?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
x86: Expand the comment on when REP STOSB is used on memset
[glibc.git] / iconvdata / iso-2022-jp-3.c
blob85f8edb0bc0f07f0920fd35fe296eb892a012ca4
1 /* Conversion module for ISO-2022-JP-3.
2 Copyright (C) 1998-2024 Free Software Foundation, Inc.
3 Copyright The GNU Toolchain Authors.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20 #include <assert.h>
21 #include <dlfcn.h>
22 #include <gconv.h>
23 #include <stdint.h>
24 #include <string.h>
25
26 #include "jis0201.h"
27 #include "jis0208.h"
28 #include "jisx0213.h"
29
30 /* This makes obvious what everybody knows: 0x1b is the Esc character. */
31 #define ESC 0x1b
32
33 /* Definitions used in the body of the `gconv' function. */
34 #define CHARSET_NAME "ISO-2022-JP-3//"
35 #define FROM_LOOP from_iso2022jp3_loop
36 #define TO_LOOP to_iso2022jp3_loop
37 #define DEFINE_INIT 1
38 #define DEFINE_FINI 1
39 #define ONE_DIRECTION 0
40 #define FROM_LOOP_MIN_NEEDED_FROM 1
41 #define FROM_LOOP_MAX_NEEDED_FROM 4
42 #define FROM_LOOP_MIN_NEEDED_TO 4
43 #define FROM_LOOP_MAX_NEEDED_TO 8
44 #define TO_LOOP_MIN_NEEDED_FROM 4
45 #define TO_LOOP_MAX_NEEDED_FROM 4
46 #define TO_LOOP_MIN_NEEDED_TO 1
47 #define TO_LOOP_MAX_NEEDED_TO 6
48 #define PREPARE_LOOP \
49 int saved_state; \
50 int *statep = &data->__statep->__count;
51 #define EXTRA_LOOP_ARGS , statep
52
53
54 /* The COUNT element of the state keeps track of the currently selected
55 character set. The possible values are: */
56 enum
57 {
58 ASCII_set = 0, /* Esc ( B */
59 JISX0208_1978_set = 1 << 3, /* Esc $ @ */
60 JISX0208_1983_set = 2 << 3, /* Esc $ B */
61 JISX0201_Roman_set = 3 << 3, /* Esc ( J */
62 JISX0201_Kana_set = 4 << 3, /* Esc ( I */
63 JISX0213_1_2000_set = 5 << 3, /* Esc $ ( O */
64 JISX0213_2_set = 6 << 3, /* Esc $ ( P */
65 JISX0213_1_2004_set = 7 << 3, /* Esc $ ( Q */
66 CURRENT_SEL_MASK = 7 << 3
67 };
68
69 /* During UCS-4 to ISO-2022-JP-3 conversion, the COUNT element of the
70 state also contains the last two bytes to be output, shifted by 6
71 bits, and a one-bit indicator whether they must be preceded by the
72 shift sequence, in bit 22. During ISO-2022-JP-3 to UCS-4
73 conversion, COUNT may also contain a non-zero pending wide
74 character, shifted by six bits. This happens for certain inputs in
75 JISX0213_1_2004_set and JISX0213_2_set if the second wide character
76 in a combining sequence cannot be written because the buffer is
77 full. */
78
79 /* Since this is a stateful encoding we have to provide code which resets
80 the output state to the initial state. This has to be done during the
81 flushing. */
82 #define EMIT_SHIFT_TO_INIT \
83 if ((data->__statep->__count & ~7) != ASCII_set) \
84 { \
85 if (FROM_DIRECTION) \
86 { \
87 uint32_t ch = data->__statep->__count >> 6; \
88 \
89 if (__glibc_unlikely (ch != 0)) \
90 { \
91 if (__glibc_likely (outbuf + 4 <= outend)) \
92 { \
93 /* Write out the last character. */ \
94 put32 (outbuf, ch); \
95 outbuf += 4; \
96 data->__statep->__count &= 7; \
97 data->__statep->__count |= ASCII_set; \
98 } \
99 else \
100 /* We don't have enough room in the output buffer. */ \
101 status = __GCONV_FULL_OUTPUT; \
102 } \
103 else \
104 { \
105 data->__statep->__count &= 7; \
106 data->__statep->__count |= ASCII_set; \
107 } \
108 } \
109 else \
110 { \
111 /* We are not in the initial state. To switch back we have \
112 to write out the buffered character and/or emit the sequence \
113 `Esc ( B'. */ \
114 size_t need = \
115 (data->__statep->__count >> 6 \
116 ? (data->__statep->__count >> 22 ? 3 : 0) + 2 \
117 : 0) \
118 + ((data->__statep->__count & CURRENT_SEL_MASK) != ASCII_set \
119 ? 3 : 0); \
120 \
121 if (__glibc_unlikely (outbuf + need > outend)) \
122 /* We don't have enough room in the output buffer. */ \
123 status = __GCONV_FULL_OUTPUT; \
124 else \
125 { \
126 if (data->__statep->__count >> 6) \
127 { \
128 uint32_t lasttwo = data->__statep->__count >> 6; \
129 \
130 if (lasttwo >> 16) \
131 { \
132 /* Write out the shift sequence before the last \
133 character. */ \
134 assert ((data->__statep->__count & CURRENT_SEL_MASK) \
135 == JISX0208_1983_set); \
136 *outbuf++ = ESC; \
137 *outbuf++ = '$'; \
138 *outbuf++ = 'B'; \
139 } \
140 /* Write out the last character. */ \
141 *outbuf++ = (lasttwo >> 8) & 0xff; \
142 *outbuf++ = lasttwo & 0xff; \
143 } \
144 if ((data->__statep->__count & CURRENT_SEL_MASK) != ASCII_set) \
145 { \
146 /* Write out the shift sequence. */ \
147 *outbuf++ = ESC; \
148 *outbuf++ = '('; \
149 *outbuf++ = 'B'; \
150 } \
151 data->__statep->__count &= 7; \
152 data->__statep->__count |= ASCII_set; \
153 } \
154 } \
155 }
156
157
158 /* Since we might have to reset input pointer we must be able to save
159 and restore the state. */
160 #define SAVE_RESET_STATE(Save) \
161 if (Save) \
162 saved_state = *statep; \
163 else \
164 *statep = saved_state
165
166
167 /* First define the conversion function from ISO-2022-JP-3 to UCS-4. */
168 #define MIN_NEEDED_INPUT FROM_LOOP_MIN_NEEDED_FROM
169 #define MAX_NEEDED_INPUT FROM_LOOP_MAX_NEEDED_FROM
170 #define MIN_NEEDED_OUTPUT FROM_LOOP_MIN_NEEDED_TO
171 #define MAX_NEEDED_OUTPUT FROM_LOOP_MAX_NEEDED_TO
172 #define LOOPFCT FROM_LOOP
173 #define BODY \
174 { \
175 uint32_t ch; \
176 \
177 /* Output any pending character. */ \
178 ch = set >> 6; \
179 if (__glibc_unlikely (ch != 0)) \
180 { \
181 put32 (outptr, ch); \
182 outptr += 4; \
183 /* Remove the pending character, but preserve state bits. */ \
184 set &= (1 << 6) - 1; \
185 continue; \
186 } \
187 \
188 /* Otherwise read the next input byte. */ \
189 ch = *inptr; \
190 \
191 /* Recognize escape sequences. */ \
192 if (__glibc_unlikely (ch == ESC)) \
193 { \
194 /* We now must be prepared to read two to three more bytes. \
195 If we have a match in the first byte but then the input buffer \
196 ends we terminate with an error since we must not risk missing \
197 an escape sequence just because it is not entirely in the \
198 current input buffer. */ \
199 if (__builtin_expect (inptr + 2 >= inend, 0) \
200 || (inptr[1] == '$' && inptr[2] == '(' \
201 && __builtin_expect (inptr + 3 >= inend, 0))) \
202 { \
203 /* Not enough input available. */ \
204 result = __GCONV_INCOMPLETE_INPUT; \
205 break; \
206 } \
207 \
208 if (inptr[1] == '(') \
209 { \
210 if (inptr[2] == 'B') \
211 { \
212 /* ASCII selected. */ \
213 set = ASCII_set; \
214 inptr += 3; \
215 continue; \
216 } \
217 else if (inptr[2] == 'J') \
218 { \
219 /* JIS X 0201 selected. */ \
220 set = JISX0201_Roman_set; \
221 inptr += 3; \
222 continue; \
223 } \
224 else if (inptr[2] == 'I') \
225 { \
226 /* JIS X 0201 selected. */ \
227 set = JISX0201_Kana_set; \
228 inptr += 3; \
229 continue; \
230 } \
231 } \
232 else if (inptr[1] == '$') \
233 { \
234 if (inptr[2] == '@') \
235 { \
236 /* JIS X 0208-1978 selected. */ \
237 set = JISX0208_1978_set; \
238 inptr += 3; \
239 continue; \
240 } \
241 else if (inptr[2] == 'B') \
242 { \
243 /* JIS X 0208-1983 selected. */ \
244 set = JISX0208_1983_set; \
245 inptr += 3; \
246 continue; \
247 } \
248 else if (inptr[2] == '(') \
249 { \
250 if (inptr[3] == 'O' || inptr[3] == 'Q') \
251 { \
252 /* JIS X 0213 plane 1 selected. */ \
253 /* In this direction we don't need to distinguish the \
254 versions from 2000 and 2004. */ \
255 set = JISX0213_1_2004_set; \
256 inptr += 4; \
257 continue; \
258 } \
259 else if (inptr[3] == 'P') \
260 { \
261 /* JIS X 0213 plane 2 selected. */ \
262 set = JISX0213_2_set; \
263 inptr += 4; \
264 continue; \
265 } \
266 } \
267 } \
268 } \
269 \
270 if (ch >= 0x80) \
271 { \
272 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
273 } \
274 else if (set == ASCII_set || (ch < 0x21 || ch == 0x7f)) \
275 /* Almost done, just advance the input pointer. */ \
276 ++inptr; \
277 else if (set == JISX0201_Roman_set) \
278 { \
279 /* Use the JIS X 0201 table. */ \
280 ch = jisx0201_to_ucs4 (ch); \
281 if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
282 { \
283 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
284 } \
285 ++inptr; \
286 } \
287 else if (set == JISX0201_Kana_set) \
288 { \
289 /* Use the JIS X 0201 table. */ \
290 ch = jisx0201_to_ucs4 (ch + 0x80); \
291 if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
292 { \
293 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
294 } \
295 ++inptr; \
296 } \
297 else if (set == JISX0208_1978_set || set == JISX0208_1983_set) \
298 { \
299 /* XXX I don't have the tables for these two old variants of \
300 JIS X 0208. Therefore I'm using the tables for JIS X \
301 0208-1990. If somebody has problems with this please \
302 provide the appropriate tables. */ \
303 ch = jisx0208_to_ucs4 (&inptr, inend - inptr, 0); \
304 \
305 if (__glibc_unlikely (ch == 0)) \
306 { \
307 result = __GCONV_INCOMPLETE_INPUT; \
308 break; \
309 } \
310 else if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
311 { \
312 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
313 } \
314 } \
315 else /* (set == JISX0213_1_2004_set || set == JISX0213_2_set) */ \
316 { \
317 if (__glibc_unlikely (inptr + 1 >= inend)) \
318 { \
319 result = __GCONV_INCOMPLETE_INPUT; \
320 break; \
321 } \
322 \
323 ch = jisx0213_to_ucs4 ( \
324 ((JISX0213_1_2004_set - set + (1 << 3)) << 5) + ch, \
325 inptr[1]); \
326 if (ch == 0) \
327 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
328 \
329 if (ch < 0x80) \
330 { \
331 /* It's a combining character. */ \
332 uint32_t u1 = __jisx0213_to_ucs_combining[ch - 1][0]; \
333 uint32_t u2 = __jisx0213_to_ucs_combining[ch - 1][1]; \
334 \
335 inptr += 2; \
336 \
337 put32 (outptr, u1); \
338 outptr += 4; \
339 \
340 /* See whether we have room for two characters. */ \
341 if (outptr + 4 <= outend) \
342 { \
343 put32 (outptr, u2); \
344 outptr += 4; \
345 continue; \
346 } \
347 \
348 /* Otherwise store only the first character now, and \
349 put the second one into the queue. */ \
350 set |= u2 << 6; \
351 /* Tell the caller why we terminate the loop. */ \
352 result = __GCONV_FULL_OUTPUT; \
353 break; \
354 } \
355 \
356 inptr += 2; \
357 } \
358 \
359 put32 (outptr, ch); \
360 outptr += 4; \
361 }
362 #define LOOP_NEED_FLAGS
363 #define EXTRA_LOOP_DECLS , int *statep
364 #define INIT_PARAMS int set = *statep
365 #define UPDATE_PARAMS *statep = set
366 #include <iconv/loop.c>
367
368
369 /* Next, define the other direction, from UCS-4 to ISO-2022-JP-3. */
370
371 /* Composition tables for each of the relevant combining characters. */
372 static const struct
373 {
374 uint16_t base;
375 uint16_t composed;
376 } comp_table_data[] =
377 {
378 #define COMP_TABLE_IDX_02E5 0
379 #define COMP_TABLE_LEN_02E5 1
380 { 0x2b64, 0x2b65 }, /* 0x12B65 = 0x12B64 U+02E5 */
381 #define COMP_TABLE_IDX_02E9 (COMP_TABLE_IDX_02E5 + COMP_TABLE_LEN_02E5)
382 #define COMP_TABLE_LEN_02E9 1
383 { 0x2b60, 0x2b66 }, /* 0x12B66 = 0x12B60 U+02E9 */
384 #define COMP_TABLE_IDX_0300 (COMP_TABLE_IDX_02E9 + COMP_TABLE_LEN_02E9)
385 #define COMP_TABLE_LEN_0300 5
386 { 0x295c, 0x2b44 }, /* 0x12B44 = 0x1295C U+0300 */
387 { 0x2b38, 0x2b48 }, /* 0x12B48 = 0x12B38 U+0300 */
388 { 0x2b37, 0x2b4a }, /* 0x12B4A = 0x12B37 U+0300 */
389 { 0x2b30, 0x2b4c }, /* 0x12B4C = 0x12B30 U+0300 */
390 { 0x2b43, 0x2b4e }, /* 0x12B4E = 0x12B43 U+0300 */
391 #define COMP_TABLE_IDX_0301 (COMP_TABLE_IDX_0300 + COMP_TABLE_LEN_0300)
392 #define COMP_TABLE_LEN_0301 4
393 { 0x2b38, 0x2b49 }, /* 0x12B49 = 0x12B38 U+0301 */
394 { 0x2b37, 0x2b4b }, /* 0x12B4B = 0x12B37 U+0301 */
395 { 0x2b30, 0x2b4d }, /* 0x12B4D = 0x12B30 U+0301 */
396 { 0x2b43, 0x2b4f }, /* 0x12B4F = 0x12B43 U+0301 */
397 #define COMP_TABLE_IDX_309A (COMP_TABLE_IDX_0301 + COMP_TABLE_LEN_0301)
398 #define COMP_TABLE_LEN_309A 14
399 { 0x242b, 0x2477 }, /* 0x12477 = 0x1242B U+309A */
400 { 0x242d, 0x2478 }, /* 0x12478 = 0x1242D U+309A */
401 { 0x242f, 0x2479 }, /* 0x12479 = 0x1242F U+309A */
402 { 0x2431, 0x247a }, /* 0x1247A = 0x12431 U+309A */
403 { 0x2433, 0x247b }, /* 0x1247B = 0x12433 U+309A */
404 { 0x252b, 0x2577 }, /* 0x12577 = 0x1252B U+309A */
405 { 0x252d, 0x2578 }, /* 0x12578 = 0x1252D U+309A */
406 { 0x252f, 0x2579 }, /* 0x12579 = 0x1252F U+309A */
407 { 0x2531, 0x257a }, /* 0x1257A = 0x12531 U+309A */
408 { 0x2533, 0x257b }, /* 0x1257B = 0x12533 U+309A */
409 { 0x253b, 0x257c }, /* 0x1257C = 0x1253B U+309A */
410 { 0x2544, 0x257d }, /* 0x1257D = 0x12544 U+309A */
411 { 0x2548, 0x257e }, /* 0x1257E = 0x12548 U+309A */
412 { 0x2675, 0x2678 }, /* 0x12678 = 0x12675 U+309A */
413 };
414
415 #define MIN_NEEDED_INPUT TO_LOOP_MIN_NEEDED_FROM
416 #define MAX_NEEDED_INPUT TO_LOOP_MAX_NEEDED_FROM
417 #define MIN_NEEDED_OUTPUT TO_LOOP_MIN_NEEDED_TO
418 #define MAX_NEEDED_OUTPUT TO_LOOP_MAX_NEEDED_TO
419 #define LOOPFCT TO_LOOP
420 #define BODY \
421 { \
422 uint32_t ch = get32 (inptr); \
423 \
424 if (lasttwo != 0) \
425 { \
426 /* Attempt to combine the last character with this one. */ \
427 unsigned int idx; \
428 unsigned int len; \
429 \
430 if (ch == 0x02e5) \
431 idx = COMP_TABLE_IDX_02E5, len = COMP_TABLE_LEN_02E5; \
432 else if (ch == 0x02e9) \
433 idx = COMP_TABLE_IDX_02E9, len = COMP_TABLE_LEN_02E9; \
434 else if (ch == 0x0300) \
435 idx = COMP_TABLE_IDX_0300, len = COMP_TABLE_LEN_0300; \
436 else if (ch == 0x0301) \
437 idx = COMP_TABLE_IDX_0301, len = COMP_TABLE_LEN_0301; \
438 else if (ch == 0x309a) \
439 idx = COMP_TABLE_IDX_309A, len = COMP_TABLE_LEN_309A; \
440 else \
441 goto not_combining; \
442 \
443 do \
444 if (comp_table_data[idx].base == (uint16_t) lasttwo) \
445 break; \
446 while (++idx, --len > 0); \
447 \
448 if (len > 0) \
449 { \
450 /* Output the combined character. */ \
451 /* We know the combined character is in JISX0213 plane 1, \
452 but the buffered character may have been in JISX0208 or in \
453 JISX0213 plane 1. */ \
454 size_t need = \
455 (lasttwo >> 16 \
456 || (set != JISX0213_1_2000_set && set != JISX0213_1_2004_set) \
457 ? 4 : 0); \
458 \
459 if (__glibc_unlikely (outptr + need + 2 > outend)) \
460 { \
461 result = __GCONV_FULL_OUTPUT; \
462 break; \
463 } \
464 if (need) \
465 { \
466 /* But first, output the escape sequence. */ \
467 *outptr++ = ESC; \
468 *outptr++ = '$'; \
469 *outptr++ = '('; \
470 *outptr++ = 'O'; \
471 set = JISX0213_1_2000_set; \
472 } \
473 lasttwo = comp_table_data[idx].composed; \
474 *outptr++ = (lasttwo >> 8) & 0xff; \
475 *outptr++ = lasttwo & 0xff; \
476 lasttwo = 0; \
477 inptr += 4; \
478 continue; \
479 } \
480 \
481 not_combining: \
482 /* Output the buffered character. */ \
483 /* We know it is in JISX0208 or in JISX0213 plane 1. */ \
484 { \
485 size_t need = (lasttwo >> 16 ? 3 : 0); \
486 \
487 if (__glibc_unlikely (outptr + need + 2 > outend)) \
488 { \
489 result = __GCONV_FULL_OUTPUT; \
490 break; \
491 } \
492 if (need) \
493 { \
494 /* But first, output the escape sequence. */ \
495 assert (set == JISX0208_1983_set); \
496 *outptr++ = ESC; \
497 *outptr++ = '$'; \
498 *outptr++ = 'B'; \
499 } \
500 *outptr++ = (lasttwo >> 8) & 0xff; \
501 *outptr++ = lasttwo & 0xff; \
502 lasttwo = 0; \
503 continue; \
504 } \
505 } \
506 \
507 /* First see whether we can write the character using the currently \
508 selected character set. */ \
509 if (set == ASCII_set) \
510 { \
511 /* Please note that the NUL byte is *not* matched if we are not \
512 currently using the ASCII charset. This is because we must \
513 switch to the initial state whenever a NUL byte is written. */ \
514 if (ch <= 0x7f) \
515 { \
516 *outptr++ = ch; \
517 inptr += 4; \
518 continue; \
519 } \
520 } \
521 /* ISO-2022-JP recommends to encode the newline character always in \
522 ASCII since this allows a context-free interpretation of the \
523 characters at the beginning of the next line. Otherwise it would \
524 have to be known whether the last line ended using ASCII or \
525 JIS X 0201. */ \
526 else if (set == JISX0201_Roman_set) \
527 { \
528 unsigned char buf[1]; \
529 if (ucs4_to_jisx0201 (ch, buf) != __UNKNOWN_10646_CHAR \
530 && buf[0] > 0x20 && buf[0] < 0x80) \
531 { \
532 *outptr++ = buf[0]; \
533 inptr += 4; \
534 continue; \
535 } \
536 } \
537 else if (set == JISX0201_Kana_set) \
538 { \
539 unsigned char buf[1]; \
540 if (ucs4_to_jisx0201 (ch, buf) != __UNKNOWN_10646_CHAR \
541 && buf[0] >= 0x80) \
542 { \
543 *outptr++ = buf[0] - 0x80; \
544 inptr += 4; \
545 continue; \
546 } \
547 } \
548 else if (/*set == JISX0208_1978_set || */ set == JISX0208_1983_set) \
549 { \
550 size_t written = ucs4_to_jisx0208 (ch, outptr, outend - outptr); \
551 \
552 if (written != __UNKNOWN_10646_CHAR) \
553 { \
554 uint32_t jch = ucs4_to_jisx0213 (ch); \
555 \
556 if (jch & 0x0080) \
557 { \
558 /* A possible match in comp_table_data. Buffer it. */ \
559 lasttwo = jch & 0x7f7f; \
560 inptr += 4; \
561 continue; \
562 } \
563 if (__glibc_unlikely (written == 0)) \
564 { \
565 result = __GCONV_FULL_OUTPUT; \
566 break; \
567 } \
568 else \
569 { \
570 outptr += written; \
571 inptr += 4; \
572 continue; \
573 } \
574 } \
575 } \
576 else \
577 { \
578 /* (set == JISX0213_1_2000_set || set == JISX0213_1_2004_set \
579 || set == JISX0213_2_set) */ \
580 uint32_t jch = ucs4_to_jisx0213 (ch); \
581 \
582 if (jch != 0 \
583 && (jch & 0x8000 \
584 ? set == JISX0213_2_set \
585 : (set == JISX0213_1_2004_set \
586 || (set == JISX0213_1_2000_set \
587 && !jisx0213_added_in_2004_p (jch))))) \
588 { \
589 if (jch & 0x0080) \
590 { \
591 /* A possible match in comp_table_data. Buffer it. */ \
592 \
593 /* We know it's a JISX 0213 plane 1 character. */ \
594 assert ((jch & 0x8000) == 0); \
595 \
596 lasttwo = jch & 0x7f7f; \
597 inptr += 4; \
598 continue; \
599 } \
600 \
601 if (__glibc_unlikely (outptr + 1 >= outend)) \
602 { \
603 result = __GCONV_FULL_OUTPUT; \
604 break; \
605 } \
606 *outptr++ = (jch >> 8) & 0x7f; \
607 *outptr++ = jch & 0x7f; \
608 inptr += 4; \
609 continue; \
610 } \
611 } \
612 \
613 /* The attempts to use the currently selected character set failed, \
614 either because the character requires a different character set, \
615 or because the character is unknown. */ \
616 \
617 if (ch <= 0x7f) \
618 { \
619 /* We must encode using ASCII. First write out the escape \
620 sequence. */ \
621 if (__glibc_unlikely (outptr + 3 > outend)) \
622 { \
623 result = __GCONV_FULL_OUTPUT; \
624 break; \
625 } \
626 \
627 *outptr++ = ESC; \
628 *outptr++ = '('; \
629 *outptr++ = 'B'; \
630 set = ASCII_set; \
631 \
632 if (__glibc_unlikely (outptr >= outend)) \
633 { \
634 result = __GCONV_FULL_OUTPUT; \
635 break; \
636 } \
637 *outptr++ = ch; \
638 } \
639 else \
640 { \
641 unsigned char buf[2]; \
642 \
643 /* Try JIS X 0201 Roman. */ \
644 if (ucs4_to_jisx0201 (ch, buf) != __UNKNOWN_10646_CHAR \
645 && buf[0] > 0x20 && buf[0] < 0x80) \
646 { \
647 if (set != JISX0201_Roman_set) \
648 { \
649 if (__glibc_unlikely (outptr + 3 > outend)) \
650 { \
651 result = __GCONV_FULL_OUTPUT; \
652 break; \
653 } \
654 *outptr++ = ESC; \
655 *outptr++ = '('; \
656 *outptr++ = 'J'; \
657 set = JISX0201_Roman_set; \
658 } \
659 \
660 if (__glibc_unlikely (outptr >= outend)) \
661 { \
662 result = __GCONV_FULL_OUTPUT; \
663 break; \
664 } \
665 *outptr++ = buf[0]; \
666 } \
667 else \
668 { \
669 uint32_t jch = ucs4_to_jisx0213 (ch); \
670 \
671 /* Try JIS X 0208. */ \
672 size_t written = ucs4_to_jisx0208 (ch, buf, 2); \
673 if (written != __UNKNOWN_10646_CHAR) \
674 { \
675 if (jch & 0x0080) \
676 { \
677 /* A possible match in comp_table_data. Buffer it. */ \
678 lasttwo = ((set != JISX0208_1983_set ? 1 : 0) << 16) \
679 | (jch & 0x7f7f); \
680 set = JISX0208_1983_set; \
681 inptr += 4; \
682 continue; \
683 } \
684 \
685 if (set != JISX0208_1983_set) \
686 { \
687 if (__glibc_unlikely (outptr + 3 > outend)) \
688 { \
689 result = __GCONV_FULL_OUTPUT; \
690 break; \
691 } \
692 *outptr++ = ESC; \
693 *outptr++ = '$'; \
694 *outptr++ = 'B'; \
695 set = JISX0208_1983_set; \
696 } \
697 \
698 if (__glibc_unlikely (outptr + 2 > outend)) \
699 { \
700 result = __GCONV_FULL_OUTPUT; \
701 break; \
702 } \
703 *outptr++ = buf[0]; \
704 *outptr++ = buf[1]; \
705 } \
706 else \
707 { \
708 /* Try JIS X 0213. */ \
709 if (jch != 0) \
710 { \
711 int new_set = \
712 (jch & 0x8000 \
713 ? JISX0213_2_set \
714 : jisx0213_added_in_2004_p (jch) \
715 ? JISX0213_1_2004_set \
716 : JISX0213_1_2000_set); \
717 \
718 if (set != new_set) \
719 { \
720 if (__glibc_unlikely (outptr + 4 > outend)) \
721 { \
722 result = __GCONV_FULL_OUTPUT; \
723 break; \
724 } \
725 *outptr++ = ESC; \
726 *outptr++ = '$'; \
727 *outptr++ = '('; \
728 *outptr++ = \
729 ((new_set - JISX0213_1_2000_set) >> 3) + 'O'; \
730 set = new_set; \
731 } \
732 \
733 if (jch & 0x0080) \
734 { \
735 /* A possible match in comp_table_data. \
736 Buffer it. */ \
737 \
738 /* We know it's a JIS X 0213 plane 1 character. */ \
739 assert ((jch & 0x8000) == 0); \
740 \
741 lasttwo = jch & 0x7f7f; \
742 inptr += 4; \
743 continue; \
744 } \
745 \
746 if (__glibc_unlikely (outptr + 1 >= outend)) \
747 { \
748 result = __GCONV_FULL_OUTPUT; \
749 break; \
750 } \
751 *outptr++ = (jch >> 8) & 0x7f; \
752 *outptr++ = jch & 0x7f; \
753 } \
754 else \
755 { \
756 /* Try JIS X 0201 Katakana. This is officially not part \
757 of ISO-2022-JP-3. Therefore we try it after all other \
758 attempts. */ \
759 if (ucs4_to_jisx0201 (ch, buf) != __UNKNOWN_10646_CHAR \
760 && buf[0] >= 0x80) \
761 { \
762 if (set != JISX0201_Kana_set) \
763 { \
764 if (__builtin_expect (outptr + 3 > outend, 0)) \
765 { \
766 result = __GCONV_FULL_OUTPUT; \
767 break; \
768 } \
769 *outptr++ = ESC; \
770 *outptr++ = '('; \
771 *outptr++ = 'I'; \
772 set = JISX0201_Kana_set; \
773 } \
774 \
775 if (__glibc_unlikely (outptr >= outend)) \
776 { \
777 result = __GCONV_FULL_OUTPUT; \
778 break; \
779 } \
780 *outptr++ = buf[0] - 0x80; \
781 } \
782 else \
783 { \
784 UNICODE_TAG_HANDLER (ch, 4); \
785 \
786 /* Illegal character. */ \
787 STANDARD_TO_LOOP_ERR_HANDLER (4); \
788 } \
789 } \
790 } \
791 } \
792 } \
793 \
794 /* Now that we wrote the output increment the input pointer. */ \
795 inptr += 4; \
796 }
797 #define LOOP_NEED_FLAGS
798 #define EXTRA_LOOP_DECLS , int *statep
799 #define INIT_PARAMS int set = *statep & CURRENT_SEL_MASK; \
800 uint32_t lasttwo = *statep >> 6
801 #define REINIT_PARAMS do \
802 { \
803 set = *statep & CURRENT_SEL_MASK; \
804 lasttwo = *statep >> 6; \
805 } \
806 while (0)
807 #define UPDATE_PARAMS *statep = set | (lasttwo << 6)
808 #include <iconv/loop.c>
809
810
811 /* Now define the toplevel functions. */
812 #include <iconv/skeleton.c>
sources.redhat.com git mirror of glibc CVS