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166 lines
4.6 KiB
C
166 lines
4.6 KiB
C
/* chardefs.h -- Character definitions for readline. */
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/* Copyright (C) 1994 Free Software Foundation, Inc.
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This file is part of the GNU Readline Library, a library for
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reading lines of text with interactive input and history editing.
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The GNU Readline Library is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2, or
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(at your option) any later version.
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The GNU Readline Library is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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The GNU General Public License is often shipped with GNU software, and
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is generally kept in a file called COPYING or LICENSE. If you do not
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have a copy of the license, write to the Free Software Foundation,
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59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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#ifndef _CHARDEFS_H_
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#define _CHARDEFS_H_
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#include <ctype.h>
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#if defined (HAVE_CONFIG_H)
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# if defined (HAVE_STRING_H)
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# if ! defined (STDC_HEADERS) && defined (HAVE_MEMORY_H)
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# include <memory.h>
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# endif
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# include <string.h>
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# endif /* HAVE_STRING_H */
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# if defined (HAVE_STRINGS_H)
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# include <strings.h>
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# endif /* HAVE_STRINGS_H */
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#else
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# include <string.h>
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#endif /* !HAVE_CONFIG_H */
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#ifndef whitespace
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#define whitespace(c) (((c) == ' ') || ((c) == '\t'))
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#endif
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#ifdef CTRL
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# undef CTRL
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#endif
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#ifdef UNCTRL
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# undef UNCTRL
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#endif
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/* Some character stuff. */
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#define control_character_threshold 0x020 /* Smaller than this is control. */
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#define control_character_mask 0x1f /* 0x20 - 1 */
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#define meta_character_threshold 0x07f /* Larger than this is Meta. */
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#define control_character_bit 0x40 /* 0x000000, must be off. */
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#define meta_character_bit 0x080 /* x0000000, must be on. */
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#define largest_char 255 /* Largest character value. */
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#define CTRL_CHAR(c) ((c) < control_character_threshold && (((c) & 0x80) == 0))
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#define META_CHAR(c) ((c) > meta_character_threshold && (c) <= largest_char)
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#define CTRL(c) ((c) & control_character_mask)
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#define META(c) ((c) | meta_character_bit)
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#define UNMETA(c) ((c) & (~meta_character_bit))
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#define UNCTRL(c) _rl_to_upper(((c)|control_character_bit))
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#if defined STDC_HEADERS || (!defined (isascii) && !defined (HAVE_ISASCII))
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# define IN_CTYPE_DOMAIN(c) 1
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#else
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# define IN_CTYPE_DOMAIN(c) isascii(c)
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#endif
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#if !defined (isxdigit) && !defined (HAVE_ISXDIGIT)
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# define isxdigit(c) (isdigit((c)) || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F'))
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#endif
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#if defined (CTYPE_NON_ASCII)
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# define NON_NEGATIVE(c) 1
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#else
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# define NON_NEGATIVE(c) ((unsigned char)(c) == (c))
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#endif
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/* Some systems define these; we want our definitions. */
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#undef ISPRINT
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/* Beware: these only work with single-byte ASCII characters. */
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#define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c))
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#define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
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#define ISDIGIT(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
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#define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c))
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#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
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#define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
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#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
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#define _rl_lowercase_p(c) (NON_NEGATIVE(c) && ISLOWER(c))
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#define _rl_uppercase_p(c) (NON_NEGATIVE(c) && ISUPPER(c))
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#define _rl_digit_p(c) ((c) >= '0' && (c) <= '9')
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#define _rl_pure_alphabetic(c) (NON_NEGATIVE(c) && ISALPHA(c))
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#define ALPHABETIC(c) (NON_NEGATIVE(c) && ISALNUM(c))
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#ifndef _rl_to_upper
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# define _rl_to_upper(c) (_rl_lowercase_p(c) ? toupper((unsigned char)c) : (c))
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# define _rl_to_lower(c) (_rl_uppercase_p(c) ? tolower((unsigned char)c) : (c))
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#endif
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#ifndef _rl_digit_value
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# define _rl_digit_value(x) ((x) - '0')
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#endif
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#ifndef _rl_isident
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# define _rl_isident(c) (ISALNUM(c) || (c) == '_')
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#endif
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#ifndef ISOCTAL
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# define ISOCTAL(c) ((c) >= '0' && (c) <= '7')
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#endif
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#define OCTVALUE(c) ((c) - '0')
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#define HEXVALUE(c) \
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(((c) >= 'a' && (c) <= 'f') \
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? (c)-'a'+10 \
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: (c) >= 'A' && (c) <= 'F' ? (c)-'A'+10 : (c)-'0')
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#ifndef NEWLINE
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#define NEWLINE '\n'
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#endif
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#ifndef RETURN
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#define RETURN CTRL('M')
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#endif
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#ifndef RUBOUT
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#define RUBOUT 0x7f
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#endif
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#ifndef TAB
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#define TAB '\t'
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#endif
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#ifdef ABORT_CHAR
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#undef ABORT_CHAR
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#endif
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#define ABORT_CHAR CTRL('G')
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#ifdef PAGE
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#undef PAGE
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#endif
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#define PAGE CTRL('L')
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#ifdef SPACE
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#undef SPACE
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#endif
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#define SPACE ' ' /* XXX - was 0x20 */
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#ifdef ESC
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#undef ESC
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#endif
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#define ESC CTRL('[')
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#endif /* _CHARDEFS_H_ */
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