Description

This module provides file input and output operations

Example

' Simple example how to get the resolution of a JPEG image
 
import fileio
 
f = file("image.jpg", file_binary + file_read)
 
if !is_nothing(f)
    height = f.readbyte(0xa3) * 0x100 + f.readbyte(0xa4)
    width = f.readbyte(0xa5) * 0x100 + f.readbyte(0xa6)
 
    writeln("Resolution: " & width & " x " & height)
    f.close()
else
    writeln("Failed to open the file")
endif

Constants

• file_append — File mode: Append. Set the position indicator to the end of the file before each output operation
• file_binary — File mode: Binary. Open file as binary rather than text
• file_read — File mode: Read. Allow input operations on the file
• file_truncate — File mode: Truncate. When the file is opened, the old contents are immediately removed
• file_write — File mode: Write. Allow output operations on the file

Functions

• deletefile() — Remove a file
• deletefolder() — Remove a folder
• filecontent() — Get content of a text file
• fileexists() — Check whether a file exists
• fileput() — Write content to a file
• filesize() — Get size of a file (in bytes)
• getabsolutepath() — Get absolute path
• getcurrentdirectory() — Get current working directory
• getcurrentfile() — Get current executed .fio file
• getfilename() — Get file name of a path
• getfoldername() — Get folder name of a path
• listdirs() — Get list of directories of a specified path
• listfiles() — Get list of files of a specified path

Classes

• file — Provides file operations
  
  

  Member Functions

  • construct() — The constructor. Create an instance of class file and open a file
  • close() — Close the file associated with the handle and disassociate it
  • eof() — Check whether file pointer is at the end-of-file (EOF) or not
  • read() — Read a single sequence from the opened file
  • readbyte() — Read a single byte from the opened file (binary mode)
  • readln() — Read a single line from the opened file
  • readstring() — Read multiple bytes from the opened file and convert them to string (binary mode)
  
  
  • And 6 more member functions

Documentation version: 1.1.02. Updated on: 2 February 2026.
Dinfio is designed and written by Muhammad Faruq Nuruddinsyah. Copyright © 2014-2026. All rights reserved.