1 /* <ctype.h> replacement macros.
3 Copyright (C) 2000, 2001 Free Software Foundation, Inc.
4 Contributed by Zack Weinberg <zackw@stanford.edu>.
6 This file is part of the libiberty library.
7 Libiberty is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public
9 License as published by the Free Software Foundation; either
10 version 2 of the License, or (at your option) any later version.
12 Libiberty is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
17 You should have received a copy of the GNU Library General Public
18 License along with libiberty; see the file COPYING.LIB. If
19 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* This is a compatible replacement of the standard C library's <ctype.h>
23 with the following properties:
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
32 To avoid conflicts, this header defines the isxxx functions in upper
33 case, e.g. ISALPHA not isalpha. */
39 #error "safe-ctype.h and ctype.h may not be used simultaneously"
42 /* Determine host character set. */
43 #define HOST_CHARSET_UNKNOWN 0
44 #define HOST_CHARSET_ASCII 1
45 #define HOST_CHARSET_EBCDIC 2
47 #if '\n' == 0x0A && ' ' == 0x20 && '0' == 0x30 \
48 && 'A' == 0x41 && 'a' == 0x61 && '!' == 0x21
49 # define HOST_CHARSET HOST_CHARSET_ASCII
51 # if '\n' == 0x15 && ' ' == 0x40 && '0' == 0xF0 \
52 && 'A' == 0xC1 && 'a' == 0x81 && '!' == 0x5A
53 # define HOST_CHARSET HOST_CHARSET_EBCDIC
55 # define HOST_CHARSET HOST_CHARSET_UNKNOWN
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 */
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 */
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
88 /* Character classification. */
89 extern const unsigned short _sch_istable
[256];
91 #define _sch_test(c, bit) (_sch_istable[(c) & 0xff] & (unsigned short)(bit))
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)
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)
113 /* Character transformation. */
114 extern const unsigned char _sch_toupper
[256];
115 extern const unsigned char _sch_tolower
[256];
116 #define TOUPPER(c) _sch_toupper[(c) & 0xff]
117 #define TOLOWER(c) _sch_tolower[(c) & 0xff]
119 #endif /* SAFE_CTYPE_H */
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