2/* $NetBSD: citrus_big5.c,v 1.13 2011/05/23 14:53:46 joerg Exp $ */
3
4/*-
5 * Copyright (c)2002, 2006 Citrus Project,
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30/*-
31 * Copyright (c) 1993
32 * The Regents of the University of California. All rights reserved.
33 *
34 * This code is derived from software contributed to Berkeley by
35 * Paul Borman at Krystal Technologies.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 */
61
62#include <sys/cdefs.h>
63#include <sys/queue.h>
64#include <sys/types.h>
65
66#include <assert.h>
67#include <errno.h>
68#include <limits.h>
69#include <stddef.h>
70#include <stdint.h>
71#include <stdio.h>
72#include <stdlib.h>
73#include <string.h>
74#include <wchar.h>
75
76#include "citrus_namespace.h"
77#include "citrus_prop.h"
78#include "citrus_types.h"
79#include "citrus_bcs.h"
80#include "citrus_module.h"
81#include "citrus_stdenc.h"
82#include "citrus_big5.h"
83
84/* ----------------------------------------------------------------------
85 * private stuffs used by templates
86 */
87
88typedef struct {
89 int chlen;
90 char ch[2];
91} _BIG5State;
92
93typedef struct _BIG5Exclude {
94 TAILQ_ENTRY(_BIG5Exclude) entry;
95 wint_t start;
96 wint_t end;
97} _BIG5Exclude;
98
99typedef TAILQ_HEAD(_BIG5ExcludeList, _BIG5Exclude) _BIG5ExcludeList;
100
101typedef struct {
102 _BIG5ExcludeList excludes;
103 int cell[0x100];
104} _BIG5EncodingInfo;
105
106#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
107#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
108
109#define _FUNCNAME(m) _citrus_BIG5_##m
110#define _ENCODING_INFO _BIG5EncodingInfo
111#define _ENCODING_STATE _BIG5State
112#define _ENCODING_MB_CUR_MAX(_ei_) 2
113#define _ENCODING_IS_STATE_DEPENDENT 0
114#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
115
116
117static __inline void
118/*ARGSUSED*/
119_citrus_BIG5_init_state(_BIG5EncodingInfo * __restrict ei __unused,
120 _BIG5State * __restrict s)
121{
122
123 memset(s, 0, sizeof(*s));
124}
125
126#if 0
127static __inline void
128/*ARGSUSED*/
129_citrus_BIG5_pack_state(_BIG5EncodingInfo * __restrict ei __unused,
130 void * __restrict pspriv,
131 const _BIG5State * __restrict s)
132{
133
134 memcpy(pspriv, (const void *)s, sizeof(*s));
135}
136
137static __inline void
138/*ARGSUSED*/
139_citrus_BIG5_unpack_state(_BIG5EncodingInfo * __restrict ei __unused,
140 _BIG5State * __restrict s,
141 const void * __restrict pspriv)
142{
143
144 memcpy((void *)s, pspriv, sizeof(*s));
145}
146#endif
147
148static __inline int
149_citrus_BIG5_check(_BIG5EncodingInfo *ei, unsigned int c)
150{
151
152 return ((ei->cell[c & 0xFF] & 0x1) ? 2 : 1);
153}
154
155static __inline int
156_citrus_BIG5_check2(_BIG5EncodingInfo *ei, unsigned int c)
157{
158
159 return ((ei->cell[c & 0xFF] & 0x2) ? 1 : 0);
160}
161
162static __inline int
163_citrus_BIG5_check_excludes(_BIG5EncodingInfo *ei, wint_t c)
164{
165 _BIG5Exclude *exclude;
166
167 TAILQ_FOREACH(exclude, &ei->excludes, entry) {
168 if (c >= exclude->start && c <= exclude->end)
169 return (EILSEQ);
170 }
171 return (0);
172}
173
174static int
175_citrus_BIG5_fill_rowcol(void * __restrict ctx, const char * __restrict s,
176 uint64_t start, uint64_t end)
177{
178 _BIG5EncodingInfo *ei;
179 uint64_t n;
180 int i;
181
182 if (start > 0xFF || end > 0xFF)
183 return (EINVAL);
184 ei = (_BIG5EncodingInfo *)ctx;
185 i = strcmp("row", s) ? 1 : 0;
186 i = 1 << i;
187 for (n = start; n <= end; ++n)
188 ei->cell[n & 0xFF] |= i;
189 return (0);
190}
191
192static int
193/*ARGSUSED*/
194_citrus_BIG5_fill_excludes(void * __restrict ctx,
195 const char * __restrict s __unused, uint64_t start, uint64_t end)
196{
197 _BIG5EncodingInfo *ei;
198 _BIG5Exclude *exclude;
199
200 if (start > 0xFFFF || end > 0xFFFF)
201 return (EINVAL);
202 ei = (_BIG5EncodingInfo *)ctx;
203 exclude = TAILQ_LAST(&ei->excludes, _BIG5ExcludeList);
204 if (exclude != NULL && (wint_t)start <= exclude->end)
205 return (EINVAL);
206 exclude = (void *)malloc(sizeof(*exclude));
207 if (exclude == NULL)
208 return (ENOMEM);
209 exclude->start = (wint_t)start;
210 exclude->end = (wint_t)end;
211 TAILQ_INSERT_TAIL(&ei->excludes, exclude, entry);
212
213 return (0);
214}
215
216static const _citrus_prop_hint_t root_hints[] = {
217 _CITRUS_PROP_HINT_NUM("row", &_citrus_BIG5_fill_rowcol),
218 _CITRUS_PROP_HINT_NUM("col", &_citrus_BIG5_fill_rowcol),
219 _CITRUS_PROP_HINT_NUM("excludes", &_citrus_BIG5_fill_excludes),
220 _CITRUS_PROP_HINT_END
221};
222
223static void
224/*ARGSUSED*/
225_citrus_BIG5_encoding_module_uninit(_BIG5EncodingInfo *ei)
226{
227 _BIG5Exclude *exclude;
228
229 while ((exclude = TAILQ_FIRST(&ei->excludes)) != NULL) {
230 TAILQ_REMOVE(&ei->excludes, exclude, entry);
231 free(exclude);
232 }
233}
234
235static int
236/*ARGSUSED*/
237_citrus_BIG5_encoding_module_init(_BIG5EncodingInfo * __restrict ei,
238 const void * __restrict var, size_t lenvar)
239{
240 const char *s;
241 int err;
242
243 memset((void *)ei, 0, sizeof(*ei));
244 TAILQ_INIT(&ei->excludes);
245
246 if (lenvar > 0 && var != NULL) {
247 s = _bcs_skip_ws_len((const char *)var, &lenvar);
248 if (lenvar > 0 && *s != '\0') {
249 err = _citrus_prop_parse_variable(
250 root_hints, (void *)ei, s, lenvar);
251 if (err == 0)
252 return (0);
253
254 _citrus_BIG5_encoding_module_uninit(ei);
255 memset((void *)ei, 0, sizeof(*ei));
256 TAILQ_INIT(&ei->excludes);
257 }
258 }
259
260 /* fallback Big5-1984, for backward compatibility. */
261 _citrus_BIG5_fill_rowcol(ei, "row", 0xA1, 0xFE);
262 _citrus_BIG5_fill_rowcol(ei, "col", 0x40, 0x7E);
263 _citrus_BIG5_fill_rowcol(ei, "col", 0xA1, 0xFE);
264
265 return (0);
266}
267
268static int
269/*ARGSUSED*/
270_citrus_BIG5_mbrtowc_priv(_BIG5EncodingInfo * __restrict ei,
271 wchar_t * __restrict pwc,
| 2/* $NetBSD: citrus_big5.c,v 1.13 2011/05/23 14:53:46 joerg Exp $ */
3
4/*-
5 * Copyright (c)2002, 2006 Citrus Project,
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30/*-
31 * Copyright (c) 1993
32 * The Regents of the University of California. All rights reserved.
33 *
34 * This code is derived from software contributed to Berkeley by
35 * Paul Borman at Krystal Technologies.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 */
61
62#include <sys/cdefs.h>
63#include <sys/queue.h>
64#include <sys/types.h>
65
66#include <assert.h>
67#include <errno.h>
68#include <limits.h>
69#include <stddef.h>
70#include <stdint.h>
71#include <stdio.h>
72#include <stdlib.h>
73#include <string.h>
74#include <wchar.h>
75
76#include "citrus_namespace.h"
77#include "citrus_prop.h"
78#include "citrus_types.h"
79#include "citrus_bcs.h"
80#include "citrus_module.h"
81#include "citrus_stdenc.h"
82#include "citrus_big5.h"
83
84/* ----------------------------------------------------------------------
85 * private stuffs used by templates
86 */
87
88typedef struct {
89 int chlen;
90 char ch[2];
91} _BIG5State;
92
93typedef struct _BIG5Exclude {
94 TAILQ_ENTRY(_BIG5Exclude) entry;
95 wint_t start;
96 wint_t end;
97} _BIG5Exclude;
98
99typedef TAILQ_HEAD(_BIG5ExcludeList, _BIG5Exclude) _BIG5ExcludeList;
100
101typedef struct {
102 _BIG5ExcludeList excludes;
103 int cell[0x100];
104} _BIG5EncodingInfo;
105
106#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
107#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
108
109#define _FUNCNAME(m) _citrus_BIG5_##m
110#define _ENCODING_INFO _BIG5EncodingInfo
111#define _ENCODING_STATE _BIG5State
112#define _ENCODING_MB_CUR_MAX(_ei_) 2
113#define _ENCODING_IS_STATE_DEPENDENT 0
114#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
115
116
117static __inline void
118/*ARGSUSED*/
119_citrus_BIG5_init_state(_BIG5EncodingInfo * __restrict ei __unused,
120 _BIG5State * __restrict s)
121{
122
123 memset(s, 0, sizeof(*s));
124}
125
126#if 0
127static __inline void
128/*ARGSUSED*/
129_citrus_BIG5_pack_state(_BIG5EncodingInfo * __restrict ei __unused,
130 void * __restrict pspriv,
131 const _BIG5State * __restrict s)
132{
133
134 memcpy(pspriv, (const void *)s, sizeof(*s));
135}
136
137static __inline void
138/*ARGSUSED*/
139_citrus_BIG5_unpack_state(_BIG5EncodingInfo * __restrict ei __unused,
140 _BIG5State * __restrict s,
141 const void * __restrict pspriv)
142{
143
144 memcpy((void *)s, pspriv, sizeof(*s));
145}
146#endif
147
148static __inline int
149_citrus_BIG5_check(_BIG5EncodingInfo *ei, unsigned int c)
150{
151
152 return ((ei->cell[c & 0xFF] & 0x1) ? 2 : 1);
153}
154
155static __inline int
156_citrus_BIG5_check2(_BIG5EncodingInfo *ei, unsigned int c)
157{
158
159 return ((ei->cell[c & 0xFF] & 0x2) ? 1 : 0);
160}
161
162static __inline int
163_citrus_BIG5_check_excludes(_BIG5EncodingInfo *ei, wint_t c)
164{
165 _BIG5Exclude *exclude;
166
167 TAILQ_FOREACH(exclude, &ei->excludes, entry) {
168 if (c >= exclude->start && c <= exclude->end)
169 return (EILSEQ);
170 }
171 return (0);
172}
173
174static int
175_citrus_BIG5_fill_rowcol(void * __restrict ctx, const char * __restrict s,
176 uint64_t start, uint64_t end)
177{
178 _BIG5EncodingInfo *ei;
179 uint64_t n;
180 int i;
181
182 if (start > 0xFF || end > 0xFF)
183 return (EINVAL);
184 ei = (_BIG5EncodingInfo *)ctx;
185 i = strcmp("row", s) ? 1 : 0;
186 i = 1 << i;
187 for (n = start; n <= end; ++n)
188 ei->cell[n & 0xFF] |= i;
189 return (0);
190}
191
192static int
193/*ARGSUSED*/
194_citrus_BIG5_fill_excludes(void * __restrict ctx,
195 const char * __restrict s __unused, uint64_t start, uint64_t end)
196{
197 _BIG5EncodingInfo *ei;
198 _BIG5Exclude *exclude;
199
200 if (start > 0xFFFF || end > 0xFFFF)
201 return (EINVAL);
202 ei = (_BIG5EncodingInfo *)ctx;
203 exclude = TAILQ_LAST(&ei->excludes, _BIG5ExcludeList);
204 if (exclude != NULL && (wint_t)start <= exclude->end)
205 return (EINVAL);
206 exclude = (void *)malloc(sizeof(*exclude));
207 if (exclude == NULL)
208 return (ENOMEM);
209 exclude->start = (wint_t)start;
210 exclude->end = (wint_t)end;
211 TAILQ_INSERT_TAIL(&ei->excludes, exclude, entry);
212
213 return (0);
214}
215
216static const _citrus_prop_hint_t root_hints[] = {
217 _CITRUS_PROP_HINT_NUM("row", &_citrus_BIG5_fill_rowcol),
218 _CITRUS_PROP_HINT_NUM("col", &_citrus_BIG5_fill_rowcol),
219 _CITRUS_PROP_HINT_NUM("excludes", &_citrus_BIG5_fill_excludes),
220 _CITRUS_PROP_HINT_END
221};
222
223static void
224/*ARGSUSED*/
225_citrus_BIG5_encoding_module_uninit(_BIG5EncodingInfo *ei)
226{
227 _BIG5Exclude *exclude;
228
229 while ((exclude = TAILQ_FIRST(&ei->excludes)) != NULL) {
230 TAILQ_REMOVE(&ei->excludes, exclude, entry);
231 free(exclude);
232 }
233}
234
235static int
236/*ARGSUSED*/
237_citrus_BIG5_encoding_module_init(_BIG5EncodingInfo * __restrict ei,
238 const void * __restrict var, size_t lenvar)
239{
240 const char *s;
241 int err;
242
243 memset((void *)ei, 0, sizeof(*ei));
244 TAILQ_INIT(&ei->excludes);
245
246 if (lenvar > 0 && var != NULL) {
247 s = _bcs_skip_ws_len((const char *)var, &lenvar);
248 if (lenvar > 0 && *s != '\0') {
249 err = _citrus_prop_parse_variable(
250 root_hints, (void *)ei, s, lenvar);
251 if (err == 0)
252 return (0);
253
254 _citrus_BIG5_encoding_module_uninit(ei);
255 memset((void *)ei, 0, sizeof(*ei));
256 TAILQ_INIT(&ei->excludes);
257 }
258 }
259
260 /* fallback Big5-1984, for backward compatibility. */
261 _citrus_BIG5_fill_rowcol(ei, "row", 0xA1, 0xFE);
262 _citrus_BIG5_fill_rowcol(ei, "col", 0x40, 0x7E);
263 _citrus_BIG5_fill_rowcol(ei, "col", 0xA1, 0xFE);
264
265 return (0);
266}
267
268static int
269/*ARGSUSED*/
270_citrus_BIG5_mbrtowc_priv(_BIG5EncodingInfo * __restrict ei,
271 wchar_t * __restrict pwc,
|
278 int c, chlenbak;
279
280 s0 = *s;
281
282 if (s0 == NULL) {
283 _citrus_BIG5_init_state(ei, psenc);
284 *nresult = 0;
285 return (0);
286 }
287
288 chlenbak = psenc->chlen;
289
290 /* make sure we have the first byte in the buffer */
291 switch (psenc->chlen) {
292 case 0:
293 if (n < 1)
294 goto restart;
295 psenc->ch[0] = *s0++;
296 psenc->chlen = 1;
297 n--;
298 break;
299 case 1:
300 break;
301 default:
302 /* illegal state */
303 goto ilseq;
304 }
305
306 c = _citrus_BIG5_check(ei, psenc->ch[0] & 0xff);
307 if (c == 0)
308 goto ilseq;
309 while (psenc->chlen < c) {
310 if (n < 1) {
311 goto restart;
312 }
313 psenc->ch[psenc->chlen] = *s0++;
314 psenc->chlen++;
315 n--;
316 }
317
318 switch (c) {
319 case 1:
320 wchar = psenc->ch[0] & 0xff;
321 break;
322 case 2:
323 if (!_citrus_BIG5_check2(ei, psenc->ch[1] & 0xff))
324 goto ilseq;
325 wchar = ((psenc->ch[0] & 0xff) << 8) | (psenc->ch[1] & 0xff);
326 break;
327 default:
328 /* illegal state */
329 goto ilseq;
330 }
331
332 if (_citrus_BIG5_check_excludes(ei, (wint_t)wchar) != 0)
333 goto ilseq;
334
335 *s = s0;
336 psenc->chlen = 0;
337 if (pwc)
338 *pwc = wchar;
339 *nresult = wchar ? c - chlenbak : 0;
340
341 return (0);
342
343ilseq:
344 psenc->chlen = 0;
345 *nresult = (size_t)-1;
346 return (EILSEQ);
347
348restart:
349 *s = s0;
350 *nresult = (size_t)-2;
351 return (0);
352}
353
354static int
355/*ARGSUSED*/
356_citrus_BIG5_wcrtomb_priv(_BIG5EncodingInfo * __restrict ei,
357 char * __restrict s,
358 size_t n, wchar_t wc, _BIG5State * __restrict psenc __unused,
359 size_t * __restrict nresult)
360{
361 size_t l;
362 int ret;
363
364 /* check invalid sequence */
365 if (wc & ~0xffff ||
366 _citrus_BIG5_check_excludes(ei, (wint_t)wc) != 0) {
367 ret = EILSEQ;
368 goto err;
369 }
370
371 if (wc & 0x8000) {
372 if (_citrus_BIG5_check(ei, (wc >> 8) & 0xff) != 2 ||
373 !_citrus_BIG5_check2(ei, wc & 0xff)) {
374 ret = EILSEQ;
375 goto err;
376 }
377 l = 2;
378 } else {
379 if (wc & ~0xff || !_citrus_BIG5_check(ei, wc & 0xff)) {
380 ret = EILSEQ;
381 goto err;
382 }
383 l = 1;
384 }
385
386 if (n < l) {
387 /* bound check failure */
388 ret = E2BIG;
389 goto err;
390 }
391
392 if (l == 2) {
393 s[0] = (wc >> 8) & 0xff;
394 s[1] = wc & 0xff;
395 } else
396 s[0] = wc & 0xff;
397
398 *nresult = l;
399
400 return (0);
401
402err:
403 *nresult = (size_t)-1;
404 return (ret);
405}
406
407static __inline int
408/*ARGSUSED*/
409_citrus_BIG5_stdenc_wctocs(_BIG5EncodingInfo * __restrict ei __unused,
410 _csid_t * __restrict csid,
411 _index_t * __restrict idx, wchar_t wc)
412{
413
414 *csid = (wc < 0x100) ? 0 : 1;
415 *idx = (_index_t)wc;
416
417 return (0);
418}
419
420static __inline int
421/*ARGSUSED*/
422_citrus_BIG5_stdenc_cstowc(_BIG5EncodingInfo * __restrict ei __unused,
423 wchar_t * __restrict wc,
424 _csid_t csid, _index_t idx)
425{
426
427 switch (csid) {
428 case 0:
429 case 1:
430 *wc = (wchar_t)idx;
431 break;
432 default:
433 return (EILSEQ);
434 }
435
436 return (0);
437}
438
439static __inline int
440/*ARGSUSED*/
441_citrus_BIG5_stdenc_get_state_desc_generic(_BIG5EncodingInfo * __restrict ei __unused,
442 _BIG5State * __restrict psenc,
443 int * __restrict rstate)
444{
445
446 *rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
447 _STDENC_SDGEN_INCOMPLETE_CHAR;
448 return (0);
449}
450
451/* ----------------------------------------------------------------------
452 * public interface for stdenc
453 */
454
455_CITRUS_STDENC_DECLS(BIG5);
456_CITRUS_STDENC_DEF_OPS(BIG5);
457
458#include "citrus_stdenc_template.h"
| 278 int c, chlenbak;
279
280 s0 = *s;
281
282 if (s0 == NULL) {
283 _citrus_BIG5_init_state(ei, psenc);
284 *nresult = 0;
285 return (0);
286 }
287
288 chlenbak = psenc->chlen;
289
290 /* make sure we have the first byte in the buffer */
291 switch (psenc->chlen) {
292 case 0:
293 if (n < 1)
294 goto restart;
295 psenc->ch[0] = *s0++;
296 psenc->chlen = 1;
297 n--;
298 break;
299 case 1:
300 break;
301 default:
302 /* illegal state */
303 goto ilseq;
304 }
305
306 c = _citrus_BIG5_check(ei, psenc->ch[0] & 0xff);
307 if (c == 0)
308 goto ilseq;
309 while (psenc->chlen < c) {
310 if (n < 1) {
311 goto restart;
312 }
313 psenc->ch[psenc->chlen] = *s0++;
314 psenc->chlen++;
315 n--;
316 }
317
318 switch (c) {
319 case 1:
320 wchar = psenc->ch[0] & 0xff;
321 break;
322 case 2:
323 if (!_citrus_BIG5_check2(ei, psenc->ch[1] & 0xff))
324 goto ilseq;
325 wchar = ((psenc->ch[0] & 0xff) << 8) | (psenc->ch[1] & 0xff);
326 break;
327 default:
328 /* illegal state */
329 goto ilseq;
330 }
331
332 if (_citrus_BIG5_check_excludes(ei, (wint_t)wchar) != 0)
333 goto ilseq;
334
335 *s = s0;
336 psenc->chlen = 0;
337 if (pwc)
338 *pwc = wchar;
339 *nresult = wchar ? c - chlenbak : 0;
340
341 return (0);
342
343ilseq:
344 psenc->chlen = 0;
345 *nresult = (size_t)-1;
346 return (EILSEQ);
347
348restart:
349 *s = s0;
350 *nresult = (size_t)-2;
351 return (0);
352}
353
354static int
355/*ARGSUSED*/
356_citrus_BIG5_wcrtomb_priv(_BIG5EncodingInfo * __restrict ei,
357 char * __restrict s,
358 size_t n, wchar_t wc, _BIG5State * __restrict psenc __unused,
359 size_t * __restrict nresult)
360{
361 size_t l;
362 int ret;
363
364 /* check invalid sequence */
365 if (wc & ~0xffff ||
366 _citrus_BIG5_check_excludes(ei, (wint_t)wc) != 0) {
367 ret = EILSEQ;
368 goto err;
369 }
370
371 if (wc & 0x8000) {
372 if (_citrus_BIG5_check(ei, (wc >> 8) & 0xff) != 2 ||
373 !_citrus_BIG5_check2(ei, wc & 0xff)) {
374 ret = EILSEQ;
375 goto err;
376 }
377 l = 2;
378 } else {
379 if (wc & ~0xff || !_citrus_BIG5_check(ei, wc & 0xff)) {
380 ret = EILSEQ;
381 goto err;
382 }
383 l = 1;
384 }
385
386 if (n < l) {
387 /* bound check failure */
388 ret = E2BIG;
389 goto err;
390 }
391
392 if (l == 2) {
393 s[0] = (wc >> 8) & 0xff;
394 s[1] = wc & 0xff;
395 } else
396 s[0] = wc & 0xff;
397
398 *nresult = l;
399
400 return (0);
401
402err:
403 *nresult = (size_t)-1;
404 return (ret);
405}
406
407static __inline int
408/*ARGSUSED*/
409_citrus_BIG5_stdenc_wctocs(_BIG5EncodingInfo * __restrict ei __unused,
410 _csid_t * __restrict csid,
411 _index_t * __restrict idx, wchar_t wc)
412{
413
414 *csid = (wc < 0x100) ? 0 : 1;
415 *idx = (_index_t)wc;
416
417 return (0);
418}
419
420static __inline int
421/*ARGSUSED*/
422_citrus_BIG5_stdenc_cstowc(_BIG5EncodingInfo * __restrict ei __unused,
423 wchar_t * __restrict wc,
424 _csid_t csid, _index_t idx)
425{
426
427 switch (csid) {
428 case 0:
429 case 1:
430 *wc = (wchar_t)idx;
431 break;
432 default:
433 return (EILSEQ);
434 }
435
436 return (0);
437}
438
439static __inline int
440/*ARGSUSED*/
441_citrus_BIG5_stdenc_get_state_desc_generic(_BIG5EncodingInfo * __restrict ei __unused,
442 _BIG5State * __restrict psenc,
443 int * __restrict rstate)
444{
445
446 *rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
447 _STDENC_SDGEN_INCOMPLETE_CHAR;
448 return (0);
449}
450
451/* ----------------------------------------------------------------------
452 * public interface for stdenc
453 */
454
455_CITRUS_STDENC_DECLS(BIG5);
456_CITRUS_STDENC_DEF_OPS(BIG5);
457
458#include "citrus_stdenc_template.h"
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