Initial code import

src/configwrapperinterface.cpp

@@ -0,0 +1,31 @@
+#include "configwrapperinterface.h"
+
+#include "sdkconfig.h"
+#define LOG_LOCAL_LEVEL CONFIG_LOG_LOCAL_LEVEL_CONFIG
+
+// system includes
+#include <cstring>
+#include <cassert>
+
+// esp-idf includes
+#include <esp_log.h>
+#include <nvs.h>
+
+namespace espconfig {
+namespace {
+constexpr const char * const TAG = "CONFIG";
+} // namespace
+
+ConfigWrapperInterface::ConfigWrapperInterface(AllowReset allowReset, const char *nvsName) :
+    m_allowReset{allowReset == AllowReset::DoReset},
+    m_nvsName{nvsName}
+{
+    {
+        const auto length = std::strlen(nvsName);
+        if (length >= NVS_KEY_NAME_MAX_SIZE)
+            ESP_LOGE(TAG, "invalid nvs key %s (too long %zd)", nvsName, length);
+        assert(length < NVS_KEY_NAME_MAX_SIZE);
+    }
+}
+
+} // namespace espconfig