78 lines
3.4 KiB
C
78 lines
3.4 KiB
C
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// cp1252.h
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// James A. Pittman
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// Mar 11, 1999
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// Functions to support CodePage 1252. Versions of isalpha, isdigit, etc.
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// plus tolower(), toupper(), strlower(), and strupper().
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// Also translation functions, for translation between codepage 1252 and Unicode.
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#ifndef _CP1252_
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#define _CP1252_
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#include <windows.h>
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// Should non-breaking space be an alpha?
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#define _UPPER 0x1 /* upper case letter */
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#define _LOWER 0x2 /* lower case letter */
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#define _DIGIT 0x4 /* digit[0-9] */
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#define _SPACE 0x8 /* space, tab, carriage return, newline, */
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/* vertical tab, form feed, or non-breaking space */
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#define _PUNCT 0x10 /* punctuation character */
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#define _CONTROL 0x20 /* control character */
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#define _BLANK 0x40 /* space and non-breaking space chars only */
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#define _HEX 0x80 /* hexadecimal digit */
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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extern unsigned char _ctype1252[256];
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#define isalpha1252(_c) (_ctype1252[(unsigned char)_c] & (_UPPER | _LOWER))
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#define isupper1252(_c) (_ctype1252[(unsigned char)_c] & _UPPER)
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#define islower1252(_c) (_ctype1252[(unsigned char)_c] & _LOWER)
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#define isdigit1252(_c) (_ctype1252[(unsigned char)_c] & _DIGIT)
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#define isxdigit1252(_c) (_ctype1252[(unsigned char)_c] & _HEX)
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#define isspace1252(_c) (_ctype1252[(unsigned char)_c] & _SPACE)
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#define ispunct1252(_c) (_ctype1252[(unsigned char)_c] & _PUNCT)
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#define isalnum1252(_c) (_ctype1252[(unsigned char)_c] & (_UPPER | _LOWER | _DIGIT))
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#define isprint1252(_c) (_ctype1252[(unsigned char)_c] & (_BLANK | _PUNCT | _UPPER | _LOWER | _DIGIT))
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#define isgraph1252(_c) (_ctype1252[(unsigned char)_c] & (_PUNCT | _UPPER | _LOWER | _DIGIT))
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#define iscntrl1252(_c) (_ctype1252[(unsigned char)_c] & _CONTROL)
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#define isundef1252(_c) (!_ctype1252[(unsigned char)_c])
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// These 2 macros will return the arg letter if there is no lowercase (or uppercase)
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// equivalent (as far as I can tell this is not true of the ANSI c toupper() and tolower()).
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// Note that the German esset is a lowercase letter, but there is no uppercase equivalent.
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// caron S and OE diaeresis Y most letters
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#define tolower1252(_c) (isupper1252(_c) ? (((_c & 0xF0) == 0x80) ? (_c + 16) : ((_c == 0x9F) ? 0xFF : (_c + 32))) : _c)
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// caron s and oe diaeresis y esset most letters
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#define toupper1252(_c) (islower1252(_c) ? (((_c & 0xF0) == 0x90) ? (_c - 16) : ((_c == 0xFF) ? 0x9F : ((_c == 0xDF) ? _c : (_c - 32)))) : _c)
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// Two functions to translate case in strings. Any characters which do
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// not have case translations are preserved.
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extern void strlower1252(unsigned char *s);
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extern void strupper1252(unsigned char *s);
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// If successful, 1 is returned.
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// If an undefined code is passed in, 0 is returned and *pwch is unchanged.
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extern int CP1252ToUnicode(unsigned char ch, WCHAR *pwch);
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// If successful, 1 is returned.
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// If a unicode codepoint is passed in which is not supported in 1252,
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// 0 is returned and *pch is unchanged.
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extern int UnicodeToCP1252(WCHAR u, unsigned char *pch);
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extern unsigned char *UnicodeToCP1252String(WCHAR *wsz);
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WCHAR *CP1252StringToUnicode(unsigned char *psz, WCHAR *wsz, int *piLen);
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#ifdef __cplusplus
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};
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#endif
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#endif
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