SPIFFS file operate question need help please

[shanren]

Hi everyone.
The below code write a file and rename it in SPIFFS, my question is can use it to rename any file's name or not?
Thanks
Adam

#include "SPIFFS.h"
 
void listAllFiles(){
 
  File root = SPIFFS.open("/");
 
  File file = root.openNextFile();
 
  while(file){
 
      Serial.print("FILE: ");
      Serial.println(file.name());
 
      file = root.openNextFile();
  }
 
}
 
void setup() {
 
  Serial.begin(115200);
 
  if (!SPIFFS.begin(true)) {
    Serial.println("An Error has occurred while mounting SPIFFS");
    return;
  }
 
  File file = SPIFFS.open("/test.txt", FILE_WRITE);
 
  if (!file) {
    Serial.println("There was an error opening the file for writing");
    return;
  }
 
  if (file.print("some content")) {
    Serial.println("File was written");
  } else {
    Serial.println("File write failed");
  }
 
  file.close();
 
  Serial.println("\n\n---BEFORE RENAMING---");
  listAllFiles();
 
  SPIFFS.rename("/test.txt", "/renamed.txt");
 
  Serial.println("\n\n---AFTER RENAMING---");
  listAllFiles();
 
}
 
void loop() {}

[J-M-L]

@shanren

my question is can use it to rename any file's name or not?

Would it make sense if you could only rename files called test.txt?

What does the Doc say?

[shanren]

Thank you J-M-L.
I didn't find useful info. of doc.
the test.txt is the code designed. and I added some thing like, and the code wait for type input that is a file listed.

while (Serial.available() == 0) {}     //wait for data available
    ReceiveName = Serial.readString();
    ReceiveName.trim();

I don't know why not work.

Revised:

String ReceiveName;

#include "SPIFFS.h"

void listAllFiles() {

  File root = SPIFFS.open("/");

  File file = root.openNextFile();

  while (file) {

    Serial.print("FILE: ");
    Serial.println(file.name());

    file = root.openNextFile();
  }

}

void setup() {

  Serial.begin(115200);

  if (!SPIFFS.begin(true)) {
    Serial.println("An Error has occurred while mounting SPIFFS");
    return;
  }

  File file = SPIFFS.open("/test.txt", FILE_WRITE);

  if (!file) {
    Serial.println("There was an error opening the file for writing");
    return;
  }

  if (file.print("some content")) {
    Serial.println("File was written");
  } else {
    Serial.println("File write failed");
  }

  file.close();

  Serial.println("\n\n---BEFORE RENAMING---");
  listAllFiles();

  ////////////////////////
  while (Serial.available() == 0) {}     //wait for data available
  ReceiveName = Serial.readString();
  ReceiveName.trim();

   Serial.println("ReceiveName =");
   Serial.println(ReceiveName);
  ////////////////////////

  //// SPIFFS.rename("/test.txt", "/renamed.txt");
  SPIFFS.rename(ReceiveName.c_str(), "/renamed.txt");

  Serial.println("\n\n---AFTER RENAMING---");
  listAllFiles();

}

void loop() {}

[mrdude]

You need to use SPIFFS.begin(); to mount spiffs.

Then you can write like this:

SPIFFS.begin();

File file = SPIFFS.open("/test.txt", "w");
file.print("some text");
file.close();

That's all.

[J-M-L]

The file you created and needs to be renamed is named test.txt

You get the new name from the Serial monitor

So the command should be

SPIFFS.rename("/test.txt", ReceiveName.c_str() );

Make sure you enter the leading / in the new name or add it programmatically before calling rename()

[shanren]

GREAT!
Thank you.
is it possible to make COPY/PASTE file operate without use web serve?

[J-M-L]

I don't know what you mean by copy/paste

[shanren]

I mean to copy a file from SPIFFS to SD card, or reverse.

[J-M-L]

you have to move the bytes programatically from one to the other. there is no OS doing that for you

[shanren]

Thank you.