utf.h

/* See LICENSE file for copyright and license details. */
#ifndef UTF_H
#define UTF_H

#include <stddef.h>
#include <stdint.h>

#define RUNE_C(x) INT32_C(x)
typedef int32_t Rune;

#define UTFmax 6 /* maximum bytes per rune */

#define Runeself  0x80               /* rune and utf are equal (<) */
#define Runemax   RUNE_C(0x7FFFFFFF) /* maximum rune value */
#define Runeerror ((Rune)-1)         /* decoding error in utf */

#ifdef __cplusplus
extern "C" {
#endif

int charntorune(Rune *, const char *, size_t);
int chartorune(Rune *, const char *);
int fullrune(const char *, size_t);
int runelen(const Rune);
size_t runenlen(const Rune *, size_t);
int runetochar(char *, const Rune *);
size_t utflen(const char *);
size_t utfnlen(const char *, size_t);
char *utfrune(const char *, Rune);
char *utfrrune(const char *, Rune);
char *utfutf(const char *, const char *);

int isalnumrune(Rune);
int isalpharune(Rune);
int isblankrune(Rune);
int iscntrlrune(Rune);
int isdigitrune(Rune);
int isgraphrune(Rune);
int islowerrune(Rune);
int isprintrune(Rune);
int ispunctrune(Rune);
int isspacerune(Rune);
int istitlerune(Rune);
int isupperrune(Rune);
int isvalidrune(Rune);
int isxdigitrune(Rune);
Rune tolowerrune(Rune);
Rune toupperrune(Rune);

Rune *runestrcat(Rune *, const Rune *);
Rune *runestrncat(Rune *, const Rune *, size_t);
int runestrcmp(const Rune *, const Rune *);
int runestrncmp(const Rune *, const Rune *, size_t);
Rune *runestrcpy(Rune *, const Rune *);
Rune *runestrncpy(Rune *, const Rune *, size_t);
size_t runestrlen(const Rune *);
Rune *runestrchr(const Rune *, Rune);
Rune *runestrrchr(const Rune *, Rune);
Rune *runestrdup(const Rune *);
Rune *runestrstr(const Rune *, const Rune *);

extern const unsigned char utftab[64];

#ifdef __cplusplus
}
#endif

#endif