'''
Created on 17.07.2011

@author: kca
'''

import logging, sys
from futile.logging import get_logger
from subprocess import check_output as _check_output, check_call as _check_call, CalledProcessError, STDOUT, Popen

try:
	from subprocces import SubprocessError, TimeoutExpired
except ImportError:
	class SubprocessError(Exception):
		pass
	
	class TimeoutExpired(SubprocessError):
		pass

def _pre_call(args):
	#needed for chroot safety
	import encodings.string_escape
	
	cmd = ' '.join(args)
	get_logger().debug("running %s" % (cmd, ))
	return cmd
	

def check_output(args, stdin=None, stderr=STDOUT, shell=False, cwd=None, env=None,  *popenargs, **popenkw):
	cmd = _pre_call(args)
	
	try:
		return _check_output(args, stdin=stdin, stderr=stderr, shell=shell, cwd=cwd, env=env, *popenargs, **popenkw)
	except CalledProcessError as e:
		get_logger().debug("Command %s returned exit code %s. This is the programs output:\n%s<<EOF>>" % (cmd, e.returncode, e.output))
		raise
	
def check_call(args, stdin=None, stdout=None, stderr=None, shell=False, cwd=None, env=None,  *popenargs, **popenkw):
	cmd = _pre_call(args)
	
	try:
		return _check_call(args, stdin=stdin, stdout=stdout, stderr=stderr, shell=shell, cwd=cwd, env=env, *popenargs, **popenkw)
	except CalledProcessError as e:
		get_logger().debug("Command %s returned exit code %s." % (cmd, e.returncode))
		raise