wctype/wctype.h

   1 /* Copyright (C) 1996-2016 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, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 /*
  19  *      ISO C99 Standard: 7.25
  20  *      Wide character classification and mapping utilities  <wctype.h>
  21  */
  22
  23 #ifndef _WCTYPE_H
  24
  25 #include <features.h>
  26 #include <bits/types.h>
  27
  28 #ifndef __need_iswxxx
  29 # define _WCTYPE_H      1
  30
  31 /* Get wint_t from <wchar.h>.  */
  32 # define __need_wint_t
  33 # include <wchar.h>
  34
  35 /* Constant expression of type `wint_t' whose value does not correspond
  36    to any member of the extended character set.  */
  37 # ifndef WEOF
  38 #  define WEOF (0xffffffffu)
  39 # endif
  40 #endif
  41 #undef __need_iswxxx
  42
  43
  44 /* The following part is also used in the <wcsmbs.h> header when compiled
  45    in the Unix98 compatibility mode.  */
  46 #ifndef __iswxxx_defined
  47 # define __iswxxx_defined       1
  48
  49 __BEGIN_NAMESPACE_C99
  50 /* Scalar type that can hold values which represent locale-specific
  51    character classifications.  */
  52 typedef unsigned long int wctype_t;
  53 __END_NAMESPACE_C99
  54
  55 # ifndef _ISwbit
  56 /* The characteristics are stored always in network byte order (big
  57    endian).  We define the bit value interpretations here dependent on the
  58    machine's byte order.  */
  59
  60 #  include <endian.h>
  61 #  if __BYTE_ORDER == __BIG_ENDIAN
  62 #   define _ISwbit(bit) (1 << (bit))
  63 #  else /* __BYTE_ORDER == __LITTLE_ENDIAN */
  64 #   define _ISwbit(bit) \
  65         ((bit) < 8 ? (int) ((1UL << (bit)) << 24)                             \
  66          : ((bit) < 16 ? (int) ((1UL << (bit)) << 8)                          \
  67             : ((bit) < 24 ? (int) ((1UL << (bit)) >> 8)                       \
  68                : (int) ((1UL << (bit)) >> 24))))
  69 #  endif
  70
  71 enum
  72 {
  73   __ISwupper = 0,                       /* UPPERCASE.  */
  74   __ISwlower = 1,                       /* lowercase.  */
  75   __ISwalpha = 2,                       /* Alphabetic.  */
  76   __ISwdigit = 3,                       /* Numeric.  */
  77   __ISwxdigit = 4,                      /* Hexadecimal numeric.  */
  78   __ISwspace = 5,                       /* Whitespace.  */
  79   __ISwprint = 6,                       /* Printing.  */
  80   __ISwgraph = 7,                       /* Graphical.  */
  81   __ISwblank = 8,                       /* Blank (usually SPC and TAB).  */
  82   __ISwcntrl = 9,                       /* Control character.  */
  83   __ISwpunct = 10,                      /* Punctuation.  */
  84   __ISwalnum = 11,                      /* Alphanumeric.  */
  85
  86   _ISwupper = _ISwbit (__ISwupper),     /* UPPERCASE.  */
  87   _ISwlower = _ISwbit (__ISwlower),     /* lowercase.  */
  88   _ISwalpha = _ISwbit (__ISwalpha),     /* Alphabetic.  */
  89   _ISwdigit = _ISwbit (__ISwdigit),     /* Numeric.  */
  90   _ISwxdigit = _ISwbit (__ISwxdigit),   /* Hexadecimal numeric.  */
  91   _ISwspace = _ISwbit (__ISwspace),     /* Whitespace.  */
  92   _ISwprint = _ISwbit (__ISwprint),     /* Printing.  */
  93   _ISwgraph = _ISwbit (__ISwgraph),     /* Graphical.  */
  94   _ISwblank = _ISwbit (__ISwblank),     /* Blank (usually SPC and TAB).  */
  95   _ISwcntrl = _ISwbit (__ISwcntrl),     /* Control character.  */
  96   _ISwpunct = _ISwbit (__ISwpunct),     /* Punctuation.  */
  97   _ISwalnum = _ISwbit (__ISwalnum)      /* Alphanumeric.  */
  98 };
  99 # endif /* Not _ISwbit  */
 100
 101
 102 __BEGIN_DECLS
 103
 104 __BEGIN_NAMESPACE_C99
 105 /*
 106  * Wide-character classification functions: 7.15.2.1.
 107  */
 108
 109 /* Test for any wide character for which `iswalpha' or `iswdigit' is
 110    true.  */
 111 extern int iswalnum (wint_t __wc) __THROW;
 112
 113 /* Test for any wide character for which `iswupper' or 'iswlower' is
 114    true, or any wide character that is one of a locale-specific set of
 115    wide-characters for which none of `iswcntrl', `iswdigit',
 116    `iswpunct', or `iswspace' is true.  */
 117 extern int iswalpha (wint_t __wc) __THROW;
 118
 119 /* Test for any control wide character.  */
 120 extern int iswcntrl (wint_t __wc) __THROW;
 121
 122 /* Test for any wide character that corresponds to a decimal-digit
 123    character.  */
 124 extern int iswdigit (wint_t __wc) __THROW;
 125
 126 /* Test for any wide character for which `iswprint' is true and
 127    `iswspace' is false.  */
 128 extern int iswgraph (wint_t __wc) __THROW;
 129
 130 /* Test for any wide character that corresponds to a lowercase letter
 131    or is one of a locale-specific set of wide characters for which
 132    none of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true.  */
 133 extern int iswlower (wint_t __wc) __THROW;
 134
 135 /* Test for any printing wide character.  */
 136 extern int iswprint (wint_t __wc) __THROW;
 137
 138 /* Test for any printing wide character that is one of a
 139    locale-specific et of wide characters for which neither `iswspace'
 140    nor `iswalnum' is true.  */
 141 extern int iswpunct (wint_t __wc) __THROW;
 142
 143 /* Test for any wide character that corresponds to a locale-specific
 144    set of wide characters for which none of `iswalnum', `iswgraph', or
 145    `iswpunct' is true.  */
 146 extern int iswspace (wint_t __wc) __THROW;
 147
 148 /* Test for any wide character that corresponds to an uppercase letter
 149    or is one of a locale-specific set of wide character for which none
 150    of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true.  */
 151 extern int iswupper (wint_t __wc) __THROW;
 152
 153 /* Test for any wide character that corresponds to a hexadecimal-digit
 154    character equivalent to that performed be the functions described
 155    in the previous subclause.  */
 156 extern int iswxdigit (wint_t __wc) __THROW;
 157
 158 /* Test for any wide character that corresponds to a standard blank
 159    wide character or a locale-specific set of wide characters for
 160    which `iswalnum' is false.  */
 161 # ifdef __USE_ISOC99
 162 extern int iswblank (wint_t __wc) __THROW;
 163 # endif
 164
 165 /*
 166  * Extensible wide-character classification functions: 7.15.2.2.
 167  */
 168
 169 /* Construct value that describes a class of wide characters identified
 170    by the string argument PROPERTY.  */
 171 extern wctype_t wctype (const char *__property) __THROW;
 172
 173 /* Determine whether the wide-character WC has the property described by
 174    DESC.  */
 175 extern int iswctype (wint_t __wc, wctype_t __desc) __THROW;
 176 __END_NAMESPACE_C99
 177
 178
 179 /*
 180  * Wide-character case-mapping functions: 7.15.3.1.
 181  */
 182
 183 __BEGIN_NAMESPACE_C99
 184 /* Scalar type that can hold values which represent locale-specific
 185    character mappings.  */
 186 typedef const __int32_t *wctrans_t;
 187 __END_NAMESPACE_C99
 188 #ifdef __USE_GNU
 189 __USING_NAMESPACE_C99(wctrans_t)
 190 #endif
 191
 192 __BEGIN_NAMESPACE_C99
 193 /* Converts an uppercase letter to the corresponding lowercase letter.  */
 194 extern wint_t towlower (wint_t __wc) __THROW;
 195
 196 /* Converts an lowercase letter to the corresponding uppercase letter.  */
 197 extern wint_t towupper (wint_t __wc) __THROW;
 198 __END_NAMESPACE_C99
 199
 200 __END_DECLS
 201
 202 #endif  /* need iswxxx.  */
 203
 204
 205 /* The remaining definitions and declarations must not appear in the
 206    <wchar.h> header.  */
 207 #ifdef _WCTYPE_H
 208
 209 /*
 210  * Extensible wide-character mapping functions: 7.15.3.2.
 211  */
 212
 213 __BEGIN_DECLS
 214
 215 __BEGIN_NAMESPACE_C99
 216 /* Construct value that describes a mapping between wide characters
 217    identified by the string argument PROPERTY.  */
 218 extern wctrans_t wctrans (const char *__property) __THROW;
 219
 220 /* Map the wide character WC using the mapping described by DESC.  */
 221 extern wint_t towctrans (wint_t __wc, wctrans_t __desc) __THROW;
 222 __END_NAMESPACE_C99
 223
 224 # ifdef __USE_XOPEN2K8
 225 /* Declare the interface to extended locale model.  */
 226 #  include <xlocale.h>
 227
 228 /* Test for any wide character for which `iswalpha' or `iswdigit' is
 229    true.  */
 230 extern int iswalnum_l (wint_t __wc, __locale_t __locale) __THROW;
 231
 232 /* Test for any wide character for which `iswupper' or 'iswlower' is
 233    true, or any wide character that is one of a locale-specific set of
 234    wide-characters for which none of `iswcntrl', `iswdigit',
 235    `iswpunct', or `iswspace' is true.  */
 236 extern int iswalpha_l (wint_t __wc, __locale_t __locale) __THROW;
 237
 238 /* Test for any control wide character.  */
 239 extern int iswcntrl_l (wint_t __wc, __locale_t __locale) __THROW;
 240
 241 /* Test for any wide character that corresponds to a decimal-digit
 242    character.  */
 243 extern int iswdigit_l (wint_t __wc, __locale_t __locale) __THROW;
 244
 245 /* Test for any wide character for which `iswprint' is true and
 246    `iswspace' is false.  */
 247 extern int iswgraph_l (wint_t __wc, __locale_t __locale) __THROW;
 248
 249 /* Test for any wide character that corresponds to a lowercase letter
 250    or is one of a locale-specific set of wide characters for which
 251    none of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true.  */
 252 extern int iswlower_l (wint_t __wc, __locale_t __locale) __THROW;
 253
 254 /* Test for any printing wide character.  */
 255 extern int iswprint_l (wint_t __wc, __locale_t __locale) __THROW;
 256
 257 /* Test for any printing wide character that is one of a
 258    locale-specific et of wide characters for which neither `iswspace'
 259    nor `iswalnum' is true.  */
 260 extern int iswpunct_l (wint_t __wc, __locale_t __locale) __THROW;
 261
 262 /* Test for any wide character that corresponds to a locale-specific
 263    set of wide characters for which none of `iswalnum', `iswgraph', or
 264    `iswpunct' is true.  */
 265 extern int iswspace_l (wint_t __wc, __locale_t __locale) __THROW;
 266
 267 /* Test for any wide character that corresponds to an uppercase letter
 268    or is one of a locale-specific set of wide character for which none
 269    of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true.  */
 270 extern int iswupper_l (wint_t __wc, __locale_t __locale) __THROW;
 271
 272 /* Test for any wide character that corresponds to a hexadecimal-digit
 273    character equivalent to that performed be the functions described
 274    in the previous subclause.  */
 275 extern int iswxdigit_l (wint_t __wc, __locale_t __locale) __THROW;
 276
 277 /* Test for any wide character that corresponds to a standard blank
 278    wide character or a locale-specific set of wide characters for
 279    which `iswalnum' is false.  */
 280 extern int iswblank_l (wint_t __wc, __locale_t __locale) __THROW;
 281
 282 /* Construct value that describes a class of wide characters identified
 283    by the string argument PROPERTY.  */
 284 extern wctype_t wctype_l (const char *__property, __locale_t __locale)
 285      __THROW;
 286
 287 /* Determine whether the wide-character WC has the property described by
 288    DESC.  */
 289 extern int iswctype_l (wint_t __wc, wctype_t __desc, __locale_t __locale)
 290      __THROW;
 291
 292
 293 /*
 294  * Wide-character case-mapping functions.
 295  */
 296
 297 /* Converts an uppercase letter to the corresponding lowercase letter.  */
 298 extern wint_t towlower_l (wint_t __wc, __locale_t __locale) __THROW;
 299
 300 /* Converts an lowercase letter to the corresponding uppercase letter.  */
 301 extern wint_t towupper_l (wint_t __wc, __locale_t __locale) __THROW;
 302
 303 /* Construct value that describes a mapping between wide characters
 304    identified by the string argument PROPERTY.  */
 305 extern wctrans_t wctrans_l (const char *__property, __locale_t __locale)
 306      __THROW;
 307
 308 /* Map the wide character WC using the mapping described by DESC.  */
 309 extern wint_t towctrans_l (wint_t __wc, wctrans_t __desc,
 310                            __locale_t __locale) __THROW;
 311
 312 # endif /* Use POSIX 2008.  */
 313
 314 __END_DECLS
 315
 316 #endif  /* __WCTYPE_H defined.  */
 317
 318 #endif /* wctype.h  */