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https://gitlab.com/80486DX2-66/gists
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52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
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/*
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* string_case.h
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*
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* Author: Intel A80486DX2-66
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* License: Unlicense
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*/
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#ifndef _STRING_CASE_H
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#define _STRING_CASE_H
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#ifdef __STDC_ALLOC_LIB__
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# define __STDC_WANT_LIB_EXT2__ 1
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#else
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# define _POSIX_C_SOURCE 200809L
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#endif
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#include <stdlib.h>
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#include <string.h>
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#define ASCII_IS_LOWER(c) ((c) >= 'a' && (c) <= 'z')
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#define ASCII_IS_UPPER(c) ((c) >= 'A' && (c) <= 'Z')
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#define ASCII_IS_ALPHA(c) (ASCII_IS_LOWER(c) || ASCII_IS_UPPER(c))
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#define ASCII_MOD_ALPHA(c, v) (ASCII_IS_ALPHA(c) ? v : c)
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#define ASCII_LOWERCASE(c) (ASCII_MOD_ALPHA((c), (c) | 0x20))
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#define ASCII_UPPERCASE(c) (ASCII_MOD_ALPHA((c), ASCII_LOWERCASE(c) - 0x20))
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#define ASCII_MOD_STRM(s, m) \
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char* ptr = s; \
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while (*ptr) { \
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*ptr = m(*ptr); \
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ptr++; \
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} \
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return s
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#define ASCII_MOD_STR(s, m) \
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char* s_dup = strdup((s)), * ptr = s_dup; \
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while (*ptr) { \
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*ptr = m(*ptr); \
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ptr++; \
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} \
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return s_dup
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#define ASCII_UPPERCASE_STRM_T(s) ASCII_MOD_STRM(s, ASCII_UPPERCASE)
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#define ASCII_LOWERCASE_STRM_T(s) ASCII_MOD_STRM(s, ASCII_LOWERCASE)
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#define ASCII_UPPERCASE_STR_T(s) ASCII_MOD_STR(s, ASCII_UPPERCASE)
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#define ASCII_LOWERCASE_STR_T(s) ASCII_MOD_STR(s, ASCII_LOWERCASE)
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char* ascii_lowercase_str(const char* s);
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char* ascii_lowercase_strm(char* s);
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char* ascii_uppercase_str(const char* s);
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char* ascii_uppercase_strm(char* s);
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#endif /* _STRING_CASE_H */
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