[XP Script] Sort File Snippet - Printable Version

Code:
#==============================================================================

# ** Sort File Snippet

#------------------------------------------------------------------------------

#  This is a very simple executable method that will:

#    1) Open a text file

#    2) Sort the lines alphabetically

#    3) Re-write the txt file with the sorted lines

#==============================================================================





#--------------------------------------------------------------------------

# * Sort a file

#--------------------------------------------------------------------------

#

def sort_a_file

  #

  # Part 1: Define the file (in the project's root directory)

  filename  = "supercalifragilistic_expialidocious.txt"

  #

  # Part 2: Sort the contents

  file_handle = File.new(filename)        # Create a File's I/O Source variable

  

    # ---------------------------------------------------------------------

    #                                     # Optionally, an I/O Source variable

    #                                     # may have been opened with the 'r'

    #                                     # flag meaning 'readable'

    #

    # file_handle = File.open(filename, 'r') 

    # ---------------------------------------------------------------------

    

  lines       = file_handle.readlines     # Read all lines from the I/O source

  file_handle.close                       # Close the I/O source

  #

  # Part 3: Sort the contents

  lines.sort!                             # Sort all the lines read

  #

  # Part 4: Write the contents back

  file_handle = File.open(filename, 'w')  # Set a I/O Source as a writeable file

  file_handle.write(lines)                # Write all lines into the I/O Source

  file_handle.close                       # Close the I/O source

  #

end

  

# Execute the method at start

sort_a_file