79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/* $Id$
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Part of SWI-Prolog
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Author: Jan Wielemaker and Anjo Anjewierden
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E-mail: jan@swi.psy.uva.nl
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WWW: http://www.swi-prolog.org
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Copyright (C): 1985-2002, University of Amsterdam
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef UTF8_H_INCLUDED
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#define UTF8_H_INCLUDED
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#define PL_MB_LEN_MAX 16
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#define UTF8_MALFORMED_REPLACEMENT 0xfffd
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#define ISUTF8_MB(c) ((unsigned)(c) >= 0xc0 && (unsigned)(c) <= 0xfd)
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#define ISUTF8_CB(c) (((c)&0xc0) == 0x80) /* Is continuation byte */
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#define ISUTF8_FB2(c) (((c)&0xe0) == 0xc0)
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#define ISUTF8_FB3(c) (((c)&0xf0) == 0xe0)
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#define ISUTF8_FB4(c) (((c)&0xf8) == 0xf0)
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#define ISUTF8_FB5(c) (((c)&0xfc) == 0xf8)
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#define ISUTF8_FB6(c) (((c)&0xfe) == 0xfc)
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#define UTF8_FBN(c) (!(c&0x80) ? 0 : \
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ISUTF8_FB2(c) ? 1 : \
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ISUTF8_FB3(c) ? 2 : \
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ISUTF8_FB4(c) ? 3 : \
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ISUTF8_FB5(c) ? 4 : \
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ISUTF8_FB6(c) ? 5 : -1)
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#define UTF8_FBV(c,n) ( n == 0 ? c : (c & ((0x01<<(6-n))-1)) )
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#define utf8_get_char(in, chr) \
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(*(in) & 0x80 ? _PL__utf8_get_char(in, chr) \
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: (*(chr) = *(in), (char *)(in)+1))
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#define utf8_skip_char(in) \
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(*(in) & 0x80 ? _PL__utf8_skip_char(in) \
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: (char *)(in)+1)
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#define utf8_put_char(out, chr) \
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((chr) < 0x80 ? out[0]=(char)(chr), out+1 \
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: _PL__utf8_put_char(out, (chr)))
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extern char *_PL__utf8_get_char(const char *in, int *chr);
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extern char *_PL__utf8_put_char(char *out, int chr);
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extern char *_PL__utf8_skip_char(const char *out);
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extern size_t utf8_strlen(const char *s, size_t len);
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extern size_t utf8_strlen1(const char *s);
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extern const char * utf8_skip(const char *s, int n);
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extern int utf8_strncmp(const char *s1, const char *s2, size_t n);
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extern int utf8_strprefix(const char *s1, const char *s2);
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typedef enum {
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S_ASCII,
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S_LATIN,
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S_WIDE
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} unicode_type_t;
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extern unicode_type_t _PL__utf8_type(const char *in0, size_t len);
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#endif /*UTF8_H_INCLUDED*/
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