Function buffer_has_more_data 

pub fn buffer_has_more_data(file: &mut File) -> Result<bool>

Checks if there is more data to read in the file.

Arguments

• file (&mut File): A mutable reference to the file to check.

Returns

• io::Result<bool>:
  • Ok(true) if there is more data to read.
  • Ok(false) if the end of the file (EOF) is reached.
  • Err(io::Error) if an I/O error occurs.

Behavior

• Saves the current position of the file cursor.
• Attempts to read a single byte to determine if there is more data.
• Restores the file cursor to its original position.