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# -----------------------------------------------------------------------------
# Utils
import subprocess
def version_to_ints(v):
return [ int(x) for x in v.split('.') ]
def version_lt(x, y):
return version_to_ints(x) < version_to_ints(y)
def version_le(x, y):
return version_to_ints(x) <= version_to_ints(y)
def version_gt(x, y):
return version_to_ints(x) > version_to_ints(y)
def version_ge(x, y):
return version_to_ints(x) >= version_to_ints(y)
def strip_quotes(s):
# Don't wrap commands to subprocess.call/Popen in quotes.
return s.strip('\'"')
def getStdout(cmd_and_args):
# Can't use subprocess.check_output as it's not available in Python 2.6;
# It's also not quite the same as check_output, since we also verify that
# no stderr was produced
p = subprocess.Popen([strip_quotes(cmd_and_args[0])] + cmd_and_args[1:],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
(stdout, stderr) = p.communicate()
r = p.wait()
if r != 0:
raise Exception("Command failed: " + str(cmd_and_args))
if stderr != '':
raise Exception("stderr from command: " + str(cmd_and_args))
return stdout
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