forked from OSchip/llvm-project
104 lines
3.0 KiB
Python
Executable File
104 lines
3.0 KiB
Python
Executable File
#!/usr/bin/env python
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"""This spawns a sub-shell (bash) and gives the user interactive control. The
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entire shell session is logged to a file called script.log. This behaves much
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like the classic BSD command 'script'.
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./script.py [-a] [-c command] {logfilename}
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logfilename : This is the name of the log file. Default is script.log.
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-a : Append to log file. Default is to overwrite log file.
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-c : spawn command. Default is to spawn the sh shell.
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Example:
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This will start a bash shell and append to the log named my_session.log:
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./script.py -a -c bash my_session.log
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"""
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import os, sys, time, getopt
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import signal, fcntl, termios, struct
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import traceback
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import pexpect
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global_pexpect_instance = None # Used by signal handler
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def exit_with_usage():
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print globals()['__doc__']
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os._exit(1)
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def main():
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######################################################################
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# Parse the options, arguments, get ready, etc.
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######################################################################
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try:
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optlist, args = getopt.getopt(sys.argv[1:], 'h?ac:', ['help','h','?'])
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except Exception, e:
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print str(e)
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exit_with_usage()
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options = dict(optlist)
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if len(args) > 1:
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exit_with_usage()
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if [elem for elem in options if elem in ['-h','--h','-?','--?','--help']]:
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print "Help:"
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exit_with_usage()
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if len(args) == 1:
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script_filename = args[0]
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else:
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script_filename = "script.log"
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if '-a' in options:
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fout = file (script_filename, "ab")
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else:
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fout = file (script_filename, "wb")
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if '-c' in options:
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command = options['-c']
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else:
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command = "sh"
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# Begin log with date/time in the form CCCCyymm.hhmmss
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fout.write ('# %4d%02d%02d.%02d%02d%02d \n' % time.localtime()[:-3])
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######################################################################
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# Start the interactive session
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######################################################################
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p = pexpect.spawn(command)
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p.logfile = fout
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global global_pexpect_instance
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global_pexpect_instance = p
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signal.signal(signal.SIGWINCH, sigwinch_passthrough)
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print "Script recording started. Type ^] (ASCII 29) to escape from the script shell."
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p.interact(chr(29))
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fout.close()
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return 0
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def sigwinch_passthrough (sig, data):
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# Check for buggy platforms (see pexpect.setwinsize()).
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if 'TIOCGWINSZ' in dir(termios):
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TIOCGWINSZ = termios.TIOCGWINSZ
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else:
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TIOCGWINSZ = 1074295912 # assume
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s = struct.pack ("HHHH", 0, 0, 0, 0)
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a = struct.unpack ('HHHH', fcntl.ioctl(sys.stdout.fileno(), TIOCGWINSZ , s))
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global global_pexpect_instance
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global_pexpect_instance.setwinsize(a[0],a[1])
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if __name__ == "__main__":
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try:
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main()
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except SystemExit, e:
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raise e
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except Exception, e:
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print "ERROR"
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print str(e)
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traceback.print_exc()
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os._exit(1)
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