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import curses
import os
import sys
import StringIO
from subprocess import *
import subprocess
# our screen
screen = curses.initscr()
curses.noecho()
curses.cbreak()
curses.curs_set(0)
curses.start_color()
curses.init_pair(1, curses.COLOR_WHITE, curses.COLOR_CYAN)
curses.init_pair(2, curses.COLOR_WHITE, curses.COLOR_RED)
# our stdin input
input_buffer = ""
# rows and columns of our screen
cols = int(subprocess.check_output(["tput", "cols"]))
rows = int(subprocess.check_output(["tput", "lines"]))
def call_sed(string):
process = Popen(["sed", "-e", string], stdout=PIPE, stdin=PIPE, stderr=PIPE)
ret = process.communicate(input_buffer)
if(process.returncode is not 0):
screen.addstr(ret[1][:-1].ljust(cols), curses.color_pair(2));
else:
screen.addstr(ret[0]);
return
def main():
input_string = ""
global input_buffer
for line in open(sys.argv[1], "r"):
input_buffer = input_buffer + line
# init our screen
screen.addstr("".ljust(cols), curses.color_pair(1));
screen.addstr(input_buffer)
screen.addstr("EOF")
try:
while 1:
key = screen.getch()
screen.clear()
if(key > 256):
continue;
if(key == 127):
input_string = input_string[:-1]
screen.addstr(input_string.ljust(cols), curses.color_pair(1));
screen.addstr(input_buffer)
screen.addstr("EOF")
continue;
elif(key == 13 or key == 10):
screen.addstr(input_string.ljust(cols), curses.color_pair(1));
call_sed(input_string)
screen.addstr("EOF")
continue;
else:
input_string+=chr(key)
screen.addstr(input_string.ljust(cols), curses.color_pair(1));
screen.addstr(input_buffer)
screen.addstr("EOF")
finally:
curses.endwin()
if __name__ == "__main__":
sys.exit(main())
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