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# Copyright (c) 2011 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import logging
import subprocess
def RunCmd(args, cwd=None):
"""Opens a subprocess to execute a program and returns its return value.
Args:
args: A string or a sequence of program arguments. The program to execute is
the string or the first item in the args sequence.
cwd: If not None, the subprocess's current directory will be changed to
|cwd| before it's executed.
"""
logging.info(str(args) + ' ' + (cwd or ''))
p = subprocess.Popen(args=args, cwd=cwd)
return p.wait()
def GetCmdOutput(args, cwd=None):
"""Open a subprocess to execute a program and returns its output.
Args:
args: A string or a sequence of program arguments. The program to execute is
the string or the first item in the args sequence.
cwd: If not None, the subprocess's current directory will be changed to
|cwd| before it's executed.
"""
logging.info(str(args) + ' ' + (cwd or ''))
p = subprocess.Popen(args=args, cwd=cwd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout, stderr = p.communicate()
if stderr:
logging.critical(stderr)
logging.info(stdout[:4096]) # Truncate output longer than 4k.
return stdout
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