#ifndef __CHARSET_UTF8_H
#define __CHARSET_UTF8_H

typedef enum {
	CHARSET_RET_OK = 1,
	CHARSET_RET_OUTPUT_FULL = 0,
	CHARSET_RET_INCOMPLETE_INPUT = -1,
	CHARSET_RET_INVALID_INPUT = -2
} CharsetResult;

typedef struct _CharsetTranslation CharsetTranslation;

/* Begin translation to UTF-8. */
CharsetTranslation *charset_to_utf8_begin(const char *charset,
					  int *unknown_charset);

void charset_to_utf8_end(CharsetTranslation *t);

void charset_to_utf8_reset(CharsetTranslation *t);

/* Translate src to UTF-8. If src_pos is non-NULL, it's updated to first
   non-translated character in src. */
CharsetResult
charset_to_ucase_utf8(CharsetTranslation *t,
		      const Buffer *src, size_t *src_pos, Buffer *dest);

/* Simple wrapper for above functions. If utf8_size is non-NULL, it's set
   to same as strlen(returned data). */
const char *
charset_to_ucase_utf8_string(const char *charset, int *unknown_charset,
			     const Buffer *data, size_t *utf8_size);

#endif