1 /* Copyright (C) 1996 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
16 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
20 * ISO/IEC 9899:1990/Amendment 1:1995 7.15:
21 * Wide-character classification and mapping utilities <wctype.h>
32 /* FIXME: should this go into <stddef.h>??? */
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. */
41 #ifndef __have_wint_t_defined
42 #define __have_wint_t_defined 1
43 /* This is a hack!!! */
44 typedef unsigned int wint_t;
48 /* Scalar type that can hold values which represent locale-specific
49 character mappings. */
50 typedef const unsigned int *wctrans_t;
52 /* Scalar type that can hold values which represent locale-specific
53 character classifications. */
54 typedef unsigned long int wctype_t;
56 /* Constant expression of type `wint_t' whose value does not correspond
57 to any member of the extended character set. */
59 #define WEOF (0xffffffffu)
63 /* These are all the characteristics of characters.
64 If there get to be more than 16 distinct characteristics,
65 many things must be changed that use `unsigned short int's.
67 The characteristics are stored always in network byte order (big
68 endian). We define the bit value interpretations here dependent on the
69 machine's byte order. */
72 #if __BYTE_ORDER == __BIG_ENDIAN
73 #define _ISbit(bit) (1 << bit)
74 #else /* __BYTE_ORDER == __LITTLE_ENDIAN */
75 #define _ISbit(bit) (bit < 8 ? ((1 << bit) << 8) : ((1 << bit) >> 8))
80 _ISupper = _ISbit (0), /* UPPERCASE. */
81 _ISlower = _ISbit (1), /* lowercase. */
82 _ISalpha = _ISbit (2), /* Alphabetic. */
83 _ISdigit = _ISbit (3), /* Numeric. */
84 _ISxdigit = _ISbit (4), /* Hexadecimal numeric. */
85 _ISspace = _ISbit (5), /* Whitespace. */
86 _ISprint = _ISbit (6), /* Printing. */
87 _ISgraph = _ISbit (7), /* Graphical. */
88 _ISblank = _ISbit (8), /* Blank (usually SPC and TAB). */
89 _IScntrl = _ISbit (9), /* Control character. */
90 _ISpunct = _ISbit (10), /* Punctuation. */
91 _ISalnum = _ISbit (11) /* Alphanumeric. */
93 #endif /* Not _ISbit */
97 * Wide-character classification functions: 7.15.2.1.
100 /* Test for any wide character for which `iswalpha' or `iswdigit' is
102 int iswalnum __P ((wint_t __wc));
104 /* Test for any wide character for which `iswupper' or 'iswlower' is
105 true, or any wide character that is one of a locale-specific set of
106 wide-characters for which none of `iswcntrl', `iswdigit',
107 `iswpunct', or `iswspace' is true. */
108 int iswalpha __P ((wint_t __wc));
110 /* Test for any control wide character. */
111 int iswcntrl __P ((wint_t __wc));
113 /* Test for any wide character that corresponds to a decimal-digit
115 int iswdigit __P ((wint_t __wc));
117 /* Test for any wide character for which `iswprint' is true and
118 `iswspace' is false. */
119 int iswgraph __P ((wint_t __wc));
121 /* Test for any wide character that corresponds to a lowercase letter
122 or is one of a locale-specific set of wide characters for which
123 none of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true. */
124 int iswlower __P ((wint_t __wc));
126 /* Test for any printing wide character. */
127 int iswprint __P ((wint_t __wc));
129 /* Test for any printing wide character that is one of a
130 locale-specific et of wide characters for which neither `iswspace'
131 nor `iswalnum' is true. */
132 int iswpunct __P ((wint_t __wc));
134 /* Test for any wide character that corresponds to a locale-specific
135 set of wide characters for which none of `iswalnum', `iswgraph', or
136 `iswpunct' is true. */
137 int iswspace __P ((wint_t __wc));
139 /* Test for any wide character that corresponds to an uppercase letter
140 or is one of a locale-specific set of wide character for which none
141 of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true. */
142 int iswupper __P ((wint_t __wc));
144 /* Test for any wide character that corresponds to a hexadecimal-digit
145 character equivalent to that performed be the functions described
146 in the previous subclause. */
147 int iswxdigit __P ((wint_t __wc));
150 * Extensible wide-character classification functions: 7.15.2.2.
153 /* Construct value that describes a class of wide characters identified
154 by the string argument PROPERTY. */
155 wctype_t wctype __P ((__const char *__property));
157 /* Determine whether the wide-character WC has the property described by
159 int iswctype __P ((wint_t __wc, wctype_t __desc));
163 * Wide-character case-mapping functions: 7.15.3.1.
166 /* Converts an uppercase letter to the corresponding lowercase letter. */
167 wint_t towlower __P ((wint_t __wc));
169 /* Converts an lowercase letter to the corresponding uppercase letter. */
170 wint_t towupper __P ((wint_t __wc));
173 * Extensible wide-character mapping functions: 7.15.3.2.
176 /* Construct value that describes a mapping between wide characters
177 identified by the string argument PROPERTY. */
178 wctrans_t wctrans __P ((__const char *__property));
180 /* Map the wide character WC using the mapping described by DESC. */
181 wint_t towctrans __P ((wint_t __wc, wctrans_t __desc));
186 #define iswalnum(wc) iswctype ((wc), _ISalnum)
187 #define iswalpha(wc) iswctype ((wc), _ISalpha)
188 #define iswcntrl(wc) iswctype ((wc), _IScntrl)
189 #define iswdigit(wc) iswctype ((wc), _ISdigit)
190 #define iswlower(wc) iswctype ((wc), _ISlower)
191 #define iswgraph(wc) iswctype ((wc), _ISgraph)
192 #define iswprint(wc) iswctype ((wc), _ISprint)
193 #define iswpunct(wc) iswctype ((wc), _ISpunct)
194 #define iswspace(wc) iswctype ((wc), _ISspace)
195 #define iswupper(wc) iswctype ((wc), _ISupper)
196 #define iswxdigit(wc) iswctype ((wc), _ISxdigit)
199 #define iswblank(wc) iswctype ((wc), _ISblank)
202 /* Pointer to conversion tables. */
203 extern __const int *__ctype_tolower; /* Case conversions. */
204 extern __const int *__ctype_toupper; /* Case conversions. */
206 #define towlower(wc) towctrans (wc, __ctype_tolower)
207 #define towupper(wc) towctrans (wc, __ctype_toupper)
209 #endif /* Not __NO_WCTYPE. */
213 #endif /* wctype.h */