ICU 60.2  60.2
utf_old.h
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1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 *
6 * Copyright (C) 2002-2012, International Business Machines
7 * Corporation and others. All Rights Reserved.
8 *
9 *******************************************************************************
10 * file name: utf_old.h
11 * encoding: UTF-8
12 * tab size: 8 (not used)
13 * indentation:4
14 *
15 * created on: 2002sep21
16 * created by: Markus W. Scherer
17 */
18 
145 #ifndef __UTF_OLD_H__
146 #define __UTF_OLD_H__
147 
159 #ifndef U_HIDE_OBSOLETE_UTF_OLD_H
160 # define U_HIDE_OBSOLETE_UTF_OLD_H 0
161 #endif
162 
163 #if !defined(U_HIDE_DEPRECATED_API) && !U_HIDE_OBSOLETE_UTF_OLD_H
164 
165 #include "unicode/utf.h"
166 #include "unicode/utf8.h"
167 #include "unicode/utf16.h"
168 
169 /* Formerly utf.h, part 1 --------------------------------------------------- */
170 
171 #ifdef U_USE_UTF_DEPRECATES
172 
179 typedef int32_t UTextOffset;
180 #endif
181 
183 #define UTF_SIZE 16
184 
191 #define UTF_SAFE
192 
193 #undef UTF_UNSAFE
194 
195 #undef UTF_STRICT
196 
211 #define UTF8_ERROR_VALUE_1 0x15
212 
218 #define UTF8_ERROR_VALUE_2 0x9f
219 
226 #define UTF_ERROR_VALUE 0xffff
227 
234 #define UTF_IS_ERROR(c) \
235  (((c)&0xfffe)==0xfffe || (c)==UTF8_ERROR_VALUE_1 || (c)==UTF8_ERROR_VALUE_2)
236 
242 #define UTF_IS_VALID(c) \
243  (UTF_IS_UNICODE_CHAR(c) && \
244  (c)!=UTF8_ERROR_VALUE_1 && (c)!=UTF8_ERROR_VALUE_2)
245 
250 #define UTF_IS_SURROGATE(uchar) (((uchar)&0xfffff800)==0xd800)
251 
257 #define UTF_IS_UNICODE_NONCHAR(c) \
258  ((c)>=0xfdd0 && \
259  ((uint32_t)(c)<=0xfdef || ((c)&0xfffe)==0xfffe) && \
260  (uint32_t)(c)<=0x10ffff)
261 
277 #define UTF_IS_UNICODE_CHAR(c) \
278  ((uint32_t)(c)<0xd800 || \
279  ((uint32_t)(c)>0xdfff && \
280  (uint32_t)(c)<=0x10ffff && \
281  !UTF_IS_UNICODE_NONCHAR(c)))
282 
283 /* Formerly utf8.h ---------------------------------------------------------- */
284 
296 #ifdef U_UTF8_IMPL
297 // No forward declaration if compiling utf_impl.cpp, which defines utf8_countTrailBytes.
298 #elif defined(U_STATIC_IMPLEMENTATION) || defined(U_COMMON_IMPLEMENTATION)
299 U_CFUNC const uint8_t utf8_countTrailBytes[];
300 #else
301 U_CFUNC U_IMPORT const uint8_t utf8_countTrailBytes[]; /* U_IMPORT2? */ /*U_IMPORT*/
302 #endif
303 
308 #define UTF8_COUNT_TRAIL_BYTES(leadByte) (utf8_countTrailBytes[(uint8_t)leadByte])
309 
314 #define UTF8_MASK_LEAD_BYTE(leadByte, countTrailBytes) ((leadByte)&=(1<<(6-(countTrailBytes)))-1)
315 
317 #define UTF8_IS_SINGLE(uchar) (((uchar)&0x80)==0)
318 
319 #define UTF8_IS_LEAD(uchar) ((uint8_t)((uchar)-0xc0)<0x3e)
320 
321 #define UTF8_IS_TRAIL(uchar) (((uchar)&0xc0)==0x80)
322 
324 #define UTF8_NEED_MULTIPLE_UCHAR(c) ((uint32_t)(c)>0x7f)
325 
339 #if 1
340 # define UTF8_CHAR_LENGTH(c) \
341  ((uint32_t)(c)<=0x7f ? 1 : \
342  ((uint32_t)(c)<=0x7ff ? 2 : \
343  ((uint32_t)((c)-0x10000)>0xfffff ? 3 : 4) \
344  ) \
345  )
346 #else
347 # define UTF8_CHAR_LENGTH(c) \
348  ((uint32_t)(c)<=0x7f ? 1 : \
349  ((uint32_t)(c)<=0x7ff ? 2 : \
350  ((uint32_t)(c)<=0xffff ? 3 : \
351  ((uint32_t)(c)<=0x10ffff ? 4 : \
352  ((uint32_t)(c)<=0x3ffffff ? 5 : \
353  ((uint32_t)(c)<=0x7fffffff ? 6 : 3) \
354  ) \
355  ) \
356  ) \
357  ) \
358  )
359 #endif
360 
362 #define UTF8_MAX_CHAR_LENGTH 4
363 
365 #define UTF8_ARRAY_SIZE(size) ((5*(size))/2)
366 
368 #define UTF8_GET_CHAR_UNSAFE(s, i, c) { \
369  int32_t _utf8_get_char_unsafe_index=(int32_t)(i); \
370  UTF8_SET_CHAR_START_UNSAFE(s, _utf8_get_char_unsafe_index); \
371  UTF8_NEXT_CHAR_UNSAFE(s, _utf8_get_char_unsafe_index, c); \
372 }
373 
375 #define UTF8_GET_CHAR_SAFE(s, start, i, length, c, strict) { \
376  int32_t _utf8_get_char_safe_index=(int32_t)(i); \
377  UTF8_SET_CHAR_START_SAFE(s, start, _utf8_get_char_safe_index); \
378  UTF8_NEXT_CHAR_SAFE(s, _utf8_get_char_safe_index, length, c, strict); \
379 }
380 
382 #define UTF8_NEXT_CHAR_UNSAFE(s, i, c) { \
383  (c)=(s)[(i)++]; \
384  if((uint8_t)((c)-0xc0)<0x35) { \
385  uint8_t __count=UTF8_COUNT_TRAIL_BYTES(c); \
386  UTF8_MASK_LEAD_BYTE(c, __count); \
387  switch(__count) { \
388  /* each following branch falls through to the next one */ \
389  case 3: \
390  (c)=((c)<<6)|((s)[(i)++]&0x3f); \
391  case 2: \
392  (c)=((c)<<6)|((s)[(i)++]&0x3f); \
393  case 1: \
394  (c)=((c)<<6)|((s)[(i)++]&0x3f); \
395  /* no other branches to optimize switch() */ \
396  break; \
397  } \
398  } \
399 }
400 
402 #define UTF8_APPEND_CHAR_UNSAFE(s, i, c) { \
403  if((uint32_t)(c)<=0x7f) { \
404  (s)[(i)++]=(uint8_t)(c); \
405  } else { \
406  if((uint32_t)(c)<=0x7ff) { \
407  (s)[(i)++]=(uint8_t)(((c)>>6)|0xc0); \
408  } else { \
409  if((uint32_t)(c)<=0xffff) { \
410  (s)[(i)++]=(uint8_t)(((c)>>12)|0xe0); \
411  } else { \
412  (s)[(i)++]=(uint8_t)(((c)>>18)|0xf0); \
413  (s)[(i)++]=(uint8_t)((((c)>>12)&0x3f)|0x80); \
414  } \
415  (s)[(i)++]=(uint8_t)((((c)>>6)&0x3f)|0x80); \
416  } \
417  (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \
418  } \
419 }
420 
422 #define UTF8_FWD_1_UNSAFE(s, i) { \
423  (i)+=1+UTF8_COUNT_TRAIL_BYTES((s)[i]); \
424 }
425 
427 #define UTF8_FWD_N_UNSAFE(s, i, n) { \
428  int32_t __N=(n); \
429  while(__N>0) { \
430  UTF8_FWD_1_UNSAFE(s, i); \
431  --__N; \
432  } \
433 }
434 
436 #define UTF8_SET_CHAR_START_UNSAFE(s, i) { \
437  while(UTF8_IS_TRAIL((s)[i])) { --(i); } \
438 }
439 
441 #define UTF8_NEXT_CHAR_SAFE(s, i, length, c, strict) { \
442  (c)=(s)[(i)++]; \
443  if((c)>=0x80) { \
444  if(UTF8_IS_LEAD(c)) { \
445  (c)=utf8_nextCharSafeBody(s, &(i), (int32_t)(length), c, strict); \
446  } else { \
447  (c)=UTF8_ERROR_VALUE_1; \
448  } \
449  } \
450 }
451 
453 #define UTF8_APPEND_CHAR_SAFE(s, i, length, c) { \
454  if((uint32_t)(c)<=0x7f) { \
455  (s)[(i)++]=(uint8_t)(c); \
456  } else { \
457  (i)=utf8_appendCharSafeBody(s, (int32_t)(i), (int32_t)(length), c, NULL); \
458  } \
459 }
460 
462 #define UTF8_FWD_1_SAFE(s, i, length) U8_FWD_1(s, i, length)
463 
465 #define UTF8_FWD_N_SAFE(s, i, length, n) U8_FWD_N(s, i, length, n)
466 
468 #define UTF8_SET_CHAR_START_SAFE(s, start, i) U8_SET_CP_START(s, start, i)
469 
471 #define UTF8_PREV_CHAR_UNSAFE(s, i, c) { \
472  (c)=(s)[--(i)]; \
473  if(UTF8_IS_TRAIL(c)) { \
474  uint8_t __b, __count=1, __shift=6; \
475 \
476  /* c is a trail byte */ \
477  (c)&=0x3f; \
478  for(;;) { \
479  __b=(s)[--(i)]; \
480  if(__b>=0xc0) { \
481  UTF8_MASK_LEAD_BYTE(__b, __count); \
482  (c)|=(UChar32)__b<<__shift; \
483  break; \
484  } else { \
485  (c)|=(UChar32)(__b&0x3f)<<__shift; \
486  ++__count; \
487  __shift+=6; \
488  } \
489  } \
490  } \
491 }
492 
494 #define UTF8_BACK_1_UNSAFE(s, i) { \
495  while(UTF8_IS_TRAIL((s)[--(i)])) {} \
496 }
497 
499 #define UTF8_BACK_N_UNSAFE(s, i, n) { \
500  int32_t __N=(n); \
501  while(__N>0) { \
502  UTF8_BACK_1_UNSAFE(s, i); \
503  --__N; \
504  } \
505 }
506 
508 #define UTF8_SET_CHAR_LIMIT_UNSAFE(s, i) { \
509  UTF8_BACK_1_UNSAFE(s, i); \
510  UTF8_FWD_1_UNSAFE(s, i); \
511 }
512 
514 #define UTF8_PREV_CHAR_SAFE(s, start, i, c, strict) { \
515  (c)=(s)[--(i)]; \
516  if((c)>=0x80) { \
517  if((c)<=0xbf) { \
518  (c)=utf8_prevCharSafeBody(s, start, &(i), c, strict); \
519  } else { \
520  (c)=UTF8_ERROR_VALUE_1; \
521  } \
522  } \
523 }
524 
526 #define UTF8_BACK_1_SAFE(s, start, i) U8_BACK_1(s, start, i)
527 
529 #define UTF8_BACK_N_SAFE(s, start, i, n) U8_BACK_N(s, start, i, n)
530 
532 #define UTF8_SET_CHAR_LIMIT_SAFE(s, start, i, length) U8_SET_CP_LIMIT(s, start, i, length)
533 
534 /* Formerly utf16.h --------------------------------------------------------- */
535 
537 #define UTF_IS_FIRST_SURROGATE(uchar) (((uchar)&0xfffffc00)==0xd800)
538 
540 #define UTF_IS_SECOND_SURROGATE(uchar) (((uchar)&0xfffffc00)==0xdc00)
541 
543 #define UTF_IS_SURROGATE_FIRST(c) (((c)&0x400)==0)
544 
546 #define UTF_SURROGATE_OFFSET ((0xd800<<10UL)+0xdc00-0x10000)
547 
549 #define UTF16_GET_PAIR_VALUE(first, second) \
550  (((first)<<10UL)+(second)-UTF_SURROGATE_OFFSET)
551 
553 #define UTF_FIRST_SURROGATE(supplementary) (UChar)(((supplementary)>>10)+0xd7c0)
554 
556 #define UTF_SECOND_SURROGATE(supplementary) (UChar)(((supplementary)&0x3ff)|0xdc00)
557 
559 #define UTF16_LEAD(supplementary) UTF_FIRST_SURROGATE(supplementary)
560 
562 #define UTF16_TRAIL(supplementary) UTF_SECOND_SURROGATE(supplementary)
563 
565 #define UTF16_IS_SINGLE(uchar) !UTF_IS_SURROGATE(uchar)
566 
568 #define UTF16_IS_LEAD(uchar) UTF_IS_FIRST_SURROGATE(uchar)
569 
571 #define UTF16_IS_TRAIL(uchar) UTF_IS_SECOND_SURROGATE(uchar)
572 
574 #define UTF16_NEED_MULTIPLE_UCHAR(c) ((uint32_t)(c)>0xffff)
575 
577 #define UTF16_CHAR_LENGTH(c) ((uint32_t)(c)<=0xffff ? 1 : 2)
578 
580 #define UTF16_MAX_CHAR_LENGTH 2
581 
583 #define UTF16_ARRAY_SIZE(size) (size)
584 
596 #define UTF16_GET_CHAR_UNSAFE(s, i, c) { \
597  (c)=(s)[i]; \
598  if(UTF_IS_SURROGATE(c)) { \
599  if(UTF_IS_SURROGATE_FIRST(c)) { \
600  (c)=UTF16_GET_PAIR_VALUE((c), (s)[(i)+1]); \
601  } else { \
602  (c)=UTF16_GET_PAIR_VALUE((s)[(i)-1], (c)); \
603  } \
604  } \
605 }
606 
608 #define UTF16_GET_CHAR_SAFE(s, start, i, length, c, strict) { \
609  (c)=(s)[i]; \
610  if(UTF_IS_SURROGATE(c)) { \
611  uint16_t __c2; \
612  if(UTF_IS_SURROGATE_FIRST(c)) { \
613  if((i)+1<(length) && UTF_IS_SECOND_SURROGATE(__c2=(s)[(i)+1])) { \
614  (c)=UTF16_GET_PAIR_VALUE((c), __c2); \
615  /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
616  } else if(strict) {\
617  /* unmatched first surrogate */ \
618  (c)=UTF_ERROR_VALUE; \
619  } \
620  } else { \
621  if((i)-1>=(start) && UTF_IS_FIRST_SURROGATE(__c2=(s)[(i)-1])) { \
622  (c)=UTF16_GET_PAIR_VALUE(__c2, (c)); \
623  /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
624  } else if(strict) {\
625  /* unmatched second surrogate */ \
626  (c)=UTF_ERROR_VALUE; \
627  } \
628  } \
629  } else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \
630  (c)=UTF_ERROR_VALUE; \
631  } \
632 }
633 
635 #define UTF16_NEXT_CHAR_UNSAFE(s, i, c) { \
636  (c)=(s)[(i)++]; \
637  if(UTF_IS_FIRST_SURROGATE(c)) { \
638  (c)=UTF16_GET_PAIR_VALUE((c), (s)[(i)++]); \
639  } \
640 }
641 
643 #define UTF16_APPEND_CHAR_UNSAFE(s, i, c) { \
644  if((uint32_t)(c)<=0xffff) { \
645  (s)[(i)++]=(uint16_t)(c); \
646  } else { \
647  (s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \
648  (s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \
649  } \
650 }
651 
653 #define UTF16_FWD_1_UNSAFE(s, i) { \
654  if(UTF_IS_FIRST_SURROGATE((s)[(i)++])) { \
655  ++(i); \
656  } \
657 }
658 
660 #define UTF16_FWD_N_UNSAFE(s, i, n) { \
661  int32_t __N=(n); \
662  while(__N>0) { \
663  UTF16_FWD_1_UNSAFE(s, i); \
664  --__N; \
665  } \
666 }
667 
669 #define UTF16_SET_CHAR_START_UNSAFE(s, i) { \
670  if(UTF_IS_SECOND_SURROGATE((s)[i])) { \
671  --(i); \
672  } \
673 }
674 
676 #define UTF16_NEXT_CHAR_SAFE(s, i, length, c, strict) { \
677  (c)=(s)[(i)++]; \
678  if(UTF_IS_FIRST_SURROGATE(c)) { \
679  uint16_t __c2; \
680  if((i)<(length) && UTF_IS_SECOND_SURROGATE(__c2=(s)[(i)])) { \
681  ++(i); \
682  (c)=UTF16_GET_PAIR_VALUE((c), __c2); \
683  /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
684  } else if(strict) {\
685  /* unmatched first surrogate */ \
686  (c)=UTF_ERROR_VALUE; \
687  } \
688  } else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \
689  /* unmatched second surrogate or other non-character */ \
690  (c)=UTF_ERROR_VALUE; \
691  } \
692 }
693 
695 #define UTF16_APPEND_CHAR_SAFE(s, i, length, c) { \
696  if((uint32_t)(c)<=0xffff) { \
697  (s)[(i)++]=(uint16_t)(c); \
698  } else if((uint32_t)(c)<=0x10ffff) { \
699  if((i)+1<(length)) { \
700  (s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \
701  (s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \
702  } else /* not enough space */ { \
703  (s)[(i)++]=UTF_ERROR_VALUE; \
704  } \
705  } else /* c>0x10ffff, write error value */ { \
706  (s)[(i)++]=UTF_ERROR_VALUE; \
707  } \
708 }
709 
711 #define UTF16_FWD_1_SAFE(s, i, length) U16_FWD_1(s, i, length)
712 
714 #define UTF16_FWD_N_SAFE(s, i, length, n) U16_FWD_N(s, i, length, n)
715 
717 #define UTF16_SET_CHAR_START_SAFE(s, start, i) U16_SET_CP_START(s, start, i)
718 
720 #define UTF16_PREV_CHAR_UNSAFE(s, i, c) { \
721  (c)=(s)[--(i)]; \
722  if(UTF_IS_SECOND_SURROGATE(c)) { \
723  (c)=UTF16_GET_PAIR_VALUE((s)[--(i)], (c)); \
724  } \
725 }
726 
728 #define UTF16_BACK_1_UNSAFE(s, i) { \
729  if(UTF_IS_SECOND_SURROGATE((s)[--(i)])) { \
730  --(i); \
731  } \
732 }
733 
735 #define UTF16_BACK_N_UNSAFE(s, i, n) { \
736  int32_t __N=(n); \
737  while(__N>0) { \
738  UTF16_BACK_1_UNSAFE(s, i); \
739  --__N; \
740  } \
741 }
742 
744 #define UTF16_SET_CHAR_LIMIT_UNSAFE(s, i) { \
745  if(UTF_IS_FIRST_SURROGATE((s)[(i)-1])) { \
746  ++(i); \
747  } \
748 }
749 
751 #define UTF16_PREV_CHAR_SAFE(s, start, i, c, strict) { \
752  (c)=(s)[--(i)]; \
753  if(UTF_IS_SECOND_SURROGATE(c)) { \
754  uint16_t __c2; \
755  if((i)>(start) && UTF_IS_FIRST_SURROGATE(__c2=(s)[(i)-1])) { \
756  --(i); \
757  (c)=UTF16_GET_PAIR_VALUE(__c2, (c)); \
758  /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
759  } else if(strict) {\
760  /* unmatched second surrogate */ \
761  (c)=UTF_ERROR_VALUE; \
762  } \
763  } else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \
764  /* unmatched first surrogate or other non-character */ \
765  (c)=UTF_ERROR_VALUE; \
766  } \
767 }
768 
770 #define UTF16_BACK_1_SAFE(s, start, i) U16_BACK_1(s, start, i)
771 
773 #define UTF16_BACK_N_SAFE(s, start, i, n) U16_BACK_N(s, start, i, n)
774 
776 #define UTF16_SET_CHAR_LIMIT_SAFE(s, start, i, length) U16_SET_CP_LIMIT(s, start, i, length)
777 
778 /* Formerly utf32.h --------------------------------------------------------- */
779 
780 /*
781 * Old documentation:
782 *
783 * This file defines macros to deal with UTF-32 code units and code points.
784 * Signatures and semantics are the same as for the similarly named macros
785 * in utf16.h.
786 * utf32.h is included by utf.h after unicode/umachine.h</p>
787 * and some common definitions.
788 * <p><b>Usage:</b> ICU coding guidelines for if() statements should be followed when using these macros.
789 * Compound statements (curly braces {}) must be used for if-else-while...
790 * bodies and all macro statements should be terminated with semicolon.</p>
791 */
792 
793 /* internal definitions ----------------------------------------------------- */
794 
796 #define UTF32_IS_SAFE(c, strict) \
797  (!(strict) ? \
798  (uint32_t)(c)<=0x10ffff : \
799  UTF_IS_UNICODE_CHAR(c))
800 
801 /*
802  * For the semantics of all of these macros, see utf16.h.
803  * The UTF-32 versions are trivial because any code point is
804  * encoded using exactly one code unit.
805  */
806 
807 /* single-code point definitions -------------------------------------------- */
808 
809 /* classes of code unit values */
810 
812 #define UTF32_IS_SINGLE(uchar) 1
813 
814 #define UTF32_IS_LEAD(uchar) 0
815 
816 #define UTF32_IS_TRAIL(uchar) 0
817 
818 /* number of code units per code point */
819 
821 #define UTF32_NEED_MULTIPLE_UCHAR(c) 0
822 
823 #define UTF32_CHAR_LENGTH(c) 1
824 
825 #define UTF32_MAX_CHAR_LENGTH 1
826 
827 /* average number of code units compared to UTF-16 */
828 
830 #define UTF32_ARRAY_SIZE(size) (size)
831 
833 #define UTF32_GET_CHAR_UNSAFE(s, i, c) { \
834  (c)=(s)[i]; \
835 }
836 
838 #define UTF32_GET_CHAR_SAFE(s, start, i, length, c, strict) { \
839  (c)=(s)[i]; \
840  if(!UTF32_IS_SAFE(c, strict)) { \
841  (c)=UTF_ERROR_VALUE; \
842  } \
843 }
844 
845 /* definitions with forward iteration --------------------------------------- */
846 
848 #define UTF32_NEXT_CHAR_UNSAFE(s, i, c) { \
849  (c)=(s)[(i)++]; \
850 }
851 
853 #define UTF32_APPEND_CHAR_UNSAFE(s, i, c) { \
854  (s)[(i)++]=(c); \
855 }
856 
858 #define UTF32_FWD_1_UNSAFE(s, i) { \
859  ++(i); \
860 }
861 
863 #define UTF32_FWD_N_UNSAFE(s, i, n) { \
864  (i)+=(n); \
865 }
866 
868 #define UTF32_SET_CHAR_START_UNSAFE(s, i) { \
869 }
870 
872 #define UTF32_NEXT_CHAR_SAFE(s, i, length, c, strict) { \
873  (c)=(s)[(i)++]; \
874  if(!UTF32_IS_SAFE(c, strict)) { \
875  (c)=UTF_ERROR_VALUE; \
876  } \
877 }
878 
880 #define UTF32_APPEND_CHAR_SAFE(s, i, length, c) { \
881  if((uint32_t)(c)<=0x10ffff) { \
882  (s)[(i)++]=(c); \
883  } else /* c>0x10ffff, write 0xfffd */ { \
884  (s)[(i)++]=0xfffd; \
885  } \
886 }
887 
889 #define UTF32_FWD_1_SAFE(s, i, length) { \
890  ++(i); \
891 }
892 
894 #define UTF32_FWD_N_SAFE(s, i, length, n) { \
895  if(((i)+=(n))>(length)) { \
896  (i)=(length); \
897  } \
898 }
899 
901 #define UTF32_SET_CHAR_START_SAFE(s, start, i) { \
902 }
903 
904 /* definitions with backward iteration -------------------------------------- */
905 
907 #define UTF32_PREV_CHAR_UNSAFE(s, i, c) { \
908  (c)=(s)[--(i)]; \
909 }
910 
912 #define UTF32_BACK_1_UNSAFE(s, i) { \
913  --(i); \
914 }
915 
917 #define UTF32_BACK_N_UNSAFE(s, i, n) { \
918  (i)-=(n); \
919 }
920 
922 #define UTF32_SET_CHAR_LIMIT_UNSAFE(s, i) { \
923 }
924 
926 #define UTF32_PREV_CHAR_SAFE(s, start, i, c, strict) { \
927  (c)=(s)[--(i)]; \
928  if(!UTF32_IS_SAFE(c, strict)) { \
929  (c)=UTF_ERROR_VALUE; \
930  } \
931 }
932 
934 #define UTF32_BACK_1_SAFE(s, start, i) { \
935  --(i); \
936 }
937 
939 #define UTF32_BACK_N_SAFE(s, start, i, n) { \
940  (i)-=(n); \
941  if((i)<(start)) { \
942  (i)=(start); \
943  } \
944 }
945 
947 #define UTF32_SET_CHAR_LIMIT_SAFE(s, i, length) { \
948 }
949 
950 /* Formerly utf.h, part 2 --------------------------------------------------- */
951 
957 #define UTF_ARRAY_SIZE(size) UTF16_ARRAY_SIZE(size)
958 
960 #define UTF_GET_CHAR_UNSAFE(s, i, c) UTF16_GET_CHAR_UNSAFE(s, i, c)
961 
963 #define UTF_GET_CHAR_SAFE(s, start, i, length, c, strict) UTF16_GET_CHAR_SAFE(s, start, i, length, c, strict)
964 
965 
967 #define UTF_NEXT_CHAR_UNSAFE(s, i, c) UTF16_NEXT_CHAR_UNSAFE(s, i, c)
968 
970 #define UTF_NEXT_CHAR_SAFE(s, i, length, c, strict) UTF16_NEXT_CHAR_SAFE(s, i, length, c, strict)
971 
972 
974 #define UTF_APPEND_CHAR_UNSAFE(s, i, c) UTF16_APPEND_CHAR_UNSAFE(s, i, c)
975 
977 #define UTF_APPEND_CHAR_SAFE(s, i, length, c) UTF16_APPEND_CHAR_SAFE(s, i, length, c)
978 
979 
981 #define UTF_FWD_1_UNSAFE(s, i) UTF16_FWD_1_UNSAFE(s, i)
982 
984 #define UTF_FWD_1_SAFE(s, i, length) UTF16_FWD_1_SAFE(s, i, length)
985 
986 
988 #define UTF_FWD_N_UNSAFE(s, i, n) UTF16_FWD_N_UNSAFE(s, i, n)
989 
991 #define UTF_FWD_N_SAFE(s, i, length, n) UTF16_FWD_N_SAFE(s, i, length, n)
992 
993 
995 #define UTF_SET_CHAR_START_UNSAFE(s, i) UTF16_SET_CHAR_START_UNSAFE(s, i)
996 
998 #define UTF_SET_CHAR_START_SAFE(s, start, i) UTF16_SET_CHAR_START_SAFE(s, start, i)
999 
1000 
1002 #define UTF_PREV_CHAR_UNSAFE(s, i, c) UTF16_PREV_CHAR_UNSAFE(s, i, c)
1003 
1005 #define UTF_PREV_CHAR_SAFE(s, start, i, c, strict) UTF16_PREV_CHAR_SAFE(s, start, i, c, strict)
1006 
1007 
1009 #define UTF_BACK_1_UNSAFE(s, i) UTF16_BACK_1_UNSAFE(s, i)
1010 
1012 #define UTF_BACK_1_SAFE(s, start, i) UTF16_BACK_1_SAFE(s, start, i)
1013 
1014 
1016 #define UTF_BACK_N_UNSAFE(s, i, n) UTF16_BACK_N_UNSAFE(s, i, n)
1017 
1019 #define UTF_BACK_N_SAFE(s, start, i, n) UTF16_BACK_N_SAFE(s, start, i, n)
1020 
1021 
1023 #define UTF_SET_CHAR_LIMIT_UNSAFE(s, i) UTF16_SET_CHAR_LIMIT_UNSAFE(s, i)
1024 
1026 #define UTF_SET_CHAR_LIMIT_SAFE(s, start, i, length) UTF16_SET_CHAR_LIMIT_SAFE(s, start, i, length)
1027 
1028 /* Define default macros (UTF-16 "safe") ------------------------------------ */
1029 
1035 #define UTF_IS_SINGLE(uchar) U16_IS_SINGLE(uchar)
1036 
1042 #define UTF_IS_LEAD(uchar) U16_IS_LEAD(uchar)
1043 
1049 #define UTF_IS_TRAIL(uchar) U16_IS_TRAIL(uchar)
1050 
1056 #define UTF_NEED_MULTIPLE_UCHAR(c) UTF16_NEED_MULTIPLE_UCHAR(c)
1057 
1063 #define UTF_CHAR_LENGTH(c) U16_LENGTH(c)
1064 
1070 #define UTF_MAX_CHAR_LENGTH U16_MAX_LENGTH
1071 
1081 #define UTF_GET_CHAR(s, start, i, length, c) U16_GET(s, start, i, length, c)
1082 
1094 #define UTF_NEXT_CHAR(s, i, length, c) U16_NEXT(s, i, length, c)
1095 
1107 #define UTF_APPEND_CHAR(s, i, length, c) UTF16_APPEND_CHAR_SAFE(s, i, length, c)
1108 
1118 #define UTF_FWD_1(s, i, length) U16_FWD_1(s, i, length)
1119 
1129 #define UTF_FWD_N(s, i, length, n) U16_FWD_N(s, i, length, n)
1130 
1145 #define UTF_SET_CHAR_START(s, start, i) U16_SET_CP_START(s, start, i)
1146 
1158 #define UTF_PREV_CHAR(s, start, i, c) U16_PREV(s, start, i, c)
1159 
1171 #define UTF_BACK_1(s, start, i) U16_BACK_1(s, start, i)
1172 
1184 #define UTF_BACK_N(s, start, i, n) U16_BACK_N(s, start, i, n)
1185 
1200 #define UTF_SET_CHAR_LIMIT(s, start, i, length) U16_SET_CP_LIMIT(s, start, i, length)
1201 
1202 #endif // !U_HIDE_DEPRECATED_API && !U_HIDE_OBSOLETE_UTF_OLD_H
1203 
1204 #endif
#define U_IMPORT
Definition: platform.h:825
C API: 8-bit Unicode handling macros.
U_CFUNC U_IMPORT const uint8_t utf8_countTrailBytes[]
Internal array with numbers of trail bytes for any given byte used in lead byte position.
Definition: utf_old.h:301
C API: Code point macros.
#define U_CFUNC
This is used in a declaration of a library private ICU C function.
Definition: umachine.h:83
C API: 16-bit Unicode handling macros.