change folders order on screen

[Chomemel]

Sorry, it might have been asked already but I couldn't find any info on it. Is it be possible to change the order of the folders while read by the OSCR?

I have HW3 and the folders appear from the oldest to the newest. It's not really convinient because the folders I'd like to use are usually the last ones that had been created. And I have several screens of ROMs and SAVES for several consoles. Is there a possibility somehow to change the order on screen, to make it easier to access folders that I use the most?

[sanni]

ChatGPT thinks this is possible and easy to do, maybe you can test it and see if it made any mistakes:

Replace fileBrowser() function found in Cart_Reader.ino in line 3409-3539 with this code:

bool getNthFile(FsFile& dir, FsFile& file, uint16_t targetIndex, uint8_t oflag) {
  dir.rewind();
  uint16_t found = 0;

  while (file.openNext(&dir, oflag)) {
    if (!file.isHidden() && (file.isDir() || file.isFile())) {
      if (found == targetIndex) return true;
      found++;
    }
    file.close();
  }

  return false;
}

void fileBrowser(const __FlashStringHelper* browserTitle) {
  char fileNames[7][FILENAME_LENGTH];
  int currFile;
  FsFile myDir;
  div_t page_layout;

  filebrowse = 1;

  // Root
  filePath[0] = '/';
  filePath[1] = '\0';

  // Temporary char array for filename
  char nameStr[FILENAME_LENGTH];

browserstart:

  // Print title
  println_Msg(browserTitle);

  // Set currFile back to 0
  currFile = 0;
  currPage = 1;
  lastPage = 1;

  // Open filepath directory
  if (!myDir.open(filePath)) {
    display_Clear();
    print_FatalError(sd_error_STR);
  }

  // Count files in directory
  while (myFile.openNext(&myDir, O_READ)) {
    if (!myFile.isHidden() && (myFile.isDir() || myFile.isFile())) {
      currFile++;
    }
    myFile.close();
  }
  myDir.close();

  page_layout = div(currFile, 7);
  numPages = page_layout.quot + 1;

  // Fill the array "answers" with 7 options to choose from in the file browser
  char answers[7][20];

page:

  // If there are less than 7 entries, set count to that number so no empty options appear
  byte count = currPage == numPages ? page_layout.rem : 7;

  // Open filepath directory
  if (!myDir.open(filePath)) {
    display_Clear();
    print_FatalError(sd_error_STR);
  }

  byte i = 0;
  uint16_t startIndex = currFile - ((currPage - 1) * 7) - 1;

  for (; i < count; i++) {
    uint16_t reverseIndex = startIndex - i;
    if (!getNthFile(myDir, myFile, reverseIndex, O_READ)) break;

    myFile.getName(nameStr, FILENAME_LENGTH);

    if (myFile.isDir()) {
      snprintf(fileNames[i], FILENAME_LENGTH, "/%s", nameStr);
    } else {
      snprintf(fileNames[i], FILENAME_LENGTH, "%s", nameStr);
    }
    myFile.close();
  }
  myDir.close();

  for (byte i = 0; i < 8; i++) {
    snprintf(answers[i], FILEOPTS_LENGTH, "%s", fileNames[i]);
  }

  // Create menu with title and 1-7 options to choose from
  unsigned char answer = question_box(browserTitle, answers, count, 0);

  // Check if the page has been switched
  if (currPage != lastPage) {
    lastPage = currPage;
    goto page;
  }

  // Check if we are supposed to go back to the root dir
  if (root) {
    filePath[0] = '/';
    filePath[1] = '\0';
    sd.chdir("/");
    root = 0;
    goto browserstart;
  }

  strncpy(fileName, fileNames[answer], FILENAME_LENGTH - 1);

  if (fileName[0] == '/') {
    strcat(filePath, fileName);
    char* dirName = fileName + 1;
    sd.chdir(dirName);
    goto browserstart;
  } else {
    sd.chdir("/");
  }
  filebrowse = 0;
}

[Chomemel]

I tried it today. So far I have no bug.
On screen, the folders and the files now appear from the newest to the oldest. The folders and files are mixed (like before). Was it the purpose?

Has it all be written by ChatGPT?
Could it also arrange files and folders by alphabetical order?
Are going to put it on contributors?
If it is that good, could he also creat the code write 27c322 with margin mode?

[sanni]

Sure you can just go to https://chatgpt.com, create free account, post the fileBrowser() function, tell it to not change the structure of it, so you know it will be compatible with the rest of the code, and then tell it what you want to have changed. Here is sorting alphabetically(just first letter though) and arranging folders before files:

/******************************************
  Filebrowser Module
*****************************************/
bool getNthFile(FsFile& dir, FsFile& result, uint16_t targetIndex, uint8_t oflag) {
  dir.rewind();
  uint16_t index = 0;

  // Folders first, then files
  for (uint8_t pass = 0; pass < 2; pass++) {
    // Alphanumerics
    for (char c = '0'; c <= 'z'; c++) {
      if (c == ':' || (c > '9' && c < 'A') || (c > 'Z' && c < 'a')) continue;

      dir.rewind();
      while (result.openNext(&dir, oflag)) {
        if (result.isHidden()) {
          result.close();
          continue;
        }

        char name[FILENAME_LENGTH];
        result.getName(name, FILENAME_LENGTH);

        bool isDir = result.isDir();
        if (((pass == 0 && isDir) || (pass == 1 && !isDir)) &&
            tolower(name[0]) == tolower(c)) {
          if (index == targetIndex) return true;
          index++;
        }

        result.close();
      }
    }

    // Special characters
    dir.rewind();
    while (result.openNext(&dir, oflag)) {
      if (result.isHidden()) {
        result.close();
        continue;
      }

      char name[FILENAME_LENGTH];
      result.getName(name, FILENAME_LENGTH);
      bool isDir = result.isDir();

      char first = tolower(name[0]);
      bool isAlnum = (first >= '0' && first <= '9') || (first >= 'a' && first <= 'z');

      if (((pass == 0 && isDir) || (pass == 1 && !isDir)) && !isAlnum) {
        if (index == targetIndex) return true;
        index++;
      }

      result.close();
    }
  }

  return false;
}

void fileBrowser(const __FlashStringHelper* browserTitle) {
  char fileNames[7][FILENAME_LENGTH];
  char answers[7][FILEOPTS_LENGTH];
  FsFile myDir, myFile;
  div_t page_layout;
  int currFile;
  byte i;

  filebrowse = 1;
  filePath[0] = '/';
  filePath[1] = '\0';

browserstart:
  println_Msg(browserTitle);
  currFile = 0;
  currPage = 1;
  lastPage = 1;

  if (!myDir.open(filePath)) {
    display_Clear();
    print_FatalError(sd_error_STR);
  }

  while (myFile.openNext(&myDir, O_READ)) {
    if (!myFile.isHidden() && (myFile.isDir() || myFile.isFile())) {
      currFile++;
    }
    myFile.close();
  }
  myDir.close();

  page_layout = div(currFile, 7);
  numPages = page_layout.quot + 1;

page:
  display_Clear();
  println_Msg(F("Sorting..."));
  display_Update();

  byte count = (currPage == numPages) ? page_layout.rem : 7;

  if (!myDir.open(filePath)) {
    display_Clear();
    print_FatalError(sd_error_STR);
  }

  i = 0;
  for (int fileIndex = (currPage - 1) * 7; i < count; fileIndex++) {
    if (getNthFile(myDir, myFile, fileIndex, O_READ)) {
      char nameStr[FILENAME_LENGTH];
      myFile.getName(nameStr, FILENAME_LENGTH);

      if (myFile.isDir()) {
        snprintf(fileNames[i], FILENAME_LENGTH, "/%s", nameStr);
      } else {
        snprintf(fileNames[i], FILENAME_LENGTH, "%s", nameStr);
      }

      snprintf(answers[i], FILEOPTS_LENGTH, "%s", fileNames[i]);
      myFile.close();
      i++;
    }
  }

  myDir.close();

  unsigned char answer = question_box(browserTitle, answers, count, 0);

  if (currPage != lastPage) {
    lastPage = currPage;
    goto page;
  }

  if (root) {
    filePath[0] = '/';
    filePath[1] = '\0';
    sd.chdir("/");
    root = 0;
    goto browserstart;
  }

  strncpy(fileName, fileNames[answer], FILENAME_LENGTH - 1);

  if (fileName[0] == '/') {
    strcat(filePath, fileName);
    char* dirName = fileName + 1;
    sd.chdir(dirName);
    goto browserstart;
  } else {
    sd.chdir("/");
  }

  filebrowse = 0;
}

/******************************************
  Main loop
*****************************************/

It's slow but you could probably also tell it to optimize it for speed. Personally I would not just commit stuff from ChatGPT to the OSCR github. I would first understand how it works then rewrite it in a better way. But it is very useful just to try things out. Because writing this function took like 4 seconds.

[Chomemel]

Thanks. I should give it a try someday. I should also learn how to code. I get that you don't want to put something directly from chatGPT or any AI.

[sanni]

I have worked on it some more and committed it to the Github. I did not include alphabetic sorting as it is too slow. But it now sort folders before files and there is an option to list the folders/files in reverse order.

[Chomemel]

Hey Sanni. I gave it a try today.
If I get it right, the sorting occurs each screen when dealing with folders/files.
I thought it more organised than before. I like it. Do you think it is possible to remove the writing "sorting..."?

[sanni]

You can remove the "Sorting..." message by deleting this line in Cart_Reader.ino https://github.com/sanni/cartreader/blob/master/Cart_Reader/Cart_Reader.ino#L3476

[Chomemel]

I tried v14.7 and and removed the line (I knew I could remove something but I thought it would be more than one line). It's great. Thanks a lot. It really helps.
You shouldn't have thanked niether me nore chatgpt. I only asked you if it was possible. And even if you asked chatgpt, you rewrite the lines. You should have thanked yourself.

[Ancyker]

I'm currently rewriting the way the UI is done, including the menus. I'll try to add this features, at least as an option, when I get to converting that part of the UI.

[Ancyker]

Here's the sorting on the new menu:

2025-06-02.08.45.57-3-1.mp4

This is just testing it by placing it right before the main menu, so it coming back after I hit reset is how long it takes.