Dr Andrew Scott
G7VAV
Senior Lecturer
School of Computing
and Communications
D35 InfoLab21
Lancaster University
Lancaster, LA1 4WA
United Kingdom
School of Computing
and Communications
D35 InfoLab21
Lancaster University
Lancaster, LA1 4WA
United Kingdom
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wchar.h
001: /* Copyright (C) 1995-2008, 2009, 2010, 2011 Free Software Foundation, Inc. 002: This file is part of the GNU C Library. 003: 004: The GNU C Library is free software; you can redistribute it and/or 005: modify it under the terms of the GNU Lesser General Public 006: License as published by the Free Software Foundation; either 007: version 2.1 of the License, or (at your option) any later version. 008: 009: The GNU C Library is distributed in the hope that it will be useful, 010: but WITHOUT ANY WARRANTY; without even the implied warranty of 011: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012: Lesser General Public License for more details. 013: 014: You should have received a copy of the GNU Lesser General Public 015: License along with the GNU C Library; if not, write to the Free 016: Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 017: 02111-1307 USA. */ 018: 019: /* 020: * ISO C99 Standard: 7.24 021: * Extended multibyte and wide character utilities <wchar.h> 022: */ 023: 024: #ifndef _WCHAR_H 025: 026: #if !defined __need_mbstate_t && !defined __need_wint_t 027: # define _WCHAR_H 1 028: # include <features.h> 029: #endif 030: 031: #ifdef _WCHAR_H 032: /* Get FILE definition. */ 033: # define __need___FILE 034: # if defined __USE_UNIX98 || defined __USE_XOPEN2K 035: # define __need_FILE 036: # endif 037: # include <stdio.h> 038: /* Get va_list definition. */ 039: # define __need___va_list 040: # include <stdarg.h> 041: 042: # include <bits/wchar.h> 043: 044: /* Get size_t, wchar_t, wint_t and NULL from <stddef.h>. */ 045: # define __need_size_t 046: # define __need_wchar_t 047: # define __need_NULL 048: #endif 049: #if defined _WCHAR_H || defined __need_wint_t || !defined __WINT_TYPE__ 050: # undef __need_wint_t 051: # define __need_wint_t 052: # include <stddef.h> 053: 054: /* We try to get wint_t from <stddef.h>, but not all GCC versions define it 055: there. So define it ourselves if it remains undefined. */ 056: # ifndef _WINT_T 057: /* Integral type unchanged by default argument promotions that can 058: hold any value corresponding to members of the extended character 059: set, as well as at least one value that does not correspond to any 060: member of the extended character set. */ 061: # define _WINT_T 062: typedef unsigned int wint_t; 063: # else 064: /* Work around problems with the <stddef.h> file which doesn't put 065: wint_t in the std namespace. */ 066: # if defined __cplusplus && defined _GLIBCPP_USE_NAMESPACES \ 067: && defined __WINT_TYPE__ 068: __BEGIN_NAMESPACE_STD 069: typedef __WINT_TYPE__ wint_t; 070: __END_NAMESPACE_STD 071: # endif 072: # endif 073: 074: /* Tell the caller that we provide correct C++ prototypes. */ 075: # if defined __cplusplus && __GNUC_PREREQ (4, 4) 076: # define __CORRECT_ISO_CPP_WCHAR_H_PROTO 077: # endif 078: #endif 079: 080: #if (defined _WCHAR_H || defined __need_mbstate_t) && !defined __mbstate_t_defined 081: # define __mbstate_t_defined 1 082: /* Conversion state information. */ 083: typedef struct 084: { 085: int __count; 086: union 087: { 088: # ifdef __WINT_TYPE__ 089: __WINT_TYPE__ __wch; 090: # else 091: wint_t __wch; 092: # endif 093: char __wchb[4]; 094: } __value; /* Value so far. */ 095: } __mbstate_t; 096: #endif 097: #undef __need_mbstate_t 098: 099: 100: /* The rest of the file is only used if used if __need_mbstate_t is not 101: defined. */ 102: #ifdef _WCHAR_H 103: 104: __BEGIN_NAMESPACE_C99 105: /* Public type. */ 106: typedef __mbstate_t mbstate_t; 107: __END_NAMESPACE_C99 108: #ifdef __USE_GNU 109: __USING_NAMESPACE_C99(mbstate_t) 110: #endif 111: 112: #ifndef WCHAR_MIN 113: /* These constants might also be defined in <inttypes.h>. */ 114: # define WCHAR_MIN __WCHAR_MIN 115: # define WCHAR_MAX __WCHAR_MAX 116: #endif 117: 118: #ifndef WEOF 119: # define WEOF (0xffffffffu) 120: #endif 121: 122: /* For XPG4 compliance we have to define the stuff from <wctype.h> here 123: as well. */ 124: #if defined __USE_XOPEN && !defined __USE_UNIX98 125: # include <wctype.h> 126: #endif 127: 128: 129: __BEGIN_DECLS 130: 131: __BEGIN_NAMESPACE_STD 132: /* This incomplete type is defined in <time.h> but needed here because 133: of `wcsftime'. */ 134: struct tm; 135: __END_NAMESPACE_STD 136: /* XXX We have to clean this up at some point. Since tm is in the std 137: namespace but wcsftime is in __c99 the type wouldn't be found 138: without inserting it in the global namespace. */ 139: __USING_NAMESPACE_STD(tm) 140: 141: 142: __BEGIN_NAMESPACE_STD 143: /* Copy SRC to DEST. */ 144: extern wchar_t *wcscpy (wchar_t *__restrict __dest, 145: __const wchar_t *__restrict __src) __THROW; 146: /* Copy no more than N wide-characters of SRC to DEST. */ 147: extern wchar_t *wcsncpy (wchar_t *__restrict __dest, 148: __const wchar_t *__restrict __src, size_t __n) 149: __THROW; 150: 151: /* Append SRC onto DEST. */ 152: extern wchar_t *wcscat (wchar_t *__restrict __dest, 153: __const wchar_t *__restrict __src) __THROW; 154: /* Append no more than N wide-characters of SRC onto DEST. */ 155: extern wchar_t *wcsncat (wchar_t *__restrict __dest, 156: __const wchar_t *__restrict __src, size_t __n) 157: __THROW; 158: 159: /* Compare S1 and S2. */ 160: extern int wcscmp (__const wchar_t *__s1, __const wchar_t *__s2) 161: __THROW __attribute_pure__; 162: /* Compare N wide-characters of S1 and S2. */ 163: extern int wcsncmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n) 164: __THROW __attribute_pure__; 165: __END_NAMESPACE_STD 166: 167: #ifdef __USE_XOPEN2K8 168: /* Compare S1 and S2, ignoring case. */ 169: extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW; 170: 171: /* Compare no more than N chars of S1 and S2, ignoring case. */ 172: extern int wcsncasecmp (__const wchar_t *__s1, __const wchar_t *__s2, 173: size_t __n) __THROW; 174: 175: /* Similar to the two functions above but take the information from 176: the provided locale and not the global locale. */ 177: # include <xlocale.h> 178: 179: extern int wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2, 180: __locale_t __loc) __THROW; 181: 182: extern int wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2, 183: size_t __n, __locale_t __loc) __THROW; 184: #endif 185: 186: __BEGIN_NAMESPACE_STD 187: /* Compare S1 and S2, both interpreted as appropriate to the 188: LC_COLLATE category of the current locale. */ 189: extern int wcscoll (__const wchar_t *__s1, __const wchar_t *__s2) __THROW; 190: /* Transform S2 into array pointed to by S1 such that if wcscmp is 191: applied to two transformed strings the result is the as applying 192: `wcscoll' to the original strings. */ 193: extern size_t wcsxfrm (wchar_t *__restrict __s1, 194: __const wchar_t *__restrict __s2, size_t __n) __THROW; 195: __END_NAMESPACE_STD 196: 197: #ifdef __USE_XOPEN2K8 198: /* Similar to the two functions above but take the information from 199: the provided locale and not the global locale. */ 200: 201: /* Compare S1 and S2, both interpreted as appropriate to the 202: LC_COLLATE category of the given locale. */ 203: extern int wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2, 204: __locale_t __loc) __THROW; 205: 206: /* Transform S2 into array pointed to by S1 such that if wcscmp is 207: applied to two transformed strings the result is the as applying 208: `wcscoll' to the original strings. */ 209: extern size_t wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2, 210: size_t __n, __locale_t __loc) __THROW; 211: 212: /* Duplicate S, returning an identical malloc'd string. */ 213: extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__; 214: #endif 215: 216: __BEGIN_NAMESPACE_STD 217: /* Find the first occurrence of WC in WCS. */ 218: #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 219: extern "C++" wchar_t *wcschr (wchar_t *__wcs, wchar_t __wc) 220: __THROW __asm ("wcschr") __attribute_pure__; 221: extern "C++" __const wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc) 222: __THROW __asm ("wcschr") __attribute_pure__; 223: #else 224: extern wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc) 225: __THROW __attribute_pure__; 226: #endif 227: /* Find the last occurrence of WC in WCS. */ 228: #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 229: extern "C++" wchar_t *wcsrchr (wchar_t *__wcs, wchar_t __wc) 230: __THROW __asm ("wcsrchr") __attribute_pure__; 231: extern "C++" __const wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc) 232: __THROW __asm ("wcsrchr") __attribute_pure__; 233: #else 234: extern wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc) 235: __THROW __attribute_pure__; 236: #endif 237: __END_NAMESPACE_STD 238: 239: #ifdef __USE_GNU 240: /* This function is similar to `wcschr'. But it returns a pointer to 241: the closing NUL wide character in case C is not found in S. */ 242: extern wchar_t *wcschrnul (__const wchar_t *__s, wchar_t __wc) 243: __THROW __attribute_pure__; 244: #endif 245: 246: __BEGIN_NAMESPACE_STD 247: /* Return the length of the initial segmet of WCS which 248: consists entirely of wide characters not in REJECT. */ 249: extern size_t wcscspn (__const wchar_t *__wcs, __const wchar_t *__reject) 250: __THROW __attribute_pure__; 251: /* Return the length of the initial segmet of WCS which 252: consists entirely of wide characters in ACCEPT. */ 253: extern size_t wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept) 254: __THROW __attribute_pure__; 255: /* Find the first occurrence in WCS of any character in ACCEPT. */ 256: #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 257: extern "C++" wchar_t *wcspbrk (wchar_t *__wcs, __const wchar_t *__accept) 258: __THROW __asm ("wcspbrk") __attribute_pure__; 259: extern "C++" __const wchar_t *wcspbrk (__const wchar_t *__wcs, 260: __const wchar_t *__accept) 261: __THROW __asm ("wcspbrk") __attribute_pure__; 262: #else 263: extern wchar_t *wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept) 264: __THROW __attribute_pure__; 265: #endif 266: /* Find the first occurrence of NEEDLE in HAYSTACK. */ 267: #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 268: extern "C++" wchar_t *wcsstr (wchar_t *__haystack, __const wchar_t *__needle) 269: __THROW __asm ("wcsstr") __attribute_pure__; 270: extern "C++" __const wchar_t *wcsstr (__const wchar_t *__haystack, 271: __const wchar_t *__needle) 272: __THROW __asm ("wcsstr") __attribute_pure__; 273: #else 274: extern wchar_t *wcsstr (__const wchar_t *__haystack, __const wchar_t *__needle) 275: __THROW __attribute_pure__; 276: #endif 277: 278: /* Divide WCS into tokens separated by characters in DELIM. */ 279: extern wchar_t *wcstok (wchar_t *__restrict __s, 280: __const wchar_t *__restrict __delim, 281: wchar_t **__restrict __ptr) __THROW; 282: 283: /* Return the number of wide characters in S. */ 284: extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__; 285: __END_NAMESPACE_STD 286: 287: #ifdef __USE_XOPEN 288: /* Another name for `wcsstr' from XPG4. */ 289: # ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 290: extern "C++" wchar_t *wcswcs (wchar_t *__haystack, __const wchar_t *__needle) 291: __THROW __asm ("wcswcs") __attribute_pure__; 292: extern "C++" __const wchar_t *wcswcs (__const wchar_t *__haystack, 293: __const wchar_t *__needle) 294: __THROW __asm ("wcswcs") __attribute_pure__; 295: # else 296: extern wchar_t *wcswcs (__const wchar_t *__haystack, __const wchar_t *__needle) 297: __THROW __attribute_pure__; 298: # endif 299: #endif 300: 301: #ifdef __USE_XOPEN2K8 302: /* Return the number of wide characters in S, but at most MAXLEN. */ 303: extern size_t wcsnlen (__const wchar_t *__s, size_t __maxlen) 304: __THROW __attribute_pure__; 305: #endif 306: 307: 308: __BEGIN_NAMESPACE_STD 309: /* Search N wide characters of S for C. */ 310: #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO 311: extern "C++" wchar_t *wmemchr (wchar_t *__s, wchar_t __c, size_t __n) 312: __THROW __asm ("wmemchr") __attribute_pure__; 313: extern "C++" __const wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, 314: size_t __n) 315: __THROW __asm ("wmemchr") __attribute_pure__; 316: #else 317: extern wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, size_t __n) 318: __THROW __attribute_pure__; 319: #endif 320: 321: /* Compare N wide characters of S1 and S2. */ 322: extern int wmemcmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n) 323: __THROW __attribute_pure__; 324: 325: /* Copy N wide characters of SRC to DEST. */ 326: extern wchar_t *wmemcpy (wchar_t *__restrict __s1, 327: __const wchar_t *__restrict __s2, size_t __n) __THROW; 328: 329: /* Copy N wide characters of SRC to DEST, guaranteeing 330: correct behavior for overlapping strings. */ 331: extern wchar_t *wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n) 332: __THROW; 333: 334: /* Set N wide characters of S to C. */ 335: extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW; 336: __END_NAMESPACE_STD 337: 338: #ifdef __USE_GNU 339: /* Copy N wide characters of SRC to DEST and return pointer to following 340: wide character. */ 341: extern wchar_t *wmempcpy (wchar_t *__restrict __s1, 342: __const wchar_t *__restrict __s2, size_t __n) 343: __THROW; 344: #endif 345: 346: 347: __BEGIN_NAMESPACE_STD 348: /* Determine whether C constitutes a valid (one-byte) multibyte 349: character. */ 350: extern wint_t btowc (int __c) __THROW; 351: 352: /* Determine whether C corresponds to a member of the extended 353: character set whose multibyte representation is a single byte. */ 354: extern int wctob (wint_t __c) __THROW; 355: 356: /* Determine whether PS points to an object representing the initial 357: state. */ 358: extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__; 359: 360: /* Write wide character representation of multibyte character pointed 361: to by S to PWC. */ 362: extern size_t mbrtowc (wchar_t *__restrict __pwc, 363: __const char *__restrict __s, size_t __n, 364: mbstate_t *__p) __THROW; 365: 366: /* Write multibyte representation of wide character WC to S. */ 367: extern size_t wcrtomb (char *__restrict __s, wchar_t __wc, 368: mbstate_t *__restrict __ps) __THROW; 369: 370: /* Return number of bytes in multibyte character pointed to by S. */ 371: extern size_t __mbrlen (__const char *__restrict __s, size_t __n, 372: mbstate_t *__restrict __ps) __THROW; 373: extern size_t mbrlen (__const char *__restrict __s, size_t __n, 374: mbstate_t *__restrict __ps) __THROW; 375: __END_NAMESPACE_STD 376: 377: #ifdef __USE_EXTERN_INLINES 378: /* Define inline function as optimization. */ 379: 380: /* We can use the BTOWC and WCTOB optimizations since we know that all 381: locales must use ASCII encoding for the values in the ASCII range 382: and because the wchar_t encoding is always ISO 10646. */ 383: extern wint_t __btowc_alias (int __c) __asm ("btowc"); 384: __extern_inline wint_t 385: __NTH (btowc (int __c)) 386: { return (__builtin_constant_p (__c) && __c >= '\0' && __c <= '\x7f' 387: ? (wint_t) __c : __btowc_alias (__c)); } 388: 389: extern int __wctob_alias (wint_t __c) __asm ("wctob"); 390: __extern_inline int 391: __NTH (wctob (wint_t __wc)) 392: { return (__builtin_constant_p (__wc) && __wc >= L'\0' && __wc <= L'\x7f' 393: ? (int) __wc : __wctob_alias (__wc)); } 394: 395: __extern_inline size_t 396: __NTH (mbrlen (__const char *__restrict __s, size_t __n, 397: mbstate_t *__restrict __ps)) 398: { return (__ps != NULL 399: ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); } 400: #endif 401: 402: __BEGIN_NAMESPACE_STD 403: /* Write wide character representation of multibyte character string 404: SRC to DST. */ 405: extern size_t mbsrtowcs (wchar_t *__restrict __dst, 406: __const char **__restrict __src, size_t __len, 407: mbstate_t *__restrict __ps) __THROW; 408: 409: /* Write multibyte character representation of wide character string 410: SRC to DST. */ 411: extern size_t wcsrtombs (char *__restrict __dst, 412: __const wchar_t **__restrict __src, size_t __len, 413: mbstate_t *__restrict __ps) __THROW; 414: __END_NAMESPACE_STD 415: 416: 417: #ifdef __USE_XOPEN2K8 418: /* Write wide character representation of at most NMC bytes of the 419: multibyte character string SRC to DST. */ 420: extern size_t mbsnrtowcs (wchar_t *__restrict __dst, 421: __const char **__restrict __src, size_t __nmc, 422: size_t __len, mbstate_t *__restrict __ps) __THROW; 423: 424: /* Write multibyte character representation of at most NWC characters 425: from the wide character string SRC to DST. */ 426: extern size_t wcsnrtombs (char *__restrict __dst, 427: __const wchar_t **__restrict __src, 428: size_t __nwc, size_t __len, 429: mbstate_t *__restrict __ps) __THROW; 430: #endif /* use POSIX 2008 */ 431: 432: 433: /* The following functions are extensions found in X/Open CAE. */ 434: #ifdef __USE_XOPEN 435: /* Determine number of column positions required for C. */ 436: extern int wcwidth (wchar_t __c) __THROW; 437: 438: /* Determine number of column positions required for first N wide 439: characters (or fewer if S ends before this) in S. */ 440: extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW; 441: #endif /* Use X/Open. */ 442: 443: 444: __BEGIN_NAMESPACE_STD 445: /* Convert initial portion of the wide string NPTR to `double' 446: representation. */ 447: extern double wcstod (__const wchar_t *__restrict __nptr, 448: wchar_t **__restrict __endptr) __THROW; 449: __END_NAMESPACE_STD 450: 451: #ifdef __USE_ISOC99 452: __BEGIN_NAMESPACE_C99 453: /* Likewise for `float' and `long double' sizes of floating-point numbers. */ 454: extern float wcstof (__const wchar_t *__restrict __nptr, 455: wchar_t **__restrict __endptr) __THROW; 456: extern long double wcstold (__const wchar_t *__restrict __nptr, 457: wchar_t **__restrict __endptr) __THROW; 458: __END_NAMESPACE_C99 459: #endif /* C99 */ 460: 461: 462: __BEGIN_NAMESPACE_STD 463: /* Convert initial portion of wide string NPTR to `long int' 464: representation. */ 465: extern long int wcstol (__const wchar_t *__restrict __nptr, 466: wchar_t **__restrict __endptr, int __base) __THROW; 467: 468: /* Convert initial portion of wide string NPTR to `unsigned long int' 469: representation. */ 470: extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr, 471: wchar_t **__restrict __endptr, int __base) 472: __THROW; 473: __END_NAMESPACE_STD 474: 475: #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU) 476: __BEGIN_NAMESPACE_C99 477: /* Convert initial portion of wide string NPTR to `long long int' 478: representation. */ 479: __extension__ 480: extern long long int wcstoll (__const wchar_t *__restrict __nptr, 481: wchar_t **__restrict __endptr, int __base) 482: __THROW; 483: 484: /* Convert initial portion of wide string NPTR to `unsigned long long int' 485: representation. */ 486: __extension__ 487: extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr, 488: wchar_t **__restrict __endptr, 489: int __base) __THROW; 490: __END_NAMESPACE_C99 491: #endif /* ISO C99 or GCC and GNU. */ 492: 493: #if defined __GNUC__ && defined __USE_GNU 494: /* Convert initial portion of wide string NPTR to `long long int' 495: representation. */ 496: __extension__ 497: extern long long int wcstoq (__const wchar_t *__restrict __nptr, 498: wchar_t **__restrict __endptr, int __base) 499: __THROW; 500: 501: /* Convert initial portion of wide string NPTR to `unsigned long long int' 502: representation. */ 503: __extension__ 504: extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr, 505: wchar_t **__restrict __endptr, 506: int __base) __THROW; 507: #endif /* GCC and use GNU. */ 508: 509: #ifdef __USE_GNU 510: /* The concept of one static locale per category is not very well 511: thought out. Many applications will need to process its data using 512: information from several different locales. Another application is 513: the implementation of the internationalization handling in the 514: upcoming ISO C++ standard library. To support this another set of 515: the functions using locale data exist which have an additional 516: argument. 517: 518: Attention: all these functions are *not* standardized in any form. 519: This is a proof-of-concept implementation. */ 520: 521: /* Structure for reentrant locale using functions. This is an 522: (almost) opaque type for the user level programs. */ 523: # include <xlocale.h> 524: 525: /* Special versions of the functions above which take the locale to 526: use as an additional parameter. */ 527: extern long int wcstol_l (__const wchar_t *__restrict __nptr, 528: wchar_t **__restrict __endptr, int __base, 529: __locale_t __loc) __THROW; 530: 531: extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr, 532: wchar_t **__restrict __endptr, 533: int __base, __locale_t __loc) __THROW; 534: 535: __extension__ 536: extern long long int wcstoll_l (__const wchar_t *__restrict __nptr, 537: wchar_t **__restrict __endptr, 538: int __base, __locale_t __loc) __THROW; 539: 540: __extension__ 541: extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr, 542: wchar_t **__restrict __endptr, 543: int __base, __locale_t __loc) 544: __THROW; 545: 546: extern double wcstod_l (__const wchar_t *__restrict __nptr, 547: wchar_t **__restrict __endptr, __locale_t __loc) 548: __THROW; 549: 550: extern float wcstof_l (__const wchar_t *__restrict __nptr, 551: wchar_t **__restrict __endptr, __locale_t __loc) 552: __THROW; 553: 554: extern long double wcstold_l (__const wchar_t *__restrict __nptr, 555: wchar_t **__restrict __endptr, 556: __locale_t __loc) __THROW; 557: #endif /* use GNU */ 558: 559: 560: #ifdef __USE_XOPEN2K8 561: /* Copy SRC to DEST, returning the address of the terminating L'\0' in 562: DEST. */ 563: extern wchar_t *wcpcpy (wchar_t *__restrict __dest, 564: __const wchar_t *__restrict __src) __THROW; 565: 566: /* Copy no more than N characters of SRC to DEST, returning the address of 567: the last character written into DEST. */ 568: extern wchar_t *wcpncpy (wchar_t *__restrict __dest, 569: __const wchar_t *__restrict __src, size_t __n) 570: __THROW; 571: 572: 573: /* Wide character I/O functions. */ 574: 575: /* Like OPEN_MEMSTREAM, but the stream is wide oriented and produces 576: a wide character string. */ 577: extern __FILE *open_wmemstream (wchar_t **__bufloc, size_t *__sizeloc) __THROW; 578: #endif 579: 580: #if defined __USE_ISOC95 || defined __USE_UNIX98 581: __BEGIN_NAMESPACE_STD 582: 583: /* Select orientation for stream. */ 584: extern int fwide (__FILE *__fp, int __mode) __THROW; 585: 586: 587: /* Write formatted output to STREAM. 588: 589: This function is a possible cancellation point and therefore not 590: marked with __THROW. */ 591: extern int fwprintf (__FILE *__restrict __stream, 592: __const wchar_t *__restrict __format, ...) 593: /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */; 594: /* Write formatted output to stdout. 595: 596: This function is a possible cancellation point and therefore not 597: marked with __THROW. */ 598: extern int wprintf (__const wchar_t *__restrict __format, ...) 599: /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */; 600: /* Write formatted output of at most N characters to S. */ 601: extern int swprintf (wchar_t *__restrict __s, size_t __n, 602: __const wchar_t *__restrict __format, ...) 603: __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */; 604: 605: /* Write formatted output to S from argument list ARG. 606: 607: This function is a possible cancellation point and therefore not 608: marked with __THROW. */ 609: extern int vfwprintf (__FILE *__restrict __s, 610: __const wchar_t *__restrict __format, 611: __gnuc_va_list __arg) 612: /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */; 613: /* Write formatted output to stdout from argument list ARG. 614: 615: This function is a possible cancellation point and therefore not 616: marked with __THROW. */ 617: extern int vwprintf (__const wchar_t *__restrict __format, 618: __gnuc_va_list __arg) 619: /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */; 620: /* Write formatted output of at most N character to S from argument 621: list ARG. */ 622: extern int vswprintf (wchar_t *__restrict __s, size_t __n, 623: __const wchar_t *__restrict __format, 624: __gnuc_va_list __arg) 625: __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */; 626: 627: 628: /* Read formatted input from STREAM. 629: 630: This function is a possible cancellation point and therefore not 631: marked with __THROW. */ 632: extern int fwscanf (__FILE *__restrict __stream, 633: __const wchar_t *__restrict __format, ...) 634: /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 635: /* Read formatted input from stdin. 636: 637: This function is a possible cancellation point and therefore not 638: marked with __THROW. */ 639: extern int wscanf (__const wchar_t *__restrict __format, ...) 640: /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */; 641: /* Read formatted input from S. */ 642: extern int swscanf (__const wchar_t *__restrict __s, 643: __const wchar_t *__restrict __format, ...) 644: __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 645: 646: # if defined __USE_ISOC99 && !defined __USE_GNU \ 647: && (!defined __LDBL_COMPAT || !defined __REDIRECT) \ 648: && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K) 649: # ifdef __REDIRECT 650: /* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[ 651: GNU extension which conflicts with valid %a followed by letter 652: s, S or [. */ 653: extern int __REDIRECT (fwscanf, (__FILE *__restrict __stream, 654: __const wchar_t *__restrict __format, ...), 655: __isoc99_fwscanf) 656: /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 657: extern int __REDIRECT (wscanf, (__const wchar_t *__restrict __format, ...), 658: __isoc99_wscanf) 659: /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */; 660: extern int __REDIRECT_NTH (swscanf, (__const wchar_t *__restrict __s, 661: __const wchar_t *__restrict __format, 662: ...), __isoc99_swscanf) 663: /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */; 664: # else 665: extern int __isoc99_fwscanf (__FILE *__restrict __stream, 666: __const wchar_t *__restrict __format, ...); 667: extern int __isoc99_wscanf (__const wchar_t *__restrict __format, ...); 668: extern int __isoc99_swscanf (__const wchar_t *__restrict __s, 669: __const wchar_t *__restrict __format, ...) 670: __THROW; 671: # define fwscanf __isoc99_fwscanf 672: # define wscanf __isoc99_wscanf 673: # define swscanf __isoc99_swscanf 674: # endif 675: # endif 676: 677: __END_NAMESPACE_STD 678: #endif /* Use ISO C95, C99 and Unix98. */ 679: 680: #ifdef __USE_ISOC99 681: __BEGIN_NAMESPACE_C99 682: /* Read formatted input from S into argument list ARG. 683: 684: This function is a possible cancellation point and therefore not 685: marked with __THROW. */ 686: extern int vfwscanf (__FILE *__restrict __s, 687: __const wchar_t *__restrict __format, 688: __gnuc_va_list __arg) 689: /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 690: /* Read formatted input from stdin into argument list ARG. 691: 692: This function is a possible cancellation point and therefore not 693: marked with __THROW. */ 694: extern int vwscanf (__const wchar_t *__restrict __format, 695: __gnuc_va_list __arg) 696: /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */; 697: /* Read formatted input from S into argument list ARG. */ 698: extern int vswscanf (__const wchar_t *__restrict __s, 699: __const wchar_t *__restrict __format, 700: __gnuc_va_list __arg) 701: __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 702: 703: # if !defined __USE_GNU \ 704: && (!defined __LDBL_COMPAT || !defined __REDIRECT) \ 705: && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K) 706: # ifdef __REDIRECT 707: extern int __REDIRECT (vfwscanf, (__FILE *__restrict __s, 708: __const wchar_t *__restrict __format, 709: __gnuc_va_list __arg), __isoc99_vfwscanf) 710: /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 711: extern int __REDIRECT (vwscanf, (__const wchar_t *__restrict __format, 712: __gnuc_va_list __arg), __isoc99_vwscanf) 713: /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */; 714: extern int __REDIRECT_NTH (vswscanf, (__const wchar_t *__restrict __s, 715: __const wchar_t *__restrict __format, 716: __gnuc_va_list __arg), __isoc99_vswscanf) 717: /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */; 718: # else 719: extern int __isoc99_vfwscanf (__FILE *__restrict __s, 720: __const wchar_t *__restrict __format, 721: __gnuc_va_list __arg); 722: extern int __isoc99_vwscanf (__const wchar_t *__restrict __format, 723: __gnuc_va_list __arg); 724: extern int __isoc99_vswscanf (__const wchar_t *__restrict __s, 725: __const wchar_t *__restrict __format, 726: __gnuc_va_list __arg) __THROW; 727: # define vfwscanf __isoc99_vfwscanf 728: # define vwscanf __isoc99_vwscanf 729: # define vswscanf __isoc99_vswscanf 730: # endif 731: # endif 732: 733: __END_NAMESPACE_C99 734: #endif /* Use ISO C99. */ 735: 736: 737: __BEGIN_NAMESPACE_STD 738: /* Read a character from STREAM. 739: 740: These functions are possible cancellation points and therefore not 741: marked with __THROW. */ 742: extern wint_t fgetwc (__FILE *__stream); 743: extern wint_t getwc (__FILE *__stream); 744: 745: /* Read a character from stdin. 746: 747: This function is a possible cancellation point and therefore not 748: marked with __THROW. */ 749: extern wint_t getwchar (void); 750: 751: 752: /* Write a character to STREAM. 753: 754: These functions are possible cancellation points and therefore not 755: marked with __THROW. */ 756: extern wint_t fputwc (wchar_t __wc, __FILE *__stream); 757: extern wint_t putwc (wchar_t __wc, __FILE *__stream); 758: 759: /* Write a character to stdout. 760: 761: This function is a possible cancellation point and therefore not 762: marked with __THROW. */ 763: extern wint_t putwchar (wchar_t __wc); 764: 765: 766: /* Get a newline-terminated wide character string of finite length 767: from STREAM. 768: 769: This function is a possible cancellation point and therefore not 770: marked with __THROW. */ 771: extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n, 772: __FILE *__restrict __stream); 773: 774: /* Write a string to STREAM. 775: 776: This function is a possible cancellation point and therefore not 777: marked with __THROW. */ 778: extern int fputws (__const wchar_t *__restrict __ws, 779: __FILE *__restrict __stream); 780: 781: 782: /* Push a character back onto the input buffer of STREAM. 783: 784: This function is a possible cancellation point and therefore not 785: marked with __THROW. */ 786: extern wint_t ungetwc (wint_t __wc, __FILE *__stream); 787: __END_NAMESPACE_STD 788: 789: 790: #ifdef __USE_GNU 791: /* These are defined to be equivalent to the `char' functions defined 792: in POSIX.1:1996. 793: 794: These functions are not part of POSIX and therefore no official 795: cancellation point. But due to similarity with an POSIX interface 796: or due to the implementation they are cancellation points and 797: therefore not marked with __THROW. */ 798: extern wint_t getwc_unlocked (__FILE *__stream); 799: extern wint_t getwchar_unlocked (void); 800: 801: /* This is the wide character version of a GNU extension. 802: 803: This function is not part of POSIX and therefore no official 804: cancellation point. But due to similarity with an POSIX interface 805: or due to the implementation it is a cancellation point and 806: therefore not marked with __THROW. */ 807: extern wint_t fgetwc_unlocked (__FILE *__stream); 808: 809: /* Faster version when locking is not necessary. 810: 811: This function is not part of POSIX and therefore no official 812: cancellation point. But due to similarity with an POSIX interface 813: or due to the implementation it is a cancellation point and 814: therefore not marked with __THROW. */ 815: extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream); 816: 817: /* These are defined to be equivalent to the `char' functions defined 818: in POSIX.1:1996. 819: 820: These functions are not part of POSIX and therefore no official 821: cancellation point. But due to similarity with an POSIX interface 822: or due to the implementation they are cancellation points and 823: therefore not marked with __THROW. */ 824: extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream); 825: extern wint_t putwchar_unlocked (wchar_t __wc); 826: 827: 828: /* This function does the same as `fgetws' but does not lock the stream. 829: 830: This function is not part of POSIX and therefore no official 831: cancellation point. But due to similarity with an POSIX interface 832: or due to the implementation it is a cancellation point and 833: therefore not marked with __THROW. */ 834: extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n, 835: __FILE *__restrict __stream); 836: 837: /* This function does the same as `fputws' but does not lock the stream. 838: 839: This function is not part of POSIX and therefore no official 840: cancellation point. But due to similarity with an POSIX interface 841: or due to the implementation it is a cancellation point and 842: therefore not marked with __THROW. */ 843: extern int fputws_unlocked (__const wchar_t *__restrict __ws, 844: __FILE *__restrict __stream); 845: #endif 846: 847: 848: __BEGIN_NAMESPACE_C99 849: /* Format TP into S according to FORMAT. 850: Write no more than MAXSIZE wide characters and return the number 851: of wide characters written, or 0 if it would exceed MAXSIZE. */ 852: extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize, 853: __const wchar_t *__restrict __format, 854: __const struct tm *__restrict __tp) __THROW; 855: __END_NAMESPACE_C99 856: 857: # ifdef __USE_GNU 858: # include <xlocale.h> 859: 860: /* Similar to `wcsftime' but takes the information from 861: the provided locale and not the global locale. */ 862: extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize, 863: __const wchar_t *__restrict __format, 864: __const struct tm *__restrict __tp, 865: __locale_t __loc) __THROW; 866: # endif 867: 868: /* The X/Open standard demands that most of the functions defined in 869: the <wctype.h> header must also appear here. This is probably 870: because some X/Open members wrote their implementation before the 871: ISO C standard was published and introduced the better solution. 872: We have to provide these definitions for compliance reasons but we 873: do this nonsense only if really necessary. */ 874: #if defined __USE_UNIX98 && !defined __USE_GNU 875: # define __need_iswxxx 876: # include <wctype.h> 877: #endif 878: 879: /* Define some macros helping to catch buffer overflows. */ 880: #if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline 881: # include <bits/wchar2.h> 882: #endif 883: 884: #ifdef __LDBL_COMPAT 885: # include <bits/wchar-ldbl.h> 886: #endif 887: 888: __END_DECLS 889: 890: #endif /* _WCHAR_H defined */ 891: 892: #endif /* wchar.h */ 893: 894: /* Undefine all __need_* constants in case we are included to get those 895: constants but the whole file was already read. */ 896: #undef __need_mbstate_t 897: #undef __need_wint_t 898:
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