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SizedRamStringAdapter.hpp
00001 // ArduinoJson - arduinojson.org 00002 // Copyright Benoit Blanchon 2014-2021 00003 // MIT License 00004 00005 #pragma once 00006 00007 #include <ArduinoJson/Namespace.hpp> 00008 #include <ArduinoJson/Strings/IsString.hpp> 00009 #include <ArduinoJson/Strings/StoragePolicy.hpp> 00010 00011 #include <string.h> // strcmp 00012 00013 namespace ARDUINOJSON_NAMESPACE { 00014 00015 class SizedRamStringAdapter { 00016 public: 00017 SizedRamStringAdapter(const char* str, size_t n) : _str(str), _size(n) {} 00018 00019 int compare(const char* other) const { 00020 return safe_strncmp(_str, other, _size); 00021 } 00022 00023 bool equals(const char* expected) const { 00024 return compare(expected) == 0; 00025 } 00026 00027 bool isNull() const { 00028 return !_str; 00029 } 00030 00031 void copyTo(char* p, size_t n) const { 00032 memcpy(p, _str, n); 00033 } 00034 00035 size_t size() const { 00036 return _size; 00037 } 00038 00039 const char* begin() const { 00040 return _str; 00041 } 00042 00043 typedef storage_policies::store_by_copy storage_policy; 00044 00045 private: 00046 const char* _str; 00047 size_t _size; 00048 }; 00049 00050 template <typename TChar> 00051 inline SizedRamStringAdapter adaptString(const TChar* str, size_t size) { 00052 return SizedRamStringAdapter(reinterpret_cast<const char*>(str), size); 00053 } 00054 00055 } // namespace ARDUINOJSON_NAMESPACE
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