def _enterRawMode():
global _inRawMode, _savedMode
if _inRawMode:
return
fd = sys.stdin.fileno()
try:
old = tty.tcgetattr(fd)
new = old[:]
except:
log.msg('not a typewriter!')
else:
# iflage
new[0] = new[0] | tty.IGNPAR
new[0] = new[0] & ~(tty.ISTRIP | tty.INLCR | tty.IGNCR | tty.ICRNL |
tty.IXON | tty.IXANY | tty.IXOFF)
if hasattr(tty, 'IUCLC'):
new[0] = new[0] & ~tty.IUCLC
# lflag
new[3] = new[3] & ~(tty.ISIG | tty.ICANON | tty.ECHO | tty.ECHO |
tty.ECHOE | tty.ECHOK | tty.ECHONL)
if hasattr(tty, 'IEXTEN'):
new[3] = new[3] & ~tty.IEXTEN
#oflag
new[1] = new[1] & ~tty.OPOST
new[6][tty.VMIN] = 1
new[6][tty.VTIME] = 0
_savedMode = old
tty.tcsetattr(fd, tty.TCSANOW, new)
#tty.setraw(fd)
_inRawMode = 1
python类ECHO的实例源码
def _writeHack(self, data):
"""
Hack to send ignore messages when we aren't echoing.
"""
if self.pty is not None:
attr = tty.tcgetattr(self.pty.fileno())[3]
if not attr & tty.ECHO and attr & tty.ICANON: # no echo
self.avatar.conn.transport.sendIgnore('\x00'*(8+len(data)))
self.oldWrite(data)
def __init__(self, infile):
if not infile.isatty():
raise NotTTYException()
self.file = infile
# prepare for getch
self.save_attr = tty.tcgetattr(self.file)
newattr = self.save_attr[:]
newattr[3] &= ~tty.ECHO & ~tty.ICANON
tty.tcsetattr(self.file, tty.TCSANOW, newattr)
def _enterRawMode():
global _inRawMode, _savedMode
if _inRawMode:
return
fd = sys.stdin.fileno()
try:
old = tty.tcgetattr(fd)
new = old[:]
except:
log.msg('not a typewriter!')
else:
# iflage
new[0] = new[0] | tty.IGNPAR
new[0] = new[0] & ~(tty.ISTRIP | tty.INLCR | tty.IGNCR | tty.ICRNL |
tty.IXON | tty.IXANY | tty.IXOFF)
if hasattr(tty, 'IUCLC'):
new[0] = new[0] & ~tty.IUCLC
# lflag
new[3] = new[3] & ~(tty.ISIG | tty.ICANON | tty.ECHO | tty.ECHO |
tty.ECHOE | tty.ECHOK | tty.ECHONL)
if hasattr(tty, 'IEXTEN'):
new[3] = new[3] & ~tty.IEXTEN
#oflag
new[1] = new[1] & ~tty.OPOST
new[6][tty.VMIN] = 1
new[6][tty.VTIME] = 0
_savedMode = old
tty.tcsetattr(fd, tty.TCSANOW, new)
#tty.setraw(fd)
_inRawMode = 1
def _writeHack(self, data):
"""
Hack to send ignore messages when we aren't echoing.
"""
if self.pty is not None:
attr = tty.tcgetattr(self.pty.fileno())[3]
if not attr & tty.ECHO and attr & tty.ICANON: # no echo
self.avatar.conn.transport.sendIgnore('\x00'*(8+len(data)))
self.oldWrite(data)
def _enterRawMode():
global _inRawMode, _savedRawMode
if _inRawMode:
return
fd = sys.stdin.fileno()
try:
old = tty.tcgetattr(fd)
new = old[:]
except:
log.msg('not a typewriter!')
else:
# iflage
new[0] = new[0] | tty.IGNPAR
new[0] = new[0] & ~(tty.ISTRIP | tty.INLCR | tty.IGNCR | tty.ICRNL |
tty.IXON | tty.IXANY | tty.IXOFF)
if hasattr(tty, 'IUCLC'):
new[0] = new[0] & ~tty.IUCLC
# lflag
new[3] = new[3] & ~(tty.ISIG | tty.ICANON | tty.ECHO | tty.ECHO |
tty.ECHOE | tty.ECHOK | tty.ECHONL)
if hasattr(tty, 'IEXTEN'):
new[3] = new[3] & ~tty.IEXTEN
#oflag
new[1] = new[1] & ~tty.OPOST
new[6][tty.VMIN] = 1
new[6][tty.VTIME] = 0
_savedRawMode = old
tty.tcsetattr(fd, tty.TCSANOW, new)
#tty.setraw(fd)
_inRawMode = 1
def _writeHack(self, data):
"""
Hack to send ignore messages when we aren't echoing.
"""
if self.pty is not None:
attr = tty.tcgetattr(self.pty.fileno())[3]
if not attr & tty.ECHO and attr & tty.ICANON: # No echo.
self.avatar.conn.transport.sendIgnore('\x00'*(8+len(data)))
self.oldWrite(data)
def open(self, command, env={}):
""" Create subprocess using forkpty() """
# parse command
command_arr = shlex.split(command)
executable = command_arr[0]
args = command_arr
# try to fork a new pty
try:
self.pid, self.fd = pty.fork()
except:
return False
# child proc, replace with command after altering terminal attributes
if self.pid == 0:
# set requested environment variables
for k in env.keys():
os.environ[k] = env[k]
# set tty attributes
try:
attrs = tty.tcgetattr(1)
attrs[0] = attrs[0] ^ tty.IGNBRK
attrs[0] = attrs[0] | tty.BRKINT | tty.IXANY | tty.IMAXBEL
attrs[2] = attrs[2] | tty.HUPCL
attrs[3] = attrs[3] | tty.ICANON | tty.ECHO | tty.ISIG | tty.ECHOKE
attrs[6][tty.VMIN] = 1
attrs[6][tty.VTIME] = 0
tty.tcsetattr(1, tty.TCSANOW, attrs)
except:
pass
# replace this process with the subprocess
os.execvp(executable, args)
# else master, do nothing
else:
pass
