espEasyPersistentMemory/espEasyMemory.cpp at master · Luanf/espEasyPersistentMemory · GitHub

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#include"Arduino.h"
#include"espEasyMemory.h"
#include<FS.h>


/* Return values: Success -> 1 if filename already existed, else 2.
 Fail -> -1 */
intespEasyMemory::storeIntVariable(int variable, String filename){
int returnValue;
	File file;

if (SPIFFS.exists(filename)){ //file already existed
 returnValue = 1;
	}
else{
 returnValue = 2;
	}

	file = SPIFFS.open(filename, "w");
	file.println(String(variable)); // writes as a String for simplicity, since we can easily add a '\n' with println. We could do a traditional write here too, but then we have to use traditional read on the recover methods.
	file.close();

if (!SPIFFS.exists(filename)){ //Check if the file was created
return -1;
	}
else{
return (returnValue);
	}
}

intespEasyMemory::storeFloatVariable(float variable, int decimalPoints, String filename){

int returnValue;
	File file;

if (SPIFFS.exists(filename)){ //file already existed
 returnValue = 1;
	}
else{
 returnValue = 2;
	}

	file = SPIFFS.open(filename, "w");
	file.println(String(variable, decimalPoints)); //Writes as a String for simplicity, since we can easily add a '\n' with println. We could do a traditional write here too, but then we have to use traditional read on the recover methods.
	file.close();

if (!SPIFFS.exists(filename)){ //Check if the file was created
return -1;
	}
else{
return (returnValue);
	}

}

intespEasyMemory::storeDoubleVariable(double variable, int decimalPoints, String filename){

int returnValue;
	File file;

if (SPIFFS.exists(filename)){ //file already existed
 returnValue = 1;
	}
else{
 returnValue = 2;
	}

	file = SPIFFS.open(filename, "w");
	file.println(String(variable, decimalPoints)); //Writes as a String for simplicity, since we can easily add a '\n' with println. We could do a traditional write here too, but then we have to use traditional read on the recover methods.
	file.close();

if (!SPIFFS.exists(filename)){ //Check if the file was created
return -1;
	}
else{
return (returnValue);
	}


}

intespEasyMemory::storeStringVariable(String variable, String filename){

int returnValue;
	File file;

if (SPIFFS.exists(filename)){
 returnValue = 1;
	}
else{
 returnValue = 2;
	}

	file = SPIFFS.open(filename, "w");
	file.println(variable);
	file.close();

if (!SPIFFS.exists(filename)){
return -1;
	}
else{
return (returnValue);
	}
}

intespEasyMemory::recoverIntVariable(int *variable, String filename){

if (!SPIFFS.exists(filename)){ // Trying to recover from a file that does not exist
return -1;
	}

	File file = SPIFFS.open(filename, "r");
int recoveredValue = file.parseInt();
	file.close();

	*variable = recoveredValue;

return1;
}
intespEasyMemory::recoverStringVariable(String *variable, String filename){

if (!SPIFFS.exists(filename)){ // Trying to recover from a file that does not exist
return -1;
	}

	File file = SPIFFS.open(filename, "r");
	String recoveredString = file.readStringUntil('\n');
	file.close();

	*variable = recoveredString;

return1;

}
intespEasyMemory::recoverFloatVariable(float *variable, String filename){

if (!SPIFFS.exists(filename)){ // Trying to recover from a file that does not exist
return -1;
	}

	File file = SPIFFS.open(filename, "r");
int recoveredValue = file.parseFloat();
	file.close();

	*variable = recoveredValue;

return1;
}
intespEasyMemory::recoverDoubleVariable(double *variable, String filename){

if (!SPIFFS.exists(filename)){ // Trying to recover from a file that does not exist
return -1;
	}

	File file = SPIFFS.open(filename, "r");
int recoveredValue = file.parseFloat();
	file.close();

	*variable = recoveredValue;

return1;

}

voidespEasyMemory::format(){
SPIFFS.format();
}