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 # if defined __USE_UNIX98 || defined __USE_XOPEN2K
35 # define __need_FILE
36 # endif
37 # include <stdio.h>
38 /* Get va_list definition. */
39 # define __need___va_list
40 # include <stdarg.h>
41
42 # include <bits/wchar.h>
43
44 /* Get size_t, wchar_t, wint_t and NULL from <stddef.h>. */
45 # define __need_size_t
46 # define __need_wchar_t
47 # define __need_NULL
48 #endif
49 #if defined _WCHAR_H || defined __need_wint_t || !defined __WINT_TYPE__
50 # undef __need_wint_t
51 # define __need_wint_t
52 # include <stddef.h>
53
54 /* We try to get wint_t from <stddef.h>, but not all GCC versions define it
55 there. So define it ourselves if it remains undefined. */
56 # ifndef _WINT_T
57 /* Integral type unchanged by default argument promotions that can
58 hold any value corresponding to members of the extended character
59 set, as well as at least one value that does not correspond to any
60 member of the extended character set. */
61 # define _WINT_T
62 typedef unsigned int wint_t;
63 # else
64 /* Work around problems with the <stddef.h> file which doesn't put
65 wint_t in the std namespace. */
66 # if defined __cplusplus && defined _GLIBCPP_USE_NAMESPACES \
67 && defined __WINT_TYPE__
68 __BEGIN_NAMESPACE_STD
69 typedef __WINT_TYPE__ wint_t;
70 __END_NAMESPACE_STD
71 # endif
72 # endif
73 #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
__NTH(btowc (int __c))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
__NTH(wctob (wint_t __wc))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
__NTH(mbrlen (__const char * __restrict __s,size_t __n,mbstate_t * __restrict __ps))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