56 lines
1.3 KiB
C++
56 lines
1.3 KiB
C++
#include <SettingValue.h>
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namespace SettingValue {
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#ifdef ESP32
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const String PLATFORM = "esp32";
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#elif defined(ESP8266)
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const String PLATFORM = "esp8266";
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#endif
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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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while (true) {
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int index = value.indexOf(pattern);
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if (index == -1) {
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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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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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uint8_t mac[6];
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#ifdef ESP32
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esp_read_mac(mac, ESP_MAC_WIFI_STA);
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#elif defined(ESP8266)
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wifi_get_macaddr(STATION_IF, mac);
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#endif
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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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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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