Wraper for FCP (Pascal compiler) on Linux

pascal_shell.py

#!usr/bin/python
# Developer : @nedimf
import sys
import os
from cmd import Cmd
import subprocess
from colorama import Fore,Back,Style
import signal

#Declaration of variables
#.pas extension
pas = '.pas'

#Check if script is run as sudo 
user = os.getenv('SUDO_USER')
if user is None:
  os.system('clear')
  print(Back.RED+Fore.WHITE+Style.BRIGHT+'THIS SHELL NEEDS SUDO PERMISSIONS TO RUN')
  exit()



#Check if FPC compiler is present on system
rc = subprocess.call(['which', 'fpc'],stderr=subprocess.STDOUT)
os.system('clear')
if rc == 0:
    print ('')
else:
    print (Back.RED+Fore.WHITE+Style.BRIGHT+'[2] TEST FAILED: FPC NOT PRESENT')
    print ("Run: sudo apt-get install fpc")
    exit()

def startFPC(filename):
 
 #Check if user entered .pas 
 if(pas in filename):
  print()
 else:
   filename =  filename + pas
 
 #Shell command 1 
 shell_1 = 'fpc '+filename
 #Shell command 2
 shell_2 = './'+filename
 shell_2 = shell_2.replace('.pas','')
 print(shell_2)
 os.system(shell_1)
 #Clear shell
 os.system('clear')
 #Run shell 2 
 os.system( shell_2) 


#Run shell 
class MyPrompt(Cmd):
   prompt = Fore.GREEN+Style.BRIGHT+'shell> '+Style.RESET_ALL
   intro = 'Pascal Shell v1.0 \nType ? for list of commands!'
   doc_header = 'Documentation for Pascal Shell v1.0'
   undoc_header = 'Not documented commands'
   #Disabling raw_input
   use_rawinput = False

   def do_run(self,inp):
         'Run FPC to compile .pas file'
         #Start FPC
         startFPC(inp)

   def do_exit(self, inp):
         'Exit shell'
         print('Exiting shell!')
         return True

   def do_clear(self,inp):
         'Clear'
         os.system('clear')

   def default(self, inp):
          if inp == 'x' or inp == 'q':
           return self.do_exit(inp)
          else:
           print("Sorry that command is not supported,type ? for help: {}".format(inp))

   do_EOF = do_exit

try:
    MyPrompt().cmdloop()
except KeyboardInterrupt:
    print("\nExiting shell!")
finally:
    exit(0)