1/* A substitute for ISO C99 <wctype.h>, for platforms that lack it. 2 3 Copyright (C) 2006, 2007 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2, or (at your option) 8 any later version. 9 10 This program 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 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software Foundation, 17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 18 19/* Written by Bruno Haible and Paul Eggert. */ 20 21/* 22 * ISO C 99 <wctype.h> for platforms that lack it. 23 * <http://www.opengroup.org/susv3xbd/wctype.h.html> 24 * 25 * iswctype, towctrans, towlower, towupper, wctrans, wctype, 26 * wctrans_t, and wctype_t are not yet implemented. 27 */ 28 29#ifndef _GL_WCTYPE_H 30 31#if @HAVE_WINT_T@ 32/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. 33 Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before 34 <wchar.h>. 35 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be 36 included before <wchar.h>. */ 37# include <stddef.h> 38# include <stdio.h> 39# include <time.h> 40# include <wchar.h> 41#endif 42 43/* Include the original <wctype.h> if it exists. 44 BeOS 5 has the functions but no <wctype.h>. */ 45/* The include_next requires a split double-inclusion guard. */ 46#if @HAVE_WCTYPE_H@ 47# @INCLUDE_NEXT@ @NEXT_WCTYPE_H@ 48#endif 49 50#ifndef _GL_WCTYPE_H 51#define _GL_WCTYPE_H 52 53#if @HAVE_WINT_T@ 54typedef wint_t __wctype_wint_t; 55#else 56typedef int __wctype_wint_t; 57#endif 58 59/* FreeBSD 4.4 to 4.11 has <wctype.h> but lacks the functions. 60 Assume all 12 functions are implemented the same way, or not at all. */ 61#if ! @HAVE_ISWCNTRL@ 62 63/* IRIX 5.3 has macros but no functions, its isw* macros refer to an 64 undefined variable _ctmp_ and to <ctype.h> macros like _P, and they 65 refer to system functions like _iswctype that are not in the 66 standard C library. Rather than try to get ancient buggy 67 implementations like this to work, just disable them. */ 68# undef iswalnum 69# undef iswalpha 70# undef iswblank 71# undef iswcntrl 72# undef iswdigit 73# undef iswgraph 74# undef iswlower 75# undef iswprint 76# undef iswpunct 77# undef iswspace 78# undef iswupper 79# undef iswxdigit 80 81static inline int 82iswalnum (__wctype_wint_t wc) 83{ 84 return ((wc >= '0' && wc <= '9') 85 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z')); 86} 87 88static inline int 89iswalpha (__wctype_wint_t wc) 90{ 91 return (wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'; 92} 93 94static inline int 95iswblank (__wctype_wint_t wc) 96{ 97 return wc == ' ' || wc == '\t'; 98} 99 100static inline int 101iswcntrl (__wctype_wint_t wc) 102{ 103 return (wc & ~0x1f) == 0 || wc == 0x7f; 104} 105 106static inline int 107iswdigit (__wctype_wint_t wc) 108{ 109 return wc >= '0' && wc <= '9'; 110} 111 112static inline int 113iswgraph (__wctype_wint_t wc) 114{ 115 return wc >= '!' && wc <= '~'; 116} 117 118static inline int 119iswlower (__wctype_wint_t wc) 120{ 121 return wc >= 'a' && wc <= 'z'; 122} 123 124static inline int 125iswprint (__wctype_wint_t wc) 126{ 127 return wc >= ' ' && wc <= '~'; 128} 129 130static inline int 131iswpunct (__wctype_wint_t wc) 132{ 133 return (wc >= '!' && wc <= '~' 134 && !((wc >= '0' && wc <= '9') 135 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'))); 136} 137 138static inline int 139iswspace (__wctype_wint_t wc) 140{ 141 return (wc == ' ' || wc == '\t' 142 || wc == '\n' || wc == '\v' || wc == '\f' || wc == '\r'); 143} 144 145static inline int 146iswupper (__wctype_wint_t wc) 147{ 148 return wc >= 'A' && wc <= 'Z'; 149} 150 151static inline int 152iswxdigit (__wctype_wint_t wc) 153{ 154 return ((wc >= '0' && wc <= '9') 155 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F')); 156} 157 158# endif /* ! HAVE_ISWCNTRL */ 159 160#endif /* _GL_WCTYPE_H */ 161#endif /* _GL_WCTYPE_H */ 162