1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
#!/usr/bin/python
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()
screen.keypad(True);
# default entry color
curses.init_pair(1, curses.COLOR_WHITE, curses.COLOR_CYAN)
# default error color
curses.init_pair(4, curses.COLOR_WHITE, curses.COLOR_RED)
# current entry color
curses.init_pair(3, curses.COLOR_WHITE, curses.COLOR_BLUE)
# line number color, invert of entry
curses.init_pair(2, curses.COLOR_CYAN, curses.COLOR_WHITE)
# 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_process(process, 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(argv):
input_string = ""
global input_buffer
try:
input_fh = open(argv[1], "r")
for line in input_fh:
input_buffer = input_buffer + line
except:
curses.endwin()
sys.exit("please specify a file")
# 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_process("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(sys.argv))
|
