Annotation of embedaddon/readline/chardefs.h, revision 1.1.1.1
1.1 misho 1: /* chardefs.h -- Character definitions for readline. */
2:
3: /* Copyright (C) 1994-2009 Free Software Foundation, Inc.
4:
5: This file is part of the GNU Readline Library (Readline), a library
6: for reading lines of text with interactive input and history editing.
7:
8: Readline is free software: you can redistribute it and/or modify
9: it under the terms of the GNU General Public License as published by
10: the Free Software Foundation, either version 3 of the License, or
11: (at your option) any later version.
12:
13: Readline is distributed in the hope that it will be useful,
14: but WITHOUT ANY WARRANTY; without even the implied warranty of
15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: GNU General Public License for more details.
17:
18: You should have received a copy of the GNU General Public License
19: along with Readline. If not, see <http://www.gnu.org/licenses/>.
20: */
21:
22: #ifndef _CHARDEFS_H_
23: #define _CHARDEFS_H_
24:
25: #include <ctype.h>
26:
27: #if defined (HAVE_CONFIG_H)
28: # if defined (HAVE_STRING_H)
29: # if ! defined (STDC_HEADERS) && defined (HAVE_MEMORY_H)
30: # include <memory.h>
31: # endif
32: # include <string.h>
33: # endif /* HAVE_STRING_H */
34: # if defined (HAVE_STRINGS_H)
35: # include <strings.h>
36: # endif /* HAVE_STRINGS_H */
37: #else
38: # include <string.h>
39: #endif /* !HAVE_CONFIG_H */
40:
41: #ifndef whitespace
42: #define whitespace(c) (((c) == ' ') || ((c) == '\t'))
43: #endif
44:
45: #ifdef CTRL
46: # undef CTRL
47: #endif
48: #ifdef UNCTRL
49: # undef UNCTRL
50: #endif
51:
52: /* Some character stuff. */
53: #define control_character_threshold 0x020 /* Smaller than this is control. */
54: #define control_character_mask 0x1f /* 0x20 - 1 */
55: #define meta_character_threshold 0x07f /* Larger than this is Meta. */
56: #define control_character_bit 0x40 /* 0x000000, must be off. */
57: #define meta_character_bit 0x080 /* x0000000, must be on. */
58: #define largest_char 255 /* Largest character value. */
59:
60: #define CTRL_CHAR(c) ((c) < control_character_threshold && (((c) & 0x80) == 0))
61: #define META_CHAR(c) ((c) > meta_character_threshold && (c) <= largest_char)
62:
63: #define CTRL(c) ((c) & control_character_mask)
64: #define META(c) ((c) | meta_character_bit)
65:
66: #define UNMETA(c) ((c) & (~meta_character_bit))
67: #define UNCTRL(c) _rl_to_upper(((c)|control_character_bit))
68:
69: #if defined STDC_HEADERS || (!defined (isascii) && !defined (HAVE_ISASCII))
70: # define IN_CTYPE_DOMAIN(c) 1
71: #else
72: # define IN_CTYPE_DOMAIN(c) isascii(c)
73: #endif
74:
75: #if !defined (isxdigit) && !defined (HAVE_ISXDIGIT) && !defined (__cplusplus)
76: # define isxdigit(c) (isdigit((c)) || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F'))
77: #endif
78:
79: #if defined (CTYPE_NON_ASCII)
80: # define NON_NEGATIVE(c) 1
81: #else
82: # define NON_NEGATIVE(c) ((unsigned char)(c) == (c))
83: #endif
84:
85: /* Some systems define these; we want our definitions. */
86: #undef ISPRINT
87:
88: /* Beware: these only work with single-byte ASCII characters. */
89:
90: #define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c))
91: #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
92: #define ISDIGIT(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
93: #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c))
94: #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
95: #define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
96: #define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
97:
98: #define _rl_lowercase_p(c) (NON_NEGATIVE(c) && ISLOWER(c))
99: #define _rl_uppercase_p(c) (NON_NEGATIVE(c) && ISUPPER(c))
100: #define _rl_digit_p(c) ((c) >= '0' && (c) <= '9')
101:
102: #define _rl_pure_alphabetic(c) (NON_NEGATIVE(c) && ISALPHA(c))
103: #define ALPHABETIC(c) (NON_NEGATIVE(c) && ISALNUM(c))
104:
105: #ifndef _rl_to_upper
106: # define _rl_to_upper(c) (_rl_lowercase_p(c) ? toupper((unsigned char)c) : (c))
107: # define _rl_to_lower(c) (_rl_uppercase_p(c) ? tolower((unsigned char)c) : (c))
108: #endif
109:
110: #ifndef _rl_digit_value
111: # define _rl_digit_value(x) ((x) - '0')
112: #endif
113:
114: #ifndef _rl_isident
115: # define _rl_isident(c) (ISALNUM(c) || (c) == '_')
116: #endif
117:
118: #ifndef ISOCTAL
119: # define ISOCTAL(c) ((c) >= '0' && (c) <= '7')
120: #endif
121: #define OCTVALUE(c) ((c) - '0')
122:
123: #define HEXVALUE(c) \
124: (((c) >= 'a' && (c) <= 'f') \
125: ? (c)-'a'+10 \
126: : (c) >= 'A' && (c) <= 'F' ? (c)-'A'+10 : (c)-'0')
127:
128: #ifndef NEWLINE
129: #define NEWLINE '\n'
130: #endif
131:
132: #ifndef RETURN
133: #define RETURN CTRL('M')
134: #endif
135:
136: #ifndef RUBOUT
137: #define RUBOUT 0x7f
138: #endif
139:
140: #ifndef TAB
141: #define TAB '\t'
142: #endif
143:
144: #ifdef ABORT_CHAR
145: #undef ABORT_CHAR
146: #endif
147: #define ABORT_CHAR CTRL('G')
148:
149: #ifdef PAGE
150: #undef PAGE
151: #endif
152: #define PAGE CTRL('L')
153:
154: #ifdef SPACE
155: #undef SPACE
156: #endif
157: #define SPACE ' ' /* XXX - was 0x20 */
158:
159: #ifdef ESC
160: #undef ESC
161: #endif
162: #define ESC CTRL('[')
163:
164: #endif /* _CHARDEFS_H_ */
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