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// ArduinoJson - https://arduinojson.org
// Copyright Benoit Blanchon 2014-2021
// MIT License
#pragma once
#include <ArduinoJson/Namespace.hpp>
namespace ARDUINOJSON_NAMESPACE {
namespace Utf8 {
template <typename TStringBuilder>
inline void encodeCodepoint(uint32_t codepoint32, TStringBuilder& str) {
// this function was optimize for code size on AVR
// a buffer to store the string in reverse
char buf[5];
char* p = buf;
*(p++) = 0;
if (codepoint32 < 0x80) {
*(p++) = char((codepoint32));
} else {
*(p++) = char((codepoint32 | 0x80) & 0xBF);
uint16_t codepoint16 = uint16_t(codepoint32 >> 6);
if (codepoint16 < 0x20) { // 0x800
*(p++) = char(codepoint16 | 0xC0);
} else {
*(p++) = char((codepoint16 | 0x80) & 0xBF);
codepoint16 = uint16_t(codepoint16 >> 6);
if (codepoint16 < 0x10) { // 0x10000
*(p++) = char(codepoint16 | 0xE0);
} else {
*(p++) = char((codepoint16 | 0x80) & 0xBF);
codepoint16 = uint16_t(codepoint16 >> 6);
*(p++) = char(codepoint16 | 0xF0);
}
}
}
while (*(--p)) {
str.append(*p);
}
}
} // namespace Utf8
} // namespace ARDUINOJSON_NAMESPACE
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