/* $Header: /home/agc/src/libutf-2.10/RCS/utf.h,v 1.4 1997/03/14 16:27:18 agc Exp $ */

/*
 * Copyright © 1996-1997 Alistair G. Crooks.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Alistair G. Crooks.
 * 4. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef UTF_H_
#define UTF_H_

/* a Unicode character */
typedef unsigned short	Rune;

enum {
	UTFmax = 3,		/* maximum bytes per Rune */
	Runesync = 0x21,	/* can't represent part of a UTF sequence */
	Runeself = 0xa0,	/* rune and UTF sequences are the same */
	Runeerror = 0x80	/* decoding error in UTF */
};

/* prototypes */
int runetochar(char *cp, Rune *rp);
int chartorune(Rune *rp, char *cp);
int runelen(long r);
int fullrune(char *cp, int n);
int utflen(char *s);
int utfbytes(char *s);
char *utfrune(char *cp, long r);
char *utfrrune(char *cp, long r);
char *utfutf(char *big, char *little);

int utfcmp(char *s1, char *s2);
int utfncmp(char *s1, char *s2, int rc);
int utfspan(char *s1, char *s2, int *rc);
int utfcspan(char *s1, char *s2, int *rc);
int priorrune(Rune *rp, char *s);
char *utffindrune(char *s, char *charset);
int runeutfncmp(Rune *rp, char *up, int n);
char *utfcpy(char *dst, char *src);
char *utfncpy(char *dst, char *src, int nbytes);
int utf_snprintf(char *buf, int size, char *fmt, ...);
int utfnlen(char *s, int n);
char *utfcat(char *src, char *append);
char *utfncat(char *src, char *append, int slen);

int AsciiToNumber(char *s, int cc, int base);
int CharToNum(char *cp);
int CharToDec(unsigned char ch);
int UNICODE_isdigit(Rune ch);
int UNICODE_isletter(Rune ch);
int UNICODE_IsIdent(Rune ch);
Rune UNICODE_tolower(Rune ch);
Rune UNICODE_toupper(Rune ch);
int UNICODE_isalpha(Rune c);
int UNICODE_isupper(Rune c);
int UNICODE_islower(Rune c);
int UNICODE_isnumber(Rune c);
int UNICODE_isxdigit(Rune c);
int UNICODE_isalnum(Rune c);
int UNICODE_isspace(Rune c);
int UNICODE_isblank(Rune c);
int UNICODE_ispunct(Rune c);
int UNICODE_isprint(Rune c);
int UNICODE_iscntrl(Rune c);
int UNICODE_isascii(Rune c);
int UNICODE_isgraph(Rune c);
int UNICODE_InRange(Rune first, Rune last, Rune ch);
int UNICODE_mixed_strncmp(Rune *s1, char *s2, int n);
int UNICODE_strcasecmp(Rune *s1, Rune *s2);
int UNICODE_strlen(Rune *s);
Rune *UNICODE_strcat(Rune *s1, Rune *s2);
Rune *UNICODE_strchr(Rune *s, Rune ch);
int UNICODE_strcmp(Rune *s1, Rune *s2);
Rune *UNICODE_strcpy(Rune *to, Rune *from);
int UNICODE_strcspn(Rune *s1, Rune *s2);
Rune *UNICODE_strdup(Rune *s);
int UNICODE_strncasecmp(Rune *s1, Rune *s2, int n);
Rune *UNICODE_strncat(Rune *s1, Rune *s2, int n);
int UNICODE_strncmp(Rune *s1, Rune *s2, int n);
Rune *UNICODE_strncpy(Rune *to, Rune *from, int n);
Rune *UNICODE_strpbrk(Rune *s1, Rune *s2);
Rune *UNICODE_strrchr(Rune *s, Rune ch);
int UNICODE_strspn(Rune *s1, Rune *s2);
Rune *UNICODE_strstr(Rune *s, Rune *find);

int urecollseq(char *collseq);
int utflangcmp(char *s1, char *s2, char *lang, int icase);

#endif /* ! UTF_H_ */