115 lines
3.1 KiB
C++
115 lines
3.1 KiB
C++
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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef nvs_storage_hpp
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#define nvs_storage_hpp
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#include <memory>
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#include <string>
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#include <unordered_map>
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#include "nvs.hpp"
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#include "nvs_types.hpp"
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#include "nvs_page.hpp"
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#include "nvs_pagemanager.hpp"
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//extern void dumpBytes(const uint8_t* data, size_t count);
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namespace nvs
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{
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class Storage
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{
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enum class StorageState : uint32_t {
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INVALID,
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ACTIVE,
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};
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struct NamespaceEntry : public intrusive_list_node<NamespaceEntry> {
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public:
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char mName[Item::MAX_KEY_LENGTH + 1];
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uint8_t mIndex;
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};
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typedef intrusive_list<NamespaceEntry> TNamespaces;
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public:
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~Storage();
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esp_err_t init(uint32_t baseSector, uint32_t sectorCount);
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esp_err_t createOrOpenNamespace(const char* nsName, bool canCreate, uint8_t& nsIndex);
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esp_err_t writeItem(uint8_t nsIndex, ItemType datatype, const char* key, const void* data, size_t dataSize);
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esp_err_t readItem(uint8_t nsIndex, ItemType datatype, const char* key, void* data, size_t dataSize);
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esp_err_t getItemDataSize(uint8_t nsIndex, ItemType datatype, const char* key, size_t& dataSize);
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esp_err_t eraseItem(uint8_t nsIndex, ItemType datatype, const char* key);
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template<typename T>
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esp_err_t writeItem(uint8_t nsIndex, const char* key, const T& value)
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{
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return writeItem(nsIndex, itemTypeOf(value), key, &value, sizeof(value));
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}
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template<typename T>
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esp_err_t readItem(uint8_t nsIndex, const char* key, T& value)
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{
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return readItem(nsIndex, itemTypeOf(value), key, &value, sizeof(value));
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}
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template<typename T>
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esp_err_t eraseItem(uint8_t nsIndex, const char* key)
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{
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return eraseItem(nsIndex, itemTypeOf<T>(), key);
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}
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protected:
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Page& getCurrentPage()
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{
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return mPageManager.back();
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}
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void clearNamespaces();
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esp_err_t findItem(uint8_t nsIndex, ItemType datatype, const char* key, Page* &page, Item& item)
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{
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size_t itemIndex = 0;
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for (auto it = std::begin(mPageManager); it != std::end(mPageManager); ++it) {
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auto err = it->findItem(nsIndex, datatype, key, itemIndex, item);
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if (err == ESP_OK) {
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page = it;
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return ESP_OK;
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}
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}
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return ESP_ERR_NVS_NOT_FOUND;
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}
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protected:
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size_t mPageCount;
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PageManager mPageManager;
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TNamespaces mNamespaces;
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CompressedEnumTable<bool, 1, 256> mNamespaceUsage;
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StorageState mState = StorageState::INVALID;
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};
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} // namespace nvs
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#endif /* nvs_storage_hpp */
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