def _check_output_device(filename, monochrome):
import template
try:
fd = os.open(filename, os.O_WRONLY | os.O_CREAT | os.O_NONBLOCK)
except OSError:
e = sys.exc_info()[1]
logging.exception(e)
logging.exception("Connection closed.")
print("Cannot access output file or device.\n(%s)" % filename)
return False
try:
if os.isatty(fd):
if not os.path.exists(filename):
print("The output device %s is not found." % filename)
return False
if filename == os.ttyname(0):
print ("The output device %s is busy (current TTY). "
"Please specify another TTY device.") % filename
return False
if monochrome:
template.disable_color()
else:
template.enable_color()
else:
template.disable_color()
finally:
os.close(fd)
return True
logging.exception(e)
logging.exception("Connection closed.")
print("Cannot access output file or device.\n(%s)" % options.output)
return
try:
if os.isatty(fd):
if not os.path.exists(options.output):
print("The output device %s is not found." % options.output)
return
if options.output == os.ttyname(0):
print ("The output device %s is busy (current TTY). "
"Please specify another TTY device.") % options.output
return
if options.monochrome:
template.disable_color()
else:
template.enable_color()
else:
template.disable_color()
finally:
os.close(fd)
tty = tff.DefaultPTY(term, lang, command, sys.stdin)
try:
tty.fitsize()
controller = controller.ActionController(tty)
tracer = trace.TraceHandler(options.output,
termenc,
controller)
def main():
''' entry point function for command line program '''
import sys
import os
import optparse
import logging
# parse options and arguments
usage = 'usage: %prog [options] command'
parser = optparse.OptionParser(usage=usage)
parser.add_option('-o', '--output', dest='output',
default='/dev/null',
help='specify output device or file')
parser.add_option('-b', '--break', dest='breakstart',
action="store_true", default=False,
help='"break" the program at the startup time')
parser.add_option('-m', '--monochrome', dest='monochrome',
action="store_true", default=False,
help='don\'t use color in output terminal')
parser.add_option('--version', dest='version',
action="store_true", default=False,
help='show version')
(options, args) = parser.parse_args()
if options.version:
_printver()
return
# retrive starting command
if len(args) == 1:
command = args[0]
elif len(args) > 1:
command = " ".join(args)
elif os.getenv('SHELL'):
command = os.getenv('SHELL')
else:
command = '/bin/sh'
# retrive TERM setting
if os.getenv('TERM'):
term = os.getenv('TERM')
else:
term = 'xterm'
# retrive LANG setting
if os.getenv('LANG'):
lang = os.getenv('LANG')
else:
import locale
lang = '%s.%s' % locale.getdefaultlocale()
# retrive terminal encoding setting
import locale
language, encoding = locale.getdefaultlocale()
termenc = encoding
if not termenc:
termenc = "UTF-8"
# fix for cygwin environment, such as utf_8_cjknarrow
if termenc.lower().startswith("utf_8_"):
termenc = "UTF-8"
rcdir = os.path.join(os.getenv("HOME"), ".trachet")
logdir = os.path.join(rcdir, "log")
if not os.path.exists(logdir):
os.makedirs(logdir)
logfile = os.path.join(logdir, "log.txt")
logging.basicConfig(filename=logfile, filemode="w")
from tff import tff
import input
import output
import controller
import trace
import template
try:
fd = os.open(options.output, os.O_WRONLY|os.O_CREAT|os.O_NONBLOCK)
except:
logging.exception("Connection closed.")
print "Cannot access output file or device: %s." % options.output
return
try:
if os.isatty(fd):
if not os.path.exists(options.output):
print "The output device %s is not found." % options.output
return
if options.output == os.ttyname(0):
print ("The output device %s is busy (current TTY). "
"Please specify another TTY device.") % options.output
return
if options.monochrome:
template.disable_color()
else:
template.enable_color()
else:
template.disable_color()
finally:
os.close(fd)
tty = tff.DefaultPTY(term, lang, command, sys.stdin)
try:
tty.fitsize()
controller = controller.ActionController(tty)
tracer = trace.TraceHandler(options.output,
termenc,
controller)
if options.breakstart:
controller.set_break()
session = tff.Session(tty)
session.start(stdin=sys.stdin,
stdout=sys.stdout,
termenc=termenc,
inputhandler=input.InputHandler(controller, tracer),
outputhandler=output.OutputHandler(controller, tracer))
except IOError:
logging.exception("Connection closed.")
print "connection closed."
except:
logging.exception("Aborted by exception.")
print ("trachet aborted by an uncaught exception."
" see $HOME/.trachet/log/log.txt.")
finally:
try:
tty.restore_term()
except:
pass
