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git://git.yoctoproject.org/poky.git
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f027576193
fix below problem: pydevshell raises exception when maximize the python shell window. when click maximize, rlist of select return ready object, but the pty.read is None, so throw exception of 'NoneType' object has no attribute 'decode', change to only decode when readdata is valid. [YOCTO #11875] (From OE-Core rev: d598f8d48e9b094af99effa7471d613b16ffa817) Signed-off-by: Changqing Li <changqing.li@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
100 lines
3.0 KiB
Python
Executable File
100 lines
3.0 KiB
Python
Executable File
#!/usr/bin/env python3
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import os
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import sys
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import time
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import select
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import fcntl
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import termios
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import readline
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import signal
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def nonblockingfd(fd):
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fcntl.fcntl(fd, fcntl.F_SETFL, fcntl.fcntl(fd, fcntl.F_GETFL) | os.O_NONBLOCK)
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def echonocbreak(fd):
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old = termios.tcgetattr(fd)
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old[3] = old[3] | termios.ECHO | termios.ICANON
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termios.tcsetattr(fd, termios.TCSADRAIN, old)
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def cbreaknoecho(fd):
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old = termios.tcgetattr(fd)
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old[3] = old[3] &~ termios.ECHO &~ termios.ICANON
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termios.tcsetattr(fd, termios.TCSADRAIN, old)
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if len(sys.argv) != 3 or sys.argv[1] in ('-h', '--help'):
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print('oepydevshell-internal.py: error: the following arguments are required: pty, pid\n'
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'Usage: oepydevshell-internal.py pty pid\n\n'
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'OpenEmbedded oepydevshell-internal.py - internal script called from meta/classes/devshell.bbclass\n\n'
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'arguments:\n'
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' pty pty device name\n'
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' pid parent process id\n\n'
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'options:\n'
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' -h, --help show this help message and exit\n')
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sys.exit(2)
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pty = open(sys.argv[1], "w+b", 0)
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parent = int(sys.argv[2])
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nonblockingfd(pty)
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nonblockingfd(sys.stdin)
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histfile = os.path.expanduser("~/.oedevpyshell-history")
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readline.parse_and_bind("tab: complete")
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try:
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readline.read_history_file(histfile)
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except IOError:
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pass
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try:
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i = ""
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o = ""
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# Need cbreak/noecho whilst in select so we trigger on any keypress
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cbreaknoecho(sys.stdin.fileno())
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# Send our PID to the other end so they can kill us.
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pty.write(str(os.getpid()).encode('utf-8') + b"\n")
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while True:
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try:
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writers = []
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if i:
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writers.append(sys.stdout)
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(ready, _, _) = select.select([pty, sys.stdin], writers , [], 0)
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try:
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if pty in ready:
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readdata = pty.read()
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if readdata:
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i = i + readdata.decode('utf-8')
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if i:
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# Write a page at a time to avoid overflowing output
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# d.keys() is a good way to do that
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sys.stdout.write(i[:4096])
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sys.stdout.flush()
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i = i[4096:]
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if sys.stdin in ready:
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echonocbreak(sys.stdin.fileno())
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o = input().encode('utf-8')
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cbreaknoecho(sys.stdin.fileno())
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pty.write(o + b"\n")
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except (IOError, OSError) as e:
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if e.errno == 11:
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continue
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if e.errno == 5:
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sys.exit(0)
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raise
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except EOFError:
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sys.exit(0)
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except KeyboardInterrupt:
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os.kill(parent, signal.SIGINT)
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except SystemExit:
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pass
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except Exception as e:
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import traceback
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print("Exception in oepydehshell-internal: " + str(e))
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traceback.print_exc()
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time.sleep(5)
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finally:
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readline.write_history_file(histfile)
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