preferences.h

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#pragma once
 
#ifdef USE_HOST
 
#include "esphome/core/preferences.h"
#include <map>
 
namespace esphome {
namespace host {
 
class HostPreferenceBackend : public ESPPreferenceBackend {
 public:
  explicit HostPreferenceBackend(uint32_t key) { this->key_ = key; }
 
  bool save(const uint8_t *data, size_t len) override;
  bool load(uint8_t *data, size_t len) override;
 
 protected:
  uint32_t key_{};
};
 
class HostPreferences : public ESPPreferences {
 public:
  bool sync() override;
  bool reset() override;
 
  ESPPreferenceObject make_preference(size_t length, uint32_t type, bool in_flash) override;
  ESPPreferenceObject make_preference(size_t length, uint32_t type) override {
    return make_preference(length, type, false);
  }
 
  bool save(uint32_t key, const uint8_t *data, size_t len) {
    if (len > 255)
      return false;
    this->setup_();
    std::vector vec(data, data + len);
    this->data[key] = vec;
    return true;
  }
 
  bool load(uint32_t key, uint8_t *data, size_t len) {
    if (len > 255)
      return false;
    this->setup_();
    auto it = this->data.find(key);
    if (it == this->data.end())
      return false;
    const auto &vec = it->second;
    if (vec.size() != len)
      return false;
    memcpy(data, vec.data(), len);
    return true;
  }
 
 protected:
  void setup_();
  bool setup_complete_{};
  std::string filename_{};
  std::map<uint32_t, std::vector<uint8_t>> data{};
};
void setup_preferences();
extern HostPreferences *host_preferences;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 
}  // namespace host
}  // namespace esphome
 
#endif  // USE_HOST