
/* -------------------------------------------------------------------- */
/* unicode character name tables */
/* data file generated by Tools/unicode/makeunicodedata.py */
#include "unicodename_db.h"
/* -------------------------------------------------------------------- */
/* database code (cut and pasted from the unidb package) */
static unsigned long
_gethash(const char *s, int len, int scale)
{
int i;
unsigned long h = 0;
unsigned long ix;
for (i = 0; i < len; i++) {
h = (h * scale) + (unsigned char) toupper(s[i]);
ix = h & 0xff000000;
if (ix)
h = (h ^ ((ix>>24) & 0xff)) & 0x00ffffff;
}
return h;
}
static int
_getucname(Py_UCS4 code, char* buffer, int buflen)
{
int offset;
int i;
int word;
unsigned char* w;
if (code >= 65536)
return 0;
/* get offset into phrasebook */
offset = phrasebook_offset1[(code>>phrasebook_shift)];
offset = phrasebook_offset2[(offset<<phrasebook_shift) +
(code&((1<<phrasebook_shift)-1))];
if (!offset)
return 0;
i = 0;
for (;;) {
/* get word index */
word = phrasebook[offset] - phrasebook_short;
if (word >= 0) {
word = (word << 8) + phrasebook[offset+1];
offset += 2;
} else
word = phrasebook[offset++];
if (i) {
if (i > buflen)
return 0; /* buffer overflow */
buffer[i++] = ' ';
}
/* copy word string from lexicon. the last character in the
word has bit 7 set. the last word in a string ends with
0x80 */
w = lexicon + lexicon_offset[word];
while (*w < 128) {
if (i >= buflen)
return 0; /* buffer overflow */
buffer[i++] = *w++;
}
if (i >= buflen)
return 0; /* buffer overflow */
buffer[i++] = *w & 127;
if (*w == 128)
break; /* end of word */
}
return 1;
}
static int
_cmpname(int code, const char* name, int namelen)
{
/* check if code corresponds to the given name */
int i;
char buffer[NAME_MAXLEN];
if (!_getucname(code, buffer, sizeof(buffer)))
return 0;
for (i = 0; i < namelen; i++) {
if (toupper(name[i]) != buffer[i])
return 0;
}
return buffer[namelen] == '\0';
}
static int
_getcode(const char* name, int namelen, Py_UCS4* code)
{
unsigned int h, v;
unsigned int mask = code_size-1;
unsigned int i, incr;
/* the following is the same as python's dictionary lookup, with
only minor changes. see the makeunicodedata script for more
details */
h = (unsigned int) _gethash(name, namelen, code_magic);
i = (~h) & mask;
v = code_hash[i];
if (!v)
return 0;
if (_cmpname(v, name, namelen)) {
*code = v;
return 1;
}
incr = (h ^ (h >> 3)) & mask;
if (!incr)
incr = mask;
for (;;) {
i = (i + incr) & mask;
v = code_hash[i];
if (!v)
return 0;
if (_cmpname(v, name, namelen)) {
*code = v;
return 1;
}
incr = incr << 1;
if (incr > mask)
incr = incr ^ code_poly;
}
}
static const _PyUnicode_Name_CAPI hashAPI =
{
sizeof(_PyUnicode_Name_CAPI),
_getucname,
_getcode
};
/* -------------------------------------------------------------------- */
/* Python bindings */
static PyObject *
unicodedata_name(PyObject* self, PyObject* args)
{
char name[NAME_MAXLEN];
PyUnicodeObject* v;
PyObject* defobj = NULL;
if (!PyArg_ParseTuple(args, "O!|O:name", &PyUnicode_Type, &v, &defobj))
return NULL;
if (PyUnicode_GET_SIZE(v) != 1) {
PyErr_SetString(PyExc_TypeError,
"need a single Unicode character as parameter");
return NULL;
}
if (!_getucname((Py_UCS4) *PyUnicode_AS_UNICODE(v),
name, sizeof(name))) {
if (defobj == NULL) {
PyErr_SetString(PyExc_ValueError, "no such name");
return NULL;
}
else {
Py_INCREF(defobj);
return defobj;
}
}
return Py_BuildValue("s", name);
}
static PyObject *
unicodedata_lookup(PyObject* self, PyObject* args)
{
Py_UCS4 code;
Py_UNICODE str[1];
char* name;
int namelen;
if (!PyArg_ParseTuple(args, "s#:lookup", &name, &namelen))
return NULL;
if (!_getcode(name, namelen, &code)) {
PyErr_SetString(PyExc_KeyError, "undefined character name");
return NULL;
}
str[0] = (Py_UNICODE) code;
return PyUnicode_FromUnicode(str, 1);
}
/* XXX Add doc strings. */
static PyMethodDef unicodedata_functions[] = {
{"decimal", unicodedata_decimal, METH_VARARGS},
{"digit", unicodedata_digit, METH_VARARGS},
{"numeric", unicodedata_numeric, METH_VARARGS},
{"category", unicodedata_category, METH_VARARGS},
{"bidirectional", unicodedata_bidirectional, METH_VARARGS},
{"combining", unicodedata_combining, METH_VARARGS},
{"mirrored", unicodedata_mirrored, METH_VARARGS},
{"decomposition",unicodedata_decomposition, METH_VARARGS},
{"name", unicodedata_name, METH_VARARGS},
{"lookup", unicodedata_lookup, METH_VARARGS},
{NULL, NULL} /* sentinel */
};
static char *unicodedata_docstring = "unicode character database";
DL_EXPORT(void)
initunicodedata(void)
{
PyObject *m, *v;
m = Py_InitModule3(
"unicodedata", unicodedata_functions, unicodedata_docstring);
if (!m)
return;
/* Export C API */
v = PyCObject_FromVoidPtr((void *) &hashAPI, NULL);
if (v != NULL)
PyModule_AddObject(m, "ucnhash_CAPI", v);
}
|