Rune Harlyk
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/**
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* ESP32 SvelteKit
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*
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* A simple, secure and extensible framework for IoT projects for ESP32 platforms
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* with responsive Sveltekit front-end built with TailwindCSS and DaisyUI.
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* https://github.com/theelims/ESP32-sveltekit
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*
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* Copyright (C) 2018 - 2023 rjwats
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* Copyright (C) 2023 theelims
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*
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* All Rights Reserved. This software may be modified and distributed under
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* the terms of the LGPL v3 license. See the LICENSE file for details.
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**/
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#include <SettingValue.h>
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namespace SettingValue
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{
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const String PLATFORM = "esp32";
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/**
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* Returns a new string after replacing each instance of the pattern with a value generated by calling the provided
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* callback.
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*/
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String replaceEach(String value, String pattern, String (*generateReplacement)())
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{
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while (true)
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{
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int index = value.indexOf(pattern);
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if (index == -1)
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{
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break;
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}
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value = value.substring(0, index) + generateReplacement() + value.substring(index + pattern.length());
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}
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return value;
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}
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/**
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* Generates a random number, encoded as a hex string.
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*/
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String getRandom()
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{
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return String(random(2147483647), HEX);
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}
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/**
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* Uses the station's MAC address to create a unique id for each device.
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*/
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String getUniqueId()
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{
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uint8_t mac[6];
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esp_read_mac(mac, ESP_MAC_WIFI_STA);
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char macStr[13] = {0};
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sprintf(macStr, "%02x%02x%02x%02x%02x%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
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return String(macStr);
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}
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String format(String value)
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{
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value = replaceEach(value, "#{random}", getRandom);
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value.replace("#{unique_id}", getUniqueId());
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value.replace("#{platform}", PLATFORM);
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return value;
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}
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}; // end namespace SettingValue
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