include/ctype.h

   1 /*
   2  * Copyright (c) 1989 The Regents of the University of California.
   3  * All rights reserved.
   4  * (c) UNIX System Laboratories, Inc.
   5  * All or some portions of this file are derived from material licensed
   6  * to the University of California by American Telephone and Telegraph
   7  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
   8  * the permission of UNIX System Laboratories, Inc.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)ctype.h     5.3 (Berkeley) 4/3/91
  35  *      $NetBSD: src/include/ctype.h,v 1.25 2003/10/22 15:51:18 kleink Exp $
  36  *      $DragonFly: src/include/ctype.h,v 1.17 2006/03/06 02:54:12 swildner Exp $
  37  */
  38
  39 #ifndef _CTYPE_H_
  40 #define _CTYPE_H_
  41
  42 #include <sys/cdefs.h>
  43 #include <machine/stdint.h>
  44
  45 #define _CTYPEMASK_U    0x0001
  46 #define _CTYPEMASK_L    0x0002
  47 #define _CTYPEMASK_D    0x0004
  48 #define _CTYPEMASK_S    0x0008
  49 #define _CTYPEMASK_P    0x0010
  50 #define _CTYPEMASK_C    0x0020
  51 #define _CTYPEMASK_X    0x0040
  52 #define _CTYPEMASK_B    0x0080
  53 #define _CTYPEMASK_A    0x0100
  54 #define _CTYPEMASK_G    0x0200
  55 #define _CTYPEMASK_R    0x0400
  56
  57 extern const __uint16_t *__libc_ctype_;
  58 extern const __int16_t  *__libc_tolower_tab_;
  59 extern const __int16_t  *__libc_toupper_tab_;
  60
  61 __BEGIN_DECLS
  62 int     isalnum(int);
  63 int     isalpha(int);
  64 int     iscntrl(int);
  65 int     isdigit(int);
  66 int     isgraph(int);
  67 int     islower(int);
  68 int     isprint(int);
  69 int     ispunct(int);
  70 int     isspace(int);
  71 int     isupper(int);
  72 int     isxdigit(int);
  73 int     tolower(int);
  74 int     toupper(int);
  75
  76 #if defined(__XSI_VISIBLE)
  77 int     isascii(int);
  78 int     toascii(int);
  79 int     _tolower(int);
  80 int     _toupper(int);
  81 #endif
  82
  83 #if __ISO_C_VISIBLE >= 1999 || __POSIX_VISIBLE >= 200112L || \
  84     __XSI_VISIBLE >= 600
  85 int     isblank(int);
  86 #endif
  87 __END_DECLS
  88
  89 #ifdef _CTYPE_PRIVATE
  90 extern const __uint16_t __libc_C_ctype_[];
  91 extern const __int16_t  __libc_C_toupper_[];
  92 extern const __int16_t  __libc_C_tolower_[];
  93 #endif
  94
  95 /*
  96  * don't get all wishy washy and try to support architectures where
  97  * char isn't 8 bits.   It's 8 bits, period.
  98  */
  99 #if !defined(_CTYPE_H_DISABLE_MACROS_)
 100
 101 #define _CTYPE_NUM_CHARS        (1 << (8*sizeof(char)))
 102
 103 static __inline int
 104 __libc_ctype_index(__uint16_t mask, int c)
 105 {
 106         if (c < -1 || c >= _CTYPE_NUM_CHARS)
 107                 return(0);      /* XXX maybe assert instead? */
 108         return(__libc_ctype_[c + 1] & mask);
 109 }
 110
 111 static __inline int
 112 __libc_ctype_convert(const __int16_t *array, int c)
 113 {
 114         if (c < -1 || c >= _CTYPE_NUM_CHARS)
 115                 return(c);      /* XXX maybe assert instead? */
 116         return(array[c + 1]);
 117 }
 118
 119 #ifndef _CTYPE_PRIVATE
 120 #undef _CTYPE_NUM_CHARS
 121 #endif
 122
 123 #define isdigit(c)      __libc_ctype_index(_CTYPEMASK_D, c)
 124 #define islower(c)      __libc_ctype_index(_CTYPEMASK_L, c)
 125 #define isspace(c)      __libc_ctype_index(_CTYPEMASK_S, c)
 126 #define ispunct(c)      __libc_ctype_index(_CTYPEMASK_P, c)
 127 #define isupper(c)      __libc_ctype_index(_CTYPEMASK_U, c)
 128 #define isalpha(c)      __libc_ctype_index(_CTYPEMASK_A, c)
 129 #define isxdigit(c)     __libc_ctype_index(_CTYPEMASK_X, c)
 130 #define isalnum(c)      __libc_ctype_index(_CTYPEMASK_A|_CTYPEMASK_D, c)
 131 #define isprint(c)      __libc_ctype_index(_CTYPEMASK_R, c)
 132 #define isgraph(c)      __libc_ctype_index(_CTYPEMASK_G, c)
 133 #define iscntrl(c)      __libc_ctype_index(_CTYPEMASK_C, c)
 134 #define tolower(c)      __libc_ctype_convert(__libc_tolower_tab_, c)
 135 #define toupper(c)      __libc_ctype_convert(__libc_toupper_tab_, c)
 136
 137 #if defined(__XSI_VISIBLE)
 138 #define isascii(c)      ((unsigned)(c) <= 0177)
 139 #define toascii(c)      ((c) & 0177)
 140 #define _tolower(c)     ((c) - 'A' + 'a')
 141 #define _toupper(c)     ((c) - 'a' + 'A')
 142 #endif
 143
 144 #if __ISO_C_VISIBLE >= 1999 || __POSIX_VISIBLE >= 200112L || \
 145     __XSI_VISIBLE >= 600
 146 #define isblank(c)      __libc_ctype_index(_CTYPEMASK_B, c)
 147 #endif
 148
 149 #endif /* !_CTYPE_H_DISABLE_MACROS_ */
 150
 151 #endif /* !_CTYPE_H_ */