51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
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/* chardefs.h -- Character definitions for readline. */
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#ifndef _CHARDEFS_
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#ifndef savestring
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#define savestring(x) (char *)strcpy (xmalloc (1 + strlen (x)), (x))
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#endif
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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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/* Some character stuff. */
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#define control_character_threshold 0x020 /* smaller than this is control */
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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 CTRL(c) ((c) & (~control_character_bit))
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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) to_upper(((c)|control_character_bit))
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#define lowercase_p(c) (((c) > ('a' - 1) && (c) < ('z' + 1)))
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#define uppercase_p(c) (((c) > ('A' - 1) && (c) < ('Z' + 1)))
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#define pure_alphabetic(c) (lowercase_p(c) || uppercase_p(c))
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#ifndef to_upper
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#define to_upper(c) (lowercase_p(c) ? ((c) - 32) : (c))
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#define to_lower(c) (uppercase_p(c) ? ((c) + 32) : (c))
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#endif
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#define CTRL_P(c) ((c) < control_character_threshold)
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#define META_P(c) ((c) > meta_character_threshold)
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#define NEWLINE '\n'
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#define RETURN CTRL('M')
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#define RUBOUT 0x07f
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#define TAB '\t'
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#define ABORT_CHAR CTRL('G')
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#define PAGE CTRL('L')
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#define SPACE 0x020
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#define ESC CTRL('[')
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#endif /* _CHARDEFS_ */
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