/* +--------------------------------------------------------------------------+
** |                          _   _       _                                   |
** |                         | \ | |     (_)                                  |
** |                         |  \| | ___  _  __ _                             |
** |                         | . ` |/ _ \| |/ _` |                            |
** |                         | |\  | (_) | | (_| |                            |
** |                         |_| \_|\___/| |\__,_|                            |
** |                                    _/ |                                  |
** |                                   |__/                                   |
** +--------------------------------------------------------------------------+
** | Copyright (c) 2022 Francesco Cozzuto <francesco.cozzuto@gmail.com>       |
** +--------------------------------------------------------------------------+
** | This file is part of The Noja Interpreter.                               |
** |                                                                          |
** | The Noja Interpreter is free software: you can redistribute it and/or    |
** | modify it under the terms of the GNU General Public License as published |
** | by the Free Software Foundation, either version 3 of the License, or (at |
** | your option) any later version.                                          |
** |                                                                          |
** | The Noja Interpreter is distributed in the hope that it will be useful,  |
** | but WITHOUT ANY WARRANTY; without even the implied warranty of           |
** | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
** | Public License for more details.                                         |
** |                                                                          |
** | You should have received a copy of the GNU General Public License along  |
** | with The Noja Interpreter. If not, see <http://www.gnu.org/licenses/>.   |
** +--------------------------------------------------------------------------+ 
*/

#ifndef UTF8_H
#define UTF8_H
#include <stdint.h> // uint32_t
int utf8_sequence_from_utf32_codepoint(char *utf8_data, int nbytes, uint32_t utf32_code);
int utf8_sequence_to_utf32_codepoint(const char *utf8_data, int nbytes, uint32_t *utf32_code);
int utf8_strlen(const char *utf8_data, int nbytes);
int utf8_prev(const char *utf8_data, int nbytes, int idx, uint32_t *utf32_code);
int utf8_next(const char *utf8_data, int nbytes, int idx, uint32_t *utf32_code);
int utf8_curr(const char *utf8_data, int nbytes, int idx, uint32_t *utf32_code);
#endif // #ifndef UTF8_H