abf-console-client-src/abf/console/misc.py
2012-09-18 13:26:44 +04:00

136 lines
No EOL
4 KiB
Python

import os
import sys
import time
import select
import subprocess
import fcntl
def mkdirs(path):
''' the equivalent of mkdir -p path'''
if os.path.exists(path):
return
path = os.path.normpath(path)
items = path.split('/')
p = ''
for item in items:
p += '/' + item
if not os.path.isdir(p):
os.mkdir(p)
def ask_user(prompt, can_be_empty=False, variants=None):
while True:
sys.stdout.write(prompt)
sys.stdout.flush()
res = sys.stdin.readline()
res = res.strip()
if not can_be_empty and not res:
continue
if variants:
if res in variants:
break
else:
continue
break
return res
class CommandTimeoutExpired(Exception):
pass
class ReturnCodeNotZero(Exception):
def __init__(self, message, code):
super(ReturnCodeNotZero, self).__init__(message)
self.code = code
def get_project_name():
try:
output = execute_command(['git', 'remote', 'show', 'origin', '-n'])
for line in output.split('\n'):
if line.startswith(' Fetch URL:'):
project_name = line.split('/')[-1][:-4]
owner_name = line.split('/')[-2]
return (owner_name, project_name)
return None
except ReturnCodeNotZero:
return None
def execute_command(command, log=None, shell=False, cwd=None, timeout=0, raiseExc=True, print_to_stdout=False, exit_on_error=False):
output = ""
start = time.time()
try:
child = None
if log:
log.debug("Executing command: %s" % command)
child = subprocess.Popen(
command,
shell=shell,
bufsize=0, close_fds=True,
stdin=open("/dev/null", "r"),
stdout=subprocess.PIPE,
stderr=subprocess.PIPE
)
# use select() to poll for output so we dont block
output = logOutput([child.stdout, child.stderr],
start, timeout, print_to_stdout=print_to_stdout)
except:
# kill children if they arent done
if child is not None and child.returncode is None:
os.killpg(child.pid, 9)
try:
if child is not None:
os.waitpid(child.pid, 0)
except:
pass
raise
# wait until child is done, kill it if it passes timeout
niceExit=1
while child.poll() is None:
if (time.time() - start)>timeout and timeout!=0:
niceExit=0
os.killpg(child.pid, 15)
if (time.time() - start)>(timeout+1) and timeout!=0:
niceExit=0
os.killpg(child.pid, 9)
if not niceExit and raiseExc:
raise CommandTimeoutExpired("Timeout(%s) expired for command:\n # %s\n%s" % (timeout, command, output))
if log:
log.debug("Child returncode was: %s" % str(child.returncode))
if child.returncode:
if exit_on_error:
exit(child.returncode)
if raiseExc:
raise ReturnCodeNotZero("Command failed.\nReturn code: %s\nOutput: %s" % (child.returncode, output), child.returncode)
return output
def logOutput(fds, start=0, timeout=0, print_to_stdout=False):
done = 0
output = ''
# set all fds to nonblocking
for fd in fds:
flags = fcntl.fcntl(fd, fcntl.F_GETFL)
if not fd.closed:
fcntl.fcntl(fd, fcntl.F_SETFL, flags| os.O_NONBLOCK)
while not done:
if (time.time() - start)>timeout and timeout!=0:
done = 1
break
i_rdy,o_rdy,e_rdy = select.select(fds,[],[],1)
for s in i_rdy:
# slurp as much input as is ready
string = s.read()
if string == '':
done = 1
continue
else:
if print_to_stdout:
print string
output += string
return output