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- /* chardefs.h -- Character definitions for readline. */
-
- /* Copyright (C) 1994 Free Software Foundation, Inc.
-
- This file is part of the GNU Readline Library, a library for
- reading lines of text with interactive input and history editing.
-
- The GNU Readline Library 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 2, or
- (at your option) any later version.
-
- The GNU Readline Library 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.
-
- The GNU General Public License is often shipped with GNU software, and
- is generally kept in a file called COPYING or LICENSE. If you do not
- have a copy of the license, write to the Free Software Foundation,
- 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
-
- #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)
- # define isxdigit(c) (isdigit((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 (c))
- #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
- #define ISDIGIT(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
- #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c))
- #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
- #define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
- #define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (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_ */
-