63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
#include "CrossPointState.h"
|
|
|
|
#include <HardwareSerial.h>
|
|
#include <SDCardManager.h>
|
|
#include <Serialization.h>
|
|
|
|
namespace {
|
|
constexpr uint8_t STATE_FILE_VERSION = 3;
|
|
constexpr char STATE_FILE[] = "/.crosspoint/state.bin";
|
|
} // namespace
|
|
|
|
CrossPointState CrossPointState::instance;
|
|
|
|
bool CrossPointState::saveToFile() const {
|
|
FsFile outputFile;
|
|
if (!SdMan.openFileForWrite("CPS", STATE_FILE, outputFile)) {
|
|
return false;
|
|
}
|
|
|
|
serialization::writePod(outputFile, STATE_FILE_VERSION);
|
|
serialization::writeString(outputFile, openEpubPath);
|
|
serialization::writePod(outputFile, lastSleepImage);
|
|
// Version 3: add cached book title and author
|
|
serialization::writeString(outputFile, openBookTitle);
|
|
serialization::writeString(outputFile, openBookAuthor);
|
|
outputFile.close();
|
|
return true;
|
|
}
|
|
|
|
bool CrossPointState::loadFromFile() {
|
|
FsFile inputFile;
|
|
if (!SdMan.openFileForRead("CPS", STATE_FILE, inputFile)) {
|
|
return false;
|
|
}
|
|
|
|
uint8_t version;
|
|
serialization::readPod(inputFile, version);
|
|
if (version > STATE_FILE_VERSION) {
|
|
Serial.printf("[%lu] [CPS] Deserialization failed: Unknown version %u\n", millis(), version);
|
|
inputFile.close();
|
|
return false;
|
|
}
|
|
|
|
serialization::readString(inputFile, openEpubPath);
|
|
if (version >= 2) {
|
|
serialization::readPod(inputFile, lastSleepImage);
|
|
} else {
|
|
lastSleepImage = 0;
|
|
}
|
|
|
|
// Version 3: read cached book title and author
|
|
if (version >= 3) {
|
|
serialization::readString(inputFile, openBookTitle);
|
|
serialization::readString(inputFile, openBookAuthor);
|
|
} else {
|
|
openBookTitle.clear();
|
|
openBookAuthor.clear();
|
|
}
|
|
|
|
inputFile.close();
|
|
return true;
|
|
}
|