1 /* Copyright (C) 1995-2004,2005,2006,2007 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 # ifdef __USE_UNIX98 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 #endif 74 75 #if (defined _WCHAR_H || defined __need_mbstate_t) && !defined __mbstate_t_defined 76 # define __mbstate_t_defined 1 77 /* Conversion state information. */ 78 typedef struct 79 { 80 int __count; 81 union 82 { 83 # ifdef __WINT_TYPE__ 84 __WINT_TYPE__ __wch; 85 # else 86 wint_t __wch; 87 # endif 88 char __wchb[4]; 89 } __value; /* Value so far. */ 90 } __mbstate_t; 91 #endif 92 #undef __need_mbstate_t 93 94 95 /* The rest of the file is only used if used if __need_mbstate_t is not 96 defined. */ 97 #ifdef _WCHAR_H 98 99 __BEGIN_NAMESPACE_C99 100 /* Public type. */ 101 typedef __mbstate_t mbstate_t; 102 __END_NAMESPACE_C99 103 #ifdef __USE_GNU 104 __USING_NAMESPACE_C99(mbstate_t) 105 #endif 106 107 #ifndef WCHAR_MIN 108 /* These constants might also be defined in <inttypes.h>. */ 109 # define WCHAR_MIN __WCHAR_MIN 110 # define WCHAR_MAX __WCHAR_MAX 111 #endif 112 113 #ifndef WEOF 114 # define WEOF (0xffffffffu) 115 #endif 116 117 /* For XPG4 compliance we have to define the stuff from <wctype.h> here 118 as well. */ 119 #if defined __USE_XOPEN && !defined __USE_UNIX98 120 # include <wctype.h> 121 #endif 122 123 124 __BEGIN_DECLS 125 126 __BEGIN_NAMESPACE_STD 127 /* This incomplete type is defined in <time.h> but needed here because 128 of `wcsftime'. */ 129 struct tm; 130 __END_NAMESPACE_STD 131 /* XXX We have to clean this up at some point. Since tm is in the std 132 namespace but wcsftime is in __c99 the type wouldn't be found 133 without inserting it in the global namespace. */ 134 __USING_NAMESPACE_STD(tm) 135 136 137 __BEGIN_NAMESPACE_STD 138 /* Copy SRC to DEST. */ 139 extern wchar_t *wcscpy (wchar_t *__restrict __dest, 140 __const wchar_t *__restrict __src) __THROW; 141 /* Copy no more than N wide-characters of SRC to DEST. */ 142 extern wchar_t *wcsncpy (wchar_t *__restrict __dest, 143 __const wchar_t *__restrict __src, size_t __n) 144 __THROW; 145 146 /* Append SRC onto DEST. */ 147 extern wchar_t *wcscat (wchar_t *__restrict __dest, 148 __const wchar_t *__restrict __src) __THROW; 149 /* Append no more than N wide-characters of SRC onto DEST. */ 150 extern wchar_t *wcsncat (wchar_t *__restrict __dest, 151 __const wchar_t *__restrict __src, size_t __n) 152 __THROW; 153 154 /* Compare S1 and S2. */ 155 extern int wcscmp (__const wchar_t *__s1, __const wchar_t *__s2) 156 __THROW __attribute_pure__; 157 /* Compare N wide-characters of S1 and S2. */ 158 extern int wcsncmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n) 159 __THROW __attribute_pure__; 160 __END_NAMESPACE_STD 161 162 #ifdef __USE_GNU 163 /* Compare S1 and S2, ignoring case. */ 164 extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW; 165 166 /* Compare no more than N chars of S1 and S2, ignoring case. */ 167 extern int wcsncasecmp (__const wchar_t *__s1, __const wchar_t *__s2, 168 size_t __n) __THROW; 169 170 /* Similar to the two functions above but take the information from 171 the provided locale and not the global locale. */ 172 # include <xlocale.h> 173 174 extern int wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2, 175 __locale_t __loc) __THROW; 176 177 extern int wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2, 178 size_t __n, __locale_t __loc) __THROW; 179 #endif 180 181 __BEGIN_NAMESPACE_STD 182 /* Compare S1 and S2, both interpreted as appropriate to the 183 LC_COLLATE category of the current locale. */ 184 extern int wcscoll (__const wchar_t *__s1, __const wchar_t *__s2) __THROW; 185 /* Transform S2 into array pointed to by S1 such that if wcscmp is 186 applied to two transformed strings the result is the as applying 187 `wcscoll' to the original strings. */ 188 extern size_t wcsxfrm (wchar_t *__restrict __s1, 189 __const wchar_t *__restrict __s2, size_t __n) __THROW; 190 __END_NAMESPACE_STD 191 192 #ifdef __USE_GNU 193 /* Similar to the two functions above but take the information from 194 the provided locale and not the global locale. */ 195 196 /* Compare S1 and S2, both interpreted as appropriate to the 197 LC_COLLATE category of the given locale. */ 198 extern int wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2, 199 __locale_t __loc) __THROW; 200 201 /* Transform S2 into array pointed to by S1 such that if wcscmp is 202 applied to two transformed strings the result is the as applying 203 `wcscoll' to the original strings. */ 204 extern size_t wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2, 205 size_t __n, __locale_t __loc) __THROW; 206 207 /* Duplicate S, returning an identical malloc'd string. */ 208 extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__; 209 #endif 210 211 __BEGIN_NAMESPACE_STD 212 /* Find the first occurrence of WC in WCS. */ 213 extern wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc) 214 __THROW __attribute_pure__; 215 /* Find the last occurrence of WC in WCS. */ 216 extern wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc) 217 __THROW __attribute_pure__; 218 __END_NAMESPACE_STD 219 220 #ifdef __USE_GNU 221 /* This function is similar to `wcschr'. But it returns a pointer to 222 the closing NUL wide character in case C is not found in S. */ 223 extern wchar_t *wcschrnul (__const wchar_t *__s, wchar_t __wc) 224 __THROW __attribute_pure__; 225 #endif 226 227 __BEGIN_NAMESPACE_STD 228 /* Return the length of the initial segmet of WCS which 229 consists entirely of wide characters not in REJECT. */ 230 extern size_t wcscspn (__const wchar_t *__wcs, __const wchar_t *__reject) 231 __THROW __attribute_pure__; 232 /* Return the length of the initial segmet of WCS which 233 consists entirely of wide characters in ACCEPT. */ 234 extern size_t wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept) 235 __THROW __attribute_pure__; 236 /* Find the first occurrence in WCS of any character in ACCEPT. */ 237 extern wchar_t *wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept) 238 __THROW __attribute_pure__; 239 /* Find the first occurrence of NEEDLE in HAYSTACK. */ 240 extern wchar_t *wcsstr (__const wchar_t *__haystack, __const wchar_t *__needle) 241 __THROW __attribute_pure__; 242 243 /* Divide WCS into tokens separated by characters in DELIM. */ 244 extern wchar_t *wcstok (wchar_t *__restrict __s, 245 __const wchar_t *__restrict __delim, 246 wchar_t **__restrict __ptr) __THROW; 247 248 /* Return the number of wide characters in S. */ 249 extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__; 250 __END_NAMESPACE_STD 251 252 #ifdef __USE_XOPEN 253 /* Another name for `wcsstr' from XPG4. */ 254 extern wchar_t *wcswcs (__const wchar_t *__haystack, __const wchar_t *__needle) 255 __THROW __attribute_pure__; 256 #endif 257 258 #ifdef __USE_GNU 259 /* Return the number of wide characters in S, but at most MAXLEN. */ 260 extern size_t wcsnlen (__const wchar_t *__s, size_t __maxlen) 261 __THROW __attribute_pure__; 262 #endif 263 264 265 __BEGIN_NAMESPACE_STD 266 /* Search N wide characters of S for C. */ 267 extern wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, size_t __n) 268 __THROW __attribute_pure__; 269 270 /* Compare N wide characters of S1 and S2. */ 271 extern int wmemcmp (__const wchar_t *__restrict __s1, 272 __const wchar_t *__restrict __s2, size_t __n) 273 __THROW __attribute_pure__; 274 275 /* Copy N wide characters of SRC to DEST. */ 276 extern wchar_t *wmemcpy (wchar_t *__restrict __s1, 277 __const wchar_t *__restrict __s2, size_t __n) __THROW; 278 279 /* Copy N wide characters of SRC to DEST, guaranteeing 280 correct behavior for overlapping strings. */ 281 extern wchar_t *wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n) 282 __THROW; 283 284 /* Set N wide characters of S to C. */ 285 extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW; 286 __END_NAMESPACE_STD 287 288 #ifdef __USE_GNU 289 /* Copy N wide characters of SRC to DEST and return pointer to following 290 wide character. */ 291 extern wchar_t *wmempcpy (wchar_t *__restrict __s1, 292 __const wchar_t *__restrict __s2, size_t __n) 293 __THROW; 294 #endif 295 296 297 __BEGIN_NAMESPACE_STD 298 /* Determine whether C constitutes a valid (one-byte) multibyte 299 character. */ 300 extern wint_t btowc (int __c) __THROW; 301 302 /* Determine whether C corresponds to a member of the extended 303 character set whose multibyte representation is a single byte. */ 304 extern int wctob (wint_t __c) __THROW; 305 306 /* Determine whether PS points to an object representing the initial 307 state. */ 308 extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__; 309 310 /* Write wide character representation of multibyte character pointed 311 to by S to PWC. */ 312 extern size_t mbrtowc (wchar_t *__restrict __pwc, 313 __const char *__restrict __s, size_t __n, 314 mbstate_t *__p) __THROW; 315 316 /* Write multibyte representation of wide character WC to S. */ 317 extern size_t wcrtomb (char *__restrict __s, wchar_t __wc, 318 mbstate_t *__restrict __ps) __THROW; 319 320 /* Return number of bytes in multibyte character pointed to by S. */ 321 extern size_t __mbrlen (__const char *__restrict __s, size_t __n, 322 mbstate_t *__restrict __ps) __THROW; 323 extern size_t mbrlen (__const char *__restrict __s, size_t __n, 324 mbstate_t *__restrict __ps) __THROW; 325 __END_NAMESPACE_STD 326 327 #ifdef __USE_EXTERN_INLINES 328 /* Define inline function as optimization. */ 329 330 /* We can use the BTOWC and WCTOB optimizations since we know that all 331 locales must use ASCII encoding for the values in the ASCII range 332 and because the wchar_t encoding is always ISO 10646. */ 333 extern wint_t __btowc_alias (int __c) __asm ("btowc"); 334 __extern_inline wint_t 335 __NTH (btowc (int __c)) 336 { return (__builtin_constant_p (__c) && __c >= '\0' && __c <= '\x7f' 337 ? (wint_t) __c : __btowc_alias (__c)); } 338 339 extern int __wctob_alias (wint_t __c) __asm ("wctob"); 340 __extern_inline int 341 __NTH (wctob (wint_t __wc)) 342 { return (__builtin_constant_p (__wc) && __wc >= L'\0' && __wc <= L'\x7f' 343 ? (int) __wc : __wctob_alias (__wc)); } 344 345 __extern_inline size_t 346 __NTH (mbrlen (__const char *__restrict __s, size_t __n, 347 mbstate_t *__restrict __ps)) 348 { return (__ps != NULL 349 ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); } 350 #endif 351 352 __BEGIN_NAMESPACE_STD 353 /* Write wide character representation of multibyte character string 354 SRC to DST. */ 355 extern size_t mbsrtowcs (wchar_t *__restrict __dst, 356 __const char **__restrict __src, size_t __len, 357 mbstate_t *__restrict __ps) __THROW; 358 359 /* Write multibyte character representation of wide character string 360 SRC to DST. */ 361 extern size_t wcsrtombs (char *__restrict __dst, 362 __const wchar_t **__restrict __src, size_t __len, 363 mbstate_t *__restrict __ps) __THROW; 364 __END_NAMESPACE_STD 365 366 367 #ifdef __USE_GNU 368 /* Write wide character representation of at most NMC bytes of the 369 multibyte character string SRC to DST. */ 370 extern size_t mbsnrtowcs (wchar_t *__restrict __dst, 371 __const char **__restrict __src, size_t __nmc, 372 size_t __len, mbstate_t *__restrict __ps) __THROW; 373 374 /* Write multibyte character representation of at most NWC characters 375 from the wide character string SRC to DST. */ 376 extern size_t wcsnrtombs (char *__restrict __dst, 377 __const wchar_t **__restrict __src, 378 size_t __nwc, size_t __len, 379 mbstate_t *__restrict __ps) __THROW; 380 #endif /* use GNU */ 381 382 383 /* The following functions are extensions found in X/Open CAE. */ 384 #ifdef __USE_XOPEN 385 /* Determine number of column positions required for C. */ 386 extern int wcwidth (wchar_t __c) __THROW; 387 388 /* Determine number of column positions required for first N wide 389 characters (or fewer if S ends before this) in S. */ 390 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW; 391 #endif /* Use X/Open. */ 392 393 394 __BEGIN_NAMESPACE_STD 395 /* Convert initial portion of the wide string NPTR to `double' 396 representation. */ 397 extern double wcstod (__const wchar_t *__restrict __nptr, 398 wchar_t **__restrict __endptr) __THROW; 399 __END_NAMESPACE_STD 400 401 #ifdef __USE_ISOC99 402 __BEGIN_NAMESPACE_C99 403 /* Likewise for `float' and `long double' sizes of floating-point numbers. */ 404 extern float wcstof (__const wchar_t *__restrict __nptr, 405 wchar_t **__restrict __endptr) __THROW; 406 extern long double wcstold (__const wchar_t *__restrict __nptr, 407 wchar_t **__restrict __endptr) __THROW; 408 __END_NAMESPACE_C99 409 #endif /* C99 */ 410 411 412 __BEGIN_NAMESPACE_STD 413 /* Convert initial portion of wide string NPTR to `long int' 414 representation. */ 415 extern long int wcstol (__const wchar_t *__restrict __nptr, 416 wchar_t **__restrict __endptr, int __base) __THROW; 417 418 /* Convert initial portion of wide string NPTR to `unsigned long int' 419 representation. */ 420 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr, 421 wchar_t **__restrict __endptr, int __base) 422 __THROW; 423 __END_NAMESPACE_STD 424 425 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU) 426 __BEGIN_NAMESPACE_C99 427 /* Convert initial portion of wide string NPTR to `long long int' 428 representation. */ 429 __extension__ 430 extern long long int wcstoll (__const wchar_t *__restrict __nptr, 431 wchar_t **__restrict __endptr, int __base) 432 __THROW; 433 434 /* Convert initial portion of wide string NPTR to `unsigned long long int' 435 representation. */ 436 __extension__ 437 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr, 438 wchar_t **__restrict __endptr, 439 int __base) __THROW; 440 __END_NAMESPACE_C99 441 #endif /* ISO C99 or GCC and GNU. */ 442 443 #if defined __GNUC__ && defined __USE_GNU 444 /* Convert initial portion of wide string NPTR to `long long int' 445 representation. */ 446 __extension__ 447 extern long long int wcstoq (__const wchar_t *__restrict __nptr, 448 wchar_t **__restrict __endptr, int __base) 449 __THROW; 450 451 /* Convert initial portion of wide string NPTR to `unsigned long long int' 452 representation. */ 453 __extension__ 454 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr, 455 wchar_t **__restrict __endptr, 456 int __base) __THROW; 457 #endif /* GCC and use GNU. */ 458 459 #ifdef __USE_GNU 460 /* The concept of one static locale per category is not very well 461 thought out. Many applications will need to process its data using 462 information from several different locales. Another application is 463 the implementation of the internationalization handling in the 464 upcoming ISO C++ standard library. To support this another set of 465 the functions using locale data exist which have an additional 466 argument. 467 468 Attention: all these functions are *not* standardized in any form. 469 This is a proof-of-concept implementation. */ 470 471 /* Structure for reentrant locale using functions. This is an 472 (almost) opaque type for the user level programs. */ 473 # include <xlocale.h> 474 475 /* Special versions of the functions above which take the locale to 476 use as an additional parameter. */ 477 extern long int wcstol_l (__const wchar_t *__restrict __nptr, 478 wchar_t **__restrict __endptr, int __base, 479 __locale_t __loc) __THROW; 480 481 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr, 482 wchar_t **__restrict __endptr, 483 int __base, __locale_t __loc) __THROW; 484 485 __extension__ 486 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr, 487 wchar_t **__restrict __endptr, 488 int __base, __locale_t __loc) __THROW; 489 490 __extension__ 491 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr, 492 wchar_t **__restrict __endptr, 493 int __base, __locale_t __loc) 494 __THROW; 495 496 extern double wcstod_l (__const wchar_t *__restrict __nptr, 497 wchar_t **__restrict __endptr, __locale_t __loc) 498 __THROW; 499 500 extern float wcstof_l (__const wchar_t *__restrict __nptr, 501 wchar_t **__restrict __endptr, __locale_t __loc) 502 __THROW; 503 504 extern long double wcstold_l (__const wchar_t *__restrict __nptr, 505 wchar_t **__restrict __endptr, 506 __locale_t __loc) __THROW; 507 #endif /* GNU */ 508 509 510 #ifdef __USE_GNU 511 /* Copy SRC to DEST, returning the address of the terminating L'\0' in 512 DEST. */ 513 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW; 514 515 /* Copy no more than N characters of SRC to DEST, returning the address of 516 the last character written into DEST. */ 517 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n) 518 __THROW; 519 #endif /* use GNU */ 520 521 522 /* Wide character I/O functions. */ 523 524 #ifdef __USE_GNU 525 /* Like OPEN_MEMSTREAM, but the stream is wide oriented and produces 526 a wide character string. */ 527 extern __FILE *open_wmemstream (wchar_t **__bufloc, size_t *__sizeloc) __THROW; 528 #endif 529 530 #if defined __USE_ISOC95 || defined __USE_UNIX98 531 __BEGIN_NAMESPACE_STD 532 533 /* Select orientation for stream. */ 534 extern int fwide (__FILE *__fp, int __mode) __THROW; 535 536 537 /* Write formatted output to STREAM. 538 539 This function is a possible cancellation point and therefore not 540 marked with __THROW. */ 541 extern int fwprintf (__FILE *__restrict __stream, 542 __const wchar_t *__restrict __format, ...) 543 /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */; 544 /* Write formatted output to stdout. 545 546 This function is a possible cancellation point and therefore not 547 marked with __THROW. */ 548 extern int wprintf (__const wchar_t *__restrict __format, ...) 549 /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */; 550 /* Write formatted output of at most N characters to S. */ 551 extern int swprintf (wchar_t *__restrict __s, size_t __n, 552 __const wchar_t *__restrict __format, ...) 553 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */; 554 555 /* Write formatted output to S from argument list ARG. 556 557 This function is a possible cancellation point and therefore not 558 marked with __THROW. */ 559 extern int vfwprintf (__FILE *__restrict __s, 560 __const wchar_t *__restrict __format, 561 __gnuc_va_list __arg) 562 /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */; 563 /* Write formatted output to stdout from argument list ARG. 564 565 This function is a possible cancellation point and therefore not 566 marked with __THROW. */ 567 extern int vwprintf (__const wchar_t *__restrict __format, 568 __gnuc_va_list __arg) 569 /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */; 570 /* Write formatted output of at most N character to S from argument 571 list ARG. */ 572 extern int vswprintf (wchar_t *__restrict __s, size_t __n, 573 __const wchar_t *__restrict __format, 574 __gnuc_va_list __arg) 575 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */; 576 577 578 /* Read formatted input from STREAM. 579 580 This function is a possible cancellation point and therefore not 581 marked with __THROW. */ 582 extern int fwscanf (__FILE *__restrict __stream, 583 __const wchar_t *__restrict __format, ...) 584 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 585 /* Read formatted input from stdin. 586 587 This function is a possible cancellation point and therefore not 588 marked with __THROW. */ 589 extern int wscanf (__const wchar_t *__restrict __format, ...) 590 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */; 591 /* Read formatted input from S. */ 592 extern int swscanf (__const wchar_t *__restrict __s, 593 __const wchar_t *__restrict __format, ...) 594 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 595 596 # if defined __USE_ISOC99 && !defined __USE_GNU \ 597 && (!defined __LDBL_COMPAT || !defined __REDIRECT) \ 598 && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K) 599 # ifdef __REDIRECT 600 /* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[ 601 GNU extension which conflicts with valid %a followed by letter 602 s, S or [. */ 603 extern int __REDIRECT (fwscanf, (__FILE *__restrict __stream, 604 __const wchar_t *__restrict __format, ...), 605 __isoc99_fwscanf) 606 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 607 extern int __REDIRECT (wscanf, (__const wchar_t *__restrict __format, ...), 608 __isoc99_wscanf) 609 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */; 610 extern int __REDIRECT (swscanf, (__const wchar_t *__restrict __s, 611 __const wchar_t *__restrict __format, ...), 612 __isoc99_swscanf) 613 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 614 # else 615 extern int __isoc99_fwscanf (__FILE *__restrict __stream, 616 __const wchar_t *__restrict __format, ...); 617 extern int __isoc99_wscanf (__const wchar_t *__restrict __format, ...); 618 extern int __isoc99_swscanf (__const wchar_t *__restrict __s, 619 __const wchar_t *__restrict __format, ...) 620 __THROW; 621 # define fwscanf __isoc99_fwscanf 622 # define wscanf __isoc99_wscanf 623 # define swscanf __isoc99_swscanf 624 # endif 625 # endif 626 627 __END_NAMESPACE_STD 628 #endif /* Use ISO C95, C99 and Unix98. */ 629 630 #ifdef __USE_ISOC99 631 __BEGIN_NAMESPACE_C99 632 /* Read formatted input from S into argument list ARG. 633 634 This function is a possible cancellation point and therefore not 635 marked with __THROW. */ 636 extern int vfwscanf (__FILE *__restrict __s, 637 __const wchar_t *__restrict __format, 638 __gnuc_va_list __arg) 639 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 640 /* Read formatted input from stdin into argument list ARG. 641 642 This function is a possible cancellation point and therefore not 643 marked with __THROW. */ 644 extern int vwscanf (__const wchar_t *__restrict __format, 645 __gnuc_va_list __arg) 646 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */; 647 /* Read formatted input from S into argument list ARG. */ 648 extern int vswscanf (__const wchar_t *__restrict __s, 649 __const wchar_t *__restrict __format, 650 __gnuc_va_list __arg) 651 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 652 653 # if !defined __USE_GNU \ 654 && (!defined __LDBL_COMPAT || !defined __REDIRECT) \ 655 && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K) 656 # ifdef __REDIRECT 657 extern int __REDIRECT (vfwscanf, (__FILE *__restrict __s, 658 __const wchar_t *__restrict __format, 659 __gnuc_va_list __arg), __isoc99_vfwscanf) 660 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 661 extern int __REDIRECT (vwscanf, (__const wchar_t *__restrict __format, 662 __gnuc_va_list __arg), __isoc99_vwscanf) 663 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */; 664 extern int __REDIRECT (vswscanf, (__const wchar_t *__restrict __s, 665 __const wchar_t *__restrict __format, 666 __gnuc_va_list __arg), __isoc99_vswscanf) 667 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 668 # else 669 extern int __isoc99_vfwscanf (__FILE *__restrict __s, 670 __const wchar_t *__restrict __format, 671 __gnuc_va_list __arg); 672 extern int __isoc99_vwscanf (__const wchar_t *__restrict __format, 673 __gnuc_va_list __arg); 674 extern int __isoc99_vswscanf (__const wchar_t *__restrict __s, 675 __const wchar_t *__restrict __format, 676 __gnuc_va_list __arg) __THROW; 677 # define vfwscanf __isoc99_vfwscanf 678 # define vwscanf __isoc99_vwscanf 679 # define vswscanf __isoc99_vswscanf 680 # endif 681 # endif 682 683 __END_NAMESPACE_C99 684 #endif /* Use ISO C99. */ 685 686 687 __BEGIN_NAMESPACE_STD 688 /* Read a character from STREAM. 689 690 These functions are possible cancellation points and therefore not 691 marked with __THROW. */ 692 extern wint_t fgetwc (__FILE *__stream); 693 extern wint_t getwc (__FILE *__stream); 694 695 /* Read a character from stdin. 696 697 This function is a possible cancellation point and therefore not 698 marked with __THROW. */ 699 extern wint_t getwchar (void); 700 701 702 /* Write a character to STREAM. 703 704 These functions are possible cancellation points and therefore not 705 marked with __THROW. */ 706 extern wint_t fputwc (wchar_t __wc, __FILE *__stream); 707 extern wint_t putwc (wchar_t __wc, __FILE *__stream); 708 709 /* Write a character to stdout. 710 711 This function is a possible cancellation points and therefore not 712 marked with __THROW. */ 713 extern wint_t putwchar (wchar_t __wc); 714 715 716 /* Get a newline-terminated wide character string of finite length 717 from STREAM. 718 719 This function is a possible cancellation points and therefore not 720 marked with __THROW. */ 721 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n, 722 __FILE *__restrict __stream); 723 724 /* Write a string to STREAM. 725 726 This function is a possible cancellation points and therefore not 727 marked with __THROW. */ 728 extern int fputws (__const wchar_t *__restrict __ws, 729 __FILE *__restrict __stream); 730 731 732 /* Push a character back onto the input buffer of STREAM. 733 734 This function is a possible cancellation points and therefore not 735 marked with __THROW. */ 736 extern wint_t ungetwc (wint_t __wc, __FILE *__stream); 737 __END_NAMESPACE_STD 738 739 740 #ifdef __USE_GNU 741 /* These are defined to be equivalent to the `char' functions defined 742 in POSIX.1:1996. 743 744 These functions are not part of POSIX and therefore no official 745 cancellation point. But due to similarity with an POSIX interface 746 or due to the implementation they are cancellation points and 747 therefore not marked with __THROW. */ 748 extern wint_t getwc_unlocked (__FILE *__stream); 749 extern wint_t getwchar_unlocked (void); 750 751 /* This is the wide character version of a GNU extension. 752 753 This function is not part of POSIX and therefore no official 754 cancellation point. But due to similarity with an POSIX interface 755 or due to the implementation it is a cancellation point and 756 therefore not marked with __THROW. */ 757 extern wint_t fgetwc_unlocked (__FILE *__stream); 758 759 /* Faster version when locking is not necessary. 760 761 This function is not part of POSIX and therefore no official 762 cancellation point. But due to similarity with an POSIX interface 763 or due to the implementation it is a cancellation point and 764 therefore not marked with __THROW. */ 765 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream); 766 767 /* These are defined to be equivalent to the `char' functions defined 768 in POSIX.1:1996. 769 770 These functions are not part of POSIX and therefore no official 771 cancellation point. But due to similarity with an POSIX interface 772 or due to the implementation they are cancellation points and 773 therefore not marked with __THROW. */ 774 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream); 775 extern wint_t putwchar_unlocked (wchar_t __wc); 776 777 778 /* This function does the same as `fgetws' but does not lock the stream. 779 780 This function is not part of POSIX and therefore no official 781 cancellation point. But due to similarity with an POSIX interface 782 or due to the implementation it is a cancellation point and 783 therefore not marked with __THROW. */ 784 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n, 785 __FILE *__restrict __stream); 786 787 /* This function does the same as `fputws' but does not lock the stream. 788 789 This function is not part of POSIX and therefore no official 790 cancellation point. But due to similarity with an POSIX interface 791 or due to the implementation it is a cancellation point and 792 therefore not marked with __THROW. */ 793 extern int fputws_unlocked (__const wchar_t *__restrict __ws, 794 __FILE *__restrict __stream); 795 #endif 796 797 798 __BEGIN_NAMESPACE_C99 799 /* Format TP into S according to FORMAT. 800 Write no more than MAXSIZE wide characters and return the number 801 of wide characters written, or 0 if it would exceed MAXSIZE. */ 802 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize, 803 __const wchar_t *__restrict __format, 804 __const struct tm *__restrict __tp) __THROW; 805 __END_NAMESPACE_C99 806 807 # ifdef __USE_GNU 808 # include <xlocale.h> 809 810 /* Similar to `wcsftime' but takes the information from 811 the provided locale and not the global locale. */ 812 extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize, 813 __const wchar_t *__restrict __format, 814 __const struct tm *__restrict __tp, 815 __locale_t __loc) __THROW; 816 # endif 817 818 /* The X/Open standard demands that most of the functions defined in 819 the <wctype.h> header must also appear here. This is probably 820 because some X/Open members wrote their implementation before the 821 ISO C standard was published and introduced the better solution. 822 We have to provide these definitions for compliance reasons but we 823 do this nonsense only if really necessary. */ 824 #if defined __USE_UNIX98 && !defined __USE_GNU 825 # define __need_iswxxx 826 # include <wctype.h> 827 #endif 828 829 /* Define some macros helping to catch buffer overflows. */ 830 #if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline 831 # include <bits/wchar2.h> 832 #endif 833 834 #ifdef __LDBL_COMPAT 835 # include <bits/wchar-ldbl.h> 836 #endif 837 838 __END_DECLS 839 840 #endif /* _WCHAR_H defined */ 841 842 /* Undefined all __need_* constants in case we are included to get those 843 constants but the whole file was already read. */ 844 #undef __need_mbstate_t 845 #undef __need_wint_t 846 847 #endif /* wchar.h */ 848
