chardefs.h
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上传日期:2007-04-14
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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 1, 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,
- 675 Mass Ave, Cambridge, MA 02139, USA. */
- #ifndef _CHARDEFS_H_
- #define _CHARDEFS_H_
- #ifndef _m_ctype_h
- #include <ctype.h>
- #endif
- #if defined (HAVE_CONFIG_H)
- # if defined (HAVE_STRING_H)
- # include <string.h>
- # else
- # include <strings.h>
- # endif /* HAVE_STRING_H */
- #else
- # include <string.h>
- #endif /* !HAVE_CONFIG_H */
- #ifndef whitespace
- #define whitespace(c) (((c) == ' ') || ((c) == 't'))
- #endif
- #ifdef CTRL
- #undef CTRL
- #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) >= 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))
- /* Old versions
- #define _rl_lowercase_p(c) (((c) > ('a' - 1) && (c) < ('z' + 1)))
- #define _rl_uppercase_p(c) (((c) > ('A' - 1) && (c) < ('Z' + 1)))
- #define _rl_digit_p(c) ((c) >= '0' && (c) <= '9')
- */
- #define _rl_lowercase_p(c) (islower(c))
- #define _rl_uppercase_p(c) (isupper(c))
- #define _rl_digit_p(x) (isdigit (x))
- #define _rl_pure_alphabetic(c) (_rl_lowercase_p(c) || _rl_uppercase_p(c))
- #define ALPHABETIC(c) (_rl_lowercase_p(c) || _rl_uppercase_p(c) || _rl_digit_p(c))
- /* Old versions
- # define _rl_to_upper(c) (_rl_lowercase_p(c) ? ((c) - 32) : (c))
- # define _rl_to_lower(c) (_rl_uppercase_p(c) ? ((c) + 32) : (c))
- */
- #ifndef _rl_to_upper
- # define _rl_to_upper(c) (islower(c) ? toupper(c) : (c))
- # define _rl_to_lower(c) (isupper(c) ? tolower(c) : (c))
- #endif
- #ifndef _rl_digit_value
- #define _rl_digit_value(x) ((x) - '0')
- #endif
- #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('[')
- #ifndef ISOCTAL
- #define ISOCTAL(c) ((c) >= '0' && (c) <= '7')
- #endif
- #define OCTVALUE(c) ((c) - '0')
- #ifndef isxdigit
- # define isxdigit(c) (isdigit((c)) || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F'))
- #endif
- #define HEXVALUE(c)
- (((c) >= 'a' && (c) <= 'f')
- ? (c)-'a'+10
- : (c) >= 'A' && (c) <= 'F' ? (c)-'A'+10 : (c)-'0')
- #endif /* _CHARDEFS_H_ */