1/* A substitute for ISO C99 <wctype.h>, for platforms that lack it. 2 3 Copyright (C) 2006, 2007, 2008, 2009 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 3, 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 __GNUC__ >= 3 32@PRAGMA_SYSTEM_HEADER@ 33#endif 34 35#if @HAVE_WINT_T@ 36/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. 37 Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before 38 <wchar.h>. 39 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be 40 included before <wchar.h>. */ 41# include <stddef.h> 42# include <stdio.h> 43# include <time.h> 44# include <wchar.h> 45#endif 46 47/* Include the original <wctype.h> if it exists. 48 BeOS 5 has the functions but no <wctype.h>. */ 49/* The include_next requires a split double-inclusion guard. */ 50#if @HAVE_WCTYPE_H@ 51# @INCLUDE_NEXT@ @NEXT_WCTYPE_H@ 52#endif 53 54#ifndef _GL_WCTYPE_H 55#define _GL_WCTYPE_H 56 57/* Define wint_t. (Also done in wchar.in.h.) */ 58#if !@HAVE_WINT_T@ && !defined wint_t 59# define wint_t int 60# ifndef WEOF 61# define WEOF -1 62# endif 63#endif 64 65/* FreeBSD 4.4 to 4.11 has <wctype.h> but lacks the functions. 66 Linux libc5 has <wctype.h> and the functions but they are broken. 67 Assume all 12 functions are implemented the same way, or not at all. */ 68#if ! @HAVE_ISWCNTRL@ || @REPLACE_ISWCNTRL@ 69 70/* IRIX 5.3 has macros but no functions, its isw* macros refer to an 71 undefined variable _ctmp_ and to <ctype.h> macros like _P, and they 72 refer to system functions like _iswctype that are not in the 73 standard C library. Rather than try to get ancient buggy 74 implementations like this to work, just disable them. */ 75# undef iswalnum 76# undef iswalpha 77# undef iswblank 78# undef iswcntrl 79# undef iswdigit 80# undef iswgraph 81# undef iswlower 82# undef iswprint 83# undef iswpunct 84# undef iswspace 85# undef iswupper 86# undef iswxdigit 87 88/* Linux libc5 has <wctype.h> and the functions but they are broken. */ 89# if @REPLACE_ISWCNTRL@ 90# define iswalnum rpl_iswalnum 91# define iswalpha rpl_iswalpha 92# define iswblank rpl_iswblank 93# define iswcntrl rpl_iswcntrl 94# define iswdigit rpl_iswdigit 95# define iswgraph rpl_iswgraph 96# define iswlower rpl_iswlower 97# define iswprint rpl_iswprint 98# define iswpunct rpl_iswpunct 99# define iswspace rpl_iswspace 100# define iswupper rpl_iswupper 101# define iswxdigit rpl_iswxdigit 102# endif 103 104static inline int 105iswalnum (wint_t wc) 106{ 107 return ((wc >= '0' && wc <= '9') 108 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z')); 109} 110 111static inline int 112iswalpha (wint_t wc) 113{ 114 return (wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'; 115} 116 117static inline int 118iswblank (wint_t wc) 119{ 120 return wc == ' ' || wc == '\t'; 121} 122 123static inline int 124iswcntrl (wint_t wc) 125{ 126 return (wc & ~0x1f) == 0 || wc == 0x7f; 127} 128 129static inline int 130iswdigit (wint_t wc) 131{ 132 return wc >= '0' && wc <= '9'; 133} 134 135static inline int 136iswgraph (wint_t wc) 137{ 138 return wc >= '!' && wc <= '~'; 139} 140 141static inline int 142iswlower (wint_t wc) 143{ 144 return wc >= 'a' && wc <= 'z'; 145} 146 147static inline int 148iswprint (wint_t wc) 149{ 150 return wc >= ' ' && wc <= '~'; 151} 152 153static inline int 154iswpunct (wint_t wc) 155{ 156 return (wc >= '!' && wc <= '~' 157 && !((wc >= '0' && wc <= '9') 158 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'))); 159} 160 161static inline int 162iswspace (wint_t wc) 163{ 164 return (wc == ' ' || wc == '\t' 165 || wc == '\n' || wc == '\v' || wc == '\f' || wc == '\r'); 166} 167 168static inline int 169iswupper (wint_t wc) 170{ 171 return wc >= 'A' && wc <= 'Z'; 172} 173 174static inline int 175iswxdigit (wint_t wc) 176{ 177 return ((wc >= '0' && wc <= '9') 178 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F')); 179} 180 181# endif /* ! HAVE_ISWCNTRL */ 182 183#endif /* _GL_WCTYPE_H */ 184#endif /* _GL_WCTYPE_H */ 185