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/*
* Author: Sven Gothel <sgothel@jausoft.com>
* Copyright (c) 2008-2010 Bjoern Hoehrmann <bjoern@hoehrmann.de> (see details below)
* Copyright (c) 2020 Gothel Software e.K.
* Copyright (c) 2020 ZAFENA AB
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef JAU_DFA_UTF8_DECODE_HPP_
#define JAU_DFA_UTF8_DECODE_HPP_
#define DFA_UTF8_ACCEPT 0
#define DFA_UTF8_REJECT 12
#include <string>
#include <cstdint>
#include <cinttypes>
namespace jau {
/**
* \ingroup ByteUtils
*
* @param state
* @param codep
* @param byte_value
* @return
*/
uint32_t dfa_utf8_decode(uint32_t & state, uint32_t & codep, const uint32_t byte_value);
/**
* \ingroup ByteUtils
*
* Returns all valid consecutive UTF-8 characters within buffer
* in the range up to buffer_size or until EOS.
* <p>
* In case a non UTF-8 character has been detected,
* the content will be cut off and the decoding loop ends.
* </p>
* <p>
* Method utilizes a finite state machine detecting variable length UTF-8 codes.
* See Bjoern Hoehrmann's site <http://bjoern.hoehrmann.de/utf-8/decoder/dfa/> for details.
* </p>
*/
std::string dfa_utf8_decode(const uint8_t *buffer, const size_t buffer_size);
} /* namespace jau */
#endif /* JAU_DFA_UTF8_DECODE_HPP_ */
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