1 /* Copyright (C) 1995-1999, 2000, 2001 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 #ifndef __need_mbstate_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 <libio/stdio.h> 38 /* Get va_list definition. */ 39 # define __need___va_list 40 # include <stdarg.h> 41 42 /* Get size_t, wchar_t, wint_t and NULL from <stddef.h>. */ 43 # define __need_size_t 44 # define __need_wchar_t 45 # define __need_NULL 46 #endif 47 #define __need_wint_t 48 #include <stddef.h> 49 50 #include <bits/wchar.h> 51 52 /* We try to get wint_t from <stddef.h>, but not all GCC versions define it 53 there. So define it ourselves if it remains undefined. */ 54 #ifndef _WINT_T 55 /* Integral type unchanged by default argument promotions that can 56 hold any value corresponding to members of the extended character 57 set, as well as at least one value that does not correspond to any 58 member of the extended character set. */ 59 # define _WINT_T 60 typedef unsigned int wint_t; 61 #endif 62 63 64 #ifndef __mbstate_t_defined 65 # define __mbstate_t_defined 1 66 /* Conversion state information. */ 67 typedef struct 68 { 69 int __count; 70 union 71 { 72 wint_t __wch; 73 char __wchb[4]; 74 } __value; /* Value so far. */ 75 } __mbstate_t; 76 #endif 77 #undef __need_mbstate_t 78 79 80 /* The rest of the file is only used if used if __need_mbstate_t is not 81 defined. */ 82 #ifdef _WCHAR_H 83 84 /* Public type. */ 85 typedef __mbstate_t mbstate_t; 86 87 #ifndef WCHAR_MIN 88 /* These constants might also be defined in <inttypes.h>. */ 89 # define WCHAR_MIN __WCHAR_MIN 90 # define WCHAR_MAX __WCHAR_MAX 91 #endif 92 93 #ifndef WEOF 94 # define WEOF (0xffffffffu) 95 #endif 96 97 /* For XPG4 compliance we have to define the stuff from <wctype.h> here 98 as well. */ 99 #if defined __USE_XOPEN && !defined __USE_UNIX98 100 # include <wctype.h> 101 #endif 102 103 /* This incomplete type is defined in <time.h> but needed here because 104 of `wcsftime'. */ 105 struct tm; 106 107 108 __BEGIN_DECLS 109 110 /* Copy SRC to DEST. */ 111 extern wchar_t *wcscpy (wchar_t *__restrict __dest, 112 __const wchar_t *__restrict __src) __THROW; 113 /* Copy no more than N wide-characters of SRC to DEST. */ 114 extern wchar_t *wcsncpy (wchar_t *__restrict __dest, 115 __const wchar_t *__restrict __src, size_t __n) 116 __THROW; 117 118 /* Append SRC onto DEST. */ 119 extern wchar_t *wcscat (wchar_t *__restrict __dest, 120 __const wchar_t *__restrict __src) __THROW; 121 /* Append no more than N wide-characters of SRC onto DEST. */ 122 extern wchar_t *wcsncat (wchar_t *__restrict __dest, 123 __const wchar_t *__restrict __src, size_t __n) 124 __THROW; 125 126 /* Compare S1 and S2. */ 127 extern int wcscmp (__const wchar_t *__s1, __const wchar_t *__s2) 128 __THROW __attribute_pure__; 129 /* Compare N wide-characters of S1 and S2. */ 130 extern int wcsncmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n) 131 __THROW __attribute_pure__; 132 133 #ifdef __USE_GNU 134 /* Compare S1 and S2, ignoring case. */ 135 extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW; 136 137 /* Compare no more than N chars of S1 and S2, ignoring case. */ 138 extern int wcsncasecmp (__const wchar_t *__s1, __const wchar_t *__s2, 139 size_t __n) __THROW; 140 141 /* Similar to the two functions above but take the information from 142 the provided locale and not the global locale. */ 143 # include <xlocale.h> 144 145 extern int __wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2, 146 __locale_t __loc) __THROW; 147 148 extern int __wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2, 149 size_t __n, __locale_t __loc) __THROW; 150 #endif 151 152 /* Compare S1 and S2, both interpreted as appropriate to the 153 LC_COLLATE category of the current locale. */ 154 extern int wcscoll (__const wchar_t *__s1, __const wchar_t *__s2) __THROW; 155 /* Transform S2 into array pointed to by S1 such that if wcscmp is 156 applied to two transformed strings the result is the as applying 157 `wcscoll' to the original strings. */ 158 extern size_t wcsxfrm (wchar_t *__restrict __s1, 159 __const wchar_t *__restrict __s2, size_t __n) __THROW; 160 161 #ifdef __USE_GNU 162 /* Similar to the two functions above but take the information from 163 the provided locale and not the global locale. */ 164 165 /* Compare S1 and S2, both interpreted as appropriate to the 166 LC_COLLATE category of the given locale. */ 167 extern int __wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2, 168 __locale_t __loc) __THROW; 169 /* Transform S2 into array pointed to by S1 such that if wcscmp is 170 applied to two transformed strings the result is the as applying 171 `wcscoll' to the original strings. */ 172 extern size_t __wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2, 173 size_t __n, __locale_t __loc) __THROW; 174 175 /* Duplicate S, returning an identical malloc'd string. */ 176 extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__; 177 #endif 178 179 /* Find the first occurrence of WC in WCS. */ 180 extern wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc) 181 __THROW __attribute_pure__; 182 /* Find the last occurrence of WC in WCS. */ 183 extern wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc) 184 __THROW __attribute_pure__; 185 186 #ifdef __USE_GNU 187 /* This function is similar to `wcschr'. But it returns a pointer to 188 the closing NUL wide character in case C is not found in S. */ 189 extern wchar_t *wcschrnul (__const wchar_t *__s, wchar_t __wc) 190 __THROW __attribute_pure__; 191 #endif 192 193 /* Return the length of the initial segmet of WCS which 194 consists entirely of wide characters not in REJECT. */ 195 extern size_t wcscspn (__const wchar_t *__wcs, __const wchar_t *__reject) 196 __THROW __attribute_pure__; 197 /* Return the length of the initial segmet of WCS which 198 consists entirely of wide characters in ACCEPT. */ 199 extern size_t wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept) 200 __THROW __attribute_pure__; 201 /* Find the first occurrence in WCS of any character in ACCEPT. */ 202 extern wchar_t *wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept) 203 __THROW __attribute_pure__; 204 /* Find the first occurrence of NEEDLE in HAYSTACK. */ 205 extern wchar_t *wcsstr (__const wchar_t *__haystack, __const wchar_t *__needle) 206 __THROW __attribute_pure__; 207 208 #ifdef __USE_XOPEN 209 /* Another name for `wcsstr' from XPG4. */ 210 extern wchar_t *wcswcs (__const wchar_t *__haystack, __const wchar_t *__needle) 211 __THROW __attribute_pure__; 212 #endif 213 214 /* Divide WCS into tokens separated by characters in DELIM. */ 215 extern wchar_t *wcstok (wchar_t *__restrict __s, 216 __const wchar_t *__restrict __delim, 217 wchar_t **__restrict __ptr) __THROW; 218 219 /* Return the number of wide characters in S. */ 220 extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__; 221 222 #ifdef __USE_GNU 223 /* Return the number of wide characters in S, but at most MAXLEN. */ 224 extern size_t wcsnlen (__const wchar_t *__s, size_t __maxlen) 225 __THROW __attribute_pure__; 226 #endif 227 228 229 /* Search N wide characters of S for C. */ 230 extern wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, size_t __n) 231 __THROW __attribute_pure__; 232 233 /* Compare N wide characters of S1 and S2. */ 234 extern int wmemcmp (__const wchar_t *__restrict __s1, 235 __const wchar_t *__restrict __s2, size_t __n) 236 __THROW __attribute_pure__; 237 238 /* Copy N wide characters of SRC to DEST. */ 239 extern wchar_t *wmemcpy (wchar_t *__restrict __s1, 240 __const wchar_t *__restrict __s2, size_t __n) __THROW; 241 242 /* Copy N wide characters of SRC to DEST, guaranteeing 243 correct behavior for overlapping strings. */ 244 extern wchar_t *wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n) 245 __THROW; 246 247 /* Set N wide characters of S to C. */ 248 extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW; 249 250 #ifdef __USE_GNU 251 /* Copy N wide characters of SRC to DEST and return pointer to following 252 wide character. */ 253 extern wchar_t *wmempcpy (wchar_t *__restrict __s1, 254 __const wchar_t *__restrict __s2, size_t __n) 255 __THROW; 256 #endif 257 258 259 /* Determine whether C constitutes a valid (one-byte) multibyte 260 character. */ 261 extern wint_t btowc (int __c) __THROW; 262 263 /* Determine whether C corresponds to a member of the extended 264 character set whose multibyte representation is a single byte. */ 265 extern int wctob (wint_t __c) __THROW; 266 267 /* Determine whether PS points to an object representing the initial 268 state. */ 269 extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__; 270 271 /* Write wide character representation of multibyte character pointed 272 to by S to PWC. */ 273 extern size_t mbrtowc (wchar_t *__restrict __pwc, 274 __const char *__restrict __s, size_t __n, 275 mbstate_t *__p) __THROW; 276 277 /* Write multibyte representation of wide character WC to S. */ 278 extern size_t wcrtomb (char *__restrict __s, wchar_t __wc, 279 mbstate_t *__restrict __ps) __THROW; 280 281 /* Return number of bytes in multibyte character pointed to by S. */ 282 extern size_t __mbrlen (__const char *__restrict __s, size_t __n, 283 mbstate_t *__restrict __ps) __THROW; 284 extern size_t mbrlen (__const char *__restrict __s, size_t __n, 285 mbstate_t *__restrict __ps) __THROW; 286 287 #ifdef __USE_EXTERN_INLINES 288 /* Define inline function as optimization. */ 289 extern __inline size_t mbrlen (__const char *__restrict __s, size_t __n, 290 mbstate_t *__restrict __ps) __THROW 291 { return (__ps != NULL 292 ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); } 293 #endif 294 295 /* Write wide character representation of multibyte character string 296 SRC to DST. */ 297 extern size_t mbsrtowcs (wchar_t *__restrict __dst, 298 __const char **__restrict __src, size_t __len, 299 mbstate_t *__restrict __ps) __THROW; 300 301 /* Write multibyte character representation of wide character string 302 SRC to DST. */ 303 extern size_t wcsrtombs (char *__restrict __dst, 304 __const wchar_t **__restrict __src, size_t __len, 305 mbstate_t *__restrict __ps) __THROW; 306 307 308 #ifdef __USE_GNU 309 /* Write wide character representation of at most NMC bytes of the 310 multibyte character string SRC to DST. */ 311 extern size_t mbsnrtowcs (wchar_t *__restrict __dst, 312 __const char **__restrict __src, size_t __nmc, 313 size_t __len, mbstate_t *__restrict __ps) __THROW; 314 315 /* Write multibyte character representation of at most NWC characters 316 from the wide character string SRC to DST. */ 317 extern size_t wcsnrtombs (char *__restrict __dst, 318 __const wchar_t **__restrict __src, 319 size_t __nwc, size_t __len, 320 mbstate_t *__restrict __ps) __THROW; 321 #endif /* use GNU */ 322 323 324 /* The following functions are extensions found in X/Open CAE. */ 325 #ifdef __USE_XOPEN 326 /* Determine number of column positions required for C. */ 327 extern int wcwidth (wchar_t __c) __THROW; 328 329 /* Determine number of column positions required for first N wide 330 characters (or fewer if S ends before this) in S. */ 331 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW; 332 #endif /* Use X/Open. */ 333 334 335 /* Convert initial portion of the wide string NPTR to `double' 336 representation. */ 337 extern double wcstod (__const wchar_t *__restrict __nptr, 338 wchar_t **__restrict __endptr) __THROW; 339 340 #ifdef __USE_ISOC99 341 /* Likewise for `float' and `long double' sizes of floating-point numbers. */ 342 extern float wcstof (__const wchar_t *__restrict __nptr, 343 wchar_t **__restrict __endptr) __THROW; 344 extern long double wcstold (__const wchar_t *__restrict __nptr, 345 wchar_t **__restrict __endptr) __THROW; 346 #endif /* C99 */ 347 348 349 /* Convert initial portion of wide string NPTR to `long int' 350 representation. */ 351 extern long int wcstol (__const wchar_t *__restrict __nptr, 352 wchar_t **__restrict __endptr, int __base) __THROW; 353 354 /* Convert initial portion of wide string NPTR to `unsigned long int' 355 representation. */ 356 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr, 357 wchar_t **__restrict __endptr, int __base) 358 __THROW; 359 360 #if defined __GNUC__ && defined __USE_GNU 361 /* Convert initial portion of wide string NPTR to `long int' 362 representation. */ 363 __extension__ 364 extern long long int wcstoq (__const wchar_t *__restrict __nptr, 365 wchar_t **__restrict __endptr, int __base) 366 __THROW; 367 368 /* Convert initial portion of wide string NPTR to `unsigned long long int' 369 representation. */ 370 __extension__ 371 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr, 372 wchar_t **__restrict __endptr, 373 int __base) __THROW; 374 #endif /* GCC and use GNU. */ 375 376 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU) 377 /* Convert initial portion of wide string NPTR to `long int' 378 representation. */ 379 __extension__ 380 extern long long int wcstoll (__const wchar_t *__restrict __nptr, 381 wchar_t **__restrict __endptr, int __base) 382 __THROW; 383 384 /* Convert initial portion of wide string NPTR to `unsigned long long int' 385 representation. */ 386 __extension__ 387 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr, 388 wchar_t **__restrict __endptr, 389 int __base) __THROW; 390 #endif /* ISO C99 or GCC and GNU. */ 391 392 #ifdef __USE_GNU 393 /* The concept of one static locale per category is not very well 394 thought out. Many applications will need to process its data using 395 information from several different locales. Another application is 396 the implementation of the internationalization handling in the 397 upcoming ISO C++ standard library. To support this another set of 398 the functions using locale data exist which have an additional 399 argument. 400 401 Attention: all these functions are *not* standardized in any form. 402 This is a proof-of-concept implementation. */ 403 404 /* Structure for reentrant locale using functions. This is an 405 (almost) opaque type for the user level programs. */ 406 # include <xlocale.h> 407 408 /* Special versions of the functions above which take the locale to 409 use as an additional parameter. */ 410 extern long int __wcstol_l (__const wchar_t *__restrict __nptr, 411 wchar_t **__restrict __endptr, int __base, 412 __locale_t __loc) __THROW; 413 414 extern unsigned long int __wcstoul_l (__const wchar_t *__restrict __nptr, 415 wchar_t **__restrict __endptr, 416 int __base, __locale_t __loc) __THROW; 417 418 __extension__ 419 extern long long int __wcstoll_l (__const wchar_t *__restrict __nptr, 420 wchar_t **__restrict __endptr, 421 int __base, __locale_t __loc) __THROW; 422 423 __extension__ 424 extern unsigned long long int __wcstoull_l (__const wchar_t *__restrict __nptr, 425 wchar_t **__restrict __endptr, 426 int __base, __locale_t __loc) 427 __THROW; 428 429 extern double __wcstod_l (__const wchar_t *__restrict __nptr, 430 wchar_t **__restrict __endptr, __locale_t __loc) 431 __THROW; 432 433 extern float __wcstof_l (__const wchar_t *__restrict __nptr, 434 wchar_t **__restrict __endptr, __locale_t __loc) 435 __THROW; 436 437 extern long double __wcstold_l (__const wchar_t *__restrict __nptr, 438 wchar_t **__restrict __endptr, 439 __locale_t __loc) __THROW; 440 #endif /* GNU */ 441 442 443 /* The internal entry points for `wcstoX' take an extra flag argument 444 saying whether or not to parse locale-dependent number grouping. */ 445 extern double __wcstod_internal (__const wchar_t *__restrict __nptr, 446 wchar_t **__restrict __endptr, int __group) 447 __THROW; 448 extern float __wcstof_internal (__const wchar_t *__restrict __nptr, 449 wchar_t **__restrict __endptr, int __group) 450 __THROW; 451 extern long double __wcstold_internal (__const wchar_t *__restrict __nptr, 452 wchar_t **__restrict __endptr, 453 int __group) __THROW; 454 455 #ifndef __wcstol_internal_defined 456 extern long int __wcstol_internal (__const wchar_t *__restrict __nptr, 457 wchar_t **__restrict __endptr, 458 int __base, int __group) __THROW; 459 # define __wcstol_internal_defined 1 460 #endif 461 #ifndef __wcstoul_internal_defined 462 extern unsigned long int __wcstoul_internal (__const wchar_t *__restrict __npt, 463 wchar_t **__restrict __endptr, 464 int __base, int __group) __THROW; 465 # define __wcstoul_internal_defined 1 466 #endif 467 #ifndef __wcstoll_internal_defined 468 __extension__ 469 extern long long int __wcstoll_internal (__const wchar_t *__restrict __nptr, 470 wchar_t **__restrict __endptr, 471 int __base, int __group) __THROW; 472 # define __wcstoll_internal_defined 1 473 #endif 474 #ifndef __wcstoull_internal_defined 475 __extension__ 476 extern unsigned long long int __wcstoull_internal (__const wchar_t * 477 __restrict __nptr, 478 wchar_t ** 479 __restrict __endptr, 480 int __base, 481 int __group) __THROW; 482 # define __wcstoull_internal_defined 1 483 #endif 484 485 486 #if defined __OPTIMIZE__ && __GNUC__ >= 2 487 /* Define inline functions which call the internal entry points. */ 488 489 extern __inline double wcstod (__const wchar_t *__restrict __nptr, 490 wchar_t **__restrict __endptr) __THROW 491 { return __wcstod_internal (__nptr, __endptr, 0); } 492 extern __inline long int wcstol (__const wchar_t *__restrict __nptr, 493 wchar_t **__restrict __endptr, 494 int __base) __THROW 495 { return __wcstol_internal (__nptr, __endptr, __base, 0); } 496 extern __inline unsigned long int wcstoul (__const wchar_t *__restrict __nptr, 497 wchar_t **__restrict __endptr, 498 int __base) __THROW 499 { return __wcstoul_internal (__nptr, __endptr, __base, 0); } 500 501 # ifdef __USE_GNU 502 extern __inline float wcstof (__const wchar_t *__restrict __nptr, 503 wchar_t **__restrict __endptr) __THROW 504 { return __wcstof_internal (__nptr, __endptr, 0); } 505 extern __inline long double wcstold (__const wchar_t *__restrict __nptr, 506 wchar_t **__restrict __endptr) __THROW 507 { return __wcstold_internal (__nptr, __endptr, 0); } 508 509 510 __extension__ 511 extern __inline long long int wcstoq (__const wchar_t *__restrict __nptr, 512 wchar_t **__restrict __endptr, 513 int __base) __THROW 514 { return __wcstoll_internal (__nptr, __endptr, __base, 0); } 515 __extension__ 516 extern __inline unsigned long long int wcstouq (__const wchar_t * 517 __restrict __nptr, 518 wchar_t **__restrict __endptr, 519 int __base) __THROW 520 { return __wcstoull_internal (__nptr, __endptr, __base, 0); } 521 # endif /* Use GNU. */ 522 #endif /* Optimizing GCC >=2. */ 523 524 525 #ifdef __USE_GNU 526 /* Copy SRC to DEST, returning the address of the terminating L'\0' in 527 DEST. */ 528 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW; 529 530 /* Copy no more than N characters of SRC to DEST, returning the address of 531 the last character written into DEST. */ 532 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n) 533 __THROW; 534 #endif /* use GNU */ 535 536 537 /* Wide character I/O functions. */ 538 #if defined __USE_ISOC99 || defined __USE_UNIX98 539 540 /* Select orientation for stream. */ 541 extern int fwide (__FILE *__fp, int __mode) __THROW; 542 543 544 /* Write formatted output to STREAM. */ 545 extern int fwprintf (__FILE *__restrict __stream, 546 __const wchar_t *__restrict __format, ...) 547 __THROW /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */; 548 /* Write formatted output to stdout. */ 549 extern int wprintf (__const wchar_t *__restrict __format, ...) 550 __THROW /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */; 551 /* Write formatted output of at most N characters to S. */ 552 extern int swprintf (wchar_t *__restrict __s, size_t __n, 553 __const wchar_t *__restrict __format, ...) 554 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */; 555 556 /* Write formatted output to S from argument list ARG. */ 557 extern int vfwprintf (__FILE *__restrict __s, 558 __const wchar_t *__restrict __format, 559 __gnuc_va_list __arg) 560 __THROW /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */; 561 /* Write formatted output to stdout from argument list ARG. */ 562 extern int vwprintf (__const wchar_t *__restrict __format, 563 __gnuc_va_list __arg) 564 __THROW /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */; 565 /* Write formatted output of at most N character to S from argument 566 list ARG. */ 567 extern int vswprintf (wchar_t *__restrict __s, size_t __n, 568 __const wchar_t *__restrict __format, 569 __gnuc_va_list __arg) 570 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */; 571 572 573 /* Read formatted input from STREAM. */ 574 extern int fwscanf (__FILE *__restrict __stream, 575 __const wchar_t *__restrict __format, ...) 576 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 577 /* Read formatted input from stdin. */ 578 extern int wscanf (__const wchar_t *__restrict __format, ...) 579 __THROW /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */; 580 /* Read formatted input from S. */ 581 extern int swscanf (__const wchar_t *__restrict __s, 582 __const wchar_t *__restrict __format, ...) 583 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 584 #endif /* Use ISO C99 and Unix98. */ 585 586 #ifdef __USE_ISOC99 587 /* Read formatted input from S into argument list ARG. */ 588 extern int vfwscanf (__FILE *__restrict __s, 589 __const wchar_t *__restrict __format, 590 __gnuc_va_list __arg) 591 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 592 /* Read formatted input from stdin into argument list ARG. */ 593 extern int vwscanf (__const wchar_t *__restrict __format, 594 __gnuc_va_list __arg) 595 __THROW /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */; 596 /* Read formatted input from S into argument list ARG. */ 597 extern int vswscanf (__const wchar_t *__restrict __s, 598 __const wchar_t *__restrict __format, 599 __gnuc_va_list __arg) 600 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 601 #endif /* Use ISO C99. */ 602 603 604 /* Read a character from STREAM. */ 605 extern wint_t fgetwc (__FILE *__stream) __THROW; 606 extern wint_t getwc (__FILE *__stream) __THROW; 607 608 /* Read a character from stdin. */ 609 extern wint_t getwchar (void) __THROW; 610 611 612 /* Write a character to STREAM. */ 613 extern wint_t fputwc (wchar_t __wc, __FILE *__stream) __THROW; 614 extern wint_t putwc (wchar_t __wc, __FILE *__stream) __THROW; 615 616 /* Write a character to stdout. */ 617 extern wint_t putwchar (wchar_t __wc) __THROW; 618 619 620 /* Get a newline-terminated wide character string of finite length 621 from STREAM. */ 622 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n, 623 __FILE *__restrict __stream) __THROW; 624 625 /* Write a string to STREAM. */ 626 extern int fputws (__const wchar_t *__restrict __ws, 627 __FILE *__restrict __stream) __THROW; 628 629 630 /* Push a character back onto the input buffer of STREAM. */ 631 extern wint_t ungetwc (wint_t __wc, __FILE *__stream) __THROW; 632 633 634 #ifdef __USE_GNU 635 /* These are defined to be equivalent to the `char' functions defined 636 in POSIX.1:1996. */ 637 extern wint_t getwc_unlocked (__FILE *__stream) __THROW; 638 extern wint_t getwchar_unlocked (void) __THROW; 639 640 /* This is the wide character version of a GNU extension. */ 641 extern wint_t fgetwc_unlocked (__FILE *__stream) __THROW; 642 643 /* Faster version when locking is not necessary. */ 644 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream) __THROW; 645 646 /* These are defined to be equivalent to the `char' functions defined 647 in POSIX.1:1996. */ 648 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream) __THROW; 649 extern wint_t putwchar_unlocked (wchar_t __wc) __THROW; 650 651 652 /* This function does the same as `fgetws' but does not lock the stream. */ 653 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n, 654 __FILE *__restrict __stream) __THROW; 655 656 /* This function does the same as `fputws' but does not lock the stream. */ 657 extern int fputws_unlocked (__const wchar_t *__restrict __ws, 658 __FILE *__restrict __stream) __THROW; 659 #endif 660 661 662 /* Format TP into S according to FORMAT. 663 Write no more than MAXSIZE wide characters and return the number 664 of wide characters written, or 0 if it would exceed MAXSIZE. */ 665 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize, 666 __const wchar_t *__restrict __format, 667 __const struct tm *__restrict __tp) __THROW; 668 669 /* The X/Open standard demands that most of the functions defined in 670 the <wctype.h> header must also appear here. This is probably 671 because some X/Open members wrote their implementation before the 672 ISO C standard was published and introduced the better solution. 673 We have to provide these definitions for compliance reasons but we 674 do this nonsense only if really necessary. */ 675 #if defined __USE_UNIX98 && !defined __USE_GNU 676 # define __need_iswxxx 677 # include <wctype.h> 678 #endif 679 680 __END_DECLS 681 682 #endif /* _WCHAR_H defined */ 683 684 #endif /* wchar.h */ 685