1 /* Copyright (C) 1991,92,93,95,96,97,98,99,2001,02
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 * ISO C99 Standard 7.4: Character handling <ctype.h>
28 #include <bits/types.h>
30 #ifdef __UCLIBC_HAS_CTYPE_TABLES__
35 /* These are all the characteristics of characters.
36 If there get to be more than 16 distinct characteristics,
37 __ctype_mask_t will need to be adjusted. */
39 # define _ISbit(bit) (1 << (bit))
43 _ISupper = _ISbit (0), /* UPPERCASE. */
44 _ISlower = _ISbit (1), /* lowercase. */
45 _ISalpha = _ISbit (2), /* Alphabetic. */
46 _ISdigit = _ISbit (3), /* Numeric. */
47 _ISxdigit = _ISbit (4), /* Hexadecimal numeric. */
48 _ISspace = _ISbit (5), /* Whitespace. */
49 _ISprint = _ISbit (6), /* Printing. */
50 _ISgraph = _ISbit (7), /* Graphical. */
51 _ISblank = _ISbit (8), /* Blank (usually SPC and TAB). */
52 _IScntrl = _ISbit (9), /* Control character. */
53 _ISpunct = _ISbit (10), /* Punctuation. */
54 _ISalnum = _ISbit (11) /* Alphanumeric. */
57 #error _ISbit already defined!
60 #include <bits/uClibc_touplow.h>
62 #ifdef __UCLIBC_HAS_CTYPE_SIGNED__
63 # define __UCLIBC_CTYPE_IN_TO_DOMAIN(c) (((unsigned int)((c) + 128)) < 384)
65 #else /* __UCLIBC_HAS_CTYPE_SIGNED__ */
66 # define __UCLIBC_CTYPE_IN_TO_DOMAIN(c) (((unsigned int)(c)) < 256)
68 #endif /* __UCLIBC_HAS_CTYPE_SIGNED__ */
70 /* In the thread-specific locale model (see `uselocale' in <locale.h>)
71 we cannot use global variables for these as was done in the past.
72 Instead, the following accessor functions return the address of
73 each variable, which is local to the current thread if multithreaded.
75 These point into arrays of 384, so they can be indexed by any `unsigned
76 char' value [0,255]; by EOF (-1); or by any `signed char' value
77 [-128,-1). ISO C requires that the ctype functions work for `unsigned
78 char' values and for EOF; we also support negative `signed char' values
79 for broken old programs. The case conversion arrays are of `int's
80 rather than `unsigned char's because tolower (EOF) must be EOF, which
81 doesn't fit into an `unsigned char'. But today more important is that
82 the arrays are also used for multi-byte character sets. */
84 /* uClibc differences:
86 * When __UCLIBC_HAS_CTYPE_SIGNED is defined,
88 * The upper and lower mapping arrays are type int16_t, so that
89 * they may store all char values plus EOF. The glibc reasoning
90 * given above for these being type int is questionable, as the
91 * ctype mapping functions map from the set of (unsigned) char
92 * and EOF back into the set. They have no awareness of multi-byte
97 * The ctype array is defined for -1..255.
98 * The upper and lower mapping arrays are defined for 0..255.
99 * The upper and lower mapping arrays are type unsigned char.
102 /* Pointers to the default C-locale data. */
103 extern const __ctype_mask_t *__C_ctype_b;
104 libc_hidden_proto(__C_ctype_b)
105 extern const __ctype_touplow_t *__C_ctype_toupper;
106 libc_hidden_proto(__C_ctype_toupper)
107 extern const __ctype_touplow_t *__C_ctype_tolower;
108 libc_hidden_proto(__C_ctype_tolower)
110 #ifdef __UCLIBC_HAS_XLOCALE__
112 extern __const __ctype_mask_t **__ctype_b_loc (void)
113 __attribute__ ((__const));
114 libc_hidden_proto(__ctype_b_loc)
115 extern __const __ctype_touplow_t **__ctype_tolower_loc (void)
116 __attribute__ ((__const));
117 libc_hidden_proto(__ctype_tolower_loc)
118 extern __const __ctype_touplow_t **__ctype_toupper_loc (void)
119 __attribute__ ((__const));
120 libc_hidden_proto(__ctype_toupper_loc)
122 #define __UCLIBC_CTYPE_B (*__ctype_b_loc())
123 #define __UCLIBC_CTYPE_TOLOWER (*__ctype_tolower_loc())
124 #define __UCLIBC_CTYPE_TOUPPER (*__ctype_toupper_loc())
126 #else /* __UCLIBC_HAS_XLOCALE__ */
128 /* Pointers to the current global locale data in use. */
129 extern const __ctype_mask_t *__ctype_b;
130 libc_hidden_proto(__ctype_b)
131 extern const __ctype_touplow_t *__ctype_toupper;
132 libc_hidden_proto(__ctype_toupper)
133 extern const __ctype_touplow_t *__ctype_tolower;
134 libc_hidden_proto(__ctype_tolower)
136 #define __UCLIBC_CTYPE_B (__ctype_b)
137 #define __UCLIBC_CTYPE_TOLOWER (__ctype_tolower)
138 #define __UCLIBC_CTYPE_TOUPPER (__ctype_toupper)
140 #endif /* __UCLIBC_HAS_XLOCALE__ */
142 #define __isctype(c, type) \
143 ((__UCLIBC_CTYPE_B)[(int) (c)] & (__ctype_mask_t) type)
145 #define __isascii(c) (((c) & ~0x7f) == 0) /* If C is a 7 bit value. */
146 #define __toascii(c) ((c) & 0x7f) /* Mask off high bits. */
148 #if defined _LIBC && (defined IS_IN_libc || defined NOT_IN_libc)
149 /* isdigit() is really locale-invariant, so provide some small fast macros.
150 * These are uClibc-specific. */
151 #define __isdigit_char(C) (((unsigned char)((C) - '0')) <= 9)
152 #define __isdigit_int(C) (((unsigned int)((C) - '0')) <= 9)
155 #define __exctype(name) extern int name (int) __THROW
157 __BEGIN_NAMESPACE_STD
159 /* The following names are all functions:
160 int isCHARACTERISTIC(int c);
161 which return nonzero iff C has CHARACTERISTIC.
162 For the meaning of the characteristic names, see the `enum' above. */
164 libc_hidden_proto(isalnum)
166 libc_hidden_proto(isalpha)
168 libc_hidden_proto(iscntrl)
170 libc_hidden_proto(isdigit)
172 libc_hidden_proto(islower)
174 libc_hidden_proto(isgraph)
176 libc_hidden_proto(isprint)
178 libc_hidden_proto(ispunct)
180 libc_hidden_proto(isspace)
182 libc_hidden_proto(isupper)
183 __exctype (isxdigit);
184 libc_hidden_proto(isxdigit)
187 /* Return the lowercase version of C. */
188 extern int tolower (int __c) __THROW;
189 libc_hidden_proto(tolower)
191 /* Return the uppercase version of C. */
192 extern int toupper (int __c) __THROW;
193 libc_hidden_proto(toupper)
198 /* ISO C99 introduced one new function. */
200 __BEGIN_NAMESPACE_C99
203 libc_hidden_proto(isblank)
209 /* Test C for a set of character classes according to MASK. */
210 extern int isctype (int __c, int __mask) __THROW;
213 #if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
215 /* Return nonzero iff C is in the ASCII set
216 (i.e., is no more than 7 bits wide). */
217 extern int isascii (int __c) __THROW;
218 libc_hidden_proto(isascii)
220 /* Return the part of C that is in the ASCII set
221 (i.e., the low-order 7 bits of C). */
222 extern int toascii (int __c) __THROW;
224 /* These are the same as `toupper' and `tolower' except that they do not
225 check the argument for being in the range of a `char'. */
226 __exctype (_toupper);
227 __exctype (_tolower);
228 #endif /* Use SVID or use misc. */
230 /* This code is needed for the optimized mapping functions. */
231 #define __tobody(c, f, a, args) \
234 if (sizeof (c) > 1) \
236 if (__builtin_constant_p (c)) \
239 __res = __UCLIBC_CTYPE_IN_TO_DOMAIN(__c) ? (a)[__c] : __c; \
245 __res = (a)[(int) (c)]; \
248 #if !defined __NO_CTYPE && !defined __cplusplus
249 # define isalnum(c) __isctype((c), _ISalnum)
250 # define isalpha(c) __isctype((c), _ISalpha)
251 # define iscntrl(c) __isctype((c), _IScntrl)
252 # define isdigit(c) __isctype((c), _ISdigit)
253 # define islower(c) __isctype((c), _ISlower)
254 # define isgraph(c) __isctype((c), _ISgraph)
255 # define isprint(c) __isctype((c), _ISprint)
256 # define ispunct(c) __isctype((c), _ISpunct)
257 # define isspace(c) __isctype((c), _ISspace)
258 # define isupper(c) __isctype((c), _ISupper)
259 # define isxdigit(c) __isctype((c), _ISxdigit)
262 # define isblank(c) __isctype((c), _ISblank)
265 # ifdef __USE_EXTERN_INLINES
267 __NTH (tolower (int __c))
269 return __UCLIBC_CTYPE_IN_TO_DOMAIN(__c) ? (__UCLIBC_CTYPE_TOLOWER)[__c] : __c;
273 __NTH (toupper (int __c))
275 return __UCLIBC_CTYPE_IN_TO_DOMAIN(__c) ? (__UCLIBC_CTYPE_TOUPPER)[__c] : __c;
279 # if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
280 # define tolower(c) __tobody (c, tolower, __UCLIBC_CTYPE_TOLOWER, (c))
281 # define toupper(c) __tobody (c, toupper, __UCLIBC_CTYPE_TOUPPER, (c))
282 # endif /* Optimizing gcc */
284 # if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
285 # define isascii(c) __isascii (c)
286 # define toascii(c) __toascii (c)
288 # define _tolower(c) ((int) (__UCLIBC_CTYPE_TOLOWER)[(int) (c)])
289 # define _toupper(c) ((int) (__UCLIBC_CTYPE_TOUPPER)[(int) (c)])
292 #endif /* Not __NO_CTYPE. */
295 #if defined(__USE_GNU) && defined(__UCLIBC_HAS_XLOCALE__)
296 /* The concept of one static locale per category is not very well
297 thought out. Many applications will need to process its data using
298 information from several different locales. Another application is
299 the implementation of the internationalization handling in the
300 upcoming ISO C++ standard library. To support this another set of
301 the functions using locale data exist which have an additional
304 Attention: all these functions are *not* standardized in any form.
305 This is a proof-of-concept implementation. */
307 /* Structure for reentrant locale using functions. This is an
308 (almost) opaque type for the user level programs. */
309 # include <xlocale.h>
311 /* These definitions are similar to the ones above but all functions
312 take as an argument a handle for the locale which shall be used. */
313 # define __isctype_l(c, type, locale) \
314 ((locale)->__ctype_b[(int) (c)] & (__ctype_mask_t) type)
316 # define __exctype_l(name) \
317 extern int name (int, __locale_t) __THROW
319 /* The following names are all functions:
320 int isCHARACTERISTIC(int c, locale_t *locale);
321 which return nonzero iff C has CHARACTERISTIC.
322 For the meaning of the characteristic names, see the `enum' above. */
323 __exctype_l (isalnum_l);
324 libc_hidden_proto(isalnum_l)
325 __exctype_l (isalpha_l);
326 libc_hidden_proto(isalpha_l)
327 __exctype_l (iscntrl_l);
328 libc_hidden_proto(iscntrl_l)
329 __exctype_l (isdigit_l);
330 libc_hidden_proto(isdigit_l)
331 __exctype_l (islower_l);
332 libc_hidden_proto(islower_l)
333 __exctype_l (isgraph_l);
334 libc_hidden_proto(isgraph_l)
335 __exctype_l (isprint_l);
336 libc_hidden_proto(isprint_l)
337 __exctype_l (ispunct_l);
338 libc_hidden_proto(ispunct_l)
339 __exctype_l (isspace_l);
340 libc_hidden_proto(isspace_l)
341 __exctype_l (isupper_l);
342 libc_hidden_proto(isupper_l)
343 __exctype_l (isxdigit_l);
344 libc_hidden_proto(isxdigit_l)
345 __exctype_l (isblank_l);
346 libc_hidden_proto(isblank_l)
348 #if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
350 /* Return nonzero iff C is in the ASCII set
351 (i.e., is no more than 7 bits wide). */
352 extern int isascii_l (int __c) __THROW;
353 libc_hidden_proto(isascii_l)
357 /* Return the lowercase version of C in locale L. */
358 extern int __tolower_l (int __c, __locale_t __l) __THROW;
359 extern int tolower_l (int __c, __locale_t __l) __THROW;
360 libc_hidden_proto(tolower_l)
362 /* Return the uppercase version of C. */
363 extern int __toupper_l (int __c, __locale_t __l) __THROW;
364 extern int toupper_l (int __c, __locale_t __l) __THROW;
365 libc_hidden_proto(toupper_l)
367 # if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
368 # define __tolower_l(c, locale) \
369 __tobody (c, __tolower_l, (locale)->__ctype_tolower, (c, locale))
370 # define __toupper_l(c, locale) \
371 __tobody (c, __toupper_l, (locale)->__ctype_toupper, (c, locale))
372 # define tolower_l(c, locale) __tolower_l ((c), (locale))
373 # define toupper_l(c, locale) __toupper_l ((c), (locale))
374 # endif /* Optimizing gcc */
378 # define __isalnum_l(c,l) __isctype_l((c), _ISalnum, (l))
379 # define __isalpha_l(c,l) __isctype_l((c), _ISalpha, (l))
380 # define __iscntrl_l(c,l) __isctype_l((c), _IScntrl, (l))
381 # define __isdigit_l(c,l) __isctype_l((c), _ISdigit, (l))
382 # define __islower_l(c,l) __isctype_l((c), _ISlower, (l))
383 # define __isgraph_l(c,l) __isctype_l((c), _ISgraph, (l))
384 # define __isprint_l(c,l) __isctype_l((c), _ISprint, (l))
385 # define __ispunct_l(c,l) __isctype_l((c), _ISpunct, (l))
386 # define __isspace_l(c,l) __isctype_l((c), _ISspace, (l))
387 # define __isupper_l(c,l) __isctype_l((c), _ISupper, (l))
388 # define __isxdigit_l(c,l) __isctype_l((c), _ISxdigit, (l))
390 # define __isblank_l(c,l) __isctype_l((c), _ISblank, (l))
392 # if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
393 # define __isascii_l(c,l) ((l), __isascii (c))
394 # define __toascii_l(c,l) ((l), __toascii (c))
397 # define isalnum_l(c,l) __isalnum_l ((c), (l))
398 # define isalpha_l(c,l) __isalpha_l ((c), (l))
399 # define iscntrl_l(c,l) __iscntrl_l ((c), (l))
400 # define isdigit_l(c,l) __isdigit_l ((c), (l))
401 # define islower_l(c,l) __islower_l ((c), (l))
402 # define isgraph_l(c,l) __isgraph_l ((c), (l))
403 # define isprint_l(c,l) __isprint_l ((c), (l))
404 # define ispunct_l(c,l) __ispunct_l ((c), (l))
405 # define isspace_l(c,l) __isspace_l ((c), (l))
406 # define isupper_l(c,l) __isupper_l ((c), (l))
407 # define isxdigit_l(c,l) __isxdigit_l ((c), (l))
409 # define isblank_l(c,l) __isblank_l ((c), (l))
411 # if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
412 # define isascii_l(c,l) __isascii_l ((c), (l))
413 # define toascii_l(c,l) __toascii_l ((c), (l))
416 # endif /* Not __NO_CTYPE. */
418 #endif /* Use GNU. */
422 #else /* __UCLIBC_HAS_CTYPE_TABLES__ */
424 #include <bits/uClibc_ctype.h>