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f6bbde28 ZW |
1 | /* <ctype.h> replacement macros. |
2 | ||
9bb9ef28 | 3 | Copyright (C) 2000, 2001 Free Software Foundation, Inc. |
f6bbde28 ZW |
4 | Contributed by Zack Weinberg <zackw@stanford.edu>. |
5 | ||
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. | |
11 | ||
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. | |
16 | ||
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. */ | |
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" | |
7468e0b5 ZW |
40 | #endif |
41 | ||
42 | /* Determine host character set. */ | |
21299dbd ZW |
43 | #define HOST_CHARSET_UNKNOWN 0 |
44 | #define HOST_CHARSET_ASCII 1 | |
45 | #define HOST_CHARSET_EBCDIC 2 | |
7468e0b5 ZW |
46 | |
47 | #if '\n' == 0x0A && ' ' == 0x20 && '0' == 0x30 \ | |
48 | && 'A' == 0x41 && 'a' == 0x61 && '!' == 0x21 | |
21299dbd | 49 | # define HOST_CHARSET HOST_CHARSET_ASCII |
f6bbde28 | 50 | #else |
7468e0b5 ZW |
51 | # if '\n' == 0x15 && ' ' == 0x40 && '0' == 0xF0 \ |
52 | && 'A' == 0xC1 && 'a' == 0x81 && '!' == 0x5A | |
21299dbd | 53 | # define HOST_CHARSET HOST_CHARSET_EBCDIC |
7468e0b5 | 54 | # else |
21299dbd | 55 | # define HOST_CHARSET HOST_CHARSET_UNKNOWN |
7468e0b5 ZW |
56 | # endif |
57 | #endif | |
f6bbde28 ZW |
58 | |
59 | /* Categories. */ | |
60 | ||
61 | enum { | |
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 */ | |
5a6943c7 NB |
83 | _sch_iscppsp = _sch_isvsp|_sch_isnvsp, /* isspace + \0 */ |
84 | _sch_isbasic = _sch_isprint|_sch_iscppsp /* basic charset of ISO C | |
85 | (plus ` and @) */ | |
f6bbde28 ZW |
86 | }; |
87 | ||
f6bbde28 ZW |
88 | /* Character classification. */ |
89 | extern const unsigned short _sch_istable[256]; | |
90 | ||
9bb9ef28 | 91 | #define _sch_test(c, bit) (_sch_istable[(c) & 0xff] & (unsigned short)(bit)) |
f6bbde28 ZW |
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) | |
5a6943c7 | 108 | #define IS_ISOBASIC(c) _sch_test(c, _sch_isbasic) |
f6bbde28 ZW |
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. */ | |
114 | extern const unsigned char _sch_toupper[256]; | |
115 | extern const unsigned char _sch_tolower[256]; | |
d092a925 HB |
116 | #define TOUPPER(c) _sch_toupper[(c) & 0xff] |
117 | #define TOLOWER(c) _sch_tolower[(c) & 0xff] | |
f6bbde28 | 118 | |
f6bbde28 | 119 | #endif /* SAFE_CTYPE_H */ |