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// ArduinoJson - https://arduinojson.org
// Copyright Benoit Blanchon 2014-2021
// MIT License
#pragma once
namespace ARDUINOJSON_NAMESPACE {
template <>
struct Reader<const __FlashStringHelper*, void> {
const char* _ptr;
public:
explicit Reader(const __FlashStringHelper* ptr)
: _ptr(reinterpret_cast<const char*>(ptr)) {}
int read() {
return pgm_read_byte(_ptr++);
}
size_t readBytes(char* buffer, size_t length) {
memcpy_P(buffer, _ptr, length);
_ptr += length;
return length;
}
};
template <>
struct BoundedReader<const __FlashStringHelper*, void> {
const char* _ptr;
const char* _end;
public:
explicit BoundedReader(const __FlashStringHelper* ptr, size_t size)
: _ptr(reinterpret_cast<const char*>(ptr)), _end(_ptr + size) {}
int read() {
if (_ptr < _end)
return pgm_read_byte(_ptr++);
else
return -1;
}
size_t readBytes(char* buffer, size_t length) {
size_t available = static_cast<size_t>(_end - _ptr);
if (available < length)
length = available;
memcpy_P(buffer, _ptr, length);
_ptr += length;
return length;
}
};
} // namespace ARDUINOJSON_NAMESPACE
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