120 lines
3.8 KiB
Plaintext
120 lines
3.8 KiB
Plaintext
|
import os
|
||
|
|
import struct
|
||
|
|
import sys
|
||
|
|
import pty
|
||
|
|
import tty
|
||
|
|
import termios
|
||
|
|
import shlex
|
||
|
|
import signal
|
||
|
|
import select
|
||
|
|
import pyte
|
||
|
|
import time
|
||
|
|
|
||
|
|
class Terminal:
|
||
|
|
def __init__(self, columns, lines, p_in):
|
||
|
|
self.screen = pyte.HistoryScreen(columns, lines)
|
||
|
|
self.screen.set_mode(pyte.modes.LNM)
|
||
|
|
self.screen.write_process_input = \
|
||
|
|
lambda data: p_in.write(data.encode())
|
||
|
|
self.stream = pyte.ByteStream()
|
||
|
|
self.stream.attach(self.screen)
|
||
|
|
def feed(self, data):
|
||
|
|
self.stream.feed(data)
|
||
|
|
def dump(self):
|
||
|
|
cursor = self.screen.cursor
|
||
|
|
lines = []
|
||
|
|
for y in self.screen.dirty:
|
||
|
|
line = self.screen.buffer[y]
|
||
|
|
data = [(char.data, char.reverse, char.fg, char.bg)
|
||
|
|
for char in (line[x] for x in range(self.screen.columns))]
|
||
|
|
lines.append((y, data))
|
||
|
|
self.screen.dirty.clear()
|
||
|
|
return {"c": (cursor.x, cursor.y), "lines": lines}
|
||
|
|
|
||
|
|
|
||
|
|
def open_terminal(command="bash", columns=80, lines=24):
|
||
|
|
p_pid, master_fd = pty.fork()
|
||
|
|
if p_pid == 0: # Child.
|
||
|
|
argv = shlex.split(command)
|
||
|
|
env = os.environ.copy()
|
||
|
|
env["TERM"] = 'vt100'
|
||
|
|
os.execvpe(argv[0], argv, env)
|
||
|
|
# File-like object for I/O with the child process aka command.
|
||
|
|
p_out = os.fdopen(master_fd, "w+b", 0)
|
||
|
|
return Terminal(columns, lines, p_out), p_pid, p_out
|
||
|
|
|
||
|
|
def HandleTerminal():
|
||
|
|
debug = False
|
||
|
|
running = True
|
||
|
|
try:
|
||
|
|
old_attr = termios.tcgetattr(sys.stdin)
|
||
|
|
tty.setraw(0)
|
||
|
|
terminal, p_pid, p_out = open_terminal()
|
||
|
|
std_out = os.fdopen(sys.stdout.fileno(), "w+b", 0)
|
||
|
|
while running:
|
||
|
|
r, w, x = select.select([sys.stdin, p_out],[],[])
|
||
|
|
if r == []:
|
||
|
|
continue
|
||
|
|
if p_out in r:
|
||
|
|
if debug:
|
||
|
|
print('pre p_out')
|
||
|
|
try:
|
||
|
|
msgBytes = read_all(p_out.fileno())
|
||
|
|
except (EOFError, OSError):
|
||
|
|
running = False
|
||
|
|
break
|
||
|
|
terminal.feed(msgBytes)
|
||
|
|
os.write(sys.stdout.fileno(), msgBytes)
|
||
|
|
if debug:
|
||
|
|
print('after p_out')
|
||
|
|
if sys.stdin in r:
|
||
|
|
if debug:
|
||
|
|
print('pre stdin')
|
||
|
|
try:
|
||
|
|
msgBytes = read_all(sys.stdin.fileno())
|
||
|
|
except (EOFError, OSError):
|
||
|
|
running = False
|
||
|
|
break
|
||
|
|
terminal.feed(msgBytes)
|
||
|
|
os.write(p_out.fileno(), msgBytes)
|
||
|
|
if debug:
|
||
|
|
print('after stdin')
|
||
|
|
except Exception as e: # Process died?
|
||
|
|
print(e)
|
||
|
|
running = False
|
||
|
|
finally:
|
||
|
|
os.kill(p_pid, signal.SIGTERM)
|
||
|
|
p_out.close()
|
||
|
|
termios.tcsetattr(sys.stdin, termios.TCSADRAIN, old_attr)
|
||
|
|
sys.exit(0)
|
||
|
|
|
||
|
|
def get_terminal_size(fd):
|
||
|
|
s = struct.pack('HHHH', 0, 0, 0, 0)
|
||
|
|
rows, cols, _, _ = struct.unpack('HHHH', fcntl.ioctl(fd, termios.TIOCGWINSZ, s))
|
||
|
|
return rows, cols
|
||
|
|
|
||
|
|
def resize_terminal(fd):
|
||
|
|
s = struct.pack('HHHH', 0, 0, 0, 0)
|
||
|
|
s = fcntl.ioctl(0, termios.TIOCGWINSZ, s)
|
||
|
|
fcntl.ioctl(fd, termios.TIOCSWINSZ, s)
|
||
|
|
rows, cols, _, _ = struct.unpack('hhhh', s)
|
||
|
|
return rows, cols
|
||
|
|
|
||
|
|
def read_all(fd):
|
||
|
|
bytes = os.read(fd, 65536)
|
||
|
|
if bytes == b'':
|
||
|
|
raise EOFError
|
||
|
|
while has_more(fd):
|
||
|
|
data = os.read(fd, 65536)
|
||
|
|
if data == b'':
|
||
|
|
raise EOFError
|
||
|
|
bytes += data
|
||
|
|
return bytes
|
||
|
|
|
||
|
|
def has_more(fd):
|
||
|
|
r, w, e = select.select([fd], [], [], 0)
|
||
|
|
return (fd in r)
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
HandleTerminal()
|