1/* <ctype.h> replacement macros. 2 3 Copyright (C) 2000, 2001 Free Software Foundation, Inc. 4 Contributed by Zack Weinberg <zackw@stanford.edu>. 5 6This file is part of the libiberty library. 7Libiberty is free software; you can redistribute it and/or 8modify it under the terms of the GNU Library General Public 9License as published by the Free Software Foundation; either 10version 2 of the License, or (at your option) any later version. 11 12Libiberty is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15Library General Public License for more details. 16 17You should have received a copy of the GNU Library General Public 18License along with libiberty; see the file COPYING.LIB. If 19not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, 20Boston, MA 02110-1301, USA. */ 21 22/* This is a compatible replacement of the standard C library's <ctype.h> 23 with the following properties: 24 25 - Implements all isxxx() macros required by C99. 26 - Also implements some character classes useful when 27 parsing C-like languages. 28 - Does not change behavior depending on the current locale. 29 - Behaves properly for all values in the range of a signed or 30 unsigned char. 31 32 To avoid conflicts, this header defines the isxxx functions in upper 33 case, e.g. ISALPHA not isalpha. */ 34 35#ifndef SAFE_CTYPE_H 36#define SAFE_CTYPE_H 37 38#ifdef isalpha 39 #error "safe-ctype.h and ctype.h may not be used simultaneously" 40#endif 41 42/* Determine host character set. */ 43#define HOST_CHARSET_UNKNOWN 0 44#define HOST_CHARSET_ASCII 1 45#define HOST_CHARSET_EBCDIC 2 46 47#if '\n' == 0x0A && ' ' == 0x20 && '0' == 0x30 \ 48 && 'A' == 0x41 && 'a' == 0x61 && '!' == 0x21 49# define HOST_CHARSET HOST_CHARSET_ASCII 50#else 51# if '\n' == 0x15 && ' ' == 0x40 && '0' == 0xF0 \ 52 && 'A' == 0xC1 && 'a' == 0x81 && '!' == 0x5A 53# define HOST_CHARSET HOST_CHARSET_EBCDIC 54# else 55# define HOST_CHARSET HOST_CHARSET_UNKNOWN 56# endif 57#endif 58 59/* Categories. */ 60 61enum { 62 /* In C99 */ 63 _sch_isblank = 0x0001, /* space \t */ 64 _sch_iscntrl = 0x0002, /* nonprinting characters */ 65 _sch_isdigit = 0x0004, /* 0-9 */ 66 _sch_islower = 0x0008, /* a-z */ 67 _sch_isprint = 0x0010, /* any printing character including ' ' */ 68 _sch_ispunct = 0x0020, /* all punctuation */ 69 _sch_isspace = 0x0040, /* space \t \n \r \f \v */ 70 _sch_isupper = 0x0080, /* A-Z */ 71 _sch_isxdigit = 0x0100, /* 0-9A-Fa-f */ 72 73 /* Extra categories useful to cpplib. */ 74 _sch_isidst = 0x0200, /* A-Za-z_ */ 75 _sch_isvsp = 0x0400, /* \n \r */ 76 _sch_isnvsp = 0x0800, /* space \t \f \v \0 */ 77 78 /* Combinations of the above. */ 79 _sch_isalpha = _sch_isupper|_sch_islower, /* A-Za-z */ 80 _sch_isalnum = _sch_isalpha|_sch_isdigit, /* A-Za-z0-9 */ 81 _sch_isidnum = _sch_isidst|_sch_isdigit, /* A-Za-z0-9_ */ 82 _sch_isgraph = _sch_isalnum|_sch_ispunct, /* isprint and not space */ 83 _sch_iscppsp = _sch_isvsp|_sch_isnvsp, /* isspace + \0 */ 84 _sch_isbasic = _sch_isprint|_sch_iscppsp /* basic charset of ISO C 85 (plus ` and @) */ 86}; 87 88/* Character classification. */ 89extern const unsigned short _sch_istable[256]; 90 91#define _sch_test(c, bit) (_sch_istable[(c) & 0xff] & (unsigned short)(bit)) 92 93#define ISALPHA(c) _sch_test(c, _sch_isalpha) 94#define ISALNUM(c) _sch_test(c, _sch_isalnum) 95#define ISBLANK(c) _sch_test(c, _sch_isblank) 96#define ISCNTRL(c) _sch_test(c, _sch_iscntrl) 97#define ISDIGIT(c) _sch_test(c, _sch_isdigit) 98#define ISGRAPH(c) _sch_test(c, _sch_isgraph) 99#define ISLOWER(c) _sch_test(c, _sch_islower) 100#define ISPRINT(c) _sch_test(c, _sch_isprint) 101#define ISPUNCT(c) _sch_test(c, _sch_ispunct) 102#define ISSPACE(c) _sch_test(c, _sch_isspace) 103#define ISUPPER(c) _sch_test(c, _sch_isupper) 104#define ISXDIGIT(c) _sch_test(c, _sch_isxdigit) 105 106#define ISIDNUM(c) _sch_test(c, _sch_isidnum) 107#define ISIDST(c) _sch_test(c, _sch_isidst) 108#define IS_ISOBASIC(c) _sch_test(c, _sch_isbasic) 109#define IS_VSPACE(c) _sch_test(c, _sch_isvsp) 110#define IS_NVSPACE(c) _sch_test(c, _sch_isnvsp) 111#define IS_SPACE_OR_NUL(c) _sch_test(c, _sch_iscppsp) 112 113/* Character transformation. */ 114extern const unsigned char _sch_toupper[256]; 115extern const unsigned char _sch_tolower[256]; 116#define TOUPPER(c) _sch_toupper[(c) & 0xff] 117#define TOLOWER(c) _sch_tolower[(c) & 0xff] 118 119#endif /* SAFE_CTYPE_H */ 120