1 /* <ctype.h> replacement macros.
3 Copyright (C) 2000 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 3 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. If not, see
19 <http://www.gnu.org/licenses/>.
21 In addition, as a special exception, the Free Software Foundation
22 gives permission to link the code of its release of Wget with the
23 OpenSSL project's "OpenSSL" library (or with modified versions of it
24 that use the same license as the "OpenSSL" library), and distribute
25 the linked executables. You must obey the GNU General Public License
26 in all respects for all of the code used other than "OpenSSL". If you
27 modify this file, you may extend this exception to your version of the
28 file, but you are not obligated to do so. If you do not wish to do
29 so, delete this exception statement from your version. */
31 /* This is a compatible replacement of the standard C library's <ctype.h>
32 with the following properties:
34 - Implements all isxxx() macros required by C99.
35 - Also implements some character classes useful when
36 parsing C-like languages.
37 - Does not change behavior depending on the current locale.
38 - Behaves properly for all values in the range of a signed or
41 To avoid conflicts, this header defines the isxxx functions in upper
42 case, e.g. ISALPHA not isalpha. */
47 /* Catch erroneous use of ctype macros. Files that really know what
48 they're doing can disable this check by defining the
49 I_REALLY_WANT_CTYPE_MACROS preprocessor constant. */
51 #ifndef I_REALLY_WANT_CTYPE_MACROS
53 /* We used to #define these to errors, but that loses when real
54 ctype.h is included, usually by a library's (OpenSSL's) header
55 which gets #included after wget.h. */
70 #endif /* I_REALLY_WANT_CTYPE_MACROS */
76 _sch_isblank = 0x0001, /* space \t */
77 _sch_iscntrl = 0x0002, /* nonprinting characters */
78 _sch_isdigit = 0x0004, /* 0-9 */
79 _sch_islower = 0x0008, /* a-z */
80 _sch_isprint = 0x0010, /* any printing character including ' ' */
81 _sch_ispunct = 0x0020, /* all punctuation */
82 _sch_isspace = 0x0040, /* space \t \n \r \f \v */
83 _sch_isupper = 0x0080, /* A-Z */
84 _sch_isxdigit = 0x0100, /* 0-9A-Fa-f */
86 /* Extra categories useful to cpplib. */
87 _sch_isidst = 0x0200, /* A-Za-z_ */
88 _sch_isvsp = 0x0400, /* \n \r */
89 _sch_isnvsp = 0x0800, /* space \t \f \v \0 */
91 /* Combinations of the above. */
92 _sch_isalpha = _sch_isupper|_sch_islower, /* A-Za-z */
93 _sch_isalnum = _sch_isalpha|_sch_isdigit, /* A-Za-z0-9 */
94 _sch_isidnum = _sch_isidst|_sch_isdigit, /* A-Za-z0-9_ */
95 _sch_isgraph = _sch_isalnum|_sch_ispunct, /* isprint and not space */
96 _sch_iscppsp = _sch_isvsp|_sch_isnvsp /* isspace + \0 */
99 /* Character classification. */
100 extern const unsigned short _sch_istable[256];
102 #define _sch_test(c, bit) (_sch_istable[(c) & 0xff] & (unsigned short)(bit))
104 #define ISALPHA(c) _sch_test(c, _sch_isalpha)
105 #define ISALNUM(c) _sch_test(c, _sch_isalnum)
106 #define ISBLANK(c) _sch_test(c, _sch_isblank)
107 #define ISCNTRL(c) _sch_test(c, _sch_iscntrl)
108 #define ISDIGIT(c) _sch_test(c, _sch_isdigit)
109 #define ISGRAPH(c) _sch_test(c, _sch_isgraph)
110 #define ISLOWER(c) _sch_test(c, _sch_islower)
111 #define ISPRINT(c) _sch_test(c, _sch_isprint)
112 #define ISPUNCT(c) _sch_test(c, _sch_ispunct)
113 #define ISSPACE(c) _sch_test(c, _sch_isspace)
114 #define ISUPPER(c) _sch_test(c, _sch_isupper)
115 #define ISXDIGIT(c) _sch_test(c, _sch_isxdigit)
117 #define ISIDNUM(c) _sch_test(c, _sch_isidnum)
118 #define ISIDST(c) _sch_test(c, _sch_isidst)
119 #define IS_VSPACE(c) _sch_test(c, _sch_isvsp)
120 #define IS_NVSPACE(c) _sch_test(c, _sch_isnvsp)
121 #define IS_SPACE_OR_NUL(c) _sch_test(c, _sch_iscppsp)
123 /* Character transformation. */
124 extern const unsigned char _sch_toupper[256];
125 extern const unsigned char _sch_tolower[256];
126 #define TOUPPER(c) _sch_toupper[(c) & 0xff]
127 #define TOLOWER(c) _sch_tolower[(c) & 0xff]
129 #endif /* SAFE_CTYPE_H */