1 /* Copyright (C) 2002 Manuel Novoa III
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public
5 * License as published by the Free Software Foundation; either
6 * version 2.1 of the License, or (at your option) any later version.
8 * The GNU C Library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with the GNU C Library; if not, write to the Free
15 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 /* ATTENTION! ATTENTION! ATTENTION! ATTENTION! ATTENTION!
21 * Besides uClibc, I'm using this code in my libc for elks, which is
22 * a 16-bit environment with a fairly limited compiler. It would make
23 * things much easier for me if this file isn't modified unnecessarily.
24 * In particular, please put any new or replacement functions somewhere
25 * else, and modify the makefile to use your version instead.
28 * ATTENTION! ATTENTION! ATTENTION! ATTENTION! ATTENTION! */
30 #if !defined(_CTYPE_H) && !defined(_WCTYPE_H)
31 #error Always include <{w}ctype.h> rather than <bits/uClibc_ctype.h>
37 #ifdef __UCLIBC_GEN_LOCALE
39 /* Taking advantage of the C99 mutual-exclusion guarantees for the various
40 * (w)ctype classes, including the descriptions of printing and control
41 * (w)chars, we can place each in one of the following mutually-exlusive
42 * subsets. Since there are less than 16, we can store the data for
43 * each (w)chars in a nibble. In contrast, glibc uses an unsigned int
44 * per (w)char, with one bit flag for each is* type. While this allows
45 * a simple '&' operation to determine the type vs. a range test and a
46 * little special handling for the "blank" and "xdigit" types in my
47 * approach, it also uses 8 times the space for the tables on the typical
48 * 32-bit archs we supported.*/
50 __CTYPE_unclassified = 0,
51 __CTYPE_alpha_nonupper_nonlower,
53 __CTYPE_alpha_upper_lower,
58 __CTYPE_print_space_nonblank,
59 __CTYPE_print_space_blank,
60 __CTYPE_space_nonblank_noncntrl,
61 __CTYPE_space_blank_noncntrl,
62 __CTYPE_cntrl_space_nonblank,
63 __CTYPE_cntrl_space_blank,
64 __CTYPE_cntrl_nonspace
67 /* Some macros that test for various (w)ctype classes when passed one of the
68 * designator values enumerated above. */
69 #define __CTYPE_isalnum(D) ((unsigned int)(D-1) <= (__CTYPE_digit-1))
70 #define __CTYPE_isalpha(D) ((unsigned int)(D-1) <= (__CTYPE_alpha_upper-1))
71 #define __CTYPE_isblank(D) \
72 ((((unsigned int)(D - __CTYPE_print_space_nonblank)) <= 5) && (D & 1))
73 #define __CTYPE_iscntrl(D) (((unsigned int)(D - __CTYPE_cntrl_space_nonblank)) <= 2)
74 #define __CTYPE_isdigit(D) (D == __CTYPE_digit)
75 #define __CTYPE_isgraph(D) ((unsigned int)(D-1) <= (__CTYPE_graph-1))
76 #define __CTYPE_islower(D) (((unsigned int)(D - __CTYPE_alpha_lower)) <= 1)
77 #define __CTYPE_isprint(D) ((unsigned int)(D-1) <= (__CTYPE_print_space_blank-1))
78 #define __CTYPE_ispunct(D) (D == __CTYPE_punct)
79 #define __CTYPE_isspace(D) (((unsigned int)(D - __CTYPE_print_space_nonblank)) <= 5)
80 #define __CTYPE_isupper(D) (((unsigned int)(D - __CTYPE_alpha_upper_lower)) <= 1)
81 /* #define __CTYPE_isxdigit(D) -- isxdigit is untestable this way.
82 * But that's ok as isxdigit() (and isdigit() too) are locale-invariant. */
84 #else /* __UCLIBC_GEN_LOCALE *****************************************/
86 /* Define some ctype macros valid for the C/POSIX locale. */
88 /* ASCII ords of \t, \f, \n, \r, and \v are 9, 12, 10, 13, 11 respectively. */
89 #define __C_isspace(c) \
90 ((sizeof(c) == sizeof(char)) \
91 ? ((((c) == ' ') || (((unsigned char)((c) - 9)) <= (13 - 9)))) \
92 : ((((c) == ' ') || (((unsigned int)((c) - 9)) <= (13 - 9)))))
93 #define __C_isblank(c) (((c) == ' ') || ((c) == '\t'))
94 #define __C_isdigit(c) \
95 ((sizeof(c) == sizeof(char)) \
96 ? (((unsigned char)((c) - '0')) < 10) \
97 : (((unsigned int)((c) - '0')) < 10))
98 #define __C_isxdigit(c) \
100 || ((sizeof(c) == sizeof(char)) \
101 ? (((unsigned char)((((c)) | 0x20) - 'a')) < 6) \
102 : (((unsigned int)((((c)) | 0x20) - 'a')) < 6)))
103 #define __C_iscntrl(c) \
104 ((sizeof(c) == sizeof(char)) \
105 ? ((((unsigned char)(c)) < 0x20) || ((c) == 0x7f)) \
106 : ((((unsigned int)(c)) < 0x20) || ((c) == 0x7f)))
107 #define __C_isalpha(c) \
108 ((sizeof(c) == sizeof(char)) \
109 ? (((unsigned char)(((c) | 0x20) - 'a')) < 26) \
110 : (((unsigned int)(((c) | 0x20) - 'a')) < 26))
111 #define __C_isalnum(c) (__C_isalpha(c) || __C_isdigit(c))
112 #define __C_isprint(c) \
113 ((sizeof(c) == sizeof(char)) \
114 ? (((unsigned char)((c) - 0x20)) <= (0x7e - 0x20)) \
115 : (((unsigned int)((c) - 0x20)) <= (0x7e - 0x20)))
116 #define __C_islower(c) \
117 ((sizeof(c) == sizeof(char)) \
118 ? (((unsigned char)((c) - 'a')) < 26) \
119 : (((unsigned int)((c) - 'a')) < 26))
120 #define __C_isupper(c) \
121 ((sizeof(c) == sizeof(char)) \
122 ? (((unsigned char)((c) - 'A')) < 26) \
123 : (((unsigned int)((c) - 'A')) < 26))
124 #define __C_ispunct(c) \
126 && ((sizeof(c) == sizeof(char)) \
127 ? (((unsigned char)((c) - 0x21)) <= (0x7e - 0x21)) \
128 : (((unsigned int)((c) - 0x21)) <= (0x7e - 0x21))))
129 #define __C_isgraph(c) \
130 ((sizeof(c) == sizeof(char)) \
131 ? (((unsigned int)((c) - 0x21)) <= (0x7e - 0x21)) \
132 : (((unsigned int)((c) - 0x21)) <= (0x7e - 0x21)))
134 #define __C_tolower(c) (__C_isupper(c) ? ((c) | 0x20) : (c))
135 #define __C_toupper(c) (__C_islower(c) ? ((c) ^ 0x20) : (c))
137 /**********************************************************************/
140 extern int isalnum(int c) __THROW;
141 extern int isalpha(int c) __THROW;
143 extern int isblank(int c) __THROW;
145 extern int iscntrl(int c) __THROW;
146 extern int isdigit(int c) __THROW;
147 extern int isgraph(int c) __THROW;
148 extern int islower(int c) __THROW;
149 extern int isprint(int c) __THROW;
150 extern int ispunct(int c) __THROW;
151 extern int isspace(int c) __THROW;
152 extern int isupper(int c) __THROW;
153 extern int isxdigit(int c) __THROW;
155 extern int tolower(int c) __THROW;
156 extern int toupper(int c) __THROW;
158 #if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
159 extern int isascii(int c) __THROW;
160 extern int toascii(int c) __THROW;
163 #if defined _LIBC && (defined NOT_IN_libc || defined IS_IN_libc)
164 /* isdigit() is really locale-invariant, so provide some small fast macros.
165 * These are uClibc-specific. */
166 #define __isdigit_char(C) (((unsigned char)((C) - '0')) <= 9)
167 #define __isdigit_int(C) (((unsigned int)((C) - '0')) <= 9)
170 /* Next, some ctype macros which are valid for all supported locales. */
171 /* WARNING: isspace and isblank need to be reverified if more 8-bit codesets
172 * are added!!! But isdigit and isxdigit are always valid. */
174 /* #define __isspace(c) __C_isspace(c) */
175 /* #define __isblank(c) __C_isblank(c) */
177 /* #define __isdigit(c) __C_isdigit(c) */
178 /* #define __isxdigit(c) __C_isxdigit(c) */
180 /* Now some non-ansi/iso c99 macros. */
182 #define __isascii(c) (((c) & ~0x7f) == 0)
183 #define __toascii(c) ((c) & 0x7f)
184 #define _toupper(c) ((c) ^ 0x20)
185 #define _tolower(c) ((c) | 0x20)
189 /**********************************************************************/
192 #define __isbody_C_macro(f,args) __C_ ## f args
194 #define __isbody(f,c) \
197 if (sizeof(c) > sizeof(char)) { \
199 __res = __isbody_C_macro(f,(__c)); \
201 unsigned char __c = (c); \
202 __res = __isbody_C_macro(f,(__c)); \
207 #define __body_C_macro(f,args) __C_ ## f args
209 #define __body(f,c) \
212 if (sizeof(c) > sizeof(char)) { \
214 __res = __body_C_macro(f,(__c)); \
216 unsigned char __c = (c); \
217 __res = __body_C_macro(f,(__c)); \
222 #define __isspace(c) __body(isspace,c)
223 #define __isblank(c) __body(isblank,c)
224 #define __isdigit(c) __body(isdigit,c)
225 #define __isxdigit(c) __body(isxdigit,c)
226 #define __iscntrl(c) __body(iscntrl,c)
227 #define __isalpha(c) __body(isalpha,c)
228 #define __isalnum(c) __body(isalnum,c)
229 #define __isprint(c) __body(isprint,c)
230 #define __islower(c) __body(islower,c)
231 #define __isupper(c) __body(isupper,c)
232 #define __ispunct(c) __body(ispunct,c)
233 #define __isgraph(c) __body(isgraph,c)
235 #define __tolower(c) __body(tolower,c)
236 #define __toupper(c) __body(toupper,c)
238 #if !defined __NO_CTYPE && !defined __cplusplus
240 #define isspace(c) __isspace(c)
241 #define isblank(c) __isblank(c)
242 #define isdigit(c) __isdigit(c)
243 #define isxdigit(c) __isxdigit(c)
244 #define iscntrl(c) __iscntrl(c)
245 #define isalpha(c) __isalpha(c)
246 #define isalnum(c) __isalnum(c)
247 #define isprint(c) __isprint(c)
248 #define islower(c) __islower(c)
249 #define isupper(c) __isupper(c)
250 #define ispunct(c) __ispunct(c)
251 #define isgraph(c) __isgraph(c)
253 #define tolower(c) __tolower(c)
254 #define toupper(c) __toupper(c)
259 #else /* _GNUC__ ***************************************************/
261 #if !defined __NO_CTYPE && !defined __cplusplus
263 /* These macros should be safe from side effects. */
265 #define isdigit(c) __C_isdigit(c)
266 #define isalpha(c) __C_isalpha(c)
267 #define isprint(c) __C_isprint(c)
268 #define islower(c) __C_islower(c)
269 #define isupper(c) __C_isupper(c)
270 #define isgraph(c) __C_isgraph(c)
274 #endif /* __GNUC__ */
275 /**********************************************************************/
277 #endif /* __UCLIBC_GEN_LOCALE */
279 #endif /* _BITS_CTYPE_H */