#ifndef SHARE__UTF8_H

#define SHARE__UTF8_H

/*

 * Convert a string between UTF-8 and the locale's charset.

 * Invalid bytes are replaced by '#', and characters that are

 * not available in the target encoding are replaced by '?'.

 *

 * If the locale's charset is not set explicitly then it is

 * obtained using nl_langinfo(CODESET), where available, the

 * environment variable CHARSET, or assumed to be US-ASCII.

 *

 * Return value of conversion functions:

 *

 *  -1 : memory allocation failed

 *   0 : data was converted exactly

 *   1 : valid data was converted approximately (using '?')

 *   2 : input was invalid (but still converted, using '#')

 *   3 : unknown encoding (but still converted, using '?')

 */

int utf8_encode(const char *from, char **to);

int utf8_decode(const char *from, char **to);

#endif