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/*
* is_utf8 is distributed under the following terms:
*
* Copyright (c) 2013 Palard Julien. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _IS_UTF8_H
#define _IS_UTF8_H
#include <stdlib.h>
#include <sys/types.h>
#include "intern_string.hh"
#include "optional.hpp"
struct utf8_scan_result {
const char* usr_message{nullptr};
size_t usr_faulty_bytes{0};
string_fragment usr_valid_frag{string_fragment::invalid()};
nonstd::optional<string_fragment> usr_remaining;
bool usr_has_ansi{false};
size_t usr_column_width_guess{0};
const char* remaining_ptr(const string_fragment& frag) const
{
if (this->usr_remaining) {
return this->usr_remaining->begin();
} else {
return nullptr;
}
}
bool is_valid() const { return this->usr_message == nullptr; }
};
utf8_scan_result is_utf8(string_fragment frag,
nonstd::optional<unsigned char> terminator
= nonstd::nullopt);
#endif /* _IS_UTF8_H */
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