1/* Conversion module for ISO-2022-CN-EXT.
2 Copyright (C) 2000-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
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 <dlfcn.h>
21#include <gconv.h>
22#include <stdint.h>
23#include <stdlib.h>
24#include <string.h>
25#include "gb2312.h"
26#include "iso-ir-165.h"
27#include "cns11643.h"
28#include "cns11643l1.h"
29#include "cns11643l2.h"
30#include <libc-diag.h>
31
32#include <assert.h>
33
34/* This makes obvious what everybody knows: 0x1b is the Esc character. */
35#define ESC 0x1b
36
37/* We have single-byte shift-in and shift-out sequences, and the single
38 shift sequences SS2 and SS3 which replaces the SS2/SS3 designation for
39 the next two bytes. */
40#define SI 0x0f
41#define SO 0x0e
42#define SS2_0 ESC
43#define SS2_1 0x4e
44#define SS3_0 ESC
45#define SS3_1 0x4f
46
47/* Definitions used in the body of the `gconv' function. */
48#define CHARSET_NAME "ISO-2022-CN-EXT//"
49#define DEFINE_INIT 1
50#define DEFINE_FINI 1
51#define ONE_DIRECTION 0
52#define FROM_LOOP from_iso2022cn_ext_loop
53#define TO_LOOP to_iso2022cn_ext_loop
54#define FROM_LOOP_MIN_NEEDED_FROM 1
55#define FROM_LOOP_MAX_NEEDED_FROM 4
56#define FROM_LOOP_MIN_NEEDED_TO 4
57#define FROM_LOOP_MAX_NEEDED_TO 4
58#define TO_LOOP_MIN_NEEDED_FROM 4
59#define TO_LOOP_MAX_NEEDED_FROM 4
60#define TO_LOOP_MIN_NEEDED_TO 1
61#define TO_LOOP_MAX_NEEDED_TO 6
62#define PREPARE_LOOP \
63 int save_set; \
64 int *setp = &data->__statep->__count;
65#define EXTRA_LOOP_ARGS , setp
66
67
68/* The charsets GB/T 12345-90, GB 7589-87, GB/T 13131-9X, GB 7590-87,
69 and GB/T 13132-9X are not registered to the best of my knowledge and
70 therefore have no escape sequence assigned. We cannot handle them
71 for this reason. Tell the implementation about this. */
72#define X12345 '\0'
73#define X7589 '\0'
74#define X13131 '\0'
75#define X7590 '\0'
76#define X13132 '\0'
77
78
79/* The COUNT element of the state keeps track of the currently selected
80 character set. The possible values are: */
81enum
82{
83 ASCII_set = 0,
84 GB2312_set,
85 GB12345_set,
86 CNS11643_1_set,
87 ISO_IR_165_set,
88 SO_mask = 7,
89
90 GB7589_set = 1 << 3,
91 GB13131_set = 2 << 3,
92 CNS11643_2_set = 3 << 3,
93 SS2_mask = 3 << 3,
94
95 GB7590_set = 1 << 5,
96 GB13132_set = 2 << 5,
97 CNS11643_3_set = 3 << 5,
98 CNS11643_4_set = 4 << 5,
99 CNS11643_5_set = 5 << 5,
100 CNS11643_6_set = 6 << 5,
101 CNS11643_7_set = 7 << 5,
102 SS3_mask = 7 << 5,
103
104#define CURRENT_MASK (SO_mask | SS2_mask | SS3_mask)
105
106 GB2312_ann = 1 << 8,
107 GB12345_ann = 2 << 8,
108 CNS11643_1_ann = 3 << 8,
109 ISO_IR_165_ann = 4 << 8,
110 SO_ann = 7 << 8,
111
112 GB7589_ann = 1 << 11,
113 GB13131_ann = 2 << 11,
114 CNS11643_2_ann = 3 << 11,
115 SS2_ann = 3 << 11,
116
117 GB7590_ann = 1 << 13,
118 GB13132_ann = 2 << 13,
119 CNS11643_3_ann = 3 << 13,
120 CNS11643_4_ann = 4 << 13,
121 CNS11643_5_ann = 5 << 13,
122 CNS11643_6_ann = 6 << 13,
123 CNS11643_7_ann = 7 << 13,
124 SS3_ann = 7 << 13
125};
126
127
128/* Since this is a stateful encoding we have to provide code which resets
129 the output state to the initial state. This has to be done during the
130 flushing. */
131#define EMIT_SHIFT_TO_INIT \
132 if (data->__statep->__count >> 3 != ASCII_set) \
133 { \
134 if (FROM_DIRECTION) \
135 /* It's easy, we don't have to emit anything, we just reset the \
136 state for the input. */ \
137 data->__statep->__count = ASCII_set << 3; \
138 else \
139 { \
140 /* We are not in the initial state. To switch back we have \
141 to emit `SI'. */ \
142 if (__glibc_unlikely (outbuf == outend)) \
143 /* We don't have enough room in the output buffer. */ \
144 status = __GCONV_FULL_OUTPUT; \
145 else \
146 { \
147 /* Write out the shift sequence. */ \
148 *outbuf++ = SI; \
149 if (data->__flags & __GCONV_IS_LAST) \
150 *irreversible += 1; \
151 data->__statep->__count = ASCII_set << 3; \
152 } \
153 } \
154 }
155
156
157/* Since we might have to reset input pointer we must be able to save
158 and retore the state. */
159#define SAVE_RESET_STATE(Save) \
160 if (Save) \
161 save_set = *setp; \
162 else \
163 *setp = save_set
164
165
166/* First define the conversion function from ISO-2022-CN to UCS4. */
167#define MIN_NEEDED_INPUT FROM_LOOP_MIN_NEEDED_FROM
168#define MAX_NEEDED_INPUT FROM_LOOP_MAX_NEEDED_FROM
169#define MIN_NEEDED_OUTPUT FROM_LOOP_MIN_NEEDED_TO
170#define MAX_NEEDED_OUTPUT FROM_LOOP_MAX_NEEDED_TO
171#define LOOPFCT FROM_LOOP
172#define BODY \
173 { \
174 uint32_t ch = *inptr; \
175 \
176 /* This is a 7bit character set, disallow all 8bit characters. */ \
177 if (ch > 0x7f) \
178 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
179 \
180 /* Recognize escape sequences. */ \
181 if (ch == ESC) \
182 { \
183 /* There are three kinds of escape sequences we have to handle: \
184 - those announcing the use of GB and CNS characters on the \
185 line; we can simply ignore them \
186 - the initial byte of the SS2 sequence. \
187 - the initial byte of the SS3 sequence. \
188 */ \
189 if (inptr + 2 > inend \
190 || (inptr[1] == '$' \
191 && (inptr + 3 > inend \
192 || (inptr[2] == ')' && inptr + 4 > inend) \
193 || (inptr[2] == '*' && inptr + 4 > inend) \
194 || (inptr[2] == '+' && inptr + 4 > inend))) \
195 || (inptr[1] == SS2_1 && inptr + 4 > inend) \
196 || (inptr[1] == SS3_1 && inptr + 4 > inend)) \
197 { \
198 result = __GCONV_INCOMPLETE_INPUT; \
199 break; \
200 } \
201 if (inptr[1] == '$' \
202 && ((inptr[2] == ')' \
203 && (inptr[3] == 'A' \
204 || (X12345 != '\0' && inptr[3] == X12345) \
205 || inptr[3] == 'E' || inptr[3] == 'G')) \
206 || (inptr[2] == '*' \
207 && ((X7589 != '\0' && inptr[3] == X7589) \
208 || (X13131 != '\0' && inptr[3] == X13131) \
209 || inptr[3] == 'H')) \
210 || (inptr[2] == '+' \
211 && ((X7590 != '\0' && inptr[3] == X7590) \
212 || (X13132 != '\0' && inptr[3] == X13132) \
213 || inptr[3] == 'I' || inptr[3] == 'J' \
214 || inptr[3] == 'K' || inptr[3] == 'L' \
215 || inptr[3] == 'M')))) \
216 { \
217 /* OK, we accept those character sets. */ \
218 if (inptr[3] == 'A') \
219 ann = (ann & ~SO_ann) | GB2312_ann; \
220 else if (inptr[3] == 'G') \
221 ann = (ann & ~SO_ann) | CNS11643_1_ann; \
222 else if (inptr[3] == 'E') \
223 ann = (ann & ~SO_ann) | ISO_IR_165_ann; \
224 else if (X12345 != '\0' && inptr[3] == X12345) \
225 ann = (ann & ~SO_ann) | GB12345_ann; \
226 else if (inptr[3] == 'H') \
227 ann = (ann & ~SS2_ann) | CNS11643_2_ann; \
228 else if (X7589 != '\0' && inptr[3] == X7589) \
229 ann = (ann & ~SS2_ann) | GB7589_ann; \
230 else if (X13131 != '\0' && inptr[3] == X13131) \
231 ann = (ann & ~SS2_ann) | GB13131_ann; \
232 else if (inptr[3] == 'I') \
233 ann = (ann & ~SS3_ann) | CNS11643_3_ann; \
234 else if (inptr[3] == 'J') \
235 ann = (ann & ~SS3_ann) | CNS11643_4_ann; \
236 else if (inptr[3] == 'K') \
237 ann = (ann & ~SS3_ann) | CNS11643_5_ann; \
238 else if (inptr[3] == 'L') \
239 ann = (ann & ~SS3_ann) | CNS11643_6_ann; \
240 else if (inptr[3] == 'M') \
241 ann = (ann & ~SS3_ann) | CNS11643_7_ann; \
242 else if (X7590 != '\0' && inptr[3] == X7590) \
243 ann = (ann & ~SS3_ann) | GB7590_ann; \
244 else if (X13132 != '\0' && inptr[3] == X13132) \
245 ann = (ann & ~SS3_ann) | GB13132_ann; \
246 inptr += 4; \
247 continue; \
248 } \
249 } \
250 else if (ch == SO) \
251 { \
252 /* Switch to use GB2312, GB12345, CNS 11643 plane 1, or ISO-IR-165, \
253 depending on which S0 designation came last. The only problem \
254 is what to do with faulty input files where no designator came. \
255 XXX For now I'll default to use GB2312. If this is not the \
256 best behavior (e.g., we should flag an error) let me know. */ \
257 ++inptr; \
258 if ((ann & SO_ann) != 0) \
259 switch (ann & SO_ann) \
260 { \
261 case GB2312_ann: \
262 set = GB2312_set; \
263 break; \
264 case GB12345_ann: \
265 set = GB12345_set; \
266 break; \
267 case CNS11643_1_ann: \
268 set = CNS11643_1_set; \
269 break; \
270 case ISO_IR_165_ann: \
271 set = ISO_IR_165_set; \
272 break; \
273 default: \
274 abort (); \
275 } \
276 else \
277 { \
278 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
279 } \
280 continue; \
281 } \
282 else if (ch == SI) \
283 { \
284 /* Switch to use ASCII. */ \
285 ++inptr; \
286 set = ASCII_set; \
287 continue; \
288 } \
289 \
290 if (ch == ESC && inptr[1] == SS2_1) \
291 { \
292 /* This is a character from CNS 11643 plane 2. \
293 XXX We could test here whether the use of this character \
294 set was announced. \
295 XXX Currently GB7589 and GB13131 are not supported. */ \
296 inptr += 2; \
297 ch = cns11643l2_to_ucs4 (&inptr, 2, 0); \
298 if (ch == __UNKNOWN_10646_CHAR) \
299 STANDARD_FROM_LOOP_ERR_HANDLER (2); \
300 } \
301 /* Note that we can assume here that at least 4 bytes are available if \
302 the first byte is ESC since otherwise the first if would have been \
303 true. */ \
304 else if (ch == ESC && inptr[1] == SS3_1) \
305 { \
306 /* This is a character from CNS 11643 plane 3 or higher. \
307 XXX Currently GB7590 and GB13132 are not supported. */ \
308 unsigned char buf[3]; \
309 const unsigned char *tmp = buf; \
310 \
311 buf[1] = inptr[2]; \
312 buf[2] = inptr[3]; \
313 switch (ann & SS3_ann) \
314 { \
315 case CNS11643_3_ann: \
316 buf[0] = 0x23; \
317 ch = cns11643_to_ucs4 (&tmp, 3, 0); \
318 break; \
319 case CNS11643_4_ann: \
320 buf[0] = 0x24; \
321 ch = cns11643_to_ucs4 (&tmp, 3, 0); \
322 break; \
323 case CNS11643_5_ann: \
324 buf[0] = 0x25; \
325 ch = cns11643_to_ucs4 (&tmp, 3, 0); \
326 break; \
327 case CNS11643_6_ann: \
328 buf[0] = 0x26; \
329 ch = cns11643_to_ucs4 (&tmp, 3, 0); \
330 break; \
331 case CNS11643_7_ann: \
332 buf[0] = 0x27; \
333 ch = cns11643_to_ucs4 (&tmp, 3, 0); \
334 break; \
335 default: \
336 /* XXX Currently GB7590 and GB13132 are not supported. */ \
337 ch = __UNKNOWN_10646_CHAR; \
338 break; \
339 } \
340 if (ch == __UNKNOWN_10646_CHAR) \
341 { \
342 STANDARD_FROM_LOOP_ERR_HANDLER (4); \
343 } \
344 assert (tmp == buf + 3); \
345 inptr += 4; \
346 } \
347 else if (set == ASCII_set) \
348 { \
349 /* Almost done, just advance the input pointer. */ \
350 ++inptr; \
351 } \
352 else \
353 { \
354 /* That's pretty easy, we have a dedicated functions for this. */ \
355 if (inend - inptr < 2) \
356 { \
357 result = __GCONV_INCOMPLETE_INPUT; \
358 break; \
359 } \
360 if (set == GB2312_set) \
361 ch = gb2312_to_ucs4 (&inptr, inend - inptr, 0); \
362 else if (set == ISO_IR_165_set) \
363 ch = isoir165_to_ucs4 (&inptr, inend - inptr); \
364 else \
365 { \
366 assert (set == CNS11643_1_set); \
367 ch = cns11643l1_to_ucs4 (&inptr, inend - inptr, 0); \
368 } \
369 \
370 if (ch == 0) \
371 { \
372 result = __GCONV_INCOMPLETE_INPUT; \
373 break; \
374 } \
375 else if (ch == __UNKNOWN_10646_CHAR) \
376 { \
377 STANDARD_FROM_LOOP_ERR_HANDLER (2); \
378 } \
379 } \
380 \
381 *((uint32_t *) outptr) = ch; \
382 outptr += sizeof (uint32_t); \
383 }
384#define EXTRA_LOOP_DECLS , int *setp
385#define INIT_PARAMS int set = (*setp >> 3) & CURRENT_MASK; \
386 int ann = (*setp >> 3) & ~CURRENT_MASK
387#define UPDATE_PARAMS *setp = (set | ann) << 3
388#define LOOP_NEED_FLAGS
389#include <iconv/loop.c>
390
391
392/* Next, define the other direction. */
393#define MIN_NEEDED_INPUT TO_LOOP_MIN_NEEDED_FROM
394#define MAX_NEEDED_INPUT TO_LOOP_MAX_NEEDED_FROM
395#define MIN_NEEDED_OUTPUT TO_LOOP_MIN_NEEDED_TO
396#define MAX_NEEDED_OUTPUT TO_LOOP_MAX_NEEDED_TO
397#define LOOPFCT TO_LOOP
398/* With GCC 5.3 when compiling with -Os the compiler emits a warning
399 that buf[0] and buf[1] may be used uninitialized. This can only
400 happen in the case where tmpbuf[3] is used, and in that case the
401 write to the tmpbuf[1] and tmpbuf[2] was assured because
402 ucs4_to_cns11643 would have filled in those entries. The difficulty
403 is in getting the compiler to see this logic because tmpbuf[0] is
404 involved in determining the code page and is the indicator that
405 tmpbuf[2] is initialized. */
406DIAG_PUSH_NEEDS_COMMENT;
407DIAG_IGNORE_Os_NEEDS_COMMENT (5, "-Wmaybe-uninitialized");
408#define BODY \
409 { \
410 uint32_t ch; \
411 size_t written = 0; \
412 \
413 ch = *((const uint32_t *) inptr); \
414 \
415 /* First see whether we can write the character using the currently \
416 selected character set. */ \
417 if (ch < 0x80) \
418 { \
419 if (set != ASCII_set) \
420 { \
421 *outptr++ = SI; \
422 set = ASCII_set; \
423 if (outptr == outend) \
424 { \
425 result = __GCONV_FULL_OUTPUT; \
426 break; \
427 } \
428 } \
429 \
430 *outptr++ = ch; \
431 written = 1; \
432 \
433 /* At the end of the line we have to clear the `ann' flags since \
434 every line must contain this information again. */ \
435 if (ch == L'\n') \
436 ann = 0; \
437 } \
438 else \
439 { \
440 unsigned char buf[2] = { 0, 0 }; \
441 int used; \
442 \
443 if (set == GB2312_set || ((ann & SO_ann) != CNS11643_1_ann \
444 && (ann & SO_ann) != ISO_IR_165_ann)) \
445 { \
446 written = ucs4_to_gb2312 (ch, buf, 2); \
447 used = GB2312_set; \
448 } \
449 else if (set == ISO_IR_165_set || (ann & SO_ann) == ISO_IR_165_set) \
450 { \
451 written = ucs4_to_isoir165 (ch, buf, 2); \
452 used = ISO_IR_165_set; \
453 } \
454 else \
455 { \
456 written = ucs4_to_cns11643l1 (ch, buf, 2); \
457 used = CNS11643_1_set; \
458 } \
459 \
460 if (written == __UNKNOWN_10646_CHAR) \
461 { \
462 /* Cannot convert it using the currently selected SO set. \
463 Next try the SS2 set. */ \
464 written = ucs4_to_cns11643l2 (ch, buf, 2); \
465 if (written != __UNKNOWN_10646_CHAR) \
466 /* Yep, that worked. */ \
467 used = CNS11643_2_set; \
468 else \
469 { \
470 unsigned char tmpbuf[3]; \
471 \
472 switch (0) \
473 { \
474 default: \
475 /* Well, see whether we have to change the SO set. */ \
476 \
477 if (used != GB2312_set) \
478 { \
479 written = ucs4_to_gb2312 (ch, buf, 2); \
480 if (written != __UNKNOWN_10646_CHAR) \
481 { \
482 used = GB2312_set; \
483 break; \
484 } \
485 } \
486 \
487 if (used != ISO_IR_165_set) \
488 { \
489 written = ucs4_to_isoir165 (ch, buf, 2); \
490 if (written != __UNKNOWN_10646_CHAR) \
491 { \
492 used = ISO_IR_165_set; \
493 break; \
494 } \
495 } \
496 \
497 if (used != CNS11643_1_set) \
498 { \
499 written = ucs4_to_cns11643l1 (ch, buf, 2); \
500 if (written != __UNKNOWN_10646_CHAR) \
501 { \
502 used = CNS11643_1_set; \
503 break; \
504 } \
505 } \
506 \
507 written = ucs4_to_cns11643 (ch, tmpbuf, 3); \
508 if (written == 3 && tmpbuf[0] >= 3 && tmpbuf[0] <= 7) \
509 { \
510 buf[0] = tmpbuf[1]; \
511 buf[1] = tmpbuf[2]; \
512 switch (tmpbuf[0]) \
513 { \
514 case 3: \
515 used = CNS11643_3_set; \
516 break; \
517 case 4: \
518 used = CNS11643_4_set; \
519 break; \
520 case 5: \
521 used = CNS11643_5_set; \
522 break; \
523 case 6: \
524 used = CNS11643_6_set; \
525 break; \
526 case 7: \
527 used = CNS11643_7_set; \
528 break; \
529 default: \
530 abort (); \
531 } \
532 written = 2; \
533 break; \
534 } \
535 \
536 /* XXX Currently GB7590 and GB13132 are not supported. */\
537 \
538 /* Even this does not work. Error. */ \
539 used = ASCII_set; \
540 } \
541 if (used == ASCII_set) \
542 { \
543 UNICODE_TAG_HANDLER (ch, 4); \
544 STANDARD_TO_LOOP_ERR_HANDLER (4); \
545 } \
546 } \
547 } \
548 assert (written == 2); \
549 \
550 /* See whether we have to emit an escape sequence. */ \
551 if (set != used) \
552 { \
553 /* First see whether we announced that we use this \
554 character set. */ \
555 if ((used & SO_mask) != 0 && (ann & SO_ann) != (used << 8)) \
556 { \
557 const char *escseq; \
558 \
559 if (outptr + 4 > outend) \
560 { \
561 result = __GCONV_FULL_OUTPUT; \
562 break; \
563 } \
564 \
565 assert (used >= 1 && used <= 4); \
566 escseq = ")A\0\0)G)E" + (used - 1) * 2; \
567 *outptr++ = ESC; \
568 *outptr++ = '$'; \
569 *outptr++ = *escseq++; \
570 *outptr++ = *escseq++; \
571 \
572 ann = (ann & ~SO_ann) | (used << 8); \
573 } \
574 else if ((used & SS2_mask) != 0 && (ann & SS2_ann) != (used << 8))\
575 { \
576 const char *escseq; \
577 \
578 assert (used == CNS11643_2_set); /* XXX */ \
579 escseq = "*H"; \
580 *outptr++ = ESC; \
581 *outptr++ = '$'; \
582 *outptr++ = *escseq++; \
583 *outptr++ = *escseq++; \
584 \
585 ann = (ann & ~SS2_ann) | (used << 8); \
586 } \
587 else if ((used & SS3_mask) != 0 && (ann & SS3_ann) != (used << 8))\
588 { \
589 const char *escseq; \
590 \
591 assert ((used >> 5) >= 3 && (used >> 5) <= 7); \
592 escseq = "+I+J+K+L+M" + ((used >> 5) - 3) * 2; \
593 *outptr++ = ESC; \
594 *outptr++ = '$'; \
595 *outptr++ = *escseq++; \
596 *outptr++ = *escseq++; \
597 \
598 ann = (ann & ~SS3_ann) | (used << 8); \
599 } \
600 \
601 if (used == CNS11643_2_set) \
602 { \
603 if (outptr + 2 > outend) \
604 { \
605 result = __GCONV_FULL_OUTPUT; \
606 break; \
607 } \
608 *outptr++ = SS2_0; \
609 *outptr++ = SS2_1; \
610 } \
611 else if (used >= CNS11643_3_set && used <= CNS11643_7_set) \
612 { \
613 if (outptr + 2 > outend) \
614 { \
615 result = __GCONV_FULL_OUTPUT; \
616 break; \
617 } \
618 *outptr++ = SS3_0; \
619 *outptr++ = SS3_1; \
620 } \
621 else \
622 { \
623 /* We only have to emit something if currently ASCII is \
624 selected. Otherwise we are switching within the \
625 SO charset. */ \
626 if (set == ASCII_set) \
627 { \
628 if (outptr + 1 > outend) \
629 { \
630 result = __GCONV_FULL_OUTPUT; \
631 break; \
632 } \
633 *outptr++ = SO; \
634 } \
635 } \
636 \
637 /* Always test the length here since we have used up all the \
638 guaranteed output buffer slots. */ \
639 if (outptr + 2 > outend) \
640 { \
641 result = __GCONV_FULL_OUTPUT; \
642 break; \
643 } \
644 } \
645 else if (outptr + 2 > outend) \
646 { \
647 result = __GCONV_FULL_OUTPUT; \
648 break; \
649 } \
650 \
651 *outptr++ = buf[0]; \
652 *outptr++ = buf[1]; \
653 set = used; \
654 } \
655 \
656 /* Now that we wrote the output increment the input pointer. */ \
657 inptr += 4; \
658 }
659DIAG_POP_NEEDS_COMMENT;
660#define EXTRA_LOOP_DECLS , int *setp
661#define INIT_PARAMS int set = (*setp >> 3) & CURRENT_MASK; \
662 int ann = (*setp >> 3) & ~CURRENT_MASK
663#define REINIT_PARAMS do \
664 { \
665 set = (*setp >> 3) & CURRENT_MASK; \
666 ann = (*setp >> 3) & ~CURRENT_MASK; \
667 } \
668 while (0)
669#define UPDATE_PARAMS *setp = (set | ann) << 3
670#define LOOP_NEED_FLAGS
671#include <iconv/loop.c>
672
673
674/* Now define the toplevel functions. */
675#include <iconv/skeleton.c>
676