File: iso-2022-jp-3.c

package info (click to toggle)
glibc 2.28-8
  • links: PTS, VCS
  • area: main
  • in suites: buster, experimental
  • size: 271,788 kB
  • sloc: ansic: 1,008,637; asm: 259,607; makefile: 11,271; sh: 10,477; python: 6,910; cpp: 4,992; perl: 2,258; awk: 2,005; yacc: 290; pascal: 182; sed: 73
file content (773 lines) | stat: -rw-r--r-- 27,858 bytes parent folder | download | duplicates (4)
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
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
/* Conversion module for ISO-2022-JP-3.
   Copyright (C) 1998-2018 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998,
   and Bruno Haible <bruno@clisp.org>, 2002.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <assert.h>
#include <dlfcn.h>
#include <gconv.h>
#include <stdint.h>
#include <string.h>

#include "jis0201.h"
#include "jis0208.h"
#include "jisx0213.h"

/* This makes obvious what everybody knows: 0x1b is the Esc character.  */
#define ESC 0x1b

/* Definitions used in the body of the `gconv' function.  */
#define CHARSET_NAME		"ISO-2022-JP-3//"
#define FROM_LOOP		from_iso2022jp3_loop
#define TO_LOOP			to_iso2022jp3_loop
#define DEFINE_INIT		1
#define DEFINE_FINI		1
#define ONE_DIRECTION		0
#define FROM_LOOP_MIN_NEEDED_FROM	1
#define FROM_LOOP_MAX_NEEDED_FROM	4
#define FROM_LOOP_MIN_NEEDED_TO		4
#define FROM_LOOP_MAX_NEEDED_TO		8
#define TO_LOOP_MIN_NEEDED_FROM		4
#define TO_LOOP_MAX_NEEDED_FROM		4
#define TO_LOOP_MIN_NEEDED_TO		1
#define TO_LOOP_MAX_NEEDED_TO		6
#define PREPARE_LOOP \
  int saved_state;							      \
  int *statep = &data->__statep->__count;
#define EXTRA_LOOP_ARGS		, statep


/* The COUNT element of the state keeps track of the currently selected
   character set.  The possible values are:  */
enum
{
  ASCII_set = 0,		/* Esc ( B */
  JISX0208_1978_set = 1 << 3,	/* Esc $ @ */
  JISX0208_1983_set = 2 << 3,	/* Esc $ B */
  JISX0201_Roman_set = 3 << 3,	/* Esc ( J */
  JISX0201_Kana_set = 4 << 3,	/* Esc ( I */
  JISX0213_1_2000_set = 5 << 3,	/* Esc $ ( O */
  JISX0213_2_set = 6 << 3,	/* Esc $ ( P */
  JISX0213_1_2004_set = 7 << 3,	/* Esc $ ( Q */
  CURRENT_SEL_MASK = 7 << 3
};

/* During UCS-4 to ISO-2022-JP-3 conversion, the COUNT element of the state
   also contains the last two bytes to be output, shifted by 6 bits, and a
   one-bit indicator whether they must be preceded by the shift sequence,
   in bit 22.  */

/* Since this is a stateful encoding we have to provide code which resets
   the output state to the initial state.  This has to be done during the
   flushing.  */
#define EMIT_SHIFT_TO_INIT \
  if ((data->__statep->__count & ~7) != ASCII_set)			      \
    {									      \
      if (FROM_DIRECTION)						      \
	{								      \
	  /* It's easy, we don't have to emit anything, we just reset the     \
	     state for the input.  */					      \
	  data->__statep->__count &= 7;					      \
	  data->__statep->__count |= ASCII_set;				      \
	}								      \
      else								      \
	{								      \
	  /* We are not in the initial state.  To switch back we have	      \
	     to write out the buffered character and/or emit the sequence     \
	     `Esc ( B'.  */						      \
	  size_t need =							      \
	    (data->__statep->__count >> 6				      \
	     ? (data->__statep->__count >> 22 ? 3 : 0) + 2		      \
	     : 0)							      \
	    + ((data->__statep->__count & CURRENT_SEL_MASK) != ASCII_set      \
	       ? 3 : 0);						      \
									      \
	  if (__glibc_unlikely (outbuf + need > outend))		      \
	    /* We don't have enough room in the output buffer.  */	      \
	    status = __GCONV_FULL_OUTPUT;				      \
	  else								      \
	    {								      \
	      if (data->__statep->__count >> 6)				      \
		{							      \
		  uint32_t lasttwo = data->__statep->__count >> 6;	      \
									      \
		  if (lasttwo >> 16)					      \
		    {							      \
		      /* Write out the shift sequence before the last	      \
			 character.  */					      \
		      assert ((data->__statep->__count & CURRENT_SEL_MASK)    \
			      == JISX0208_1983_set);			      \
		      *outbuf++ = ESC;					      \
		      *outbuf++ = '$';					      \
		      *outbuf++ = 'B';					      \
		    }							      \
		  /* Write out the last character.  */			      \
		  *outbuf++ = (lasttwo >> 8) & 0xff;			      \
		  *outbuf++ = lasttwo & 0xff;				      \
		}							      \
	      if ((data->__statep->__count & CURRENT_SEL_MASK) != ASCII_set)  \
		{							      \
		  /* Write out the shift sequence.  */			      \
		  *outbuf++ = ESC;					      \
		  *outbuf++ = '(';					      \
		  *outbuf++ = 'B';					      \
		}							      \
	      data->__statep->__count &= 7;				      \
	      data->__statep->__count |= ASCII_set;			      \
	    }								      \
	}								      \
    }


/* Since we might have to reset input pointer we must be able to save
   and retore the state.  */
#define SAVE_RESET_STATE(Save) \
  if (Save)								      \
    saved_state = *statep;						      \
  else									      \
    *statep = saved_state


/* First define the conversion function from ISO-2022-JP-3 to UCS-4.  */
#define MIN_NEEDED_INPUT	FROM_LOOP_MIN_NEEDED_FROM
#define MAX_NEEDED_INPUT	FROM_LOOP_MAX_NEEDED_FROM
#define MIN_NEEDED_OUTPUT	FROM_LOOP_MIN_NEEDED_TO
#define MAX_NEEDED_OUTPUT	FROM_LOOP_MAX_NEEDED_TO
#define LOOPFCT			FROM_LOOP
#define BODY \
  {									      \
    uint32_t ch = *inptr;						      \
									      \
    /* Recognize escape sequences.  */					      \
    if (__glibc_unlikely (ch == ESC))					      \
      {									      \
	/* We now must be prepared to read two to three more bytes.	      \
	   If we have a match in the first byte but then the input buffer     \
	   ends we terminate with an error since we must not risk missing     \
	   an escape sequence just because it is not entirely in the	      \
	   current input buffer.  */					      \
	if (__builtin_expect (inptr + 2 >= inend, 0)			      \
	    || (inptr[1] == '$' && inptr[2] == '('			      \
		&& __builtin_expect (inptr + 3 >= inend, 0)))		      \
	  {								      \
	    /* Not enough input available.  */				      \
	    result = __GCONV_INCOMPLETE_INPUT;				      \
	    break;							      \
	  }								      \
									      \
	if (inptr[1] == '(')						      \
	  {								      \
	    if (inptr[2] == 'B')					      \
	      {								      \
		/* ASCII selected.  */					      \
		set = ASCII_set;					      \
		inptr += 3;						      \
		continue;						      \
	      }								      \
	    else if (inptr[2] == 'J')					      \
	      {								      \
		/* JIS X 0201 selected.  */				      \
		set = JISX0201_Roman_set;				      \
		inptr += 3;						      \
		continue;						      \
	      }								      \
	    else if (inptr[2] == 'I')					      \
	      {								      \
		/* JIS X 0201 selected.  */				      \
		set = JISX0201_Kana_set;				      \
		inptr += 3;						      \
		continue;						      \
	      }								      \
	  }								      \
	else if (inptr[1] == '$')					      \
	  {								      \
	    if (inptr[2] == '@')					      \
	      {								      \
		/* JIS X 0208-1978 selected.  */			      \
		set = JISX0208_1978_set;				      \
		inptr += 3;						      \
		continue;						      \
	      }								      \
	    else if (inptr[2] == 'B')					      \
	      {								      \
		/* JIS X 0208-1983 selected.  */			      \
		set = JISX0208_1983_set;				      \
		inptr += 3;						      \
		continue;						      \
	      }								      \
	    else if (inptr[2] == '(')					      \
	      {								      \
		if (inptr[3] == 'O' || inptr[3] == 'Q')			      \
		  {							      \
		    /* JIS X 0213 plane 1 selected.  */			      \
		    /* In this direction we don't need to distinguish the     \
		       versions from 2000 and 2004. */			      \
		    set = JISX0213_1_2004_set;				      \
		    inptr += 4;						      \
		    continue;						      \
		  }							      \
		else if (inptr[3] == 'P')				      \
		  {							      \
		    /* JIS X 0213 plane 2 selected.  */			      \
		    set = JISX0213_2_set;				      \
		    inptr += 4;						      \
		    continue;						      \
		  }							      \
	      }								      \
	  }								      \
      }									      \
									      \
    if (ch >= 0x80)							      \
      {									      \
	STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \
      }									      \
    else if (set == ASCII_set || (ch < 0x21 || ch == 0x7f))		      \
      /* Almost done, just advance the input pointer.  */		      \
      ++inptr;								      \
    else if (set == JISX0201_Roman_set)					      \
      {									      \
	/* Use the JIS X 0201 table.  */				      \
	ch = jisx0201_to_ucs4 (ch);					      \
	if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR))		      \
	  {								      \
	    STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \
	  }								      \
	++inptr;							      \
      }									      \
    else if (set == JISX0201_Kana_set)					      \
      {									      \
	/* Use the JIS X 0201 table.  */				      \
	ch = jisx0201_to_ucs4 (ch + 0x80);				      \
	if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR))		      \
	  {								      \
	    STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \
	  }								      \
	++inptr;							      \
      }									      \
    else if (set == JISX0208_1978_set || set == JISX0208_1983_set)	      \
      {									      \
	/* XXX I don't have the tables for these two old variants of	      \
	   JIS X 0208.  Therefore I'm using the tables for JIS X	      \
	   0208-1990.  If somebody has problems with this please	      \
	   provide the appropriate tables.  */				      \
	ch = jisx0208_to_ucs4 (&inptr, inend - inptr, 0);		      \
									      \
	if (__glibc_unlikely (ch == 0))					      \
	  {								      \
	    result = __GCONV_INCOMPLETE_INPUT;				      \
	    break;							      \
	  }								      \
	else if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR))		      \
	  {								      \
	    STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \
	  }								      \
      }									      \
    else /* (set == JISX0213_1_2004_set || set == JISX0213_2_set) */	      \
      {									      \
	if (__glibc_unlikely (inptr + 1 >= inend))			      \
	  {								      \
	    result = __GCONV_INCOMPLETE_INPUT;				      \
	    break;							      \
	  }								      \
									      \
	ch = jisx0213_to_ucs4 (						      \
	       ((JISX0213_1_2004_set - set + (1 << 3)) << 5) + ch,	      \
	       inptr[1]);						      \
	if (ch == 0)							      \
	  STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \
									      \
	if (ch < 0x80)							      \
	  {								      \
	    /* It's a combining character.  */				      \
	    uint32_t u1 = __jisx0213_to_ucs_combining[ch - 1][0];	      \
	    uint32_t u2 = __jisx0213_to_ucs_combining[ch - 1][1];	      \
									      \
	    /* See whether we have room for two characters.  */		      \
	    if (outptr + 8 <= outend)					      \
	      {								      \
		inptr += 2;						      \
		put32 (outptr, u1);					      \
		outptr += 4;						      \
		put32 (outptr, u2);					      \
		outptr += 4;						      \
		continue;						      \
	      }								      \
	    else							      \
	      {								      \
		result = __GCONV_FULL_OUTPUT;				      \
		break;							      \
	      }								      \
	  }								      \
									      \
	inptr += 2;							      \
      }									      \
									      \
    put32 (outptr, ch);							      \
    outptr += 4;							      \
  }
#define LOOP_NEED_FLAGS
#define EXTRA_LOOP_DECLS	, int *statep
#define INIT_PARAMS		int set = *statep
#define UPDATE_PARAMS		*statep = set
#include <iconv/loop.c>


/* Next, define the other direction, from UCS-4 to ISO-2022-JP-3.  */

/* Composition tables for each of the relevant combining characters.  */
static const struct
{
  uint16_t base;
  uint16_t composed;
} comp_table_data[] =
{
#define COMP_TABLE_IDX_02E5 0
#define COMP_TABLE_LEN_02E5 1
  { 0x2b64, 0x2b65 }, /* 0x12B65 = 0x12B64 U+02E5 */
#define COMP_TABLE_IDX_02E9 (COMP_TABLE_IDX_02E5 + COMP_TABLE_LEN_02E5)
#define COMP_TABLE_LEN_02E9 1
  { 0x2b60, 0x2b66 }, /* 0x12B66 = 0x12B60 U+02E9 */
#define COMP_TABLE_IDX_0300 (COMP_TABLE_IDX_02E9 + COMP_TABLE_LEN_02E9)
#define COMP_TABLE_LEN_0300 5
  { 0x295c, 0x2b44 }, /* 0x12B44 = 0x1295C U+0300 */
  { 0x2b38, 0x2b48 }, /* 0x12B48 = 0x12B38 U+0300 */
  { 0x2b37, 0x2b4a }, /* 0x12B4A = 0x12B37 U+0300 */
  { 0x2b30, 0x2b4c }, /* 0x12B4C = 0x12B30 U+0300 */
  { 0x2b43, 0x2b4e }, /* 0x12B4E = 0x12B43 U+0300 */
#define COMP_TABLE_IDX_0301 (COMP_TABLE_IDX_0300 + COMP_TABLE_LEN_0300)
#define COMP_TABLE_LEN_0301 4
  { 0x2b38, 0x2b49 }, /* 0x12B49 = 0x12B38 U+0301 */
  { 0x2b37, 0x2b4b }, /* 0x12B4B = 0x12B37 U+0301 */
  { 0x2b30, 0x2b4d }, /* 0x12B4D = 0x12B30 U+0301 */
  { 0x2b43, 0x2b4f }, /* 0x12B4F = 0x12B43 U+0301 */
#define COMP_TABLE_IDX_309A (COMP_TABLE_IDX_0301 + COMP_TABLE_LEN_0301)
#define COMP_TABLE_LEN_309A 14
  { 0x242b, 0x2477 }, /* 0x12477 = 0x1242B U+309A */
  { 0x242d, 0x2478 }, /* 0x12478 = 0x1242D U+309A */
  { 0x242f, 0x2479 }, /* 0x12479 = 0x1242F U+309A */
  { 0x2431, 0x247a }, /* 0x1247A = 0x12431 U+309A */
  { 0x2433, 0x247b }, /* 0x1247B = 0x12433 U+309A */
  { 0x252b, 0x2577 }, /* 0x12577 = 0x1252B U+309A */
  { 0x252d, 0x2578 }, /* 0x12578 = 0x1252D U+309A */
  { 0x252f, 0x2579 }, /* 0x12579 = 0x1252F U+309A */
  { 0x2531, 0x257a }, /* 0x1257A = 0x12531 U+309A */
  { 0x2533, 0x257b }, /* 0x1257B = 0x12533 U+309A */
  { 0x253b, 0x257c }, /* 0x1257C = 0x1253B U+309A */
  { 0x2544, 0x257d }, /* 0x1257D = 0x12544 U+309A */
  { 0x2548, 0x257e }, /* 0x1257E = 0x12548 U+309A */
  { 0x2675, 0x2678 }, /* 0x12678 = 0x12675 U+309A */
};

#define MIN_NEEDED_INPUT	TO_LOOP_MIN_NEEDED_FROM
#define MAX_NEEDED_INPUT	TO_LOOP_MAX_NEEDED_FROM
#define MIN_NEEDED_OUTPUT	TO_LOOP_MIN_NEEDED_TO
#define MAX_NEEDED_OUTPUT	TO_LOOP_MAX_NEEDED_TO
#define LOOPFCT			TO_LOOP
#define BODY \
  {									      \
    uint32_t ch = get32 (inptr);					      \
									      \
    if (lasttwo != 0)							      \
      {									      \
	/* Attempt to combine the last character with this one.  */	      \
	unsigned int idx;						      \
	unsigned int len;						      \
									      \
	if (ch == 0x02e5)						      \
	  idx = COMP_TABLE_IDX_02E5, len = COMP_TABLE_LEN_02E5;		      \
	else if (ch == 0x02e9)						      \
	  idx = COMP_TABLE_IDX_02E9, len = COMP_TABLE_LEN_02E9;		      \
	else if (ch == 0x0300)						      \
	  idx = COMP_TABLE_IDX_0300, len = COMP_TABLE_LEN_0300;		      \
	else if (ch == 0x0301)						      \
	  idx = COMP_TABLE_IDX_0301, len = COMP_TABLE_LEN_0301;		      \
	else if (ch == 0x309a)						      \
	  idx = COMP_TABLE_IDX_309A, len = COMP_TABLE_LEN_309A;		      \
	else								      \
	  goto not_combining;						      \
									      \
	do								      \
	  if (comp_table_data[idx].base == (uint16_t) lasttwo)		      \
	    break;							      \
	while (++idx, --len > 0);					      \
									      \
	if (len > 0)							      \
	  {								      \
	    /* Output the combined character.  */			      \
	    /* We know the combined character is in JISX0213 plane 1,	      \
	       but the buffered character may have been in JISX0208 or in     \
	       JISX0213 plane 1.  */					      \
	    size_t need =						      \
	      (lasttwo >> 16						      \
	       || (set != JISX0213_1_2000_set && set != JISX0213_1_2004_set)  \
	       ? 4 : 0);						      \
									      \
	    if (__glibc_unlikely (outptr + need + 2 > outend))		      \
	      {								      \
		result = __GCONV_FULL_OUTPUT;				      \
		break;							      \
	      }								      \
	    if (need)							      \
	      {								      \
		/* But first, output the escape sequence.  */		      \
		*outptr++ = ESC;					      \
		*outptr++ = '$';					      \
		*outptr++ = '(';					      \
		*outptr++ = 'O';					      \
		set = JISX0213_1_2000_set;				      \
	      }								      \
	    lasttwo = comp_table_data[idx].composed;			      \
	    *outptr++ = (lasttwo >> 8) & 0xff;				      \
	    *outptr++ = lasttwo & 0xff;					      \
	    lasttwo = 0;						      \
	    inptr += 4;							      \
	    continue;							      \
	  }								      \
									      \
      not_combining:							      \
	/* Output the buffered character.  */				      \
	/* We know it is in JISX0208 or in JISX0213 plane 1.  */	      \
	{								      \
	  size_t need = (lasttwo >> 16 ? 3 : 0);			      \
									      \
	  if (__glibc_unlikely (outptr + need + 2 > outend))		      \
	    {								      \
	      result = __GCONV_FULL_OUTPUT;				      \
	      break;							      \
	    }								      \
	  if (need)							      \
	    {								      \
	      /* But first, output the escape sequence.  */		      \
	      assert (set == JISX0208_1983_set);			      \
	      *outptr++ = ESC;						      \
	      *outptr++ = '$';						      \
	      *outptr++ = 'B';						      \
	    }								      \
	  *outptr++ = (lasttwo >> 8) & 0xff;				      \
	  *outptr++ = lasttwo & 0xff;					      \
	  lasttwo = 0;							      \
	  continue;							      \
	}								      \
      }									      \
									      \
    /* First see whether we can write the character using the currently	      \
       selected character set.  */					      \
    if (set == ASCII_set)						      \
      {									      \
	/* Please note that the NUL byte is *not* matched if we are not	      \
	   currently using the ASCII charset.  This is because we must	      \
	   switch to the initial state whenever a NUL byte is written.  */    \
	if (ch <= 0x7f)							      \
	  {								      \
	    *outptr++ = ch;						      \
	    inptr += 4;							      \
	    continue;							      \
	  }								      \
      }									      \
    /* ISO-2022-JP recommends to encode the newline character always in	      \
       ASCII since this allows a context-free interpretation of the	      \
       characters at the beginning of the next line.  Otherwise it would      \
       have to be known whether the last line ended using ASCII or	      \
       JIS X 0201.  */							      \
    else if (set == JISX0201_Roman_set)					      \
      {									      \
	unsigned char buf[1];						      \
	if (ucs4_to_jisx0201 (ch, buf) != __UNKNOWN_10646_CHAR		      \
	    && buf[0] > 0x20 && buf[0] < 0x80)				      \
	  {								      \
	    *outptr++ = buf[0];						      \
	    inptr += 4;							      \
	    continue;							      \
	  }								      \
      }									      \
    else if (set == JISX0201_Kana_set)					      \
      {									      \
	unsigned char buf[1];						      \
	if (ucs4_to_jisx0201 (ch, buf) != __UNKNOWN_10646_CHAR		      \
	    && buf[0] >= 0x80)						      \
	  {								      \
	    *outptr++ = buf[0] - 0x80;					      \
	    inptr += 4;							      \
	    continue;							      \
	  }								      \
      }									      \
    else if (/*set == JISX0208_1978_set || */ set == JISX0208_1983_set)	      \
      {									      \
	size_t written = ucs4_to_jisx0208 (ch, outptr, outend - outptr);      \
									      \
	if (written != __UNKNOWN_10646_CHAR)				      \
	  {								      \
	    uint32_t jch = ucs4_to_jisx0213 (ch);			      \
									      \
	    if (jch & 0x0080)						      \
	      {								      \
		/* A possible match in comp_table_data.  Buffer it.  */	      \
		lasttwo = jch & 0x7f7f;					      \
		inptr += 4;						      \
		continue;						      \
	      }								      \
	    if (__glibc_unlikely (written == 0))			      \
	      {								      \
		result = __GCONV_FULL_OUTPUT;				      \
		break;							      \
	      }								      \
	    else							      \
	      {								      \
	 	outptr += written;					      \
		inptr += 4;						      \
		continue;						      \
	     }								      \
	  }								      \
      }									      \
    else								      \
      {									      \
	/* (set == JISX0213_1_2000_set || set == JISX0213_1_2004_set	      \
	    || set == JISX0213_2_set) */				      \
	uint32_t jch = ucs4_to_jisx0213 (ch);				      \
									      \
	if (jch != 0							      \
	    && (jch & 0x8000						      \
		? set == JISX0213_2_set					      \
		: (set == JISX0213_1_2004_set				      \
		   || (set == JISX0213_1_2000_set			      \
		       && !jisx0213_added_in_2004_p (jch)))))		      \
	  {								      \
	    if (jch & 0x0080)						      \
	      {								      \
		/* A possible match in comp_table_data.  Buffer it.  */	      \
									      \
		/* We know it's a JISX 0213 plane 1 character.  */	      \
		assert ((jch & 0x8000) == 0);				      \
									      \
		lasttwo = jch & 0x7f7f;					      \
		inptr += 4;						      \
		continue;						      \
	      }								      \
									      \
	    if (__glibc_unlikely (outptr + 1 >= outend))		      \
	      {								      \
		result = __GCONV_FULL_OUTPUT;				      \
		break;							      \
	      }								      \
	    *outptr++ = (jch >> 8) & 0x7f;				      \
	    *outptr++ = jch & 0x7f;					      \
	    inptr += 4;							      \
	    continue;							      \
	  }								      \
      }									      \
									      \
    /* The attempts to use the currently selected character set failed,	      \
       either because the character requires a different character set,	      \
       or because the character is unknown.  */				      \
									      \
    if (ch <= 0x7f)							      \
      {									      \
	/* We must encode using ASCII.  First write out the escape	      \
	   sequence.  */						      \
	if (__glibc_unlikely (outptr + 3 > outend))			      \
	  {								      \
	    result = __GCONV_FULL_OUTPUT;				      \
	    break;							      \
	  }								      \
									      \
	*outptr++ = ESC;						      \
	*outptr++ = '(';						      \
	*outptr++ = 'B';						      \
	set = ASCII_set;						      \
									      \
	if (__glibc_unlikely (outptr >= outend))			      \
	  {								      \
	    result = __GCONV_FULL_OUTPUT;				      \
	    break;							      \
	  }								      \
	*outptr++ = ch;							      \
      }									      \
    else								      \
      {									      \
	unsigned char buf[2];						      \
									      \
	/* Try JIS X 0201 Roman.  */					      \
	if (ucs4_to_jisx0201 (ch, buf) != __UNKNOWN_10646_CHAR		      \
	    && buf[0] > 0x20 && buf[0] < 0x80)				      \
	  {								      \
	    if (set != JISX0201_Roman_set)				      \
	      {								      \
		if (__glibc_unlikely (outptr + 3 > outend))		      \
		  {							      \
		    result = __GCONV_FULL_OUTPUT;			      \
		    break;						      \
		  }							      \
		*outptr++ = ESC;					      \
		*outptr++ = '(';					      \
		*outptr++ = 'J';					      \
		set = JISX0201_Roman_set;				      \
	      }								      \
									      \
	    if (__glibc_unlikely (outptr >= outend))			      \
	      {								      \
		result = __GCONV_FULL_OUTPUT;				      \
		break;							      \
	      }								      \
	    *outptr++ = buf[0];						      \
	  }								      \
	else								      \
	  {								      \
	    uint32_t jch = ucs4_to_jisx0213 (ch);			      \
									      \
	    /* Try JIS X 0208.  */					      \
	    size_t written = ucs4_to_jisx0208 (ch, buf, 2);		      \
	    if (written != __UNKNOWN_10646_CHAR)			      \
	      {								      \
		if (jch & 0x0080)					      \
		  {							      \
		    /* A possible match in comp_table_data.  Buffer it.  */   \
		    lasttwo = ((set != JISX0208_1983_set ? 1 : 0) << 16)      \
			      | (jch & 0x7f7f);				      \
		    set = JISX0208_1983_set;				      \
		    inptr += 4;						      \
		    continue;						      \
		  }							      \
									      \
		if (set != JISX0208_1983_set)				      \
		  {							      \
		    if (__glibc_unlikely (outptr + 3 > outend))		      \
		      {							      \
			result = __GCONV_FULL_OUTPUT;			      \
			break;						      \
		      }							      \
		    *outptr++ = ESC;					      \
		    *outptr++ = '$';					      \
		    *outptr++ = 'B';					      \
		    set = JISX0208_1983_set;				      \
		  }							      \
									      \
		if (__glibc_unlikely (outptr + 2 > outend))		      \
		  {							      \
		    result = __GCONV_FULL_OUTPUT;			      \
		    break;						      \
		  }							      \
		*outptr++ = buf[0];					      \
		*outptr++ = buf[1];					      \
	      }								      \
	    else							      \
	      {								      \
		/* Try JIS X 0213.  */					      \
		if (jch != 0)						      \
		  {							      \
		    int new_set =					      \
		      (jch & 0x8000					      \
		       ? JISX0213_2_set					      \
		       : jisx0213_added_in_2004_p (jch)			      \
			 ? JISX0213_1_2004_set				      \
			 : JISX0213_1_2000_set);			      \
									      \
		    if (set != new_set)					      \
		      {							      \
			if (__glibc_unlikely (outptr + 4 > outend))	      \
			  {						      \
			    result = __GCONV_FULL_OUTPUT;		      \
			    break;					      \
			  }						      \
			*outptr++ = ESC;				      \
			*outptr++ = '$';				      \
			*outptr++ = '(';				      \
			*outptr++ =					      \
			  ((new_set - JISX0213_1_2000_set) >> 3) + 'O';	      \
			set = new_set;					      \
		      }							      \
									      \
		    if (jch & 0x0080)					      \
		      {							      \
			/* A possible match in comp_table_data.		      \
			   Buffer it.  */				      \
									      \
			/* We know it's a JIS X 0213 plane 1 character.  */   \
			assert ((jch & 0x8000) == 0);			      \
									      \
			lasttwo = jch & 0x7f7f;				      \
			inptr += 4;					      \
			continue;					      \
		      }							      \
									      \
		    if (__glibc_unlikely (outptr + 1 >= outend))	      \
		      {							      \
			result = __GCONV_FULL_OUTPUT;			      \
			break;						      \
		      }							      \
		    *outptr++ = (jch >> 8) & 0x7f;			      \
		    *outptr++ = jch & 0x7f;				      \
		  }							      \
		else							      \
		  {							      \
		    /* Try JIS X 0201 Katakana.  This is officially not part  \
		       of ISO-2022-JP-3.  Therefore we try it after all other \
		       attempts.  */					      \
		    if (ucs4_to_jisx0201 (ch, buf) != __UNKNOWN_10646_CHAR    \
			&& buf[0] >= 0x80)				      \
		      {							      \
			if (set != JISX0201_Kana_set)			      \
			  {						      \
			    if (__builtin_expect (outptr + 3 > outend, 0))    \
			      {						      \
				result = __GCONV_FULL_OUTPUT;		      \
				break;					      \
			      }						      \
			    *outptr++ = ESC;				      \
			    *outptr++ = '(';				      \
			    *outptr++ = 'I';				      \
			    set = JISX0201_Kana_set;			      \
			  }						      \
									      \
			if (__glibc_unlikely (outptr >= outend))	      \
			  {						      \
			    result = __GCONV_FULL_OUTPUT;		      \
			    break;					      \
			  }						      \
			*outptr++ = buf[0] - 0x80;			      \
		      }							      \
		    else						      \
		      {							      \
			UNICODE_TAG_HANDLER (ch, 4);			      \
									      \
			/* Illegal character.  */			      \
			STANDARD_TO_LOOP_ERR_HANDLER (4);		      \
		      }							      \
		  }							      \
	      }								      \
	  }								      \
      }									      \
									      \
    /* Now that we wrote the output increment the input pointer.  */	      \
    inptr += 4;								      \
  }
#define LOOP_NEED_FLAGS
#define EXTRA_LOOP_DECLS	, int *statep
#define INIT_PARAMS		int set = *statep & CURRENT_SEL_MASK;	      \
				uint32_t lasttwo = *statep >> 6
#define REINIT_PARAMS		do					      \
				  {					      \
				    set = *statep & CURRENT_SEL_MASK;	      \
				    lasttwo = *statep >> 6;		      \
				  }					      \
				while (0)
#define UPDATE_PARAMS		*statep = set | (lasttwo << 6)
#include <iconv/loop.c>


/* Now define the toplevel functions.  */
#include <iconv/skeleton.c>