def callProc(cmd, keepLastNewLine=False):
"""call a process and return stdout, exception with stderr in message.
The cmd is either a list of command and arguments, or pipeline, specified by
a list of lists of commands and arguments."""
stdout = Pipeline.DataReader()
pl = Pipeline.Procline(cmd, stdin="/dev/null", stdout=stdout)
pl.wait()
out = stdout.get()
if (not keepLastNewLine) and (len(out) > 0) and (out[-1] == "\n"):
out = out[0:-1]
return out
def runProc(cmd, stdin="/dev/null", stdout=None, stderr=None, noError=False):
"""run a process, with I/O redirection to specified file paths or open
file objects. None specifies inheriting. If noError is True, then
the exit code is returned rather than generating an error"""
# FIXME: drop noError???
pl = Pipeline.Procline(cmd, stdin=stdin, stdout=stdout, stderr=stderr)
code = 0
try:
pl.wait()
except Pipeline.ProcException, ex:
code = ex.returncode
if not noError:
raise
