Tauri Plugin TinysInternalFS / Internal Storage Manager

Important Notice

This plugin is primarily designed for Tinywang's convenience in developing Tauri applications and is tailored to personal needs only.

Currently, only the Android implementation is available. iOS support is pending.

This project is still under development and may be unstable.

Introduction

This Tauri plugin implements internal storage functionality ( /data/data/app.tauri/files ) on Android without requiring permissions.

Key Features:

• TFile Class: Provides a file handle based approach for sequential file operations. It ensures operations are performed in order, especially for writing, by using a write queue.
• Immediate File Operations: Offers functions for quick read and write operations (readFileImmediately, writeFileImmediately) without the need to manage file handles explicitly.
• File Existence Check: Allows you to verify if a file exists at a given path (checkFileExists).
• Close All Files: Provides a function to close all files opened by the plugin (closeFileAll).
• Get Files Directory: Retrieves the absolute path to the application's files directory on Android (getFilesDir).

Implemented Features:

• Using TFile Class:
  • Open file with mode (e.g., read, write)
  • Write content to file sequentially (write)
  • Read all content from file (readAll)
  • Close file (close)
• Immediate File Operations:
  • Read file immediately (readFileImmediately)
  • Write file immediately (writeFileImmediately)
• Utilities:
  • Check if file exists (checkFileExists)
  • Close all files (closeFileAll)
  • Get Files Directory (getFilesDir)

Library File Operation Function Implementation Status Table

Notes:

• ✅ : Implemented
• ❌ : Not Implemented

Usage

Using TFile Class for File Operations

The TFile class is designed for scenarios where you need to perform multiple operations on a file in a controlled and sequential manner. It's particularly useful for ensuring write operations are executed in the order they are called.

Opening a file and writing content:

import { TFile } from 'plugin-tinys-internal-fs-api';

async function writeFileExample() {
  try {
    const filePath = 'my_internal_file.txt';
    const file = new TFile(filePath, 'write'); // Open file in 'write' mode
    await file.waitUntilInitialized(); // Ensure file is opened

    await file.write('First line of content.\n');
    await file.write('Second line of content.\n');
    await file.write('Third line of content.\n');

    await file.close(); // Close the file after writing
    console.log('File written successfully using TFile class.');

  } catch (error) {
    console.error('Failed to write file using TFile:', error);
  }
}

writeFileExample();

Opening a file and reading all content:

import { TFile } from 'plugin-tinys-internal-fs-api';

async function readFileExample() {
  try {
    const filePath = 'my_internal_file.txt';
    const file = new TFile(filePath, 'read'); // Open file in 'read' mode
    await file.waitUntilInitialized(); // Ensure file is opened

    const content = await file.readAll();
    console.log('File content:', content);

    await file.close(); // Close the file after reading (important to release resources)

  } catch (error) {
    console.error('Failed to read file using TFile:', error);
  }
}

readFileExample();

Using Immediate Functions for Quick Operations

For simple, one-off read or write operations, you can use the immediate functions readFileImmediately and writeFileImmediately.

Writing content immediately:

import { writeFileImmediately } from 'plugin-tinys-internal-fs-api';

async function writeImmediatelyExample() {
  try {
    const filePath = 'quick_write_file.txt';
    await writeFileImmediately(filePath, 'Content written immediately!');
    console.log('File written immediately.');
  } catch (error) {
    console.error('Failed to write file immediately:', error);
  }
}

writeImmediatelyExample();

Reading content immediately:

import { readFileImmediately } from 'plugin-tinys-internal-fs-api';

async function readImmediatelyExample() {
  try {
    const filePath = 'quick_write_file.txt'; // Assuming this file exists
    const content = await readFileImmediately(filePath);
    console.log('File content read immediately:', content);
  } catch (error) {
    console.error('Failed to read file immediately:', error);
  }
}

readImmediatelyExample();

Checking if a File Exists

import { checkFileExists } from 'plugin-tinys-internal-fs-api';

async function checkFileExistenceExample() {
  try {
    const filePath = 'my_internal_file.txt';
    const exists = await checkFileExists(filePath);
    if (exists) {
      console.log(`File "${filePath}" exists.`);
    } else {
      console.log(`File "${filePath}" does not exist.`);
    }
  } catch (error) {
    console.error('Failed to check file existence:', error);
  }
}

checkFileExistenceExample();

Getting the Files Directory

This function retrieves the absolute path to the application's internal files directory on Android. This is useful when you need to know the base directory for storing files.

import { getFilesDir } from 'plugin-tinys-internal-fs-api';

async function getFilesDirExample() {
  try {
    const filesDir = await getFilesDir();
    console.log('Files directory:', filesDir);
  } catch (error) {
    console.error('Failed to get files directory:', error);
  }
}

getFilesDirExample();

Closing All Opened Files

It's good practice to close all files when your application is about to terminate or when you are finished with file operations to release resources.

import { closeFileAll } from 'plugin-tinys-internal-fs-api';

async function closeAllFilesExample() {
  try {
    await closeFileAll();
    console.log('All files closed.');
  } catch (error) {
    console.error('Failed to close all files:', error);
  }
}

closeAllFilesExample();