1 /* Copyright (C) 1995-2008, 2009, 2010, 2011 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, write to the Free 16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17 02111-1307 USA. */ 18 19 /* 20 * ISO C99 Standard: 7.24 21 * Extended multibyte and wide character utilities <wchar.h> 22 */ 23 24 #ifndef _WCHAR_H 25 26 #if !defined __need_mbstate_t && !defined __need_wint_t 27 # define _WCHAR_H 1 28 # include <features.h> 29 #endif 30 31 #ifdef _WCHAR_H 32 /* Get FILE definition. */ 33 # define __need___FILE 34 # if defined __USE_UNIX98 || defined __USE_XOPEN2K 35 # define __need_FILE 36 # endif 37 # include <stdio.h> 38 /* Get va_list definition. */ 39 # define __need___va_list 40 # include <stdarg.h> 41 42 # include <bits/wchar.h> 43 44 /* Get size_t, wchar_t, wint_t and NULL from <stddef.h>. */ 45 # define __need_size_t 46 # define __need_wchar_t 47 # define __need_NULL 48 #endif 49 #if defined _WCHAR_H || defined __need_wint_t || !defined __WINT_TYPE__ 50 # undef __need_wint_t 51 # define __need_wint_t 52 # include <stddef.h> 53 54 /* We try to get wint_t from <stddef.h>, but not all GCC versions define it 55 there. So define it ourselves if it remains undefined. */ 56 # ifndef _WINT_T 57 /* Integral type unchanged by default argument promotions that can 58 hold any value corresponding to members of the extended character 59 set, as well as at least one value that does not correspond to any 60 member of the extended character set. */ 61 # define _WINT_T 62 typedef unsigned int wint_t; 63 # else 64 /* Work around problems with the <stddef.h> file which doesn't put 65 wint_t in the std namespace. */ 66 # if defined __cplusplus && defined _GLIBCPP_USE_NAMESPACES \ 67 && defined __WINT_TYPE__ 68 __BEGIN_NAMESPACE_STD 69 typedef __WINT_TYPE__ wint_t; 70 __END_NAMESPACE_STD 71 # endif 72 # endif 73 74 /* Tell the caller that we provide correct C++ prototypes. */ 75 # if defined __cplusplus && __GNUC_PREREQ (4, 4) 76 # define __CORRECT_ISO_CPP_WCHAR_H_PROTO 77 # endif 78 #endif 79 80 #if (defined _WCHAR_H || defined __need_mbstate_t) && !defined __mbstate_t_defined 81 # define __mbstate_t_defined 1 82 /* Conversion state information. */ 83 typedef struct 84 { 85 int __count; 86 union 87 { 88 # ifdef __WINT_TYPE__ 89 __WINT_TYPE__ __wch; 90 # else 91 wint_t __wch; 92 # endif 93 char __wchb[4]; 94 } __value; /* Value so far. */ 95 } __mbstate_t; 96 #endif 97 #undef __need_mbstate_t 98 99 100 /* The rest of the file is only used if used if __need_mbstate_t is not 101 defined. */ 102 #ifdef _WCHAR_H 103 104 __BEGIN_NAMESPACE_C99 105 /* Public type. */ 106 typedef __mbstate_t mbstate_t; 107 __END_NAMESPACE_C99 108 #ifdef __USE_GNU 109 __USING_NAMESPACE_C99(mbstate_t) 110 #endif 111 112 #ifndef WCHAR_MIN 113 /* These constants might also be defined in <inttypes.h>. */ 114 # define WCHAR_MIN __WCHAR_MIN 115 # define WCHAR_MAX __WCHAR_MAX 116 #endif 117 118 #ifndef WEOF 119 # define WEOF (0xffffffffu) 120 #endif 121 122 /* For XPG4 compliance we have to define the stuff from <wctype.h> here 123 as well. */ 124 #if defined __USE_XOPEN && !defined __USE_UNIX98 125 # include <wctype.h> 126 #endif 127 128 129 __BEGIN_DECLS 130 131 __BEGIN_NAMESPACE_STD 132 /* This incomplete type is defined in <time.h> but needed here because 133 of `wcsftime'. */ 134 struct tm; 135 __END_NAMESPACE_STD 136 /* XXX We have to clean this up at some point. Since tm is in the std 137 namespace but wcsftime is in __c99 the type wouldn't be found 138 without inserting it in the global namespace. */ 139 __USING_NAMESPACE_STD(tm) 140 141 142 __BEGIN_NAMESPACE_STD 143 /* Copy SRC to DEST. */ 144 extern wchar_t *wcscpy (wchar_t *__restrict __dest, 145 __const wchar_t *__restrict __src) __THROW; 146 /* Copy no more than N wide-characters of SRC to DEST. */ 147 extern wchar_t *wcsncpy (wchar_t *__restrict __dest, 148 __const wchar_t *__restrict __src, size_t __n) 149 __THROW; 150 151 /* Append SRC onto DEST. */ 152 extern wchar_t *wcscat (wchar_t *__restrict __dest, 153 __const wchar_t *__restrict __src) __THROW; 154 /* Append no more than N wide-characters of SRC onto DEST. */ 155 extern wchar_t *wcsncat (wchar_t *__restrict __dest, 156 __const wchar_t *__restrict __src, size_t __n) 157 __THROW; 158 159 /* Compare S1 and S2. */ 160 extern int wcscmp (__const wchar_t *__s1, __const wchar_t *__s2) 161 __THROW __attribute_pure__; 162 /* Compare N wide-characters of S1 and S2. */ 163 extern int wcsncmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n) 164 __THROW __attribute_pure__; 165 __END_NAMESPACE_STD 166 167 #ifdef __USE_XOPEN2K8 168 /* Compare S1 and S2, ignoring case. */ 169 extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW; 170 171 /* Compare no more than N chars of S1 and S2, ignoring case. */ 172 extern int wcsncasecmp (__const wchar_t *__s1, __const wchar_t *__s2, 173 size_t __n) __THROW; 174 175 /* Similar to the two functions above but take the information from 176 the provided locale and not the global locale. */ 177 # include <xlocale.h> 178 179 extern int wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2, 180 __locale_t __loc) __THROW; 181 182 extern int wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2, 183 size_t __n, __locale_t __loc) __THROW; 184 #endif 185 186 __BEGIN_NAMESPACE_STD 187 /* Compare S1 and S2, both interpreted as appropriate to the 188 LC_COLLATE category of the current locale. */ 189 extern int wcscoll (__const wchar_t *__s1, __const wchar_t *__s2) __THROW; 190 /* Transform S2 into array pointed to by S1 such that if wcscmp is 191 applied to two transformed strings the result is the as applying 192 `wcscoll' to the original strings. */ 193 extern size_t wcsxfrm (wchar_t *__restrict __s1, 194 __const wchar_t *__restrict __s2, size_t __n) __THROW; 195 __END_NAMESPACE_STD 196 197 #ifdef __USE_XOPEN2K8 198 /* Similar to the two functions above but take the information from 199 the provided locale and not the global locale. */ 200 201 /* Compare S1 and S2, both interpreted as appropriate to the 202 LC_COLLATE category of the given locale. */ 203 extern int wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2, 204 __locale_t __loc) __THROW; 205 206 /* Transform S2 into array pointed to by S1 such that if wcscmp is 207 applied to two transformed strings the result is the as applying 208 `wcscoll' to the original strings. */ 209 extern size_t wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2, 210 size_t __n, __locale_t __loc) __THROW; 211 212 /* Duplicate S, returning an identical malloc'd string. */ 213 extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__; 214 #endif 215 216 __BEGIN_NAMESPACE_STD 217 /* Find the first occurrence of WC in WCS. */ 218 #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 219 extern "C++" wchar_t *wcschr (wchar_t *__wcs, wchar_t __wc) 220 __THROW __asm ("wcschr") __attribute_pure__; 221 extern "C++" __const wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc) 222 __THROW __asm ("wcschr") __attribute_pure__; 223 #else 224 extern wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc) 225 __THROW __attribute_pure__; 226 #endif 227 /* Find the last occurrence of WC in WCS. */ 228 #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 229 extern "C++" wchar_t *wcsrchr (wchar_t *__wcs, wchar_t __wc) 230 __THROW __asm ("wcsrchr") __attribute_pure__; 231 extern "C++" __const wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc) 232 __THROW __asm ("wcsrchr") __attribute_pure__; 233 #else 234 extern wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc) 235 __THROW __attribute_pure__; 236 #endif 237 __END_NAMESPACE_STD 238 239 #ifdef __USE_GNU 240 /* This function is similar to `wcschr'. But it returns a pointer to 241 the closing NUL wide character in case C is not found in S. */ 242 extern wchar_t *wcschrnul (__const wchar_t *__s, wchar_t __wc) 243 __THROW __attribute_pure__; 244 #endif 245 246 __BEGIN_NAMESPACE_STD 247 /* Return the length of the initial segmet of WCS which 248 consists entirely of wide characters not in REJECT. */ 249 extern size_t wcscspn (__const wchar_t *__wcs, __const wchar_t *__reject) 250 __THROW __attribute_pure__; 251 /* Return the length of the initial segmet of WCS which 252 consists entirely of wide characters in ACCEPT. */ 253 extern size_t wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept) 254 __THROW __attribute_pure__; 255 /* Find the first occurrence in WCS of any character in ACCEPT. */ 256 #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 257 extern "C++" wchar_t *wcspbrk (wchar_t *__wcs, __const wchar_t *__accept) 258 __THROW __asm ("wcspbrk") __attribute_pure__; 259 extern "C++" __const wchar_t *wcspbrk (__const wchar_t *__wcs, 260 __const wchar_t *__accept) 261 __THROW __asm ("wcspbrk") __attribute_pure__; 262 #else 263 extern wchar_t *wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept) 264 __THROW __attribute_pure__; 265 #endif 266 /* Find the first occurrence of NEEDLE in HAYSTACK. */ 267 #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 268 extern "C++" wchar_t *wcsstr (wchar_t *__haystack, __const wchar_t *__needle) 269 __THROW __asm ("wcsstr") __attribute_pure__; 270 extern "C++" __const wchar_t *wcsstr (__const wchar_t *__haystack, 271 __const wchar_t *__needle) 272 __THROW __asm ("wcsstr") __attribute_pure__; 273 #else 274 extern wchar_t *wcsstr (__const wchar_t *__haystack, __const wchar_t *__needle) 275 __THROW __attribute_pure__; 276 #endif 277 278 /* Divide WCS into tokens separated by characters in DELIM. */ 279 extern wchar_t *wcstok (wchar_t *__restrict __s, 280 __const wchar_t *__restrict __delim, 281 wchar_t **__restrict __ptr) __THROW; 282 283 /* Return the number of wide characters in S. */ 284 extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__; 285 __END_NAMESPACE_STD 286 287 #ifdef __USE_XOPEN 288 /* Another name for `wcsstr' from XPG4. */ 289 # ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 290 extern "C++" wchar_t *wcswcs (wchar_t *__haystack, __const wchar_t *__needle) 291 __THROW __asm ("wcswcs") __attribute_pure__; 292 extern "C++" __const wchar_t *wcswcs (__const wchar_t *__haystack, 293 __const wchar_t *__needle) 294 __THROW __asm ("wcswcs") __attribute_pure__; 295 # else 296 extern wchar_t *wcswcs (__const wchar_t *__haystack, __const wchar_t *__needle) 297 __THROW __attribute_pure__; 298 # endif 299 #endif 300 301 #ifdef __USE_XOPEN2K8 302 /* Return the number of wide characters in S, but at most MAXLEN. */ 303 extern size_t wcsnlen (__const wchar_t *__s, size_t __maxlen) 304 __THROW __attribute_pure__; 305 #endif 306 307 308 __BEGIN_NAMESPACE_STD 309 /* Search N wide characters of S for C. */ 310 #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 311 extern "C++" wchar_t *wmemchr (wchar_t *__s, wchar_t __c, size_t __n) 312 __THROW __asm ("wmemchr") __attribute_pure__; 313 extern "C++" __const wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, 314 size_t __n) 315 __THROW __asm ("wmemchr") __attribute_pure__; 316 #else 317 extern wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, size_t __n) 318 __THROW __attribute_pure__; 319 #endif 320 321 /* Compare N wide characters of S1 and S2. */ 322 extern int wmemcmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n) 323 __THROW __attribute_pure__; 324 325 /* Copy N wide characters of SRC to DEST. */ 326 extern wchar_t *wmemcpy (wchar_t *__restrict __s1, 327 __const wchar_t *__restrict __s2, size_t __n) __THROW; 328 329 /* Copy N wide characters of SRC to DEST, guaranteeing 330 correct behavior for overlapping strings. */ 331 extern wchar_t *wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n) 332 __THROW; 333 334 /* Set N wide characters of S to C. */ 335 extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW; 336 __END_NAMESPACE_STD 337 338 #ifdef __USE_GNU 339 /* Copy N wide characters of SRC to DEST and return pointer to following 340 wide character. */ 341 extern wchar_t *wmempcpy (wchar_t *__restrict __s1, 342 __const wchar_t *__restrict __s2, size_t __n) 343 __THROW; 344 #endif 345 346 347 __BEGIN_NAMESPACE_STD 348 /* Determine whether C constitutes a valid (one-byte) multibyte 349 character. */ 350 extern wint_t btowc (int __c) __THROW; 351 352 /* Determine whether C corresponds to a member of the extended 353 character set whose multibyte representation is a single byte. */ 354 extern int wctob (wint_t __c) __THROW; 355 356 /* Determine whether PS points to an object representing the initial 357 state. */ 358 extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__; 359 360 /* Write wide character representation of multibyte character pointed 361 to by S to PWC. */ 362 extern size_t mbrtowc (wchar_t *__restrict __pwc, 363 __const char *__restrict __s, size_t __n, 364 mbstate_t *__p) __THROW; 365 366 /* Write multibyte representation of wide character WC to S. */ 367 extern size_t wcrtomb (char *__restrict __s, wchar_t __wc, 368 mbstate_t *__restrict __ps) __THROW; 369 370 /* Return number of bytes in multibyte character pointed to by S. */ 371 extern size_t __mbrlen (__const char *__restrict __s, size_t __n, 372 mbstate_t *__restrict __ps) __THROW; 373 extern size_t mbrlen (__const char *__restrict __s, size_t __n, 374 mbstate_t *__restrict __ps) __THROW; 375 __END_NAMESPACE_STD 376 377 #ifdef __USE_EXTERN_INLINES 378 /* Define inline function as optimization. */ 379 380 /* We can use the BTOWC and WCTOB optimizations since we know that all 381 locales must use ASCII encoding for the values in the ASCII range 382 and because the wchar_t encoding is always ISO 10646. */ 383 extern wint_t __btowc_alias (int __c) __asm ("btowc"); 384 __extern_inline wint_t 385 __NTH (btowc (int __c)) 386 { return (__builtin_constant_p (__c) && __c >= '\0' && __c <= '\x7f' 387 ? (wint_t) __c : __btowc_alias (__c)); } 388 389 extern int __wctob_alias (wint_t __c) __asm ("wctob"); 390 __extern_inline int 391 __NTH (wctob (wint_t __wc)) 392 { return (__builtin_constant_p (__wc) && __wc >= L'\0' && __wc <= L'\x7f' 393 ? (int) __wc : __wctob_alias (__wc)); } 394 395 __extern_inline size_t 396 __NTH (mbrlen (__const char *__restrict __s, size_t __n, 397 mbstate_t *__restrict __ps)) 398 { return (__ps != NULL 399 ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); } 400 #endif 401 402 __BEGIN_NAMESPACE_STD 403 /* Write wide character representation of multibyte character string 404 SRC to DST. */ 405 extern size_t mbsrtowcs (wchar_t *__restrict __dst, 406 __const char **__restrict __src, size_t __len, 407 mbstate_t *__restrict __ps) __THROW; 408 409 /* Write multibyte character representation of wide character string 410 SRC to DST. */ 411 extern size_t wcsrtombs (char *__restrict __dst, 412 __const wchar_t **__restrict __src, size_t __len, 413 mbstate_t *__restrict __ps) __THROW; 414 __END_NAMESPACE_STD 415 416 417 #ifdef __USE_XOPEN2K8 418 /* Write wide character representation of at most NMC bytes of the 419 multibyte character string SRC to DST. */ 420 extern size_t mbsnrtowcs (wchar_t *__restrict __dst, 421 __const char **__restrict __src, size_t __nmc, 422 size_t __len, mbstate_t *__restrict __ps) __THROW; 423 424 /* Write multibyte character representation of at most NWC characters 425 from the wide character string SRC to DST. */ 426 extern size_t wcsnrtombs (char *__restrict __dst, 427 __const wchar_t **__restrict __src, 428 size_t __nwc, size_t __len, 429 mbstate_t *__restrict __ps) __THROW; 430 #endif /* use POSIX 2008 */ 431 432 433 /* The following functions are extensions found in X/Open CAE. */ 434 #ifdef __USE_XOPEN 435 /* Determine number of column positions required for C. */ 436 extern int wcwidth (wchar_t __c) __THROW; 437 438 /* Determine number of column positions required for first N wide 439 characters (or fewer if S ends before this) in S. */ 440 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW; 441 #endif /* Use X/Open. */ 442 443 444 __BEGIN_NAMESPACE_STD 445 /* Convert initial portion of the wide string NPTR to `double' 446 representation. */ 447 extern double wcstod (__const wchar_t *__restrict __nptr, 448 wchar_t **__restrict __endptr) __THROW; 449 __END_NAMESPACE_STD 450 451 #ifdef __USE_ISOC99 452 __BEGIN_NAMESPACE_C99 453 /* Likewise for `float' and `long double' sizes of floating-point numbers. */ 454 extern float wcstof (__const wchar_t *__restrict __nptr, 455 wchar_t **__restrict __endptr) __THROW; 456 extern long double wcstold (__const wchar_t *__restrict __nptr, 457 wchar_t **__restrict __endptr) __THROW; 458 __END_NAMESPACE_C99 459 #endif /* C99 */ 460 461 462 __BEGIN_NAMESPACE_STD 463 /* Convert initial portion of wide string NPTR to `long int' 464 representation. */ 465 extern long int wcstol (__const wchar_t *__restrict __nptr, 466 wchar_t **__restrict __endptr, int __base) __THROW; 467 468 /* Convert initial portion of wide string NPTR to `unsigned long int' 469 representation. */ 470 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr, 471 wchar_t **__restrict __endptr, int __base) 472 __THROW; 473 __END_NAMESPACE_STD 474 475 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU) 476 __BEGIN_NAMESPACE_C99 477 /* Convert initial portion of wide string NPTR to `long long int' 478 representation. */ 479 __extension__ 480 extern long long int wcstoll (__const wchar_t *__restrict __nptr, 481 wchar_t **__restrict __endptr, int __base) 482 __THROW; 483 484 /* Convert initial portion of wide string NPTR to `unsigned long long int' 485 representation. */ 486 __extension__ 487 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr, 488 wchar_t **__restrict __endptr, 489 int __base) __THROW; 490 __END_NAMESPACE_C99 491 #endif /* ISO C99 or GCC and GNU. */ 492 493 #if defined __GNUC__ && defined __USE_GNU 494 /* Convert initial portion of wide string NPTR to `long long int' 495 representation. */ 496 __extension__ 497 extern long long int wcstoq (__const wchar_t *__restrict __nptr, 498 wchar_t **__restrict __endptr, int __base) 499 __THROW; 500 501 /* Convert initial portion of wide string NPTR to `unsigned long long int' 502 representation. */ 503 __extension__ 504 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr, 505 wchar_t **__restrict __endptr, 506 int __base) __THROW; 507 #endif /* GCC and use GNU. */ 508 509 #ifdef __USE_GNU 510 /* The concept of one static locale per category is not very well 511 thought out. Many applications will need to process its data using 512 information from several different locales. Another application is 513 the implementation of the internationalization handling in the 514 upcoming ISO C++ standard library. To support this another set of 515 the functions using locale data exist which have an additional 516 argument. 517 518 Attention: all these functions are *not* standardized in any form. 519 This is a proof-of-concept implementation. */ 520 521 /* Structure for reentrant locale using functions. This is an 522 (almost) opaque type for the user level programs. */ 523 # include <xlocale.h> 524 525 /* Special versions of the functions above which take the locale to 526 use as an additional parameter. */ 527 extern long int wcstol_l (__const wchar_t *__restrict __nptr, 528 wchar_t **__restrict __endptr, int __base, 529 __locale_t __loc) __THROW; 530 531 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr, 532 wchar_t **__restrict __endptr, 533 int __base, __locale_t __loc) __THROW; 534 535 __extension__ 536 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr, 537 wchar_t **__restrict __endptr, 538 int __base, __locale_t __loc) __THROW; 539 540 __extension__ 541 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr, 542 wchar_t **__restrict __endptr, 543 int __base, __locale_t __loc) 544 __THROW; 545 546 extern double wcstod_l (__const wchar_t *__restrict __nptr, 547 wchar_t **__restrict __endptr, __locale_t __loc) 548 __THROW; 549 550 extern float wcstof_l (__const wchar_t *__restrict __nptr, 551 wchar_t **__restrict __endptr, __locale_t __loc) 552 __THROW; 553 554 extern long double wcstold_l (__const wchar_t *__restrict __nptr, 555 wchar_t **__restrict __endptr, 556 __locale_t __loc) __THROW; 557 #endif /* use GNU */ 558 559 560 #ifdef __USE_XOPEN2K8 561 /* Copy SRC to DEST, returning the address of the terminating L'\0' in 562 DEST. */ 563 extern wchar_t *wcpcpy (wchar_t *__restrict __dest, 564 __const wchar_t *__restrict __src) __THROW; 565 566 /* Copy no more than N characters of SRC to DEST, returning the address of 567 the last character written into DEST. */ 568 extern wchar_t *wcpncpy (wchar_t *__restrict __dest, 569 __const wchar_t *__restrict __src, size_t __n) 570 __THROW; 571 572 573 /* Wide character I/O functions. */ 574 575 /* Like OPEN_MEMSTREAM, but the stream is wide oriented and produces 576 a wide character string. */ 577 extern __FILE *open_wmemstream (wchar_t **__bufloc, size_t *__sizeloc) __THROW; 578 #endif 579 580 #if defined __USE_ISOC95 || defined __USE_UNIX98 581 __BEGIN_NAMESPACE_STD 582 583 /* Select orientation for stream. */ 584 extern int fwide (__FILE *__fp, int __mode) __THROW; 585 586 587 /* Write formatted output to STREAM. 588 589 This function is a possible cancellation point and therefore not 590 marked with __THROW. */ 591 extern int fwprintf (__FILE *__restrict __stream, 592 __const wchar_t *__restrict __format, ...) 593 /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */; 594 /* Write formatted output to stdout. 595 596 This function is a possible cancellation point and therefore not 597 marked with __THROW. */ 598 extern int wprintf (__const wchar_t *__restrict __format, ...) 599 /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */; 600 /* Write formatted output of at most N characters to S. */ 601 extern int swprintf (wchar_t *__restrict __s, size_t __n, 602 __const wchar_t *__restrict __format, ...) 603 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */; 604 605 /* Write formatted output to S from argument list ARG. 606 607 This function is a possible cancellation point and therefore not 608 marked with __THROW. */ 609 extern int vfwprintf (__FILE *__restrict __s, 610 __const wchar_t *__restrict __format, 611 __gnuc_va_list __arg) 612 /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */; 613 /* Write formatted output to stdout from argument list ARG. 614 615 This function is a possible cancellation point and therefore not 616 marked with __THROW. */ 617 extern int vwprintf (__const wchar_t *__restrict __format, 618 __gnuc_va_list __arg) 619 /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */; 620 /* Write formatted output of at most N character to S from argument 621 list ARG. */ 622 extern int vswprintf (wchar_t *__restrict __s, size_t __n, 623 __const wchar_t *__restrict __format, 624 __gnuc_va_list __arg) 625 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */; 626 627 628 /* Read formatted input from STREAM. 629 630 This function is a possible cancellation point and therefore not 631 marked with __THROW. */ 632 extern int fwscanf (__FILE *__restrict __stream, 633 __const wchar_t *__restrict __format, ...) 634 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 635 /* Read formatted input from stdin. 636 637 This function is a possible cancellation point and therefore not 638 marked with __THROW. */ 639 extern int wscanf (__const wchar_t *__restrict __format, ...) 640 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */; 641 /* Read formatted input from S. */ 642 extern int swscanf (__const wchar_t *__restrict __s, 643 __const wchar_t *__restrict __format, ...) 644 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 645 646 # if defined __USE_ISOC99 && !defined __USE_GNU \ 647 && (!defined __LDBL_COMPAT || !defined __REDIRECT) \ 648 && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K) 649 # ifdef __REDIRECT 650 /* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[ 651 GNU extension which conflicts with valid %a followed by letter 652 s, S or [. */ 653 extern int __REDIRECT (fwscanf, (__FILE *__restrict __stream, 654 __const wchar_t *__restrict __format, ...), 655 __isoc99_fwscanf) 656 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 657 extern int __REDIRECT (wscanf, (__const wchar_t *__restrict __format, ...), 658 __isoc99_wscanf) 659 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */; 660 extern int __REDIRECT_NTH (swscanf, (__const wchar_t *__restrict __s, 661 __const wchar_t *__restrict __format, 662 ...), __isoc99_swscanf) 663 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 664 # else 665 extern int __isoc99_fwscanf (__FILE *__restrict __stream, 666 __const wchar_t *__restrict __format, ...); 667 extern int __isoc99_wscanf (__const wchar_t *__restrict __format, ...); 668 extern int __isoc99_swscanf (__const wchar_t *__restrict __s, 669 __const wchar_t *__restrict __format, ...) 670 __THROW; 671 # define fwscanf __isoc99_fwscanf 672 # define wscanf __isoc99_wscanf 673 # define swscanf __isoc99_swscanf 674 # endif 675 # endif 676 677 __END_NAMESPACE_STD 678 #endif /* Use ISO C95, C99 and Unix98. */ 679 680 #ifdef __USE_ISOC99 681 __BEGIN_NAMESPACE_C99 682 /* Read formatted input from S into argument list ARG. 683 684 This function is a possible cancellation point and therefore not 685 marked with __THROW. */ 686 extern int vfwscanf (__FILE *__restrict __s, 687 __const wchar_t *__restrict __format, 688 __gnuc_va_list __arg) 689 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 690 /* Read formatted input from stdin into argument list ARG. 691 692 This function is a possible cancellation point and therefore not 693 marked with __THROW. */ 694 extern int vwscanf (__const wchar_t *__restrict __format, 695 __gnuc_va_list __arg) 696 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */; 697 /* Read formatted input from S into argument list ARG. */ 698 extern int vswscanf (__const wchar_t *__restrict __s, 699 __const wchar_t *__restrict __format, 700 __gnuc_va_list __arg) 701 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 702 703 # if !defined __USE_GNU \ 704 && (!defined __LDBL_COMPAT || !defined __REDIRECT) \ 705 && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K) 706 # ifdef __REDIRECT 707 extern int __REDIRECT (vfwscanf, (__FILE *__restrict __s, 708 __const wchar_t *__restrict __format, 709 __gnuc_va_list __arg), __isoc99_vfwscanf) 710 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 711 extern int __REDIRECT (vwscanf, (__const wchar_t *__restrict __format, 712 __gnuc_va_list __arg), __isoc99_vwscanf) 713 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */; 714 extern int __REDIRECT_NTH (vswscanf, (__const wchar_t *__restrict __s, 715 __const wchar_t *__restrict __format, 716 __gnuc_va_list __arg), __isoc99_vswscanf) 717 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 718 # else 719 extern int __isoc99_vfwscanf (__FILE *__restrict __s, 720 __const wchar_t *__restrict __format, 721 __gnuc_va_list __arg); 722 extern int __isoc99_vwscanf (__const wchar_t *__restrict __format, 723 __gnuc_va_list __arg); 724 extern int __isoc99_vswscanf (__const wchar_t *__restrict __s, 725 __const wchar_t *__restrict __format, 726 __gnuc_va_list __arg) __THROW; 727 # define vfwscanf __isoc99_vfwscanf 728 # define vwscanf __isoc99_vwscanf 729 # define vswscanf __isoc99_vswscanf 730 # endif 731 # endif 732 733 __END_NAMESPACE_C99 734 #endif /* Use ISO C99. */ 735 736 737 __BEGIN_NAMESPACE_STD 738 /* Read a character from STREAM. 739 740 These functions are possible cancellation points and therefore not 741 marked with __THROW. */ 742 extern wint_t fgetwc (__FILE *__stream); 743 extern wint_t getwc (__FILE *__stream); 744 745 /* Read a character from stdin. 746 747 This function is a possible cancellation point and therefore not 748 marked with __THROW. */ 749 extern wint_t getwchar (void); 750 751 752 /* Write a character to STREAM. 753 754 These functions are possible cancellation points and therefore not 755 marked with __THROW. */ 756 extern wint_t fputwc (wchar_t __wc, __FILE *__stream); 757 extern wint_t putwc (wchar_t __wc, __FILE *__stream); 758 759 /* Write a character to stdout. 760 761 This function is a possible cancellation point and therefore not 762 marked with __THROW. */ 763 extern wint_t putwchar (wchar_t __wc); 764 765 766 /* Get a newline-terminated wide character string of finite length 767 from STREAM. 768 769 This function is a possible cancellation point and therefore not 770 marked with __THROW. */ 771 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n, 772 __FILE *__restrict __stream); 773 774 /* Write a string to STREAM. 775 776 This function is a possible cancellation point and therefore not 777 marked with __THROW. */ 778 extern int fputws (__const wchar_t *__restrict __ws, 779 __FILE *__restrict __stream); 780 781 782 /* Push a character back onto the input buffer of STREAM. 783 784 This function is a possible cancellation point and therefore not 785 marked with __THROW. */ 786 extern wint_t ungetwc (wint_t __wc, __FILE *__stream); 787 __END_NAMESPACE_STD 788 789 790 #ifdef __USE_GNU 791 /* These are defined to be equivalent to the `char' functions defined 792 in POSIX.1:1996. 793 794 These functions are not part of POSIX and therefore no official 795 cancellation point. But due to similarity with an POSIX interface 796 or due to the implementation they are cancellation points and 797 therefore not marked with __THROW. */ 798 extern wint_t getwc_unlocked (__FILE *__stream); 799 extern wint_t getwchar_unlocked (void); 800 801 /* This is the wide character version of a GNU extension. 802 803 This function is not part of POSIX and therefore no official 804 cancellation point. But due to similarity with an POSIX interface 805 or due to the implementation it is a cancellation point and 806 therefore not marked with __THROW. */ 807 extern wint_t fgetwc_unlocked (__FILE *__stream); 808 809 /* Faster version when locking is not necessary. 810 811 This function is not part of POSIX and therefore no official 812 cancellation point. But due to similarity with an POSIX interface 813 or due to the implementation it is a cancellation point and 814 therefore not marked with __THROW. */ 815 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream); 816 817 /* These are defined to be equivalent to the `char' functions defined 818 in POSIX.1:1996. 819 820 These functions are not part of POSIX and therefore no official 821 cancellation point. But due to similarity with an POSIX interface 822 or due to the implementation they are cancellation points and 823 therefore not marked with __THROW. */ 824 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream); 825 extern wint_t putwchar_unlocked (wchar_t __wc); 826 827 828 /* This function does the same as `fgetws' but does not lock the stream. 829 830 This function is not part of POSIX and therefore no official 831 cancellation point. But due to similarity with an POSIX interface 832 or due to the implementation it is a cancellation point and 833 therefore not marked with __THROW. */ 834 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n, 835 __FILE *__restrict __stream); 836 837 /* This function does the same as `fputws' but does not lock the stream. 838 839 This function is not part of POSIX and therefore no official 840 cancellation point. But due to similarity with an POSIX interface 841 or due to the implementation it is a cancellation point and 842 therefore not marked with __THROW. */ 843 extern int fputws_unlocked (__const wchar_t *__restrict __ws, 844 __FILE *__restrict __stream); 845 #endif 846 847 848 __BEGIN_NAMESPACE_C99 849 /* Format TP into S according to FORMAT. 850 Write no more than MAXSIZE wide characters and return the number 851 of wide characters written, or 0 if it would exceed MAXSIZE. */ 852 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize, 853 __const wchar_t *__restrict __format, 854 __const struct tm *__restrict __tp) __THROW; 855 __END_NAMESPACE_C99 856 857 # ifdef __USE_GNU 858 # include <xlocale.h> 859 860 /* Similar to `wcsftime' but takes the information from 861 the provided locale and not the global locale. */ 862 extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize, 863 __const wchar_t *__restrict __format, 864 __const struct tm *__restrict __tp, 865 __locale_t __loc) __THROW; 866 # endif 867 868 /* The X/Open standard demands that most of the functions defined in 869 the <wctype.h> header must also appear here. This is probably 870 because some X/Open members wrote their implementation before the 871 ISO C standard was published and introduced the better solution. 872 We have to provide these definitions for compliance reasons but we 873 do this nonsense only if really necessary. */ 874 #if defined __USE_UNIX98 && !defined __USE_GNU 875 # define __need_iswxxx 876 # include <wctype.h> 877 #endif 878 879 /* Define some macros helping to catch buffer overflows. */ 880 #if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline 881 # include <bits/wchar2.h> 882 #endif 883 884 #ifdef __LDBL_COMPAT 885 # include <bits/wchar-ldbl.h> 886 #endif 887 888 __END_DECLS 889 890 #endif /* _WCHAR_H defined */ 891 892 #endif /* wchar.h */ 893 894 /* Undefine all __need_* constants in case we are included to get those 895 constants but the whole file was already read. */ 896 #undef __need_mbstate_t 897 #undef __need_wint_t 898
