59 lines
1.5 KiB
Python
59 lines
1.5 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2019 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Helpers/wrappers for the subprocess module for migration to python3."""
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from __future__ import print_function
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import subprocess
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def CheckCommand(cmd):
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"""Executes the command using Popen()."""
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cmd_obj = subprocess.Popen(
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cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, encoding='UTF-8')
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stdout, _ = cmd_obj.communicate()
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if cmd_obj.returncode:
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print(stdout)
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raise subprocess.CalledProcessError(cmd_obj.returncode, cmd)
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def check_output(cmd, cwd=None):
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"""Wrapper for pre-python3 subprocess.check_output()."""
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return subprocess.check_output(cmd, encoding='UTF-8', cwd=cwd)
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def check_call(cmd, cwd=None):
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"""Wrapper for pre-python3 subprocess.check_call()."""
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subprocess.check_call(cmd, encoding='UTF-8', cwd=cwd)
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# FIXME: CTRL+C does not work when executing a command inside the chroot via
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# `cros_sdk`.
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def ChrootRunCommand(chroot_path, cmd, verbose=False):
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"""Runs the command inside the chroot."""
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exec_chroot_cmd = ['cros_sdk', '--']
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exec_chroot_cmd.extend(cmd)
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return ExecCommandAndCaptureOutput(
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exec_chroot_cmd, cwd=chroot_path, verbose=verbose)
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def ExecCommandAndCaptureOutput(cmd, cwd=None, verbose=False):
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"""Executes the command and prints to stdout if possible."""
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out = check_output(cmd, cwd=cwd).rstrip()
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if verbose and out:
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print(out)
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return out
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