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- /* chardefs.h -- Character definitions for readline. */
- #ifndef _CHARDEFS_
- #define _CHARDEFS_
-
- #include <ctype.h>
-
- #ifndef savestring
- #define savestring(X) _rl_savestring(X)
- extern char * _rl_savestring ();
- #endif
-
- #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 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 META_CHAR(c) ((c) > meta_character_threshold && (c) <= largest_char)
- #define CTRL(c) ((c) & (~control_character_bit))
- #define META(c) ((c) | meta_character_bit)
-
- #define UNMETA(c) ((c) & (~meta_character_bit))
- #define UNCTRL(c) to_upper(((c)|control_character_bit))
-
- #define lowercase_p(c) (((c) > ('a' - 1) && (c) < ('z' + 1)))
- #define uppercase_p(c) (((c) > ('A' - 1) && (c) < ('Z' + 1)))
-
- #define pure_alphabetic(c) (lowercase_p(c) || uppercase_p(c))
-
- #ifndef to_upper
- #define to_upper(c) (lowercase_p(c) ? ((c) - 32) : (c))
- #define to_lower(c) (uppercase_p(c) ? ((c) + 32) : (c))
- #endif
-
- #define CTRL_P(c) ((c) < control_character_threshold)
- #define META_P(c) ((c) > meta_character_threshold)
-
- #ifndef NEWLINE
- #define NEWLINE '\n'
- #endif
-
- #ifndef RETURN
- #define RETURN CTRL('M')
- #endif
-
- #ifndef RUBOUT
- #define RUBOUT 0x07f
- #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 0x020
-
- #ifdef ESC
- #undef ESC
- #endif
-
- #define ESC CTRL('[')
-
- #endif /* _CHARDEFS_ */
-