61 lines
1.4 KiB
C++
61 lines
1.4 KiB
C++
// ArduinoJson - arduinojson.org
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// Copyright Benoit Blanchon 2014-2020
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// MIT License
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#pragma once
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#include <ArduinoJson/Namespace.hpp>
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#include <ArduinoJson/Strings/FlashStringIterator.hpp>
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#include <ArduinoJson/Strings/IsString.hpp>
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#include <ArduinoJson/Strings/StoragePolicy.hpp>
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namespace ARDUINOJSON_NAMESPACE {
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class SizedFlashStringAdapter {
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public:
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SizedFlashStringAdapter(const __FlashStringHelper* str, size_t sz)
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: _str(str), _size(sz) {}
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int compare(const char* other) const {
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if (!other && !_str)
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return 0;
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if (!_str)
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return -1;
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if (!other)
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return 1;
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return -strncmp_P(other, reinterpret_cast<const char*>(_str), _size);
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}
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bool equals(const char* expected) const {
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return compare(expected) == 0;
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}
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bool isNull() const {
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return !_str;
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}
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void copyTo(char* p, size_t n) const {
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memcpy_P(p, reinterpret_cast<const char*>(_str), n);
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}
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size_t size() const {
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return _size;
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}
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FlashStringIterator begin() const {
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return FlashStringIterator(_str);
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}
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typedef storage_policies::store_by_copy storage_policy;
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private:
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const __FlashStringHelper* _str;
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size_t _size;
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};
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inline SizedFlashStringAdapter adaptString(const __FlashStringHelper* str,
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size_t sz) {
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return SizedFlashStringAdapter(str, sz);
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}
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} // namespace ARDUINOJSON_NAMESPACE
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