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
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
|
/* $FreeBSD$ */
/* $NetBSD: citrus_viqr.c,v 1.4 2008/06/14 16:01:08 tnozaki Exp $ */
/*-
* Copyright (c)2006 Citrus Project,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include "citrus_namespace.h"
#include "citrus_types.h"
#include "citrus_bcs.h"
#include "citrus_module.h"
#include "citrus_stdenc.h"
#include "citrus_viqr.h"
#define ESCAPE '\\'
/*
* this table generated from RFC 1456.
*/
static const char *mnemonic_rfc1456[0x100] = {
NULL , NULL , "A(?", NULL , NULL , "A(~", "A^~", NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , "Y?" , NULL , NULL , NULL ,
NULL , "Y~" , NULL , NULL , NULL , NULL , "Y." , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
NULL , NULL , NULL , NULL , NULL , NULL , NULL , NULL ,
"A." , "A('", "A(`", "A(.", "A^'", "A^`", "A^?", "A^.",
"E~" , "E." , "E^'", "E^`", "E^?", "E^~", "E^.", "O^'",
"O^`", "O^?", "O^~", "O^.", "O+.", "O+'", "O+`", "O+?",
"I." , "O?" , "O." , "I?" , "U?" , "U~" , "U." , "Y`" ,
"O~" , "a('", "a(`", "a(.", "a^'", "a^`", "a^?", "a^.",
"e~" , "e." , "e^'", "e^`", "e^?", "e^~", "e^.", "o^'",
"o^`", "o^?", "o^~", "O+~", "O+" , "o^.", "o+`", "o+?",
"i." , "U+.", "U+'", "U+`", "U+?", "o+" , "o+'", "U+" ,
"A`" , "A'" , "A^" , "A~" , "A?" , "A(" , "a(?", "a(~",
"E`" , "E'" , "E^" , "E?" , "I`" , "I'" , "I~" , "y`" ,
"DD" , "u+'", "O`" , "O'" , "O^" , "a." , "y?" , "u+`",
"u+?", "U`" , "U'" , "y~" , "y." , "Y'" , "o+~", "u+" ,
"a`" , "a'" , "a^" , "a~" , "a?" , "a(" , "u+~", "a^~",
"e`" , "e'" , "e^" , "e?" , "i`" , "i'" , "i~" , "i?" ,
"dd" , "u+.", "o`" , "o'" , "o^" , "o~" , "o?" , "o." ,
"u." , "u`" , "u'" , "u~" , "u?" , "y'" , "o+.", "U+~",
};
typedef struct {
const char *name;
wchar_t value;
} mnemonic_def_t;
static const mnemonic_def_t mnemonic_ext[] = {
/* add extra mnemonic here (should be sorted by wchar_t order). */
};
static const size_t mnemonic_ext_size =
sizeof(mnemonic_ext) / sizeof(mnemonic_def_t);
static const char *
mnemonic_ext_find(wchar_t wc, const mnemonic_def_t *head, size_t n)
{
const mnemonic_def_t *mid;
for (; n > 0; n >>= 1) {
mid = head + (n >> 1);
if (mid->value == wc)
return (mid->name);
else if (mid->value < wc) {
head = mid + 1;
--n;
}
}
return (NULL);
}
struct mnemonic_t;
typedef TAILQ_HEAD(mnemonic_list_t, mnemonic_t) mnemonic_list_t;
typedef struct mnemonic_t {
TAILQ_ENTRY(mnemonic_t) entry;
struct mnemonic_t *parent;
mnemonic_list_t child;
wchar_t value;
int ascii;
} mnemonic_t;
static mnemonic_t *
mnemonic_list_find(mnemonic_list_t *ml, int ch)
{
mnemonic_t *m;
TAILQ_FOREACH(m, ml, entry) {
if (m->ascii == ch)
return (m);
}
return (NULL);
}
static mnemonic_t *
mnemonic_create(mnemonic_t *parent, int ascii, wchar_t value)
{
mnemonic_t *m;
m = malloc(sizeof(*m));
if (m != NULL) {
m->parent = parent;
m->ascii = ascii;
m->value = value;
TAILQ_INIT(&m->child);
}
return (m);
}
static int
mnemonic_append_child(mnemonic_t *m, const char *s,
wchar_t value, wchar_t invalid)
{
mnemonic_t *m0;
int ch;
ch = (unsigned char)*s++;
if (ch == '\0')
return (EINVAL);
m0 = mnemonic_list_find(&m->child, ch);
if (m0 == NULL) {
m0 = mnemonic_create(m, ch, (wchar_t)ch);
if (m0 == NULL)
return (ENOMEM);
TAILQ_INSERT_TAIL(&m->child, m0, entry);
}
m = m0;
for (m0 = NULL; (ch = (unsigned char)*s) != '\0'; ++s) {
m0 = mnemonic_list_find(&m->child, ch);
if (m0 == NULL) {
m0 = mnemonic_create(m, ch, invalid);
if (m0 == NULL)
return (ENOMEM);
TAILQ_INSERT_TAIL(&m->child, m0, entry);
}
m = m0;
}
if (m0 == NULL)
return (EINVAL);
m0->value = value;
return (0);
}
static void
mnemonic_destroy(mnemonic_t *m)
{
mnemonic_t *m0;
TAILQ_FOREACH(m0, &m->child, entry)
mnemonic_destroy(m0);
free(m);
}
typedef struct {
mnemonic_t *mroot;
wchar_t invalid;
size_t mb_cur_max;
} _VIQREncodingInfo;
typedef struct {
int chlen;
char ch[MB_LEN_MAX];
} _VIQRState;
#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
#define _FUNCNAME(m) _citrus_VIQR_##m
#define _ENCODING_INFO _VIQREncodingInfo
#define _ENCODING_STATE _VIQRState
#define _ENCODING_MB_CUR_MAX(_ei_) (_ei_)->mb_cur_max
#define _ENCODING_IS_STATE_DEPENDENT 1
#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
static __inline void
/*ARGSUSED*/
_citrus_VIQR_init_state(_VIQREncodingInfo * __restrict ei __unused,
_VIQRState * __restrict psenc)
{
psenc->chlen = 0;
}
static __inline void
/*ARGSUSED*/
_citrus_VIQR_pack_state(_VIQREncodingInfo * __restrict ei __unused,
void *__restrict pspriv, const _VIQRState * __restrict psenc)
{
memcpy(pspriv, (const void *)psenc, sizeof(*psenc));
}
static __inline void
/*ARGSUSED*/
_citrus_VIQR_unpack_state(_VIQREncodingInfo * __restrict ei __unused,
_VIQRState * __restrict psenc, const void * __restrict pspriv)
{
memcpy((void *)psenc, pspriv, sizeof(*psenc));
}
static int
_citrus_VIQR_mbrtowc_priv(_VIQREncodingInfo * __restrict ei,
wchar_t * __restrict pwc, char ** __restrict s, size_t n,
_VIQRState * __restrict psenc, size_t * __restrict nresult)
{
mnemonic_t *m, *m0;
char *s0;
wchar_t wc;
ssize_t i;
int ch, escape;
if (*s == NULL) {
_citrus_VIQR_init_state(ei, psenc);
*nresult = (size_t)_ENCODING_IS_STATE_DEPENDENT;
return (0);
}
s0 = *s;
i = 0;
m = ei->mroot;
for (escape = 0;;) {
if (psenc->chlen == i) {
if (n-- < 1) {
*s = s0;
*nresult = (size_t)-2;
return (0);
}
psenc->ch[psenc->chlen++] = *s0++;
}
ch = (unsigned char)psenc->ch[i++];
if (ch == ESCAPE) {
if (m != ei->mroot)
break;
escape = 1;
continue;
}
if (escape != 0)
break;
m0 = mnemonic_list_find(&m->child, ch);
if (m0 == NULL)
break;
m = m0;
}
while (m != ei->mroot) {
--i;
if (m->value != ei->invalid)
break;
m = m->parent;
}
if (ch == ESCAPE && m != ei->mroot)
++i;
psenc->chlen -= i;
memmove(&psenc->ch[0], &psenc->ch[i], psenc->chlen);
wc = (m == ei->mroot) ? (wchar_t)ch : m->value;
if (pwc != NULL)
*pwc = wc;
*nresult = (size_t)(wc == 0 ? 0 : s0 - *s);
*s = s0;
return (0);
}
static int
_citrus_VIQR_wcrtomb_priv(_VIQREncodingInfo * __restrict ei,
char * __restrict s, size_t n, wchar_t wc,
_VIQRState * __restrict psenc, size_t * __restrict nresult)
{
mnemonic_t *m;
const char *p;
int ch = 0;
switch (psenc->chlen) {
case 0: case 1:
break;
default:
return (EINVAL);
}
m = NULL;
if ((uint32_t)wc <= 0xFF) {
p = mnemonic_rfc1456[wc & 0xFF];
if (p != NULL)
goto mnemonic_found;
if (n-- < 1)
goto e2big;
ch = (unsigned int)wc;
m = ei->mroot;
if (psenc->chlen > 0) {
m = mnemonic_list_find(&m->child, psenc->ch[0]);
if (m == NULL)
return (EINVAL);
psenc->ch[0] = ESCAPE;
}
if (mnemonic_list_find(&m->child, ch) == NULL) {
psenc->chlen = 0;
m = NULL;
}
psenc->ch[psenc->chlen++] = ch;
} else {
p = mnemonic_ext_find(wc, &mnemonic_ext[0], mnemonic_ext_size);
if (p == NULL) {
*nresult = (size_t)-1;
return (EILSEQ);
} else {
mnemonic_found:
psenc->chlen = 0;
while (*p != '\0') {
if (n-- < 1)
goto e2big;
psenc->ch[psenc->chlen++] = *p++;
}
}
}
memcpy(s, psenc->ch, psenc->chlen);
*nresult = psenc->chlen;
if (m == ei->mroot) {
psenc->ch[0] = ch;
psenc->chlen = 1;
} else
psenc->chlen = 0;
return (0);
e2big:
*nresult = (size_t)-1;
return (E2BIG);
}
static int
/* ARGSUSED */
_citrus_VIQR_put_state_reset(_VIQREncodingInfo * __restrict ei __unused,
char * __restrict s __unused, size_t n __unused,
_VIQRState * __restrict psenc, size_t * __restrict nresult)
{
switch (psenc->chlen) {
case 0: case 1:
break;
default:
return (EINVAL);
}
*nresult = 0;
psenc->chlen = 0;
return (0);
}
static __inline int
/*ARGSUSED*/
_citrus_VIQR_stdenc_wctocs(_VIQREncodingInfo * __restrict ei __unused,
_csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
{
*csid = 0;
*idx = (_index_t)wc;
return (0);
}
static __inline int
/*ARGSUSED*/
_citrus_VIQR_stdenc_cstowc(_VIQREncodingInfo * __restrict ei __unused,
wchar_t * __restrict pwc, _csid_t csid, _index_t idx)
{
if (csid != 0)
return (EILSEQ);
*pwc = (wchar_t)idx;
return (0);
}
static void
_citrus_VIQR_encoding_module_uninit(_VIQREncodingInfo *ei)
{
mnemonic_destroy(ei->mroot);
}
static int
/*ARGSUSED*/
_citrus_VIQR_encoding_module_init(_VIQREncodingInfo * __restrict ei,
const void * __restrict var __unused, size_t lenvar __unused)
{
const mnemonic_def_t *p;
const char *s;
size_t i, n;
int errnum;
ei->mb_cur_max = 1;
ei->invalid = (wchar_t)-1;
ei->mroot = mnemonic_create(NULL, '\0', ei->invalid);
if (ei->mroot == NULL)
return (ENOMEM);
for (i = 0; i < sizeof(mnemonic_rfc1456) / sizeof(const char *); ++i) {
s = mnemonic_rfc1456[i];
if (s == NULL)
continue;
n = strlen(s);
if (ei->mb_cur_max < n)
ei->mb_cur_max = n;
errnum = mnemonic_append_child(ei->mroot,
s, (wchar_t)i, ei->invalid);
if (errnum != 0) {
_citrus_VIQR_encoding_module_uninit(ei);
return (errnum);
}
}
for (i = 0;; ++i) {
p = &mnemonic_ext[i];
n = strlen(p->name);
if (ei->mb_cur_max < n)
ei->mb_cur_max = n;
errnum = mnemonic_append_child(ei->mroot,
p->name, p->value, ei->invalid);
if (errnum != 0) {
_citrus_VIQR_encoding_module_uninit(ei);
return (errnum);
}
}
return (0);
}
static __inline int
/*ARGSUSED*/
_citrus_VIQR_stdenc_get_state_desc_generic(_VIQREncodingInfo * __restrict ei __unused,
_VIQRState * __restrict psenc, int * __restrict rstate)
{
*rstate = (psenc->chlen == 0) ?
_STDENC_SDGEN_INITIAL :
_STDENC_SDGEN_INCOMPLETE_CHAR;
return (0);
}
/* ----------------------------------------------------------------------
* public interface for stdenc
*/
_CITRUS_STDENC_DECLS(VIQR);
_CITRUS_STDENC_DEF_OPS(VIQR);
#include "citrus_stdenc_template.h"
|