Annotation of src/external/gpl3/binutils.old/dist/include/safe-ctype.h, Revision 1.1.1.5
1.1 christos 1: /* <ctype.h> replacement macros.
2:
1.1.1.5 ! christos 3: Copyright (C) 2000-2020 Free Software Foundation, Inc.
1.1 christos 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., 51 Franklin Street - Fifth Floor,
20: Boston, 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: /* Determine host character set. */
39: #define HOST_CHARSET_UNKNOWN 0
40: #define HOST_CHARSET_ASCII 1
41: #define HOST_CHARSET_EBCDIC 2
42:
43: #if '\n' == 0x0A && ' ' == 0x20 && '0' == 0x30 \
44: && 'A' == 0x41 && 'a' == 0x61 && '!' == 0x21
45: # define HOST_CHARSET HOST_CHARSET_ASCII
46: #else
47: # if '\n' == 0x15 && ' ' == 0x40 && '0' == 0xF0 \
48: && 'A' == 0xC1 && 'a' == 0x81 && '!' == 0x5A
49: # define HOST_CHARSET HOST_CHARSET_EBCDIC
50: # else
51: # define HOST_CHARSET HOST_CHARSET_UNKNOWN
52: # endif
53: #endif
54:
55: /* Categories. */
56:
57: enum {
58: /* In C99 */
59: _sch_isblank = 0x0001, /* space \t */
60: _sch_iscntrl = 0x0002, /* nonprinting characters */
61: _sch_isdigit = 0x0004, /* 0-9 */
62: _sch_islower = 0x0008, /* a-z */
63: _sch_isprint = 0x0010, /* any printing character including ' ' */
64: _sch_ispunct = 0x0020, /* all punctuation */
65: _sch_isspace = 0x0040, /* space \t \n \r \f \v */
66: _sch_isupper = 0x0080, /* A-Z */
67: _sch_isxdigit = 0x0100, /* 0-9A-Fa-f */
68:
69: /* Extra categories useful to cpplib. */
70: _sch_isidst = 0x0200, /* A-Za-z_ */
71: _sch_isvsp = 0x0400, /* \n \r */
72: _sch_isnvsp = 0x0800, /* space \t \f \v \0 */
73:
74: /* Combinations of the above. */
75: _sch_isalpha = _sch_isupper|_sch_islower, /* A-Za-z */
76: _sch_isalnum = _sch_isalpha|_sch_isdigit, /* A-Za-z0-9 */
77: _sch_isidnum = _sch_isidst|_sch_isdigit, /* A-Za-z0-9_ */
78: _sch_isgraph = _sch_isalnum|_sch_ispunct, /* isprint and not space */
79: _sch_iscppsp = _sch_isvsp|_sch_isnvsp, /* isspace + \0 */
80: _sch_isbasic = _sch_isprint|_sch_iscppsp /* basic charset of ISO C
81: (plus ` and @) */
82: };
83:
84: /* Character classification. */
85: extern const unsigned short _sch_istable[256];
86:
87: #define _sch_test(c, bit) (_sch_istable[(c) & 0xff] & (unsigned short)(bit))
88:
89: #define ISALPHA(c) _sch_test(c, _sch_isalpha)
90: #define ISALNUM(c) _sch_test(c, _sch_isalnum)
91: #define ISBLANK(c) _sch_test(c, _sch_isblank)
92: #define ISCNTRL(c) _sch_test(c, _sch_iscntrl)
93: #define ISDIGIT(c) _sch_test(c, _sch_isdigit)
94: #define ISGRAPH(c) _sch_test(c, _sch_isgraph)
95: #define ISLOWER(c) _sch_test(c, _sch_islower)
96: #define ISPRINT(c) _sch_test(c, _sch_isprint)
97: #define ISPUNCT(c) _sch_test(c, _sch_ispunct)
98: #define ISSPACE(c) _sch_test(c, _sch_isspace)
99: #define ISUPPER(c) _sch_test(c, _sch_isupper)
100: #define ISXDIGIT(c) _sch_test(c, _sch_isxdigit)
101:
102: #define ISIDNUM(c) _sch_test(c, _sch_isidnum)
103: #define ISIDST(c) _sch_test(c, _sch_isidst)
104: #define IS_ISOBASIC(c) _sch_test(c, _sch_isbasic)
105: #define IS_VSPACE(c) _sch_test(c, _sch_isvsp)
106: #define IS_NVSPACE(c) _sch_test(c, _sch_isnvsp)
107: #define IS_SPACE_OR_NUL(c) _sch_test(c, _sch_iscppsp)
108:
109: /* Character transformation. */
110: extern const unsigned char _sch_toupper[256];
111: extern const unsigned char _sch_tolower[256];
112: #define TOUPPER(c) _sch_toupper[(c) & 0xff]
113: #define TOLOWER(c) _sch_tolower[(c) & 0xff]
114:
115: /* Prevent the users of safe-ctype.h from accidently using the routines
116: from ctype.h. Initially, the approach was to produce an error when
117: detecting that ctype.h has been included. But this was causing
118: trouble as ctype.h might get indirectly included as a result of
119: including another system header (for instance gnulib's stdint.h).
120: So we include ctype.h here and then immediately redefine its macros. */
121:
122: #include <ctype.h>
123: #undef isalpha
124: #define isalpha(c) do_not_use_isalpha_with_safe_ctype
125: #undef isalnum
126: #define isalnum(c) do_not_use_isalnum_with_safe_ctype
127: #undef iscntrl
128: #define iscntrl(c) do_not_use_iscntrl_with_safe_ctype
129: #undef isdigit
130: #define isdigit(c) do_not_use_isdigit_with_safe_ctype
131: #undef isgraph
132: #define isgraph(c) do_not_use_isgraph_with_safe_ctype
133: #undef islower
134: #define islower(c) do_not_use_islower_with_safe_ctype
135: #undef isprint
136: #define isprint(c) do_not_use_isprint_with_safe_ctype
137: #undef ispunct
138: #define ispunct(c) do_not_use_ispunct_with_safe_ctype
139: #undef isspace
140: #define isspace(c) do_not_use_isspace_with_safe_ctype
141: #undef isupper
142: #define isupper(c) do_not_use_isupper_with_safe_ctype
143: #undef isxdigit
144: #define isxdigit(c) do_not_use_isxdigit_with_safe_ctype
145: #undef toupper
146: #define toupper(c) do_not_use_toupper_with_safe_ctype
147: #undef tolower
148: #define tolower(c) do_not_use_tolower_with_safe_ctype
149:
150: #endif /* SAFE_CTYPE_H */
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