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. 4 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. 9 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. 14 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 18 02111-1307 USA. */ 19 20/* 21 * ISO C99 Standard 7.4: Character handling <ctype.h> 22 */ 23 24#ifndef _CTYPE_H 25#define _CTYPE_H 1 26 27#include <features.h> 28#include <bits/types.h> 29 30__BEGIN_DECLS 31__BEGIN_NAMESPACE_STD 32 33/* The following names are all functions: 34 int isCHARACTERISTIC(int c); 35 which return nonzero iff C has CHARACTERISTIC. 36 For the meaning of the characteristic names, see the `enum' above. */ 37extern int isalnum(int __c) __THROW; 38extern int isalpha(int __c) __THROW; 39extern int iscntrl(int __c) __THROW; 40extern int isdigit(int __c) __THROW; 41extern int islower(int __c) __THROW; 42extern int isgraph(int __c) __THROW; 43extern int isprint(int __c) __THROW; 44extern int ispunct(int __c) __THROW; 45extern int isspace(int __c) __THROW; 46extern int isupper(int __c) __THROW; 47extern int isxdigit(int __c) __THROW; 48 49 50/* Return the lowercase version of C. */ 51extern int tolower(int __c) __THROW; 52 53/* Return the uppercase version of C. */ 54extern int toupper(int __c) __THROW; 55 56#if (defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN) && \ 57 defined __UCLIBC_SUSV4_LEGACY__ 58/* Return nonzero iff C is in the ASCII set 59 (i.e., is no more than 7 bits wide). */ 60extern int isascii(int __c) __THROW; 61/* Return the part of C that is in the ASCII set 62 (i.e., the low-order 7 bits of C). */ 63extern int toascii(int __c) __THROW; 64#endif 65 66__END_NAMESPACE_STD 67 68 69/* ISO C99 introduced one new function. */ 70#ifdef __USE_ISOC99 71__BEGIN_NAMESPACE_C99 72 73//extern int isblank(int __c) __THROW; 74 75__END_NAMESPACE_C99 76#endif 77__END_DECLS 78 79#ifndef __UCLIBC_HAS_CTYPE_TABLES__ 80 81/* "Stub locale": we are permanently in C/POSIX locale. 82 * Using simple(r) ctype.h machinery in this header instead: */ 83#include <bits/uClibc_ctype.h> 84 85#else 86 87__BEGIN_DECLS 88 89#ifndef _ISbit 90/* These are all the characteristics of characters. 91 If there get to be more than 16 distinct characteristics, 92 __ctype_mask_t will need to be adjusted. */ 93 94/* libstdc++ from gcc toolchain needs this macro. */ 95# define _ISbit(bit) (1 << (bit)) 96 97enum 98{ 99 _ISupper = _ISbit (0), /* UPPERCASE. */ 100 _ISlower = _ISbit (1), /* lowercase. */ 101 _ISalpha = _ISbit (2), /* Alphabetic. */ 102 _ISdigit = _ISbit (3), /* Numeric. */ 103 _ISxdigit = _ISbit (4), /* Hexadecimal numeric. */ 104 _ISspace = _ISbit (5), /* Whitespace. */ 105 _ISprint = _ISbit (6), /* Printing. */ 106 _ISgraph = _ISbit (7), /* Graphical. */ 107 _ISblank = _ISbit (8), /* Blank (usually SPC and TAB). */ 108 _IScntrl = _ISbit (9), /* Control character. */ 109 _ISpunct = _ISbit (10), /* Punctuation. */ 110 _ISalnum = _ISbit (11) /* Alphanumeric. */ 111}; 112#else 113#error _ISbit already defined! 114#endif /* ! _ISbit */ 115 116/* __ctype_XXX_t types and __UCLIBC_CTYPE_x_TBL_OFFSET constants */ 117#include <bits/uClibc_touplow.h> 118 119#ifdef __UCLIBC_HAS_CTYPE_SIGNED__ 120# define __UCLIBC_CTYPE_IN_TO_DOMAIN(c) (((unsigned int)((c) + 128)) < 384) 121#else 122# define __UCLIBC_CTYPE_IN_TO_DOMAIN(c) (((unsigned int)(c)) < 256) 123#endif 124 125/* In the thread-specific locale model (see `uselocale' in <locale.h>) 126 we cannot use global variables for these as was done in the past. 127 Instead, the following accessor functions return the address of 128 each variable, which is local to the current thread if multithreaded. 129 130 These point into arrays of 384, so they can be indexed by any `unsigned 131 char' value [0,255]; by EOF (-1); or by any `signed char' value 132 [-128,-1). ISO C requires that the ctype functions work for `unsigned 133 char' values and for EOF; we also support negative `signed char' values 134 for broken old programs. The case conversion arrays are of `int's 135 rather than `unsigned char's because tolower (EOF) must be EOF, which 136 doesn't fit into an `unsigned char'. But today more important is that 137 the arrays are also used for multi-byte character sets. */ 138 139/* uClibc differences: 140 * 141 * When __UCLIBC_HAS_CTYPE_SIGNED is defined, 142 * 143 * The upper and lower mapping arrays are type int16_t, so that 144 * they may store all char values plus EOF. The glibc reasoning 145 * given above for these being type int is questionable, as the 146 * ctype mapping functions map from the set of (unsigned) char 147 * and EOF back into the set. They have no awareness of multi-byte 148 * or wide characters. 149 * 150 * Otherwise, 151 * 152 * The ctype array is defined for -1..255. 153 * The upper and lower mapping arrays are defined for 0..255. 154 * The upper and lower mapping arrays are type unsigned char. 155 */ 156 157/* Pointers to the default C-locale data. */ 158extern const __ctype_mask_t *__C_ctype_b; 159extern const __ctype_touplow_t *__C_ctype_toupper; 160extern const __ctype_touplow_t *__C_ctype_tolower; 161 162#ifdef __UCLIBC_HAS_XLOCALE__ 163 164const __ctype_mask_t **__ctype_b_loc(void) __attribute__ ((const)); 165const __ctype_touplow_t **__ctype_tolower_loc(void) __attribute__ ((const)); 166const __ctype_touplow_t **__ctype_toupper_loc(void) __attribute__ ((const)); 167#define __UCLIBC_CTYPE_B (*__ctype_b_loc()) 168#define __UCLIBC_CTYPE_TOLOWER (*__ctype_tolower_loc()) 169#define __UCLIBC_CTYPE_TOUPPER (*__ctype_toupper_loc()) 170 171#else /* __UCLIBC_HAS_XLOCALE__ */ 172 173/* Pointers to the current global locale data in use. */ 174extern const __ctype_mask_t *__ctype_b; 175extern const __ctype_touplow_t *__ctype_toupper; 176extern const __ctype_touplow_t *__ctype_tolower; 177#define __UCLIBC_CTYPE_B (__ctype_b) 178#define __UCLIBC_CTYPE_TOLOWER (__ctype_tolower) 179#define __UCLIBC_CTYPE_TOUPPER (__ctype_toupper) 180 181#endif /* __UCLIBC_HAS_XLOCALE__ */ 182 183#ifdef __UCLIBC_SUSV4_LEGACY__ 184#define __isascii(c) (((c) & ~0x7f) == 0) /* If C is a 7 bit value. */ 185#define __toascii(c) ((c) & 0x7f) /* Mask off high bits. */ 186#endif 187 188 189#ifdef __USE_GNU 190/* Test C for a set of character classes according to MASK. */ 191extern int isctype(int __c, int __mask) __THROW; 192#endif 193 194#if (defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN) \ 195 && defined __UCLIBC_SUSV4_LEGACY__ 196/* These are the same as `toupper' and `tolower' except that they do not 197 check the argument for being in the range of a `char'. */ 198extern int _toupper(int __c) __THROW; 199extern int _tolower(int __c) __THROW; 200#endif /* Use SVID or use misc. */ 201 202/* This code is needed for the optimized mapping functions. */ 203#define __tobody(c, f, table, args) \ 204(__extension__ ({ \ 205 int __res; \ 206 if (sizeof(c) > 1) { \ 207 if (__builtin_constant_p(c)) { \ 208 int __c = (c); \ 209 __res = __UCLIBC_CTYPE_IN_TO_DOMAIN(__c) ? (table)[__c] : __c; \ 210 } else \ 211 __res = f args; \ 212 } else \ 213 __res = (table)[(int) (c)]; \ 214 __res; \ 215})) 216 217#define __isctype(c, type) ((__UCLIBC_CTYPE_B)[(int)(c)] & (__ctype_mask_t)type) 218/* Do not combine in one #if - unifdef tool is not that clever */ 219#ifndef __cplusplus 220# define isalnum(c) __isctype((c), _ISalnum) 221# define isalpha(c) __isctype((c), _ISalpha) 222# define iscntrl(c) __isctype((c), _IScntrl) 223# define isdigit(c) __isctype((c), _ISdigit) 224# define islower(c) __isctype((c), _ISlower) 225# define isgraph(c) __isctype((c), _ISgraph) 226# define isprint(c) __isctype((c), _ISprint) 227# define ispunct(c) __isctype((c), _ISpunct) 228# define isspace(c) __isctype((c), _ISspace) 229# define isupper(c) __isctype((c), _ISupper) 230# define isxdigit(c) __isctype((c), _ISxdigit) 231# ifdef __USE_ISOC99 232# define isblank(c) __isctype((c), _ISblank) 233# endif 234 235# ifdef __USE_EXTERN_INLINES 236__extern_inline int 237__NTH (tolower (int __c)) 238{ 239 return __UCLIBC_CTYPE_IN_TO_DOMAIN(__c) ? (__UCLIBC_CTYPE_TOLOWER)[__c] : __c; 240} 241__extern_inline int 242__NTH (toupper (int __c)) 243{ 244 return __UCLIBC_CTYPE_IN_TO_DOMAIN(__c) ? (__UCLIBC_CTYPE_TOUPPER)[__c] : __c; 245} 246# endif 247 248# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus 249# define tolower(c) __tobody(c, tolower, __UCLIBC_CTYPE_TOLOWER, (c)) 250# define toupper(c) __tobody(c, toupper, __UCLIBC_CTYPE_TOUPPER, (c)) 251# endif /* Optimizing gcc */ 252 253# if (defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN) \ 254 && defined __UCLIBC_SUSV4_LEGACY__ 255# define isascii(c) __isascii (c) 256# define toascii(c) __toascii (c) 257# define _tolower(c) ((int) (__UCLIBC_CTYPE_TOLOWER)[(int) (c)]) 258# define _toupper(c) ((int) (__UCLIBC_CTYPE_TOUPPER)[(int) (c)]) 259# endif 260 261#endif /* not __cplusplus */ 262 263 264#if defined __USE_GNU && defined __UCLIBC_HAS_XLOCALE__ 265/* The concept of one static locale per category is not very well 266 thought out. Many applications will need to process its data using 267 information from several different locales. Another application is 268 the implementation of the internationalization handling in the 269 upcoming ISO C++ standard library. To support this another set of 270 the functions using locale data exist which have an additional 271 argument. 272 273 Attention: all these functions are *not* standardized in any form. 274 This is a proof-of-concept implementation. */ 275 276/* Structure for reentrant locale using functions. This is an 277 (almost) opaque type for the user level programs. */ 278# include <xlocale.h> 279 280/* These definitions are similar to the ones above but all functions 281 take as an argument a handle for the locale which shall be used. */ 282extern int isalnum_l(int, __locale_t) __THROW; 283extern int isalpha_l(int, __locale_t) __THROW; 284extern int iscntrl_l(int, __locale_t) __THROW; 285extern int isdigit_l(int, __locale_t) __THROW; 286extern int islower_l(int, __locale_t) __THROW; 287extern int isgraph_l(int, __locale_t) __THROW; 288extern int isprint_l(int, __locale_t) __THROW; 289extern int ispunct_l(int, __locale_t) __THROW; 290extern int isspace_l(int, __locale_t) __THROW; 291extern int isupper_l(int, __locale_t) __THROW; 292extern int isxdigit_l(int, __locale_t) __THROW; 293extern int isblank_l(int, __locale_t) __THROW; 294 295# if (defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN) \ 296 && defined __UCLIBC_SUSV4_LEGACY__ 297/* Return nonzero iff C is in the ASCII set 298 (i.e., is no more than 7 bits wide). */ 299extern int isascii_l (int __c) __THROW; 300 301# endif 302 303/* Return the lowercase version of C in locale L. */ 304extern int tolower_l (int __c, __locale_t __l) __THROW; 305 306/* Return the uppercase version of C. */ 307extern int toupper_l (int __c, __locale_t __l) __THROW; 308 309# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus 310# define tolower_l(c, locale) __tobody(c, tolower_l, (locale)->__ctype_tolower, (c, locale)) 311# define toupper_l(c, locale) __tobody(c, toupper_l, (locale)->__ctype_toupper, (c, locale)) 312# endif /* Optimizing gcc */ 313 314 315# define __isctype_l(c, type, locale) ((locale)->__ctype_b[(int) (c)] & (__ctype_mask_t) type) 316# define __isalnum_l(c,l) __isctype_l((c), _ISalnum, (l)) 317# define __isalpha_l(c,l) __isctype_l((c), _ISalpha, (l)) 318# define __iscntrl_l(c,l) __isctype_l((c), _IScntrl, (l)) 319# define __isdigit_l(c,l) __isctype_l((c), _ISdigit, (l)) 320# define __islower_l(c,l) __isctype_l((c), _ISlower, (l)) 321# define __isgraph_l(c,l) __isctype_l((c), _ISgraph, (l)) 322# define __isprint_l(c,l) __isctype_l((c), _ISprint, (l)) 323# define __ispunct_l(c,l) __isctype_l((c), _ISpunct, (l)) 324# define __isspace_l(c,l) __isctype_l((c), _ISspace, (l)) 325# define __isupper_l(c,l) __isctype_l((c), _ISupper, (l)) 326# define __isxdigit_l(c,l) __isctype_l((c), _ISxdigit, (l)) 327# define __isblank_l(c,l) __isctype_l((c), _ISblank, (l)) 328 329# if (defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN) \ 330 && defined __UCLIBC_SUSV4_LEGACY__ 331# define __isascii_l(c,l) ((l), __isascii (c)) 332# define __toascii_l(c,l) ((l), __toascii (c)) 333# endif 334 335# define isalnum_l(c,l) __isalnum_l ((c), (l)) 336# define isalpha_l(c,l) __isalpha_l ((c), (l)) 337# define iscntrl_l(c,l) __iscntrl_l ((c), (l)) 338# define isdigit_l(c,l) __isdigit_l ((c), (l)) 339# define islower_l(c,l) __islower_l ((c), (l)) 340# define isgraph_l(c,l) __isgraph_l ((c), (l)) 341# define isprint_l(c,l) __isprint_l ((c), (l)) 342# define ispunct_l(c,l) __ispunct_l ((c), (l)) 343# define isspace_l(c,l) __isspace_l ((c), (l)) 344# define isupper_l(c,l) __isupper_l ((c), (l)) 345# define isxdigit_l(c,l) __isxdigit_l ((c), (l)) 346# define isblank_l(c,l) __isblank_l ((c), (l)) 347 348# if (defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN) \ 349 && defined __UCLIBC_SUSV4_LEGACY__ 350# define isascii_l(c,l) __isascii_l ((c), (l)) 351# define toascii_l(c,l) __toascii_l ((c), (l)) 352# endif 353 354 355#endif /* Use GNU. */ 356 357__END_DECLS 358 359#endif /* __UCLIBC_HAS_CTYPE_TABLES__ */ 360 361/* We define {__,}isascii for internal use only */ 362 363#endif /* ctype.h */ 364