1 /* chardefs.h -- Character definitions for readline. */ 2 #ifndef _CHARDEFS_ 3 4 #ifndef savestring 5 #define savestring(x) (char *)strcpy (xmalloc (1 + strlen (x)), (x)) 6 #endif 7 8 #ifndef whitespace 9 #define whitespace(c) (((c) == ' ') || ((c) == '\t')) 10 #endif 11 12 #ifdef CTRL 13 #undef CTRL 14 #endif 15 16 /* Some character stuff. */ 17 #define control_character_threshold 0x020 /* smaller than this is control */ 18 #define meta_character_threshold 0x07f /* larger than this is Meta. */ 19 #define control_character_bit 0x40 /* 0x000000, must be off. */ 20 #define meta_character_bit 0x080 /* x0000000, must be on. */ 21 22 #define CTRL(c) ((c) & (~control_character_bit)) 23 #define META(c) ((c) | meta_character_bit) 24 25 #define UNMETA(c) ((c) & (~meta_character_bit)) 26 #define UNCTRL(c) to_upper(((c)|control_character_bit)) 27 28 #define lowercase_p(c) (((c) > ('a' - 1) && (c) < ('z' + 1))) 29 #define uppercase_p(c) (((c) > ('A' - 1) && (c) < ('Z' + 1))) 30 31 #define pure_alphabetic(c) (lowercase_p(c) || uppercase_p(c)) 32 33 #ifndef to_upper 34 #define to_upper(c) (lowercase_p(c) ? ((c) - 32) : (c)) 35 #define to_lower(c) (uppercase_p(c) ? ((c) + 32) : (c)) 36 #endif 37 38 #define CTRL_P(c) ((c) < control_character_threshold) 39 #define META_P(c) ((c) > meta_character_threshold) 40 41 #define NEWLINE '\n' 42 #define RETURN CTRL('M') 43 #define RUBOUT 0x07f 44 #define TAB '\t' 45 #define ABORT_CHAR CTRL('G') 46 #define PAGE CTRL('L') 47 #define SPACE 0x020 48 #define ESC CTRL('[') 49 50 #endif /* _CHARDEFS_ */ 51