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 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. */
38 /* Catch erroneous use of ctype macros. Files that really know what
39 they're doing can disable this check by defining the
40 I_REALLY_WANT_CTYPE_MACROS preprocessor constant. */
42 #ifndef I_REALLY_WANT_CTYPE_MACROS
45 #define isalpha *** Please use ISALPHA ***
47 #define isalnum *** Please use ISALNUM ***
49 #define isblank *** Please use ISBLANK ***
51 #define iscntrl *** Please use ISCNTRL ***
53 #define isdigit *** Please use ISDIGIT ***
55 #define isgraph *** Please use ISGRAPH ***
57 #define islower *** Please use ISLOWER ***
59 #define isprint *** Please use ISPRINT ***
61 #define ispunct *** Please use ISPUNCT ***
63 #define isspace *** Please use ISSPACE ***
65 #define isupper *** Please use ISUPPER ***
67 #define isxdigit *** Please use ISXDIGIT ***
69 #endif /* I_REALLY_WANT_CTYPE_MACROS */
75 _sch_isblank = 0x0001, /* space \t */
76 _sch_iscntrl = 0x0002, /* nonprinting characters */
77 _sch_isdigit = 0x0004, /* 0-9 */
78 _sch_islower = 0x0008, /* a-z */
79 _sch_isprint = 0x0010, /* any printing character including ' ' */
80 _sch_ispunct = 0x0020, /* all punctuation */
81 _sch_isspace = 0x0040, /* space \t \n \r \f \v */
82 _sch_isupper = 0x0080, /* A-Z */
83 _sch_isxdigit = 0x0100, /* 0-9A-Fa-f */
85 /* Extra categories useful to cpplib. */
86 _sch_isidst = 0x0200, /* A-Za-z_ */
87 _sch_isvsp = 0x0400, /* \n \r */
88 _sch_isnvsp = 0x0800, /* space \t \f \v \0 */
90 /* Combinations of the above. */
91 _sch_isalpha = _sch_isupper|_sch_islower, /* A-Za-z */
92 _sch_isalnum = _sch_isalpha|_sch_isdigit, /* A-Za-z0-9 */
93 _sch_isidnum = _sch_isidst|_sch_isdigit, /* A-Za-z0-9_ */
94 _sch_isgraph = _sch_isalnum|_sch_ispunct, /* isprint and not space */
95 _sch_iscppsp = _sch_isvsp|_sch_isnvsp /* isspace + \0 */
98 /* Character classification. */
99 extern const unsigned short _sch_istable[256];
101 #define _sch_test(c, bit) (_sch_istable[(c) & 0xff] & (bit))
103 #define ISALPHA(c) _sch_test(c, _sch_isalpha)
104 #define ISALNUM(c) _sch_test(c, _sch_isalnum)
105 #define ISBLANK(c) _sch_test(c, _sch_isblank)
106 #define ISCNTRL(c) _sch_test(c, _sch_iscntrl)
107 #define ISDIGIT(c) _sch_test(c, _sch_isdigit)
108 #define ISGRAPH(c) _sch_test(c, _sch_isgraph)
109 #define ISLOWER(c) _sch_test(c, _sch_islower)
110 #define ISPRINT(c) _sch_test(c, _sch_isprint)
111 #define ISPUNCT(c) _sch_test(c, _sch_ispunct)
112 #define ISSPACE(c) _sch_test(c, _sch_isspace)
113 #define ISUPPER(c) _sch_test(c, _sch_isupper)
114 #define ISXDIGIT(c) _sch_test(c, _sch_isxdigit)
116 #define ISIDNUM(c) _sch_test(c, _sch_isidnum)
117 #define ISIDST(c) _sch_test(c, _sch_isidst)
118 #define IS_VSPACE(c) _sch_test(c, _sch_isvsp)
119 #define IS_NVSPACE(c) _sch_test(c, _sch_isnvsp)
120 #define IS_SPACE_OR_NUL(c) _sch_test(c, _sch_iscppsp)
122 /* Character transformation. */
123 extern const unsigned char _sch_toupper[256];
124 extern const unsigned char _sch_tolower[256];
125 #define TOUPPER(c) _sch_toupper[(c) & 0xff]
126 #define TOLOWER(c) _sch_tolower[(c) & 0xff]
128 #endif /* SAFE_CTYPE_H */