1 /* 2 ******************************************************************************* 3 * 4 * Copyright (C) 2002-2012, International Business Machines 5 * Corporation and others. All Rights Reserved. 6 * 7 ******************************************************************************* 8 * file name: utf_old.h 9 * encoding: US-ASCII 10 * tab size: 8 (not used) 11 * indentation:4 12 * 13 * created on: 2002sep21 14 * created by: Markus W. Scherer 15 */ 16 17 /** 18 * \file 19 * \brief C API: Deprecated macros for Unicode string handling 20 */ 21 22 /** 23 * 24 * The macros in utf_old.h are all deprecated and their use discouraged. 25 * Some of the design principles behind the set of UTF macros 26 * have changed or proved impractical. 27 * Almost all of the old "UTF macros" are at least renamed. 28 * If you are looking for a new equivalent to an old macro, please see the 29 * comment at the old one. 30 * 31 * Brief summary of reasons for deprecation: 32 * - Switch on UTF_SIZE (selection of UTF-8/16/32 default string processing) 33 * was impractical. 34 * - Switch on UTF_SAFE etc. (selection of unsafe/safe/strict default string processing) 35 * was of little use and impractical. 36 * - Whole classes of macros became obsolete outside of the UTF_SIZE/UTF_SAFE 37 * selection framework: UTF32_ macros (all trivial) 38 * and UTF_ default and intermediate macros (all aliases). 39 * - The selection framework also caused many macro aliases. 40 * - Change in Unicode standard: "irregular" sequences (3.0) became illegal (3.2). 41 * - Change of language in Unicode standard: 42 * Growing distinction between internal x-bit Unicode strings and external UTF-x 43 * forms, with the former more lenient. 44 * Suggests renaming of UTF16_ macros to U16_. 45 * - The prefix "UTF_" without a width number confused some users. 46 * - "Safe" append macros needed the addition of an error indicator output. 47 * - "Safe" UTF-8 macros used legitimate (if rarely used) code point values 48 * to indicate error conditions. 49 * - The use of the "_CHAR" infix for code point operations confused some users. 50 * 51 * More details: 52 * 53 * Until ICU 2.2, utf.h theoretically allowed to choose among UTF-8/16/32 54 * for string processing, and among unsafe/safe/strict default macros for that. 55 * 56 * It proved nearly impossible to write non-trivial, high-performance code 57 * that is UTF-generic. 58 * Unsafe default macros would be dangerous for default string processing, 59 * and the main reason for the "strict" versions disappeared: 60 * Between Unicode 3.0 and 3.2 all "irregular" UTF-8 sequences became illegal. 61 * The only other conditions that "strict" checked for were non-characters, 62 * which are valid during processing. Only during text input/output should they 63 * be checked, and at that time other well-formedness checks may be 64 * necessary or useful as well. 65 * This can still be done by using U16_NEXT and U_IS_UNICODE_NONCHAR 66 * or U_IS_UNICODE_CHAR. 67 * 68 * The old UTF8_..._SAFE macros also used some normal Unicode code points 69 * to indicate malformed sequences. 70 * The new UTF8_ macros without suffix use negative values instead. 71 * 72 * The entire contents of utf32.h was moved here without replacement 73 * because all those macros were trivial and 74 * were meaningful only in the framework of choosing the UTF size. 75 * 76 * See Jitterbug 2150 and its discussion on the ICU mailing list 77 * in September 2002. 78 * 79 * <hr> 80 * 81 * <em>Obsolete part</em> of pre-ICU 2.4 utf.h file documentation: 82 * 83 * <p>The original concept for these files was for ICU to allow 84 * in principle to set which UTF (UTF-8/16/32) is used internally 85 * by defining UTF_SIZE to either 8, 16, or 32. utf.h would then define the UChar type 86 * accordingly. UTF-16 was the default.</p> 87 * 88 * <p>This concept has been abandoned. 89 * A lot of the ICU source code assumes UChar strings are in UTF-16. 90 * This is especially true for low-level code like 91 * conversion, normalization, and collation. 92 * The utf.h header enforces the default of UTF-16. 93 * The UTF-8 and UTF-32 macros remain for now for completeness and backward compatibility.</p> 94 * 95 * <p>Accordingly, utf.h defines UChar to be an unsigned 16-bit integer. If this matches wchar_t, then 96 * UChar is defined to be exactly wchar_t, otherwise uint16_t.</p> 97 * 98 * <p>UChar32 is defined to be a signed 32-bit integer (int32_t), large enough for a 21-bit 99 * Unicode code point (Unicode scalar value, 0..0x10ffff). 100 * Before ICU 2.4, the definition of UChar32 was similarly platform-dependent as 101 * the definition of UChar. For details see the documentation for UChar32 itself.</p> 102 * 103 * <p>utf.h also defines a number of C macros for handling single Unicode code points and 104 * for using UTF Unicode strings. It includes utf8.h, utf16.h, and utf32.h for the actual 105 * implementations of those macros and then aliases one set of them (for UTF-16) for general use. 106 * The UTF-specific macros have the UTF size in the macro name prefixes (UTF16_...), while 107 * the general alias macros always begin with UTF_...</p> 108 * 109 * <p>Many string operations can be done with or without error checking. 110 * Where such a distinction is useful, there are two versions of the macros, "unsafe" and "safe" 111 * ones with ..._UNSAFE and ..._SAFE suffixes. The unsafe macros are fast but may cause 112 * program failures if the strings are not well-formed. The safe macros have an additional, boolean 113 * parameter "strict". If strict is FALSE, then only illegal sequences are detected. 114 * Otherwise, irregular sequences and non-characters are detected as well (like single surrogates). 115 * Safe macros return special error code points for illegal/irregular sequences: 116 * Typically, U+ffff, or values that would result in a code unit sequence of the same length 117 * as the erroneous input sequence.<br> 118 * Note that _UNSAFE macros have fewer parameters: They do not have the strictness parameter, and 119 * they do not have start/length parameters for boundary checking.</p> 120 * 121 * <p>Here, the macros are aliased in two steps: 122 * In the first step, the UTF-specific macros with UTF16_ prefix and _UNSAFE and _SAFE suffixes are 123 * aliased according to the UTF_SIZE to macros with UTF_ prefix and the same suffixes and signatures. 124 * Then, in a second step, the default, general alias macros are set to use either the unsafe or 125 * the safe/not strict (default) or the safe/strict macro; 126 * these general macros do not have a strictness parameter.</p> 127 * 128 * <p>It is possible to change the default choice for the general alias macros to be unsafe, safe/not strict or safe/strict. 129 * The default is safe/not strict. It is not recommended to select the unsafe macros as the basis for 130 * Unicode string handling in ICU! To select this, define UTF_SAFE, UTF_STRICT, or UTF_UNSAFE.</p> 131 * 132 * <p>For general use, one should use the default, general macros with UTF_ prefix and no _SAFE/_UNSAFE suffix. 133 * Only in some cases it may be necessary to control the choice of macro directly and use a less generic alias. 134 * For example, if it can be assumed that a string is well-formed and the index will stay within the bounds, 135 * then the _UNSAFE version may be used. 136 * If a UTF-8 string is to be processed, then the macros with UTF8_ prefixes need to be used.</p> 137 * 138 * <hr> 139 * 140 * @deprecated ICU 2.4. Use the macros in utf.h, utf16.h, utf8.h instead. 141 */ 142 143 #ifndef __UTF_OLD_H__ 144 #define __UTF_OLD_H__ 145 146 #ifndef U_HIDE_DEPRECATED_API 147 148 #include "unicode/utf.h" 149 #include "unicode/utf8.h" 150 #include "unicode/utf16.h" 151 152 /* Formerly utf.h, part 1 --------------------------------------------------- */ 153 154 #ifdef U_USE_UTF_DEPRECATES 155 /** 156 * Unicode string and array offset and index type. 157 * ICU always counts Unicode code units (UChars) for 158 * string offsets, indexes, and lengths, not Unicode code points. 159 * 160 * @obsolete ICU 2.6. Use int32_t directly instead since this API will be removed in that release. 161 */ 162 typedef int32_t UTextOffset; 163 #endif 164 165 /** Number of bits in a Unicode string code unit - ICU uses 16-bit Unicode. @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 166 #define UTF_SIZE 16 167 168 /** 169 * The default choice for general Unicode string macros is to use the ..._SAFE macro implementations 170 * with strict=FALSE. 171 * 172 * @deprecated ICU 2.4. Obsolete, see utf_old.h. 173 */ 174 #define UTF_SAFE 175 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 176 #undef UTF_UNSAFE 177 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 178 #undef UTF_STRICT 179 180 /** 181 * UTF8_ERROR_VALUE_1 and UTF8_ERROR_VALUE_2 are special error values for UTF-8, 182 * which need 1 or 2 bytes in UTF-8: 183 * \code 184 * U+0015 = NAK = Negative Acknowledge, C0 control character 185 * U+009f = highest C1 control character 186 * \endcode 187 * 188 * These are used by UTF8_..._SAFE macros so that they can return an error value 189 * that needs the same number of code units (bytes) as were seen by 190 * a macro. They should be tested with UTF_IS_ERROR() or UTF_IS_VALID(). 191 * 192 * @deprecated ICU 2.4. Obsolete, see utf_old.h. 193 */ 194 #define UTF8_ERROR_VALUE_1 0x15 195 196 /** 197 * See documentation on UTF8_ERROR_VALUE_1 for details. 198 * 199 * @deprecated ICU 2.4. Obsolete, see utf_old.h. 200 */ 201 #define UTF8_ERROR_VALUE_2 0x9f 202 203 /** 204 * Error value for all UTFs. This code point value will be set by macros with error 205 * checking if an error is detected. 206 * 207 * @deprecated ICU 2.4. Obsolete, see utf_old.h. 208 */ 209 #define UTF_ERROR_VALUE 0xffff 210 211 /** 212 * Is a given 32-bit code an error value 213 * as returned by one of the macros for any UTF? 214 * 215 * @deprecated ICU 2.4. Obsolete, see utf_old.h. 216 */ 217 #define UTF_IS_ERROR(c) \ 218 (((c)&0xfffe)==0xfffe || (c)==UTF8_ERROR_VALUE_1 || (c)==UTF8_ERROR_VALUE_2) 219 220 /** 221 * This is a combined macro: Is c a valid Unicode value _and_ not an error code? 222 * 223 * @deprecated ICU 2.4. Obsolete, see utf_old.h. 224 */ 225 #define UTF_IS_VALID(c) \ 226 (UTF_IS_UNICODE_CHAR(c) && \ 227 (c)!=UTF8_ERROR_VALUE_1 && (c)!=UTF8_ERROR_VALUE_2) 228 229 /** 230 * Is this code unit or code point a surrogate (U+d800..U+dfff)? 231 * @deprecated ICU 2.4. Renamed to U_IS_SURROGATE and U16_IS_SURROGATE, see utf_old.h. 232 */ 233 #define UTF_IS_SURROGATE(uchar) (((uchar)&0xfffff800)==0xd800) 234 235 /** 236 * Is a given 32-bit code point a Unicode noncharacter? 237 * 238 * @deprecated ICU 2.4. Renamed to U_IS_UNICODE_NONCHAR, see utf_old.h. 239 */ 240 #define UTF_IS_UNICODE_NONCHAR(c) \ 241 ((c)>=0xfdd0 && \ 242 ((uint32_t)(c)<=0xfdef || ((c)&0xfffe)==0xfffe) && \ 243 (uint32_t)(c)<=0x10ffff) 244 245 /** 246 * Is a given 32-bit value a Unicode code point value (0..U+10ffff) 247 * that can be assigned a character? 248 * 249 * Code points that are not characters include: 250 * - single surrogate code points (U+d800..U+dfff, 2048 code points) 251 * - the last two code points on each plane (U+__fffe and U+__ffff, 34 code points) 252 * - U+fdd0..U+fdef (new with Unicode 3.1, 32 code points) 253 * - the highest Unicode code point value is U+10ffff 254 * 255 * This means that all code points below U+d800 are character code points, 256 * and that boundary is tested first for performance. 257 * 258 * @deprecated ICU 2.4. Renamed to U_IS_UNICODE_CHAR, see utf_old.h. 259 */ 260 #define UTF_IS_UNICODE_CHAR(c) \ 261 ((uint32_t)(c)<0xd800 || \ 262 ((uint32_t)(c)>0xdfff && \ 263 (uint32_t)(c)<=0x10ffff && \ 264 !UTF_IS_UNICODE_NONCHAR(c))) 265 266 /* Formerly utf8.h ---------------------------------------------------------- */ 267 268 /** 269 * Count the trail bytes for a UTF-8 lead byte. 270 * @deprecated ICU 2.4. Renamed to U8_COUNT_TRAIL_BYTES, see utf_old.h. 271 */ 272 #define UTF8_COUNT_TRAIL_BYTES(leadByte) (utf8_countTrailBytes[(uint8_t)leadByte]) 273 274 /** 275 * Mask a UTF-8 lead byte, leave only the lower bits that form part of the code point value. 276 * @deprecated ICU 2.4. Renamed to U8_MASK_LEAD_BYTE, see utf_old.h. 277 */ 278 #define UTF8_MASK_LEAD_BYTE(leadByte, countTrailBytes) ((leadByte)&=(1<<(6-(countTrailBytes)))-1) 279 280 /** Is this this code point a single code unit (byte)? @deprecated ICU 2.4. Renamed to U8_IS_SINGLE, see utf_old.h. */ 281 #define UTF8_IS_SINGLE(uchar) (((uchar)&0x80)==0) 282 /** Is this this code unit the lead code unit (byte) of a code point? @deprecated ICU 2.4. Renamed to U8_IS_LEAD, see utf_old.h. */ 283 #define UTF8_IS_LEAD(uchar) ((uint8_t)((uchar)-0xc0)<0x3e) 284 /** Is this this code unit a trailing code unit (byte) of a code point? @deprecated ICU 2.4. Renamed to U8_IS_TRAIL, see utf_old.h. */ 285 #define UTF8_IS_TRAIL(uchar) (((uchar)&0xc0)==0x80) 286 287 /** Does this scalar Unicode value need multiple code units for storage? @deprecated ICU 2.4. Use U8_LENGTH or test ((uint32_t)(c)>0x7f) instead, see utf_old.h. */ 288 #define UTF8_NEED_MULTIPLE_UCHAR(c) ((uint32_t)(c)>0x7f) 289 290 /** 291 * Given the lead character, how many bytes are taken by this code point. 292 * ICU does not deal with code points >0x10ffff 293 * unless necessary for advancing in the byte stream. 294 * 295 * These length macros take into account that for values >0x10ffff 296 * the UTF8_APPEND_CHAR_SAFE macros would write the error code point 0xffff 297 * with 3 bytes. 298 * Code point comparisons need to be in uint32_t because UChar32 299 * may be a signed type, and negative values must be recognized. 300 * 301 * @deprecated ICU 2.4. Use U8_LENGTH instead, see utf.h. 302 */ 303 #if 1 304 # define UTF8_CHAR_LENGTH(c) \ 305 ((uint32_t)(c)<=0x7f ? 1 : \ 306 ((uint32_t)(c)<=0x7ff ? 2 : \ 307 ((uint32_t)((c)-0x10000)>0xfffff ? 3 : 4) \ 308 ) \ 309 ) 310 #else 311 # define UTF8_CHAR_LENGTH(c) \ 312 ((uint32_t)(c)<=0x7f ? 1 : \ 313 ((uint32_t)(c)<=0x7ff ? 2 : \ 314 ((uint32_t)(c)<=0xffff ? 3 : \ 315 ((uint32_t)(c)<=0x10ffff ? 4 : \ 316 ((uint32_t)(c)<=0x3ffffff ? 5 : \ 317 ((uint32_t)(c)<=0x7fffffff ? 6 : 3) \ 318 ) \ 319 ) \ 320 ) \ 321 ) \ 322 ) 323 #endif 324 325 /** The maximum number of bytes per code point. @deprecated ICU 2.4. Renamed to U8_MAX_LENGTH, see utf_old.h. */ 326 #define UTF8_MAX_CHAR_LENGTH 4 327 328 /** Average number of code units compared to UTF-16. @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 329 #define UTF8_ARRAY_SIZE(size) ((5*(size))/2) 330 331 /** @deprecated ICU 2.4. Renamed to U8_GET_UNSAFE, see utf_old.h. */ 332 #define UTF8_GET_CHAR_UNSAFE(s, i, c) { \ 333 int32_t _utf8_get_char_unsafe_index=(int32_t)(i); \ 334 UTF8_SET_CHAR_START_UNSAFE(s, _utf8_get_char_unsafe_index); \ 335 UTF8_NEXT_CHAR_UNSAFE(s, _utf8_get_char_unsafe_index, c); \ 336 } 337 338 /** @deprecated ICU 2.4. Use U8_GET instead, see utf_old.h. */ 339 #define UTF8_GET_CHAR_SAFE(s, start, i, length, c, strict) { \ 340 int32_t _utf8_get_char_safe_index=(int32_t)(i); \ 341 UTF8_SET_CHAR_START_SAFE(s, start, _utf8_get_char_safe_index); \ 342 UTF8_NEXT_CHAR_SAFE(s, _utf8_get_char_safe_index, length, c, strict); \ 343 } 344 345 /** @deprecated ICU 2.4. Renamed to U8_NEXT_UNSAFE, see utf_old.h. */ 346 #define UTF8_NEXT_CHAR_UNSAFE(s, i, c) { \ 347 (c)=(s)[(i)++]; \ 348 if((uint8_t)((c)-0xc0)<0x35) { \ 349 uint8_t __count=UTF8_COUNT_TRAIL_BYTES(c); \ 350 UTF8_MASK_LEAD_BYTE(c, __count); \ 351 switch(__count) { \ 352 /* each following branch falls through to the next one */ \ 353 case 3: \ 354 (c)=((c)<<6)|((s)[(i)++]&0x3f); \ 355 case 2: \ 356 (c)=((c)<<6)|((s)[(i)++]&0x3f); \ 357 case 1: \ 358 (c)=((c)<<6)|((s)[(i)++]&0x3f); \ 359 /* no other branches to optimize switch() */ \ 360 break; \ 361 } \ 362 } \ 363 } 364 365 /** @deprecated ICU 2.4. Renamed to U8_APPEND_UNSAFE, see utf_old.h. */ 366 #define UTF8_APPEND_CHAR_UNSAFE(s, i, c) { \ 367 if((uint32_t)(c)<=0x7f) { \ 368 (s)[(i)++]=(uint8_t)(c); \ 369 } else { \ 370 if((uint32_t)(c)<=0x7ff) { \ 371 (s)[(i)++]=(uint8_t)(((c)>>6)|0xc0); \ 372 } else { \ 373 if((uint32_t)(c)<=0xffff) { \ 374 (s)[(i)++]=(uint8_t)(((c)>>12)|0xe0); \ 375 } else { \ 376 (s)[(i)++]=(uint8_t)(((c)>>18)|0xf0); \ 377 (s)[(i)++]=(uint8_t)((((c)>>12)&0x3f)|0x80); \ 378 } \ 379 (s)[(i)++]=(uint8_t)((((c)>>6)&0x3f)|0x80); \ 380 } \ 381 (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \ 382 } \ 383 } 384 385 /** @deprecated ICU 2.4. Renamed to U8_FWD_1_UNSAFE, see utf_old.h. */ 386 #define UTF8_FWD_1_UNSAFE(s, i) { \ 387 (i)+=1+UTF8_COUNT_TRAIL_BYTES((s)[i]); \ 388 } 389 390 /** @deprecated ICU 2.4. Renamed to U8_FWD_N_UNSAFE, see utf_old.h. */ 391 #define UTF8_FWD_N_UNSAFE(s, i, n) { \ 392 int32_t __N=(n); \ 393 while(__N>0) { \ 394 UTF8_FWD_1_UNSAFE(s, i); \ 395 --__N; \ 396 } \ 397 } 398 399 /** @deprecated ICU 2.4. Renamed to U8_SET_CP_START_UNSAFE, see utf_old.h. */ 400 #define UTF8_SET_CHAR_START_UNSAFE(s, i) { \ 401 while(UTF8_IS_TRAIL((s)[i])) { --(i); } \ 402 } 403 404 /** @deprecated ICU 2.4. Use U8_NEXT instead, see utf_old.h. */ 405 #define UTF8_NEXT_CHAR_SAFE(s, i, length, c, strict) { \ 406 (c)=(s)[(i)++]; \ 407 if((c)>=0x80) { \ 408 if(UTF8_IS_LEAD(c)) { \ 409 (c)=utf8_nextCharSafeBody(s, &(i), (int32_t)(length), c, strict); \ 410 } else { \ 411 (c)=UTF8_ERROR_VALUE_1; \ 412 } \ 413 } \ 414 } 415 416 /** @deprecated ICU 2.4. Use U8_APPEND instead, see utf_old.h. */ 417 #define UTF8_APPEND_CHAR_SAFE(s, i, length, c) { \ 418 if((uint32_t)(c)<=0x7f) { \ 419 (s)[(i)++]=(uint8_t)(c); \ 420 } else { \ 421 (i)=utf8_appendCharSafeBody(s, (int32_t)(i), (int32_t)(length), c, NULL); \ 422 } \ 423 } 424 425 /** @deprecated ICU 2.4. Renamed to U8_FWD_1, see utf_old.h. */ 426 #define UTF8_FWD_1_SAFE(s, i, length) U8_FWD_1(s, i, length) 427 428 /** @deprecated ICU 2.4. Renamed to U8_FWD_N, see utf_old.h. */ 429 #define UTF8_FWD_N_SAFE(s, i, length, n) U8_FWD_N(s, i, length, n) 430 431 /** @deprecated ICU 2.4. Renamed to U8_SET_CP_START, see utf_old.h. */ 432 #define UTF8_SET_CHAR_START_SAFE(s, start, i) U8_SET_CP_START(s, start, i) 433 434 /** @deprecated ICU 2.4. Renamed to U8_PREV_UNSAFE, see utf_old.h. */ 435 #define UTF8_PREV_CHAR_UNSAFE(s, i, c) { \ 436 (c)=(s)[--(i)]; \ 437 if(UTF8_IS_TRAIL(c)) { \ 438 uint8_t __b, __count=1, __shift=6; \ 439 \ 440 /* c is a trail byte */ \ 441 (c)&=0x3f; \ 442 for(;;) { \ 443 __b=(s)[--(i)]; \ 444 if(__b>=0xc0) { \ 445 UTF8_MASK_LEAD_BYTE(__b, __count); \ 446 (c)|=(UChar32)__b<<__shift; \ 447 break; \ 448 } else { \ 449 (c)|=(UChar32)(__b&0x3f)<<__shift; \ 450 ++__count; \ 451 __shift+=6; \ 452 } \ 453 } \ 454 } \ 455 } 456 457 /** @deprecated ICU 2.4. Renamed to U8_BACK_1_UNSAFE, see utf_old.h. */ 458 #define UTF8_BACK_1_UNSAFE(s, i) { \ 459 while(UTF8_IS_TRAIL((s)[--(i)])) {} \ 460 } 461 462 /** @deprecated ICU 2.4. Renamed to U8_BACK_N_UNSAFE, see utf_old.h. */ 463 #define UTF8_BACK_N_UNSAFE(s, i, n) { \ 464 int32_t __N=(n); \ 465 while(__N>0) { \ 466 UTF8_BACK_1_UNSAFE(s, i); \ 467 --__N; \ 468 } \ 469 } 470 471 /** @deprecated ICU 2.4. Renamed to U8_SET_CP_LIMIT_UNSAFE, see utf_old.h. */ 472 #define UTF8_SET_CHAR_LIMIT_UNSAFE(s, i) { \ 473 UTF8_BACK_1_UNSAFE(s, i); \ 474 UTF8_FWD_1_UNSAFE(s, i); \ 475 } 476 477 /** @deprecated ICU 2.4. Use U8_PREV instead, see utf_old.h. */ 478 #define UTF8_PREV_CHAR_SAFE(s, start, i, c, strict) { \ 479 (c)=(s)[--(i)]; \ 480 if((c)>=0x80) { \ 481 if((c)<=0xbf) { \ 482 (c)=utf8_prevCharSafeBody(s, start, &(i), c, strict); \ 483 } else { \ 484 (c)=UTF8_ERROR_VALUE_1; \ 485 } \ 486 } \ 487 } 488 489 /** @deprecated ICU 2.4. Renamed to U8_BACK_1, see utf_old.h. */ 490 #define UTF8_BACK_1_SAFE(s, start, i) U8_BACK_1(s, start, i) 491 492 /** @deprecated ICU 2.4. Renamed to U8_BACK_N, see utf_old.h. */ 493 #define UTF8_BACK_N_SAFE(s, start, i, n) U8_BACK_N(s, start, i, n) 494 495 /** @deprecated ICU 2.4. Renamed to U8_SET_CP_LIMIT, see utf_old.h. */ 496 #define UTF8_SET_CHAR_LIMIT_SAFE(s, start, i, length) U8_SET_CP_LIMIT(s, start, i, length) 497 498 /* Formerly utf16.h --------------------------------------------------------- */ 499 500 /** Is uchar a first/lead surrogate? @deprecated ICU 2.4. Renamed to U_IS_LEAD and U16_IS_LEAD, see utf_old.h. */ 501 #define UTF_IS_FIRST_SURROGATE(uchar) (((uchar)&0xfffffc00)==0xd800) 502 503 /** Is uchar a second/trail surrogate? @deprecated ICU 2.4. Renamed to U_IS_TRAIL and U16_IS_TRAIL, see utf_old.h. */ 504 #define UTF_IS_SECOND_SURROGATE(uchar) (((uchar)&0xfffffc00)==0xdc00) 505 506 /** Assuming c is a surrogate, is it a first/lead surrogate? @deprecated ICU 2.4. Renamed to U_IS_SURROGATE_LEAD and U16_IS_SURROGATE_LEAD, see utf_old.h. */ 507 #define UTF_IS_SURROGATE_FIRST(c) (((c)&0x400)==0) 508 509 /** Helper constant for UTF16_GET_PAIR_VALUE. @deprecated ICU 2.4. Renamed to U16_SURROGATE_OFFSET, see utf_old.h. */ 510 #define UTF_SURROGATE_OFFSET ((0xd800<<10UL)+0xdc00-0x10000) 511 512 /** Get the UTF-32 value from the surrogate code units. @deprecated ICU 2.4. Renamed to U16_GET_SUPPLEMENTARY, see utf_old.h. */ 513 #define UTF16_GET_PAIR_VALUE(first, second) \ 514 (((first)<<10UL)+(second)-UTF_SURROGATE_OFFSET) 515 516 /** @deprecated ICU 2.4. Renamed to U16_LEAD, see utf_old.h. */ 517 #define UTF_FIRST_SURROGATE(supplementary) (UChar)(((supplementary)>>10)+0xd7c0) 518 519 /** @deprecated ICU 2.4. Renamed to U16_TRAIL, see utf_old.h. */ 520 #define UTF_SECOND_SURROGATE(supplementary) (UChar)(((supplementary)&0x3ff)|0xdc00) 521 522 /** @deprecated ICU 2.4. Renamed to U16_LEAD, see utf_old.h. */ 523 #define UTF16_LEAD(supplementary) UTF_FIRST_SURROGATE(supplementary) 524 525 /** @deprecated ICU 2.4. Renamed to U16_TRAIL, see utf_old.h. */ 526 #define UTF16_TRAIL(supplementary) UTF_SECOND_SURROGATE(supplementary) 527 528 /** @deprecated ICU 2.4. Renamed to U16_IS_SINGLE, see utf_old.h. */ 529 #define UTF16_IS_SINGLE(uchar) !UTF_IS_SURROGATE(uchar) 530 531 /** @deprecated ICU 2.4. Renamed to U16_IS_LEAD, see utf_old.h. */ 532 #define UTF16_IS_LEAD(uchar) UTF_IS_FIRST_SURROGATE(uchar) 533 534 /** @deprecated ICU 2.4. Renamed to U16_IS_TRAIL, see utf_old.h. */ 535 #define UTF16_IS_TRAIL(uchar) UTF_IS_SECOND_SURROGATE(uchar) 536 537 /** Does this scalar Unicode value need multiple code units for storage? @deprecated ICU 2.4. Use U16_LENGTH or test ((uint32_t)(c)>0xffff) instead, see utf_old.h. */ 538 #define UTF16_NEED_MULTIPLE_UCHAR(c) ((uint32_t)(c)>0xffff) 539 540 /** @deprecated ICU 2.4. Renamed to U16_LENGTH, see utf_old.h. */ 541 #define UTF16_CHAR_LENGTH(c) ((uint32_t)(c)<=0xffff ? 1 : 2) 542 543 /** @deprecated ICU 2.4. Renamed to U16_MAX_LENGTH, see utf_old.h. */ 544 #define UTF16_MAX_CHAR_LENGTH 2 545 546 /** Average number of code units compared to UTF-16. @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 547 #define UTF16_ARRAY_SIZE(size) (size) 548 549 /** 550 * Get a single code point from an offset that points to any 551 * of the code units that belong to that code point. 552 * Assume 0<=i<length. 553 * 554 * This could be used for iteration together with 555 * UTF16_CHAR_LENGTH() and UTF_IS_ERROR(), 556 * but the use of UTF16_NEXT_CHAR[_UNSAFE]() and 557 * UTF16_PREV_CHAR[_UNSAFE]() is more efficient for that. 558 * @deprecated ICU 2.4. Renamed to U16_GET_UNSAFE, see utf_old.h. 559 */ 560 #define UTF16_GET_CHAR_UNSAFE(s, i, c) { \ 561 (c)=(s)[i]; \ 562 if(UTF_IS_SURROGATE(c)) { \ 563 if(UTF_IS_SURROGATE_FIRST(c)) { \ 564 (c)=UTF16_GET_PAIR_VALUE((c), (s)[(i)+1]); \ 565 } else { \ 566 (c)=UTF16_GET_PAIR_VALUE((s)[(i)-1], (c)); \ 567 } \ 568 } \ 569 } 570 571 /** @deprecated ICU 2.4. Use U16_GET instead, see utf_old.h. */ 572 #define UTF16_GET_CHAR_SAFE(s, start, i, length, c, strict) { \ 573 (c)=(s)[i]; \ 574 if(UTF_IS_SURROGATE(c)) { \ 575 uint16_t __c2; \ 576 if(UTF_IS_SURROGATE_FIRST(c)) { \ 577 if((i)+1<(length) && UTF_IS_SECOND_SURROGATE(__c2=(s)[(i)+1])) { \ 578 (c)=UTF16_GET_PAIR_VALUE((c), __c2); \ 579 /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \ 580 } else if(strict) {\ 581 /* unmatched first surrogate */ \ 582 (c)=UTF_ERROR_VALUE; \ 583 } \ 584 } else { \ 585 if((i)-1>=(start) && UTF_IS_FIRST_SURROGATE(__c2=(s)[(i)-1])) { \ 586 (c)=UTF16_GET_PAIR_VALUE(__c2, (c)); \ 587 /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \ 588 } else if(strict) {\ 589 /* unmatched second surrogate */ \ 590 (c)=UTF_ERROR_VALUE; \ 591 } \ 592 } \ 593 } else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \ 594 (c)=UTF_ERROR_VALUE; \ 595 } \ 596 } 597 598 /** @deprecated ICU 2.4. Renamed to U16_NEXT_UNSAFE, see utf_old.h. */ 599 #define UTF16_NEXT_CHAR_UNSAFE(s, i, c) { \ 600 (c)=(s)[(i)++]; \ 601 if(UTF_IS_FIRST_SURROGATE(c)) { \ 602 (c)=UTF16_GET_PAIR_VALUE((c), (s)[(i)++]); \ 603 } \ 604 } 605 606 /** @deprecated ICU 2.4. Renamed to U16_APPEND_UNSAFE, see utf_old.h. */ 607 #define UTF16_APPEND_CHAR_UNSAFE(s, i, c) { \ 608 if((uint32_t)(c)<=0xffff) { \ 609 (s)[(i)++]=(uint16_t)(c); \ 610 } else { \ 611 (s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \ 612 (s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \ 613 } \ 614 } 615 616 /** @deprecated ICU 2.4. Renamed to U16_FWD_1_UNSAFE, see utf_old.h. */ 617 #define UTF16_FWD_1_UNSAFE(s, i) { \ 618 if(UTF_IS_FIRST_SURROGATE((s)[(i)++])) { \ 619 ++(i); \ 620 } \ 621 } 622 623 /** @deprecated ICU 2.4. Renamed to U16_FWD_N_UNSAFE, see utf_old.h. */ 624 #define UTF16_FWD_N_UNSAFE(s, i, n) { \ 625 int32_t __N=(n); \ 626 while(__N>0) { \ 627 UTF16_FWD_1_UNSAFE(s, i); \ 628 --__N; \ 629 } \ 630 } 631 632 /** @deprecated ICU 2.4. Renamed to U16_SET_CP_START_UNSAFE, see utf_old.h. */ 633 #define UTF16_SET_CHAR_START_UNSAFE(s, i) { \ 634 if(UTF_IS_SECOND_SURROGATE((s)[i])) { \ 635 --(i); \ 636 } \ 637 } 638 639 /** @deprecated ICU 2.4. Use U16_NEXT instead, see utf_old.h. */ 640 #define UTF16_NEXT_CHAR_SAFE(s, i, length, c, strict) { \ 641 (c)=(s)[(i)++]; \ 642 if(UTF_IS_FIRST_SURROGATE(c)) { \ 643 uint16_t __c2; \ 644 if((i)<(length) && UTF_IS_SECOND_SURROGATE(__c2=(s)[(i)])) { \ 645 ++(i); \ 646 (c)=UTF16_GET_PAIR_VALUE((c), __c2); \ 647 /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \ 648 } else if(strict) {\ 649 /* unmatched first surrogate */ \ 650 (c)=UTF_ERROR_VALUE; \ 651 } \ 652 } else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \ 653 /* unmatched second surrogate or other non-character */ \ 654 (c)=UTF_ERROR_VALUE; \ 655 } \ 656 } 657 658 /** @deprecated ICU 2.4. Use U16_APPEND instead, see utf_old.h. */ 659 #define UTF16_APPEND_CHAR_SAFE(s, i, length, c) { \ 660 if((uint32_t)(c)<=0xffff) { \ 661 (s)[(i)++]=(uint16_t)(c); \ 662 } else if((uint32_t)(c)<=0x10ffff) { \ 663 if((i)+1<(length)) { \ 664 (s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \ 665 (s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \ 666 } else /* not enough space */ { \ 667 (s)[(i)++]=UTF_ERROR_VALUE; \ 668 } \ 669 } else /* c>0x10ffff, write error value */ { \ 670 (s)[(i)++]=UTF_ERROR_VALUE; \ 671 } \ 672 } 673 674 /** @deprecated ICU 2.4. Renamed to U16_FWD_1, see utf_old.h. */ 675 #define UTF16_FWD_1_SAFE(s, i, length) U16_FWD_1(s, i, length) 676 677 /** @deprecated ICU 2.4. Renamed to U16_FWD_N, see utf_old.h. */ 678 #define UTF16_FWD_N_SAFE(s, i, length, n) U16_FWD_N(s, i, length, n) 679 680 /** @deprecated ICU 2.4. Renamed to U16_SET_CP_START, see utf_old.h. */ 681 #define UTF16_SET_CHAR_START_SAFE(s, start, i) U16_SET_CP_START(s, start, i) 682 683 /** @deprecated ICU 2.4. Renamed to U16_PREV_UNSAFE, see utf_old.h. */ 684 #define UTF16_PREV_CHAR_UNSAFE(s, i, c) { \ 685 (c)=(s)[--(i)]; \ 686 if(UTF_IS_SECOND_SURROGATE(c)) { \ 687 (c)=UTF16_GET_PAIR_VALUE((s)[--(i)], (c)); \ 688 } \ 689 } 690 691 /** @deprecated ICU 2.4. Renamed to U16_BACK_1_UNSAFE, see utf_old.h. */ 692 #define UTF16_BACK_1_UNSAFE(s, i) { \ 693 if(UTF_IS_SECOND_SURROGATE((s)[--(i)])) { \ 694 --(i); \ 695 } \ 696 } 697 698 /** @deprecated ICU 2.4. Renamed to U16_BACK_N_UNSAFE, see utf_old.h. */ 699 #define UTF16_BACK_N_UNSAFE(s, i, n) { \ 700 int32_t __N=(n); \ 701 while(__N>0) { \ 702 UTF16_BACK_1_UNSAFE(s, i); \ 703 --__N; \ 704 } \ 705 } 706 707 /** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT_UNSAFE, see utf_old.h. */ 708 #define UTF16_SET_CHAR_LIMIT_UNSAFE(s, i) { \ 709 if(UTF_IS_FIRST_SURROGATE((s)[(i)-1])) { \ 710 ++(i); \ 711 } \ 712 } 713 714 /** @deprecated ICU 2.4. Use U16_PREV instead, see utf_old.h. */ 715 #define UTF16_PREV_CHAR_SAFE(s, start, i, c, strict) { \ 716 (c)=(s)[--(i)]; \ 717 if(UTF_IS_SECOND_SURROGATE(c)) { \ 718 uint16_t __c2; \ 719 if((i)>(start) && UTF_IS_FIRST_SURROGATE(__c2=(s)[(i)-1])) { \ 720 --(i); \ 721 (c)=UTF16_GET_PAIR_VALUE(__c2, (c)); \ 722 /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \ 723 } else if(strict) {\ 724 /* unmatched second surrogate */ \ 725 (c)=UTF_ERROR_VALUE; \ 726 } \ 727 } else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \ 728 /* unmatched first surrogate or other non-character */ \ 729 (c)=UTF_ERROR_VALUE; \ 730 } \ 731 } 732 733 /** @deprecated ICU 2.4. Renamed to U16_BACK_1, see utf_old.h. */ 734 #define UTF16_BACK_1_SAFE(s, start, i) U16_BACK_1(s, start, i) 735 736 /** @deprecated ICU 2.4. Renamed to U16_BACK_N, see utf_old.h. */ 737 #define UTF16_BACK_N_SAFE(s, start, i, n) U16_BACK_N(s, start, i, n) 738 739 /** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT, see utf_old.h. */ 740 #define UTF16_SET_CHAR_LIMIT_SAFE(s, start, i, length) U16_SET_CP_LIMIT(s, start, i, length) 741 742 /* Formerly utf32.h --------------------------------------------------------- */ 743 744 /* 745 * Old documentation: 746 * 747 * This file defines macros to deal with UTF-32 code units and code points. 748 * Signatures and semantics are the same as for the similarly named macros 749 * in utf16.h. 750 * utf32.h is included by utf.h after unicode/umachine.h</p> 751 * and some common definitions. 752 * <p><b>Usage:</b> ICU coding guidelines for if() statements should be followed when using these macros. 753 * Compound statements (curly braces {}) must be used for if-else-while... 754 * bodies and all macro statements should be terminated with semicolon.</p> 755 */ 756 757 /* internal definitions ----------------------------------------------------- */ 758 759 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 760 #define UTF32_IS_SAFE(c, strict) \ 761 (!(strict) ? \ 762 (uint32_t)(c)<=0x10ffff : \ 763 UTF_IS_UNICODE_CHAR(c)) 764 765 /* 766 * For the semantics of all of these macros, see utf16.h. 767 * The UTF-32 versions are trivial because any code point is 768 * encoded using exactly one code unit. 769 */ 770 771 /* single-code point definitions -------------------------------------------- */ 772 773 /* classes of code unit values */ 774 775 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 776 #define UTF32_IS_SINGLE(uchar) 1 777 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 778 #define UTF32_IS_LEAD(uchar) 0 779 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 780 #define UTF32_IS_TRAIL(uchar) 0 781 782 /* number of code units per code point */ 783 784 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 785 #define UTF32_NEED_MULTIPLE_UCHAR(c) 0 786 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 787 #define UTF32_CHAR_LENGTH(c) 1 788 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 789 #define UTF32_MAX_CHAR_LENGTH 1 790 791 /* average number of code units compared to UTF-16 */ 792 793 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 794 #define UTF32_ARRAY_SIZE(size) (size) 795 796 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 797 #define UTF32_GET_CHAR_UNSAFE(s, i, c) { \ 798 (c)=(s)[i]; \ 799 } 800 801 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 802 #define UTF32_GET_CHAR_SAFE(s, start, i, length, c, strict) { \ 803 (c)=(s)[i]; \ 804 if(!UTF32_IS_SAFE(c, strict)) { \ 805 (c)=UTF_ERROR_VALUE; \ 806 } \ 807 } 808 809 /* definitions with forward iteration --------------------------------------- */ 810 811 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 812 #define UTF32_NEXT_CHAR_UNSAFE(s, i, c) { \ 813 (c)=(s)[(i)++]; \ 814 } 815 816 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 817 #define UTF32_APPEND_CHAR_UNSAFE(s, i, c) { \ 818 (s)[(i)++]=(c); \ 819 } 820 821 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 822 #define UTF32_FWD_1_UNSAFE(s, i) { \ 823 ++(i); \ 824 } 825 826 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 827 #define UTF32_FWD_N_UNSAFE(s, i, n) { \ 828 (i)+=(n); \ 829 } 830 831 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 832 #define UTF32_SET_CHAR_START_UNSAFE(s, i) { \ 833 } 834 835 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 836 #define UTF32_NEXT_CHAR_SAFE(s, i, length, c, strict) { \ 837 (c)=(s)[(i)++]; \ 838 if(!UTF32_IS_SAFE(c, strict)) { \ 839 (c)=UTF_ERROR_VALUE; \ 840 } \ 841 } 842 843 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 844 #define UTF32_APPEND_CHAR_SAFE(s, i, length, c) { \ 845 if((uint32_t)(c)<=0x10ffff) { \ 846 (s)[(i)++]=(c); \ 847 } else /* c>0x10ffff, write 0xfffd */ { \ 848 (s)[(i)++]=0xfffd; \ 849 } \ 850 } 851 852 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 853 #define UTF32_FWD_1_SAFE(s, i, length) { \ 854 ++(i); \ 855 } 856 857 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 858 #define UTF32_FWD_N_SAFE(s, i, length, n) { \ 859 if(((i)+=(n))>(length)) { \ 860 (i)=(length); \ 861 } \ 862 } 863 864 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 865 #define UTF32_SET_CHAR_START_SAFE(s, start, i) { \ 866 } 867 868 /* definitions with backward iteration -------------------------------------- */ 869 870 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 871 #define UTF32_PREV_CHAR_UNSAFE(s, i, c) { \ 872 (c)=(s)[--(i)]; \ 873 } 874 875 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 876 #define UTF32_BACK_1_UNSAFE(s, i) { \ 877 --(i); \ 878 } 879 880 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 881 #define UTF32_BACK_N_UNSAFE(s, i, n) { \ 882 (i)-=(n); \ 883 } 884 885 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 886 #define UTF32_SET_CHAR_LIMIT_UNSAFE(s, i) { \ 887 } 888 889 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 890 #define UTF32_PREV_CHAR_SAFE(s, start, i, c, strict) { \ 891 (c)=(s)[--(i)]; \ 892 if(!UTF32_IS_SAFE(c, strict)) { \ 893 (c)=UTF_ERROR_VALUE; \ 894 } \ 895 } 896 897 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 898 #define UTF32_BACK_1_SAFE(s, start, i) { \ 899 --(i); \ 900 } 901 902 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 903 #define UTF32_BACK_N_SAFE(s, start, i, n) { \ 904 (i)-=(n); \ 905 if((i)<(start)) { \ 906 (i)=(start); \ 907 } \ 908 } 909 910 /** @deprecated ICU 2.4. Obsolete, see utf_old.h. */ 911 #define UTF32_SET_CHAR_LIMIT_SAFE(s, i, length) { \ 912 } 913 914 /* Formerly utf.h, part 2 --------------------------------------------------- */ 915 916 /** 917 * Estimate the number of code units for a string based on the number of UTF-16 code units. 918 * 919 * @deprecated ICU 2.4. Obsolete, see utf_old.h. 920 */ 921 #define UTF_ARRAY_SIZE(size) UTF16_ARRAY_SIZE(size) 922 923 /** @deprecated ICU 2.4. Renamed to U16_GET_UNSAFE, see utf_old.h. */ 924 #define UTF_GET_CHAR_UNSAFE(s, i, c) UTF16_GET_CHAR_UNSAFE(s, i, c) 925 926 /** @deprecated ICU 2.4. Use U16_GET instead, see utf_old.h. */ 927 #define UTF_GET_CHAR_SAFE(s, start, i, length, c, strict) UTF16_GET_CHAR_SAFE(s, start, i, length, c, strict) 928 929 930 /** @deprecated ICU 2.4. Renamed to U16_NEXT_UNSAFE, see utf_old.h. */ 931 #define UTF_NEXT_CHAR_UNSAFE(s, i, c) UTF16_NEXT_CHAR_UNSAFE(s, i, c) 932 933 /** @deprecated ICU 2.4. Use U16_NEXT instead, see utf_old.h. */ 934 #define UTF_NEXT_CHAR_SAFE(s, i, length, c, strict) UTF16_NEXT_CHAR_SAFE(s, i, length, c, strict) 935 936 937 /** @deprecated ICU 2.4. Renamed to U16_APPEND_UNSAFE, see utf_old.h. */ 938 #define UTF_APPEND_CHAR_UNSAFE(s, i, c) UTF16_APPEND_CHAR_UNSAFE(s, i, c) 939 940 /** @deprecated ICU 2.4. Use U16_APPEND instead, see utf_old.h. */ 941 #define UTF_APPEND_CHAR_SAFE(s, i, length, c) UTF16_APPEND_CHAR_SAFE(s, i, length, c) 942 943 944 /** @deprecated ICU 2.4. Renamed to U16_FWD_1_UNSAFE, see utf_old.h. */ 945 #define UTF_FWD_1_UNSAFE(s, i) UTF16_FWD_1_UNSAFE(s, i) 946 947 /** @deprecated ICU 2.4. Renamed to U16_FWD_1, see utf_old.h. */ 948 #define UTF_FWD_1_SAFE(s, i, length) UTF16_FWD_1_SAFE(s, i, length) 949 950 951 /** @deprecated ICU 2.4. Renamed to U16_FWD_N_UNSAFE, see utf_old.h. */ 952 #define UTF_FWD_N_UNSAFE(s, i, n) UTF16_FWD_N_UNSAFE(s, i, n) 953 954 /** @deprecated ICU 2.4. Renamed to U16_FWD_N, see utf_old.h. */ 955 #define UTF_FWD_N_SAFE(s, i, length, n) UTF16_FWD_N_SAFE(s, i, length, n) 956 957 958 /** @deprecated ICU 2.4. Renamed to U16_SET_CP_START_UNSAFE, see utf_old.h. */ 959 #define UTF_SET_CHAR_START_UNSAFE(s, i) UTF16_SET_CHAR_START_UNSAFE(s, i) 960 961 /** @deprecated ICU 2.4. Renamed to U16_SET_CP_START, see utf_old.h. */ 962 #define UTF_SET_CHAR_START_SAFE(s, start, i) UTF16_SET_CHAR_START_SAFE(s, start, i) 963 964 965 /** @deprecated ICU 2.4. Renamed to U16_PREV_UNSAFE, see utf_old.h. */ 966 #define UTF_PREV_CHAR_UNSAFE(s, i, c) UTF16_PREV_CHAR_UNSAFE(s, i, c) 967 968 /** @deprecated ICU 2.4. Use U16_PREV instead, see utf_old.h. */ 969 #define UTF_PREV_CHAR_SAFE(s, start, i, c, strict) UTF16_PREV_CHAR_SAFE(s, start, i, c, strict) 970 971 972 /** @deprecated ICU 2.4. Renamed to U16_BACK_1_UNSAFE, see utf_old.h. */ 973 #define UTF_BACK_1_UNSAFE(s, i) UTF16_BACK_1_UNSAFE(s, i) 974 975 /** @deprecated ICU 2.4. Renamed to U16_BACK_1, see utf_old.h. */ 976 #define UTF_BACK_1_SAFE(s, start, i) UTF16_BACK_1_SAFE(s, start, i) 977 978 979 /** @deprecated ICU 2.4. Renamed to U16_BACK_N_UNSAFE, see utf_old.h. */ 980 #define UTF_BACK_N_UNSAFE(s, i, n) UTF16_BACK_N_UNSAFE(s, i, n) 981 982 /** @deprecated ICU 2.4. Renamed to U16_BACK_N, see utf_old.h. */ 983 #define UTF_BACK_N_SAFE(s, start, i, n) UTF16_BACK_N_SAFE(s, start, i, n) 984 985 986 /** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT_UNSAFE, see utf_old.h. */ 987 #define UTF_SET_CHAR_LIMIT_UNSAFE(s, i) UTF16_SET_CHAR_LIMIT_UNSAFE(s, i) 988 989 /** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT, see utf_old.h. */ 990 #define UTF_SET_CHAR_LIMIT_SAFE(s, start, i, length) UTF16_SET_CHAR_LIMIT_SAFE(s, start, i, length) 991 992 /* Define default macros (UTF-16 "safe") ------------------------------------ */ 993 994 /** 995 * Does this code unit alone encode a code point (BMP, not a surrogate)? 996 * Same as UTF16_IS_SINGLE. 997 * @deprecated ICU 2.4. Renamed to U_IS_SINGLE and U16_IS_SINGLE, see utf_old.h. 998 */ 999 #define UTF_IS_SINGLE(uchar) U16_IS_SINGLE(uchar) 1000 1001 /** 1002 * Is this code unit the first one of several (a lead surrogate)? 1003 * Same as UTF16_IS_LEAD. 1004 * @deprecated ICU 2.4. Renamed to U_IS_LEAD and U16_IS_LEAD, see utf_old.h. 1005 */ 1006 #define UTF_IS_LEAD(uchar) U16_IS_LEAD(uchar) 1007 1008 /** 1009 * Is this code unit one of several but not the first one (a trail surrogate)? 1010 * Same as UTF16_IS_TRAIL. 1011 * @deprecated ICU 2.4. Renamed to U_IS_TRAIL and U16_IS_TRAIL, see utf_old.h. 1012 */ 1013 #define UTF_IS_TRAIL(uchar) U16_IS_TRAIL(uchar) 1014 1015 /** 1016 * Does this code point require multiple code units (is it a supplementary code point)? 1017 * Same as UTF16_NEED_MULTIPLE_UCHAR. 1018 * @deprecated ICU 2.4. Use U16_LENGTH or test ((uint32_t)(c)>0xffff) instead. 1019 */ 1020 #define UTF_NEED_MULTIPLE_UCHAR(c) UTF16_NEED_MULTIPLE_UCHAR(c) 1021 1022 /** 1023 * How many code units are used to encode this code point (1 or 2)? 1024 * Same as UTF16_CHAR_LENGTH. 1025 * @deprecated ICU 2.4. Renamed to U16_LENGTH, see utf_old.h. 1026 */ 1027 #define UTF_CHAR_LENGTH(c) U16_LENGTH(c) 1028 1029 /** 1030 * How many code units are used at most for any Unicode code point (2)? 1031 * Same as UTF16_MAX_CHAR_LENGTH. 1032 * @deprecated ICU 2.4. Renamed to U16_MAX_LENGTH, see utf_old.h. 1033 */ 1034 #define UTF_MAX_CHAR_LENGTH U16_MAX_LENGTH 1035 1036 /** 1037 * Set c to the code point that contains the code unit i. 1038 * i could point to the lead or the trail surrogate for the code point. 1039 * i is not modified. 1040 * Same as UTF16_GET_CHAR. 1041 * \pre 0<=i<length 1042 * 1043 * @deprecated ICU 2.4. Renamed to U16_GET, see utf_old.h. 1044 */ 1045 #define UTF_GET_CHAR(s, start, i, length, c) U16_GET(s, start, i, length, c) 1046 1047 /** 1048 * Set c to the code point that starts at code unit i 1049 * and advance i to beyond the code units of this code point (post-increment). 1050 * i must point to the first code unit of a code point. 1051 * Otherwise c is set to the trail unit (surrogate) itself. 1052 * Same as UTF16_NEXT_CHAR. 1053 * \pre 0<=i<length 1054 * \post 0<i<=length 1055 * 1056 * @deprecated ICU 2.4. Renamed to U16_NEXT, see utf_old.h. 1057 */ 1058 #define UTF_NEXT_CHAR(s, i, length, c) U16_NEXT(s, i, length, c) 1059 1060 /** 1061 * Append the code units of code point c to the string at index i 1062 * and advance i to beyond the new code units (post-increment). 1063 * The code units beginning at index i will be overwritten. 1064 * Same as UTF16_APPEND_CHAR. 1065 * \pre 0<=c<=0x10ffff 1066 * \pre 0<=i<length 1067 * \post 0<i<=length 1068 * 1069 * @deprecated ICU 2.4. Use U16_APPEND instead, see utf_old.h. 1070 */ 1071 #define UTF_APPEND_CHAR(s, i, length, c) UTF16_APPEND_CHAR_SAFE(s, i, length, c) 1072 1073 /** 1074 * Advance i to beyond the code units of the code point that begins at i. 1075 * I.e., advance i by one code point. 1076 * Same as UTF16_FWD_1. 1077 * \pre 0<=i<length 1078 * \post 0<i<=length 1079 * 1080 * @deprecated ICU 2.4. Renamed to U16_FWD_1, see utf_old.h. 1081 */ 1082 #define UTF_FWD_1(s, i, length) U16_FWD_1(s, i, length) 1083 1084 /** 1085 * Advance i to beyond the code units of the n code points where the first one begins at i. 1086 * I.e., advance i by n code points. 1087 * Same as UT16_FWD_N. 1088 * \pre 0<=i<length 1089 * \post 0<i<=length 1090 * 1091 * @deprecated ICU 2.4. Renamed to U16_FWD_N, see utf_old.h. 1092 */ 1093 #define UTF_FWD_N(s, i, length, n) U16_FWD_N(s, i, length, n) 1094 1095 /** 1096 * Take the random-access index i and adjust it so that it points to the beginning 1097 * of a code point. 1098 * The input index points to any code unit of a code point and is moved to point to 1099 * the first code unit of the same code point. i is never incremented. 1100 * In other words, if i points to a trail surrogate that is preceded by a matching 1101 * lead surrogate, then i is decremented. Otherwise it is not modified. 1102 * This can be used to start an iteration with UTF_NEXT_CHAR() from a random index. 1103 * Same as UTF16_SET_CHAR_START. 1104 * \pre start<=i<length 1105 * \post start<=i<length 1106 * 1107 * @deprecated ICU 2.4. Renamed to U16_SET_CP_START, see utf_old.h. 1108 */ 1109 #define UTF_SET_CHAR_START(s, start, i) U16_SET_CP_START(s, start, i) 1110 1111 /** 1112 * Set c to the code point that has code units before i 1113 * and move i backward (towards the beginning of the string) 1114 * to the first code unit of this code point (pre-increment). 1115 * i must point to the first code unit after the last unit of a code point (i==length is allowed). 1116 * Same as UTF16_PREV_CHAR. 1117 * \pre start<i<=length 1118 * \post start<=i<length 1119 * 1120 * @deprecated ICU 2.4. Renamed to U16_PREV, see utf_old.h. 1121 */ 1122 #define UTF_PREV_CHAR(s, start, i, c) U16_PREV(s, start, i, c) 1123 1124 /** 1125 * Move i backward (towards the beginning of the string) 1126 * to the first code unit of the code point that has code units before i. 1127 * I.e., move i backward by one code point. 1128 * i must point to the first code unit after the last unit of a code point (i==length is allowed). 1129 * Same as UTF16_BACK_1. 1130 * \pre start<i<=length 1131 * \post start<=i<length 1132 * 1133 * @deprecated ICU 2.4. Renamed to U16_BACK_1, see utf_old.h. 1134 */ 1135 #define UTF_BACK_1(s, start, i) U16_BACK_1(s, start, i) 1136 1137 /** 1138 * Move i backward (towards the beginning of the string) 1139 * to the first code unit of the n code points that have code units before i. 1140 * I.e., move i backward by n code points. 1141 * i must point to the first code unit after the last unit of a code point (i==length is allowed). 1142 * Same as UTF16_BACK_N. 1143 * \pre start<i<=length 1144 * \post start<=i<length 1145 * 1146 * @deprecated ICU 2.4. Renamed to U16_BACK_N, see utf_old.h. 1147 */ 1148 #define UTF_BACK_N(s, start, i, n) U16_BACK_N(s, start, i, n) 1149 1150 /** 1151 * Take the random-access index i and adjust it so that it points beyond 1152 * a code point. The input index points beyond any code unit 1153 * of a code point and is moved to point beyond the last code unit of the same 1154 * code point. i is never decremented. 1155 * In other words, if i points to a trail surrogate that is preceded by a matching 1156 * lead surrogate, then i is incremented. Otherwise it is not modified. 1157 * This can be used to start an iteration with UTF_PREV_CHAR() from a random index. 1158 * Same as UTF16_SET_CHAR_LIMIT. 1159 * \pre start<i<=length 1160 * \post start<i<=length 1161 * 1162 * @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT, see utf_old.h. 1163 */ 1164 #define UTF_SET_CHAR_LIMIT(s, start, i, length) U16_SET_CP_LIMIT(s, start, i, length) 1165 1166 #endif /* U_HIDE_DEPRECATED_API */ 1167 1168 #endif 1169 1170
