/*
* UTF-8 Utilities
* Copyright
* (C) 2004 Joseph H. Allen
*
* This file is part of JOE (Joe's Own Editor)
*/
/* UTF-8 Encoder
*
* c is unicode character.
* buf is 7 byte buffer- utf-8 coded character is written to this followed by a 0 termination.
* returns length (not including terminator).
*/
ptrdiff_t utf8_encode(char *buf,int c);
/* UTF-8 decoder state machine */
struct utf8_sm {
char buf[8]; /* Record of sequence */
ptrdiff_t ptr; /* Record pointer */
int state; /* Current state. 0 = idle, anything else is no. of chars left in sequence */
int accu; /* Character accumulator */
};
/* UTF-8 Decoder
*
* Returns 0 - 7FFFFFFF: decoded character
* -1: character accepted, nothing decoded yet.
* -2: incomplete sequence
* -3: no sequence started, but character is between 128 - 191, 254 or 255
*/
int utf8_decode(struct utf8_sm *utf8_sm,char c);
int utf8_decode_string(const char *s);
int utf8_decode_fwrd(const char **p,ptrdiff_t *plen);
/* Initialize state machine */
void utf8_init(struct utf8_sm *utf8_sm);
void joe_locale();
void to_utf8(struct charmap *map,char *s,int c);
int from_utf8(struct charmap *map,const char *s);
int unictrl(int ucs);
int mk_wcwidth(int wide,int c);
extern struct charmap *locale_map; /* Default bytemap of terminal */
extern const char *locale_lang; /* Locale language (like de_DE) */
extern const char *locale_msgs; /* Locale language for editor messages (like de_DE) */
void my_iconv(char *dest, ptrdiff_t destsiz, struct charmap *dest_map,
const char *src,struct charmap *src_map);
struct charmap *guess_map(const char *buf, ptrdiff_t len);
extern int guess_non_utf8;
extern int guess_utf8;
