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/*
* 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 '?')
*/
#ifndef __UTF8_H
#define __UTF8_H
#ifdef __cplusplus
extern "C" {
#endif
void convert_set_charset(const char *charset);
int utf8_encode(const char *from, char **to);
int utf8_decode(const char *from, char **to);
wchar_t *make_unicode_string(const unsigned char *utf8);
unsigned char *make_utf8_string(const wchar_t *unicode);
#ifdef _UNICODE
#define make_tchar_string make_unicode_string
// Helpers for strings that only can contain 7bit chars to not make unneccessary memory allocation
#define make_nonutf_tchar_string(x) make_tchar_string(x)
#define free_nonutf_tchar_string(x) if(x) free(x);
#else
char *make_tchar_string(const unsigned char *utf8);
#define make_nonutf_tchar_string(x) (char*)x
#define free_nonutf_tchar_string(x)
#endif
#ifdef __cplusplus
}
#endif
#endif /* __UTF8_H */
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