| blob | db1c595fd8612f7203bb6df533b9b1557284c3c7 |
1 /* Generic conversion to and from ISO 6937-2.
2 Copyright (C) 1998-2020 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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.
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.
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/>. */
20 #include <dlfcn.h>
21 #include <stdint.h>
23 /* Data taken from the WG15 tables. */
25 {
58 };
60 /* The outer array range runs from 0xc1 to 0xcf, the inner range from 0x20
61 to 0x7f. */
63 {
64 /* 0xc1 */
65 {
78 },
79 /* 0xc2 */
80 {
93 },
94 /* 0xc3 */
95 {
108 },
109 /* 0xc4 */
110 {
123 },
124 /* 0xc5 */
125 {
138 },
139 /* 0xc6 */
140 {
153 },
154 /* 0xc7 */
155 {
168 },
169 /* 0xc8 */
170 {
183 },
184 /* 0xc9 */
185 {
187 },
188 /* 0xca */
189 {
202 },
203 /* 0xcb */
204 {
217 },
218 /* 0xcc */
219 {
221 },
222 /* 0xcd */
223 {
236 },
237 /* 0xce */
238 {
251 },
252 /* 0xcf */
253 {
266 }
267 };
271 {
349 /*
350 This table does not cover the following positions:
352 0x02c7 "\xcf\x20",
353 ...
354 0x02d8 "\xc6\x20", "\xc7\x20", "\xca\x20", "\xce\x20", "\x00\x00",
355 0x02dd "\xcd\x20",
356 ...
357 0x2014 "\xd0\x00", "\x00\x00", "\x00\x00", "\x00\x00", "\xa9\x00",
358 0x2019 "\xb9\x00", "\x00\x00", "\x00\x00", "\xaa\x00", "\xba\x00",
359 0x201e "\x00\x00", "\x00\x00", "\x00\x00", "\x00\x00", "\xd4\x00",
360 0x2123 "\x00\x00", "\x00\x00", "\x00\x00", "\xe0\x00",
361 ...
362 0x215b "\xdc\x00", "\xdd\x00", "\xde\x00"
363 ...
364 0x2190 "\xac\x00", "\xad\x00", "\xae\x00", "\xaf\x00",
365 ...
366 0x266a "\xd5\x00"
368 These would blow up the table and are therefore handled specially in
369 the code.
370 */
371 };
374 /* Definitions used in the body of the `gconv' function. */
376 #define FROM_LOOP from_iso6937_2
377 #define TO_LOOP to_iso6937_2
378 #define DEFINE_INIT 1
379 #define DEFINE_FINI 1
380 #define MIN_NEEDED_FROM 1
381 #define MAX_NEEDED_FROM 2
382 #define MIN_NEEDED_TO 4
383 #define ONE_DIRECTION 0
386 /* First define the conversion function from ISO 6937-2 to UCS4. */
387 #define MIN_NEEDED_INPUT MIN_NEEDED_FROM
388 #define MAX_NEEDED_INPUT MAX_NEEDED_FROM
389 #define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
390 #define LOOPFCT FROM_LOOP
391 #define BODY \
392 { \
393 uint32_t ch = *inptr; \
394 \
395 if (__builtin_expect (ch >= 0xc1, 0) && ch <= 0xcf) \
396 { \
397 /* Composed character. First test whether the next byte \
399 int ch2; \
400 \
401 if (__glibc_unlikely (inptr + 1 >= inend)) \
402 { \
403 /* The second character is not available. Store the \
405 result = __GCONV_INCOMPLETE_INPUT; \
406 break; \
407 } \
408 \
409 ch2 = inptr[1]; \
410 \
411 if (__builtin_expect (ch2 < 0x20, 0) \
412 || __builtin_expect (ch2 >= 0x80, 0)) \
413 { \
415 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
416 } \
417 \
418 ch = to_ucs4_comb[ch - 0xc1][ch2 - 0x20]; \
419 \
420 if (__glibc_unlikely (ch == 0)) \
421 { \
423 STANDARD_FROM_LOOP_ERR_HANDLER (2); \
424 } \
425 \
426 inptr += 2; \
427 } \
428 else \
429 { \
430 ch = to_ucs4[ch]; \
431 \
433 { \
435 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
436 } \
437 ++inptr; \
438 } \
439 \
440 put32 (outptr, ch); \
441 outptr += 4; \
442 }
443 #define LOOP_NEED_FLAGS
444 #define ONEBYTE_BODY \
445 { \
446 uint32_t ch = to_ucs4[c]; \
448 return WEOF; \
449 return ch; \
450 }
451 #include <iconv/loop.c>
454 /* Next, define the other direction. */
455 #define MIN_NEEDED_INPUT MIN_NEEDED_TO
456 #define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
457 #define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
458 #define LOOPFCT TO_LOOP
459 #define BODY \
460 { \
461 char tmp[2]; \
462 uint32_t ch = get32 (inptr); \
463 const char *cp; \
464 \
465 if (__builtin_expect (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0]), \
466 0)) \
467 { \
468 switch (ch) \
469 { \
470 case 0x2c7: \
472 break; \
473 case 0x2d8 ... 0x2db: \
474 case 0x2dd: \
475 { \
477 \
478 tmp[0] = map[ch - 0x2d8]; \
480 cp = tmp; \
481 } \
482 break; \
483 case 0x2014: \
485 break; \
486 case 0x2018: \
488 break; \
489 case 0x2019: \
491 break; \
492 case 0x201c: \
494 break; \
495 case 0x201d: \
497 break; \
498 case 0x2122: \
500 break; \
501 case 0x2126: \
503 break; \
504 case 0x215b ... 0x215e: \
505 tmp[0] = 0xdc + (ch - 0x215b); \
507 cp = tmp; \
508 break; \
509 case 0x2190 ... 0x2193: \
510 tmp[0] = 0xac + (ch - 0x2190); \
512 cp = tmp; \
513 break; \
514 case 0x266a: \
516 break; \
517 default: \
518 UNICODE_TAG_HANDLER (ch, 4); \
520 cp = NULL; \
521 break; \
522 } \
523 if (cp == NULL) \
524 { \
525 STANDARD_TO_LOOP_ERR_HANDLER (4); \
526 } \
527 } \
529 { \
531 STANDARD_TO_LOOP_ERR_HANDLER (4); \
532 } \
533 else \
534 cp = from_ucs4[ch]; \
535 \
536 *outptr++ = cp[0]; \
539 { \
540 if (__glibc_unlikely (outptr >= outend)) \
541 { \
543 --outptr; \
544 result = __GCONV_FULL_OUTPUT; \
545 break; \
546 } \
547 *outptr++ = cp[1]; \
548 } \
549 \
550 inptr += 4; \
551 }
552 #define LOOP_NEED_FLAGS
553 #include <iconv/loop.c>
556 /* Now define the toplevel functions. */
557 #include <iconv/skeleton.c>