wcsmbs/wchar.h

   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_C99
 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_C99
 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_C99
 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_C99
 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_C99
 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_C99
 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_C99
 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_C99
 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_C99
 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_C99
 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_C99
 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_C99
 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_C99
 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_C99
 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_C99
 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
 400 #ifdef __USE_ISOC99
 401 /* Likewise for `float' and `long double' sizes of floating-point numbers.  */
 402 extern float wcstof (__const wchar_t *__restrict __nptr,
 403                      wchar_t **__restrict __endptr) __THROW;
 404 extern long double wcstold (__const wchar_t *__restrict __nptr,
 405                             wchar_t **__restrict __endptr) __THROW;
 406 #endif /* C99 */
 407
 408
 409 /* Convert initial portion of wide string NPTR to `long int'
 410    representation.  */
 411 extern long int wcstol (__const wchar_t *__restrict __nptr,
 412                         wchar_t **__restrict __endptr, int __base) __THROW;
 413
 414 /* Convert initial portion of wide string NPTR to `unsigned long int'
 415    representation.  */
 416 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
 417                                   wchar_t **__restrict __endptr, int __base)
 418      __THROW;
 419
 420 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)
 421 /* Convert initial portion of wide string NPTR to `long long int'
 422    representation.  */
 423 __extension__
 424 extern long long int wcstoll (__const wchar_t *__restrict __nptr,
 425                               wchar_t **__restrict __endptr, int __base)
 426      __THROW;
 427
 428 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 429    representation.  */
 430 __extension__
 431 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr,
 432                                         wchar_t **__restrict __endptr,
 433                                         int __base) __THROW;
 434 #endif /* ISO C99 or GCC and GNU.  */
 435 __END_NAMESPACE_C99
 436
 437 #if defined __GNUC__ && defined __USE_GNU
 438 /* Convert initial portion of wide string NPTR to `long long int'
 439    representation.  */
 440 __extension__
 441 extern long long int wcstoq (__const wchar_t *__restrict __nptr,
 442                              wchar_t **__restrict __endptr, int __base)
 443      __THROW;
 444
 445 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 446    representation.  */
 447 __extension__
 448 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr,
 449                                        wchar_t **__restrict __endptr,
 450                                        int __base) __THROW;
 451 #endif /* GCC and use GNU.  */
 452
 453 #ifdef __USE_GNU
 454 /* The concept of one static locale per category is not very well
 455    thought out.  Many applications will need to process its data using
 456    information from several different locales.  Another application is
 457    the implementation of the internationalization handling in the
 458    upcoming ISO C++ standard library.  To support this another set of
 459    the functions using locale data exist which have an additional
 460    argument.
 461
 462    Attention: all these functions are *not* standardized in any form.
 463    This is a proof-of-concept implementation.  */
 464
 465 /* Structure for reentrant locale using functions.  This is an
 466    (almost) opaque type for the user level programs.  */
 467 # include <xlocale.h>
 468
 469 /* Special versions of the functions above which take the locale to
 470    use as an additional parameter.  */
 471 extern long int wcstol_l (__const wchar_t *__restrict __nptr,
 472                           wchar_t **__restrict __endptr, int __base,
 473                           __locale_t __loc) __THROW;
 474
 475 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr,
 476                                     wchar_t **__restrict __endptr,
 477                                     int __base, __locale_t __loc) __THROW;
 478
 479 __extension__
 480 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr,
 481                                 wchar_t **__restrict __endptr,
 482                                 int __base, __locale_t __loc) __THROW;
 483
 484 __extension__
 485 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr,
 486                                           wchar_t **__restrict __endptr,
 487                                           int __base, __locale_t __loc)
 488      __THROW;
 489
 490 extern double wcstod_l (__const wchar_t *__restrict __nptr,
 491                         wchar_t **__restrict __endptr, __locale_t __loc)
 492      __THROW;
 493
 494 extern float wcstof_l (__const wchar_t *__restrict __nptr,
 495                        wchar_t **__restrict __endptr, __locale_t __loc)
 496      __THROW;
 497
 498 extern long double wcstold_l (__const wchar_t *__restrict __nptr,
 499                               wchar_t **__restrict __endptr,
 500                               __locale_t __loc) __THROW;
 501 #endif /* GNU */
 502
 503
 504 #ifdef  __USE_GNU
 505 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
 506    DEST.  */
 507 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW;
 508
 509 /* Copy no more than N characters of SRC to DEST, returning the address of
 510    the last character written into DEST.  */
 511 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
 512      __THROW;
 513 #endif  /* use GNU */
 514
 515
 516 /* Wide character I/O functions.  */
 517
 518 #ifdef  __USE_GNU
 519 /* Like OPEN_MEMSTREAM, but the stream is wide oriented and produces
 520    a wide character string.  */
 521 extern __FILE *open_wmemstream (wchar_t **__bufloc, size_t *__sizeloc) __THROW;
 522 #endif
 523
 524 #if defined __USE_ISOC95 || defined __USE_UNIX98
 525 __BEGIN_NAMESPACE_C99
 526
 527 /* Select orientation for stream.  */
 528 extern int fwide (__FILE *__fp, int __mode) __THROW;
 529
 530
 531 /* Write formatted output to STREAM.
 532
 533    This function is a possible cancellation point and therefore not
 534    marked with __THROW.  */
 535 extern int fwprintf (__FILE *__restrict __stream,
 536                      __const wchar_t *__restrict __format, ...)
 537      /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
 538 /* Write formatted output to stdout.
 539
 540    This function is a possible cancellation point and therefore not
 541    marked with __THROW.  */
 542 extern int wprintf (__const wchar_t *__restrict __format, ...)
 543      /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
 544 /* Write formatted output of at most N characters to S.  */
 545 extern int swprintf (wchar_t *__restrict __s, size_t __n,
 546                      __const wchar_t *__restrict __format, ...)
 547      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
 548
 549 /* Write formatted output to S from argument list ARG.
 550
 551    This function is a possible cancellation point and therefore not
 552    marked with __THROW.  */
 553 extern int vfwprintf (__FILE *__restrict __s,
 554                       __const wchar_t *__restrict __format,
 555                       __gnuc_va_list __arg)
 556      /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
 557 /* Write formatted output to stdout from argument list ARG.
 558
 559    This function is a possible cancellation point and therefore not
 560    marked with __THROW.  */
 561 extern int vwprintf (__const wchar_t *__restrict __format,
 562                      __gnuc_va_list __arg)
 563      /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
 564 /* Write formatted output of at most N character to S from argument
 565    list ARG.  */
 566 extern int vswprintf (wchar_t *__restrict __s, size_t __n,
 567                       __const wchar_t *__restrict __format,
 568                       __gnuc_va_list __arg)
 569      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
 570
 571
 572 /* Read formatted input from STREAM.
 573
 574    This function is a possible cancellation point and therefore not
 575    marked with __THROW.  */
 576 extern int fwscanf (__FILE *__restrict __stream,
 577                     __const wchar_t *__restrict __format, ...)
 578      /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 579 /* Read formatted input from stdin.
 580
 581    This function is a possible cancellation point and therefore not
 582    marked with __THROW.  */
 583 extern int wscanf (__const wchar_t *__restrict __format, ...)
 584      /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
 585 /* Read formatted input from S.  */
 586 extern int swscanf (__const wchar_t *__restrict __s,
 587                     __const wchar_t *__restrict __format, ...)
 588      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 589
 590 # if defined __USE_ISOC99 && !defined __USE_GNU \
 591      && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
 592      && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
 593 #  ifdef __REDIRECT
 594 /* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
 595    GNU extension which conflicts with valid %a followed by letter
 596    s, S or [.  */
 597 extern int __REDIRECT (fwscanf, (__FILE *__restrict __stream,
 598                                  __const wchar_t *__restrict __format, ...),
 599                        __isoc99_fwscanf)
 600      /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 601 extern int __REDIRECT (wscanf, (__const wchar_t *__restrict __format, ...),
 602                        __isoc99_wscanf)
 603      /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
 604 extern int __REDIRECT (swscanf, (__const wchar_t *__restrict __s,
 605                                  __const wchar_t *__restrict __format, ...),
 606                        __isoc99_swscanf)
 607      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 608 #  else
 609 extern int __isoc99_fwscanf (__FILE *__restrict __stream,
 610                              __const wchar_t *__restrict __format, ...);
 611 extern int __isoc99_wscanf (__const wchar_t *__restrict __format, ...);
 612 extern int __isoc99_swscanf (__const wchar_t *__restrict __s,
 613                              __const wchar_t *__restrict __format, ...)
 614      __THROW;
 615 #   define fwscanf __isoc99_fwscanf
 616 #   define wscanf __isoc99_wscanf
 617 #   define swscanf __isoc99_swscanf
 618 #  endif
 619 # endif
 620
 621 __END_NAMESPACE_C99
 622 #endif /* Use ISO C95, C99 and Unix98. */
 623
 624 #ifdef __USE_ISOC99
 625 __BEGIN_NAMESPACE_C99
 626 /* Read formatted input from S into argument list ARG.
 627
 628    This function is a possible cancellation point and therefore not
 629    marked with __THROW.  */
 630 extern int vfwscanf (__FILE *__restrict __s,
 631                      __const wchar_t *__restrict __format,
 632                      __gnuc_va_list __arg)
 633      /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 634 /* Read formatted input from stdin into argument list ARG.
 635
 636    This function is a possible cancellation point and therefore not
 637    marked with __THROW.  */
 638 extern int vwscanf (__const wchar_t *__restrict __format,
 639                     __gnuc_va_list __arg)
 640      /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
 641 /* Read formatted input from S into argument list ARG.  */
 642 extern int vswscanf (__const wchar_t *__restrict __s,
 643                      __const wchar_t *__restrict __format,
 644                      __gnuc_va_list __arg)
 645      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 646
 647 # if !defined __USE_GNU \
 648      && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
 649      && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
 650 #  ifdef __REDIRECT
 651 extern int __REDIRECT (vfwscanf, (__FILE *__restrict __s,
 652                                   __const wchar_t *__restrict __format,
 653                                   __gnuc_va_list __arg), __isoc99_vfwscanf)
 654      /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 655 extern int __REDIRECT (vwscanf, (__const wchar_t *__restrict __format,
 656                                  __gnuc_va_list __arg), __isoc99_vwscanf)
 657      /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
 658 extern int __REDIRECT (vswscanf, (__const wchar_t *__restrict __s,
 659                                   __const wchar_t *__restrict __format,
 660                                   __gnuc_va_list __arg), __isoc99_vswscanf)
 661      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 662 #  else
 663 extern int __isoc99_vfwscanf (__FILE *__restrict __s,
 664                               __const wchar_t *__restrict __format,
 665                               __gnuc_va_list __arg);
 666 extern int __isoc99_vwscanf (__const wchar_t *__restrict __format,
 667                              __gnuc_va_list __arg);
 668 extern int __isoc99_vswscanf (__const wchar_t *__restrict __s,
 669                               __const wchar_t *__restrict __format,
 670                               __gnuc_va_list __arg) __THROW;
 671 #   define vfwscanf __isoc99_vfwscanf
 672 #   define vwscanf __isoc99_vwscanf
 673 #   define vswscanf __isoc99_vswscanf
 674 #  endif
 675 # endif
 676
 677 __END_NAMESPACE_C99
 678 #endif /* Use ISO C99. */
 679
 680
 681 __BEGIN_NAMESPACE_C99
 682 /* Read a character from STREAM.
 683
 684    These functions are possible cancellation points and therefore not
 685    marked with __THROW.  */
 686 extern wint_t fgetwc (__FILE *__stream);
 687 extern wint_t getwc (__FILE *__stream);
 688
 689 /* Read a character from stdin.
 690
 691    This function is a possible cancellation point and therefore not
 692    marked with __THROW.  */
 693 extern wint_t getwchar (void);
 694
 695
 696 /* Write a character to STREAM.
 697
 698    These functions are possible cancellation points and therefore not
 699    marked with __THROW.  */
 700 extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
 701 extern wint_t putwc (wchar_t __wc, __FILE *__stream);
 702
 703 /* Write a character to stdout.
 704
 705    This function is a possible cancellation points and therefore not
 706    marked with __THROW.  */
 707 extern wint_t putwchar (wchar_t __wc);
 708
 709
 710 /* Get a newline-terminated wide character string of finite length
 711    from STREAM.
 712
 713    This function is a possible cancellation points and therefore not
 714    marked with __THROW.  */
 715 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
 716                         __FILE *__restrict __stream);
 717
 718 /* Write a string to STREAM.
 719
 720    This function is a possible cancellation points and therefore not
 721    marked with __THROW.  */
 722 extern int fputws (__const wchar_t *__restrict __ws,
 723                    __FILE *__restrict __stream);
 724
 725
 726 /* Push a character back onto the input buffer of STREAM.
 727
 728    This function is a possible cancellation points and therefore not
 729    marked with __THROW.  */
 730 extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
 731 __END_NAMESPACE_C99
 732
 733
 734 #ifdef __USE_GNU
 735 /* These are defined to be equivalent to the `char' functions defined
 736    in POSIX.1:1996.
 737
 738    These functions are not part of POSIX and therefore no official
 739    cancellation point.  But due to similarity with an POSIX interface
 740    or due to the implementation they are cancellation points and
 741    therefore not marked with __THROW.  */
 742 extern wint_t getwc_unlocked (__FILE *__stream);
 743 extern wint_t getwchar_unlocked (void);
 744
 745 /* This is the wide character version of a GNU extension.
 746
 747    This function is not part of POSIX and therefore no official
 748    cancellation point.  But due to similarity with an POSIX interface
 749    or due to the implementation it is a cancellation point and
 750    therefore not marked with __THROW.  */
 751 extern wint_t fgetwc_unlocked (__FILE *__stream);
 752
 753 /* Faster version when locking is not necessary.
 754
 755    This function is not part of POSIX and therefore no official
 756    cancellation point.  But due to similarity with an POSIX interface
 757    or due to the implementation it is a cancellation point and
 758    therefore not marked with __THROW.  */
 759 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
 760
 761 /* These are defined to be equivalent to the `char' functions defined
 762    in POSIX.1:1996.
 763
 764    These functions are not part of POSIX and therefore no official
 765    cancellation point.  But due to similarity with an POSIX interface
 766    or due to the implementation they are cancellation points and
 767    therefore not marked with __THROW.  */
 768 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
 769 extern wint_t putwchar_unlocked (wchar_t __wc);
 770
 771
 772 /* This function does the same as `fgetws' but does not lock the stream.
 773
 774    This function is not part of POSIX and therefore no official
 775    cancellation point.  But due to similarity with an POSIX interface
 776    or due to the implementation it is a cancellation point and
 777    therefore not marked with __THROW.  */
 778 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
 779                                  __FILE *__restrict __stream);
 780
 781 /* This function does the same as `fputws' but does not lock the stream.
 782
 783    This function is not part of POSIX and therefore no official
 784    cancellation point.  But due to similarity with an POSIX interface
 785    or due to the implementation it is a cancellation point and
 786    therefore not marked with __THROW.  */
 787 extern int fputws_unlocked (__const wchar_t *__restrict __ws,
 788                             __FILE *__restrict __stream);
 789 #endif
 790
 791
 792 __BEGIN_NAMESPACE_C99
 793 /* Format TP into S according to FORMAT.
 794    Write no more than MAXSIZE wide characters and return the number
 795    of wide characters written, or 0 if it would exceed MAXSIZE.  */
 796 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
 797                         __const wchar_t *__restrict __format,
 798                         __const struct tm *__restrict __tp) __THROW;
 799 __END_NAMESPACE_C99
 800
 801 # ifdef __USE_GNU
 802 # include <xlocale.h>
 803
 804 /* Similar to `wcsftime' but takes the information from
 805    the provided locale and not the global locale.  */
 806 extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
 807                           __const wchar_t *__restrict __format,
 808                           __const struct tm *__restrict __tp,
 809                           __locale_t __loc) __THROW;
 810 # endif
 811
 812 /* The X/Open standard demands that most of the functions defined in
 813    the <wctype.h> header must also appear here.  This is probably
 814    because some X/Open members wrote their implementation before the
 815    ISO C standard was published and introduced the better solution.
 816    We have to provide these definitions for compliance reasons but we
 817    do this nonsense only if really necessary.  */
 818 #if defined __USE_UNIX98 && !defined __USE_GNU
 819 # define __need_iswxxx
 820 # include <wctype.h>
 821 #endif
 822
 823 /* Define some macros helping to catch buffer overflows.  */
 824 #if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline
 825 # include <bits/wchar2.h>
 826 #endif
 827
 828 #ifdef __LDBL_COMPAT
 829 # include <bits/wchar-ldbl.h>
 830 #endif
 831
 832 __END_DECLS
 833
 834 #endif  /* _WCHAR_H defined */
 835
 836 #endif /* wchar.h  */