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chardefs.hh
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chardefs.hh
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/* chardefs.h -- Character definitions for readline. */
/* Copyright (C) 1994-2015 Free Software Foundation, Inc.
This file is part of the GNU Readline Library (Readline), a library
for reading lines of text with interactive input and history editing.
Readline is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Readline is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Readline. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _CHARDEFS_H_
#define _CHARDEFS_H_
#include <ctype.h>
#if defined(HAVE_CONFIG_H)
#if defined(HAVE_STRING_H)
#if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
#include <memory.h>
#endif
#include <string.h>
#endif /* HAVE_STRING_H */
#if defined(HAVE_STRINGS_H)
#include <strings.h>
#endif /* HAVE_STRINGS_H */
#else
#include <string.h>
#endif /* !HAVE_CONFIG_H */
#ifndef whitespace
#define whitespace(c) (((c) == ' ') || ((c) == '\t'))
#endif
#ifdef CTRL
#undef CTRL
#endif
#ifdef UNCTRL
#undef UNCTRL
#endif
/* Some character stuff. */
#define control_character_threshold \
0x020 /* Smaller than this is control. */
#define control_character_mask 0x1f /* 0x20 - 1 */
#define meta_character_threshold 0x07f /* Larger than this is Meta. */
#define control_character_bit 0x40 /* 0x000000, must be off. */
#define meta_character_bit 0x080 /* x0000000, must be on. */
#define largest_char 255 /* Largest character value. */
#define CTRL_CHAR(c) \
((c) < control_character_threshold && (((c)&0x80) == 0))
#define META_CHAR(c) \
((c) > meta_character_threshold && (c) <= largest_char)
#define CTRL(c) ((c)&control_character_mask)
#define META(c) ((c) | meta_character_bit)
#define UNMETA(c) ((c) & (~meta_character_bit))
#define UNCTRL(c) _rl_to_upper(((c) | control_character_bit))
#if defined STDC_HEADERS || (!defined(isascii) && !defined(HAVE_ISASCII))
#define IN_CTYPE_DOMAIN(c) 1
#else
#define IN_CTYPE_DOMAIN(c) isascii(c)
#endif
#if !defined(isxdigit) && !defined(HAVE_ISXDIGIT) && !defined(__cplusplus)
#define isxdigit(c) \
(isdigit((unsigned char)(c)) || ((c) >= 'a' && (c) <= 'f') || \
((c) >= 'A' && (c) <= 'F'))
#endif
#if defined(CTYPE_NON_ASCII)
#define NON_NEGATIVE(c) 1
#else
#define NON_NEGATIVE(c) ((unsigned char)(c) == (c))
#endif
/* Some systems define these; we want our definitions. */
#undef ISPRINT
/* Beware: these only work with single-byte ASCII characters. */
#define ISALNUM(c) (IN_CTYPE_DOMAIN(c) && isalnum((unsigned char)c))
#define ISALPHA(c) (IN_CTYPE_DOMAIN(c) && isalpha((unsigned char)c))
#define ISDIGIT(c) (IN_CTYPE_DOMAIN(c) && isdigit((unsigned char)c))
#define ISLOWER(c) (IN_CTYPE_DOMAIN(c) && islower((unsigned char)c))
#define ISPRINT(c) (IN_CTYPE_DOMAIN(c) && isprint((unsigned char)c))
#define ISUPPER(c) (IN_CTYPE_DOMAIN(c) && isupper((unsigned char)c))
#define ISXDIGIT(c) (IN_CTYPE_DOMAIN(c) && isxdigit((unsigned char)c))
#define _rl_lowercase_p(c) (NON_NEGATIVE(c) && ISLOWER(c))
#define _rl_uppercase_p(c) (NON_NEGATIVE(c) && ISUPPER(c))
#define _rl_digit_p(c) ((c) >= '0' && (c) <= '9')
#define _rl_pure_alphabetic(c) (NON_NEGATIVE(c) && ISALPHA(c))
#define ALPHABETIC(c) (NON_NEGATIVE(c) && ISALNUM(c))
#ifndef _rl_to_upper
#define _rl_to_upper(c) \
(_rl_lowercase_p(c) ? toupper((unsigned char)c) : (c))
#define _rl_to_lower(c) \
(_rl_uppercase_p(c) ? tolower((unsigned char)c) : (c))
#endif
#ifndef _rl_digit_value
#define _rl_digit_value(x) ((x) - '0')
#endif
#ifndef _rl_isident
#define _rl_isident(c) (ISALNUM(c) || (c) == '_')
#endif
#ifndef ISOCTAL
#define ISOCTAL(c) ((c) >= '0' && (c) <= '7')
#endif
#define OCTVALUE(c) ((c) - '0')
#define HEXVALUE(c) \
(((c) >= 'a' && (c) <= 'f') \
? (c) - 'a' + 10 \
: (c) >= 'A' && (c) <= 'F' ? (c) - 'A' + 10 : (c) - '0')
#ifndef NEWLINE
#define NEWLINE '\n'
#endif
#ifndef RETURN
#define RETURN CTRL('M')
#endif
#ifndef RUBOUT
#define RUBOUT 0x7f
#endif
#ifndef TAB
#define TAB '\t'
#endif
#ifdef ABORT_CHAR
#undef ABORT_CHAR
#endif
#define ABORT_CHAR CTRL('G')
#ifdef PAGE
#undef PAGE
#endif
#define PAGE CTRL('L')
#ifdef SPACE
#undef SPACE
#endif
#define SPACE ' ' /* XXX - was 0x20 */
#ifdef ESC
#undef ESC
#endif
#define ESC CTRL('[')
#endif /* _CHARDEFS_H_ */