media/webrtc/trunk/build/android/pylib/cmd_helper.py@8bccb770b82d
media/webrtc/trunk/build/android/pylib/cmd_helper.py
Wed, 31 Dec 2014 13:27:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 13:27:57 +0100
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
- permissions
- -rw-r--r--
Ignore runtime configuration files generated during quality assurance.
1 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file.
5 """A wrapper for subprocess to make calling shell commands easier."""
8 import logging
9 import subprocess
12 def RunCmd(args, cwd=None):
13 """Opens a subprocess to execute a program and returns its return value.
15 Args:
16 args: A string or a sequence of program arguments. The program to execute is
17 the string or the first item in the args sequence.
18 cwd: If not None, the subprocess's current directory will be changed to
19 |cwd| before it's executed.
21 Returns:
22 Return code from the command execution.
23 """
24 logging.info(str(args) + ' ' + (cwd or ''))
25 p = subprocess.Popen(args=args, cwd=cwd)
26 return p.wait()
29 def GetCmdOutput(args, cwd=None, shell=False):
30 """Open a subprocess to execute a program and returns its output.
32 Args:
33 args: A string or a sequence of program arguments. The program to execute is
34 the string or the first item in the args sequence.
35 cwd: If not None, the subprocess's current directory will be changed to
36 |cwd| before it's executed.
37 shell: Whether to execute args as a shell command.
39 Returns:
40 Captures and returns the command's stdout.
41 Prints the command's stderr to logger (which defaults to stdout).
42 """
43 logging.info(str(args) + ' ' + (cwd or ''))
44 p = subprocess.Popen(args=args, cwd=cwd, stdout=subprocess.PIPE,
45 stderr=subprocess.PIPE, shell=shell)
46 stdout, stderr = p.communicate()
47 if stderr:
48 logging.critical(stderr)
49 logging.info(stdout[:4096]) # Truncate output longer than 4k.
50 return stdout
