1 /* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
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 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
20 * ISO C Standard, Amendment 1, 7.15:
21 * Wide-character classification and mapping utilities <wctype.h>
28 #include <bits/types.h>
32 /* We try to get wint_t from <stddef.h>, but not all GCC versions define it
33 there. So define it ourselves if it remains undefined. */
37 /* Integral type unchanged by default argument promotions that can
38 hold any value corresponding to members of the extended character
39 set, as well as at least one value that does not correspond to any
40 member of the extended character set. */
42 typedef unsigned int wint_t;
45 /* Scalar type that can hold values which represent locale-specific
46 character mappings. */
47 typedef __const unsigned int *wctrans_t;
49 /* Scalar type that can hold values which represent locale-specific
50 character classifications. */
51 typedef unsigned long int wctype_t;
53 /* Constant expression of type `wint_t' whose value does not correspond
54 to any member of the extended character set. */
56 # define WEOF (0xffffffffu)
60 /* The characteristics are stored always in network byte order (big
61 endian). We define the bit value interpretations here dependent on the
62 machine's byte order. */
65 # if __BYTE_ORDER == __BIG_ENDIAN
66 # define _ISbit(bit) (1 << bit)
67 # else /* __BYTE_ORDER == __LITTLE_ENDIAN */
68 # define _ISbit(bit) (bit < 8 ? ((1 << bit) << 8) : ((1 << bit) >> 8))
73 _ISupper = _ISbit (0), /* UPPERCASE. */
74 _ISlower = _ISbit (1), /* lowercase. */
75 _ISalpha = _ISbit (2), /* Alphabetic. */
76 _ISdigit = _ISbit (3), /* Numeric. */
77 _ISxdigit = _ISbit (4), /* Hexadecimal numeric. */
78 _ISspace = _ISbit (5), /* Whitespace. */
79 _ISprint = _ISbit (6), /* Printing. */
80 _ISgraph = _ISbit (7), /* Graphical. */
81 _ISblank = _ISbit (8), /* Blank (usually SPC and TAB). */
82 _IScntrl = _ISbit (9), /* Control character. */
83 _ISpunct = _ISbit (10), /* Punctuation. */
84 _ISalnum = _ISbit (11) /* Alphanumeric. */
86 #endif /* Not _ISbit */
90 * Wide-character classification functions: 7.15.2.1.
93 /* Test for any wide character for which `iswalpha' or `iswdigit' is
95 extern int iswalnum __P ((wint_t __wc));
97 /* Test for any wide character for which `iswupper' or 'iswlower' is
98 true, or any wide character that is one of a locale-specific set of
99 wide-characters for which none of `iswcntrl', `iswdigit',
100 `iswpunct', or `iswspace' is true. */
101 extern int iswalpha __P ((wint_t __wc));
103 /* Test for any control wide character. */
104 extern int iswcntrl __P ((wint_t __wc));
106 /* Test for any wide character that corresponds to a decimal-digit
108 extern int iswdigit __P ((wint_t __wc));
110 /* Test for any wide character for which `iswprint' is true and
111 `iswspace' is false. */
112 extern int iswgraph __P ((wint_t __wc));
114 /* Test for any wide character that corresponds to a lowercase letter
115 or is one of a locale-specific set of wide characters for which
116 none of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true. */
117 extern int iswlower __P ((wint_t __wc));
119 /* Test for any printing wide character. */
120 extern int iswprint __P ((wint_t __wc));
122 /* Test for any printing wide character that is one of a
123 locale-specific et of wide characters for which neither `iswspace'
124 nor `iswalnum' is true. */
125 extern int iswpunct __P ((wint_t __wc));
127 /* Test for any wide character that corresponds to a locale-specific
128 set of wide characters for which none of `iswalnum', `iswgraph', or
129 `iswpunct' is true. */
130 extern int iswspace __P ((wint_t __wc));
132 /* Test for any wide character that corresponds to an uppercase letter
133 or is one of a locale-specific set of wide character for which none
134 of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true. */
135 extern int iswupper __P ((wint_t __wc));
137 /* Test for any wide character that corresponds to a hexadecimal-digit
138 character equivalent to that performed be the functions described
139 in the previous subclause. */
140 extern int iswxdigit __P ((wint_t __wc));
143 * Extensible wide-character classification functions: 7.15.2.2.
146 /* Construct value that describes a class of wide characters identified
147 by the string argument PROPERTY. */
148 extern wctype_t wctype __P ((__const char *__property));
150 /* Determine whether the wide-character WC has the property described by
152 extern int __iswctype __P ((wint_t __wc, wctype_t __desc));
153 extern int iswctype __P ((wint_t __wc, wctype_t __desc));
157 * Wide-character case-mapping functions: 7.15.3.1.
160 /* Converts an uppercase letter to the corresponding lowercase letter. */
161 extern wint_t towlower __P ((wint_t __wc));
163 /* Converts an lowercase letter to the corresponding uppercase letter. */
164 extern wint_t towupper __P ((wint_t __wc));
167 * Extensible wide-character mapping functions: 7.15.3.2.
170 /* Construct value that describes a mapping between wide characters
171 identified by the string argument PROPERTY. */
172 extern wctrans_t wctrans __P ((__const char *__property));
174 /* Map the wide character WC using the mapping described by DESC. */
175 extern wint_t towctrans __P ((wint_t __wc, wctrans_t __desc));
180 # define iswalnum(wc) __iswctype ((wc), _ISalnum)
181 # define iswalpha(wc) __iswctype ((wc), _ISalpha)
182 # define iswcntrl(wc) __iswctype ((wc), _IScntrl)
183 # define iswdigit(wc) __iswctype ((wc), _ISdigit)
184 # define iswlower(wc) __iswctype ((wc), _ISlower)
185 # define iswgraph(wc) __iswctype ((wc), _ISgraph)
186 # define iswprint(wc) __iswctype ((wc), _ISprint)
187 # define iswpunct(wc) __iswctype ((wc), _ISpunct)
188 # define iswspace(wc) __iswctype ((wc), _ISspace)
189 # define iswupper(wc) __iswctype ((wc), _ISupper)
190 # define iswxdigit(wc) __iswctype ((wc), _ISxdigit)
193 # define iswblank(wc) __iswctype ((wc), _ISblank)
196 /* Pointer to conversion tables. */
197 extern __const __int32_t *__ctype_tolower; /* Case conversions. */
198 extern __const __int32_t *__ctype_toupper; /* Case conversions. */
200 # define towlower(wc) towctrans ((wc), __ctype_tolower)
201 # define towupper(wc) towctrans ((wc), __ctype_toupper)
203 #endif /* Not __NO_WCTYPE. */
206 /* Declare the interface to extended locale model. */
207 # include <xlocale.h>
209 /* Test for any wide character for which `iswalpha' or `iswdigit' is
211 extern int __iswalnum_l __P ((wint_t __wc, __locale_t __locale));
213 /* Test for any wide character for which `iswupper' or 'iswlower' is
214 true, or any wide character that is one of a locale-specific set of
215 wide-characters for which none of `iswcntrl', `iswdigit',
216 `iswpunct', or `iswspace' is true. */
217 extern int __iswalpha_l __P ((wint_t __wc, __locale_t __locale));
219 /* Test for any control wide character. */
220 extern int __iswcntrl_l __P ((wint_t __wc, __locale_t __locale));
222 /* Test for any wide character that corresponds to a decimal-digit
224 extern int __iswdigit_l __P ((wint_t __wc, __locale_t __locale));
226 /* Test for any wide character for which `iswprint' is true and
227 `iswspace' is false. */
228 extern int __iswgraph_l __P ((wint_t __wc, __locale_t __locale));
230 /* Test for any wide character that corresponds to a lowercase letter
231 or is one of a locale-specific set of wide characters for which
232 none of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true. */
233 extern int __iswlower_l __P ((wint_t __wc, __locale_t __locale));
235 /* Test for any printing wide character. */
236 extern int __iswprint_l __P ((wint_t __wc, __locale_t __locale));
238 /* Test for any printing wide character that is one of a
239 locale-specific et of wide characters for which neither `iswspace'
240 nor `iswalnum' is true. */
241 extern int __iswpunct_l __P ((wint_t __wc, __locale_t __locale));
243 /* Test for any wide character that corresponds to a locale-specific
244 set of wide characters for which none of `iswalnum', `iswgraph', or
245 `iswpunct' is true. */
246 extern int __iswspace_l __P ((wint_t __wc, __locale_t __locale));
248 /* Test for any wide character that corresponds to an uppercase letter
249 or is one of a locale-specific set of wide character for which none
250 of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true. */
251 extern int __iswupper_l __P ((wint_t __wc, __locale_t __locale));
253 /* Test for any wide character that corresponds to a hexadecimal-digit
254 character equivalent to that performed be the functions described
255 in the previous subclause. */
256 extern int __iswxdigit_l __P ((wint_t __wc, __locale_t __locale));
259 /* Construct value that describes a class of wide characters identified
260 by the string argument PROPERTY. */
261 extern wctype_t __wctype_l __P ((__const char *__property,
262 __locale_t __locale));
264 /* Determine whether the wide-character WC has the property described by
266 extern int __iswctype_l __P ((wint_t __wc, wctype_t __desc,
267 __locale_t __locale));
271 * Wide-character case-mapping functions.
274 /* Converts an uppercase letter to the corresponding lowercase letter. */
275 extern wint_t __towlower_l __P ((wint_t __wc, __locale_t __locale));
277 /* Converts an lowercase letter to the corresponding uppercase letter. */
278 extern wint_t __towupper_l __P ((wint_t __wc, __locale_t __locale));
280 /* Map the wide character WC using the mapping described by DESC. */
281 extern wint_t __towctrans_l __P ((wint_t __wc, wctrans_t __desc,
282 __locale_t __locale));
286 # define __iswalnum_l(wc, loc) __iswctype_l ((wc), _ISalnum, (loc))
287 # define __iswalpha_l(wc, loc) __iswctype_l ((wc), _ISalpha, (loc))
288 # define __iswcntrl_l(wc, loc) __iswctype_l ((wc), _IScntrl, (loc))
289 # define __iswdigit_l(wc, loc) __iswctype_l ((wc), _ISdigit, (loc))
290 # define __iswlower_l(wc, loc) __iswctype_l ((wc), _ISlower, (loc))
291 # define __iswgraph_l(wc, loc) __iswctype_l ((wc), _ISgraph, (loc))
292 # define __iswprint_l(wc, loc) __iswctype_l ((wc), _ISprint, (loc))
293 # define __iswpunct_l(wc, loc) __iswctype_l ((wc), _ISpunct, (loc))
294 # define __iswspace_l(wc, loc) __iswctype_l ((wc), _ISspace, (loc))
295 # define __iswupper_l(wc, loc) __iswctype_l ((wc), _ISupper, (loc))
296 # define __iswxdigit_l(wc, loc) __iswctype_l ((wc), _ISxdigit, (loc))
298 # define __iswblank_l(wc, loc) __iswctype_l ((wc), _ISblank, (loc))
300 # define __towlower_l(wc, loc) __towctrans_l ((wc), (loc)->__ctype_tolower, \
302 # define __towupper_l(wc, loc) __towctrans_l ((wc), (loc)->__ctype_toupper, \
305 # endif /* Not __NO_WCTYPE. */
307 #endif /* Use GNU. */
311 #endif /* wctype.h */