def _read(self, n):
"""Read n bytes from image display and return as string
Raises IOError on failure. If a tkinter widget exists, runs
a Tk mainloop while waiting for data so that the Tk widgets
remain responsive.
"""
try:
return irafutils.tkread(self._fdin, n)
except (EOFError, IOError):
raise IOError("Error reading from image display")
def _read(self, n):
"""Read n bytes from image display and return as string
Raises IOError on failure. If a Tkinter widget exists, runs
a Tk mainloop while waiting for data so that the Tk widgets
remain responsive.
"""
try:
return irafutils.tkread(self._fdin, n)
except (EOFError, IOError):
raise IOError("Error reading from image display")
def getSingleTTYChar(): # return type str in all Python versions
"""Returns None if Control-C is typed or any other exception occurs"""
# Ripped off from python FAQ
fd = sys.stdin.fileno()
old = termios.tcgetattr(fd)
new = termios.tcgetattr(fd)
new[3] = new[3] & ~(termios.ICANON | termios.ECHO | termios.ISIG)
new[6][termios.VMIN] = 1
new[6][termios.VTIME] = 0
termios.tcsetattr(fd, termios.TCSANOW, new)
c = None
try:
# allow Tk mainloop to run while waiting...
# vanilla version would be c = os.read(fd, 1)
if capable.OF_GRAPHICS:
c = irafutils.tkread(fd, 1)
else:
c = os.read(fd, 1).decode(errors='replace')
finally:
termios.tcsetattr(fd, termios.TCSAFLUSH, old)
return c
def getSingleTTYChar(): # return type str in all Python versions
"""Returns None if Control-C is typed or any other exception occurs"""
# Ripped off from python FAQ
fd = sys.stdin.fileno()
old = termios.tcgetattr(fd)
new = termios.tcgetattr(fd)
new[3] = new[3] & ~(TERMIOS.ICANON | TERMIOS.ECHO | TERMIOS.ISIG)
new[6][TERMIOS.VMIN] = 1
new[6][TERMIOS.VTIME] = 0
termios.tcsetattr(fd, TERMIOS.TCSANOW, new)
c = None
try:
# allow Tk mainloop to run while waiting...
# vanilla version would be c = os.read(fd, 1)
if capable.OF_GRAPHICS:
c = irafutils.tkread(fd, 1)
else:
c = os.read(fd, 1)
if for2to3.PY3K: c = c.decode('ascii')
finally:
termios.tcsetattr(fd, TERMIOS.TCSAFLUSH, old)
return c
