mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 04:23:46 +00:00
ac3fde9394
Syntax for exception handling is a little more strict in python 3.x. Convert all uses to a form accepted by both python 2.x & python 3.x. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Simon Glass <sjg@chromium.org>
124 lines
4.2 KiB
Python
124 lines
4.2 KiB
Python
# Copyright (c) 2011 The Chromium OS Authors.
|
|
#
|
|
# SPDX-License-Identifier: GPL-2.0+
|
|
#
|
|
|
|
import os
|
|
import cros_subprocess
|
|
|
|
"""Shell command ease-ups for Python."""
|
|
|
|
class CommandResult:
|
|
"""A class which captures the result of executing a command.
|
|
|
|
Members:
|
|
stdout: stdout obtained from command, as a string
|
|
stderr: stderr obtained from command, as a string
|
|
return_code: Return code from command
|
|
exception: Exception received, or None if all ok
|
|
"""
|
|
def __init__(self):
|
|
self.stdout = None
|
|
self.stderr = None
|
|
self.combined = None
|
|
self.return_code = None
|
|
self.exception = None
|
|
|
|
def __init__(self, stdout='', stderr='', combined='', return_code=0,
|
|
exception=None):
|
|
self.stdout = stdout
|
|
self.stderr = stderr
|
|
self.combined = combined
|
|
self.return_code = return_code
|
|
self.exception = exception
|
|
|
|
|
|
# This permits interception of RunPipe for test purposes. If it is set to
|
|
# a function, then that function is called with the pipe list being
|
|
# executed. Otherwise, it is assumed to be a CommandResult object, and is
|
|
# returned as the result for every RunPipe() call.
|
|
# When this value is None, commands are executed as normal.
|
|
test_result = None
|
|
|
|
def RunPipe(pipe_list, infile=None, outfile=None,
|
|
capture=False, capture_stderr=False, oneline=False,
|
|
raise_on_error=True, cwd=None, **kwargs):
|
|
"""
|
|
Perform a command pipeline, with optional input/output filenames.
|
|
|
|
Args:
|
|
pipe_list: List of command lines to execute. Each command line is
|
|
piped into the next, and is itself a list of strings. For
|
|
example [ ['ls', '.git'] ['wc'] ] will pipe the output of
|
|
'ls .git' into 'wc'.
|
|
infile: File to provide stdin to the pipeline
|
|
outfile: File to store stdout
|
|
capture: True to capture output
|
|
capture_stderr: True to capture stderr
|
|
oneline: True to strip newline chars from output
|
|
kwargs: Additional keyword arguments to cros_subprocess.Popen()
|
|
Returns:
|
|
CommandResult object
|
|
"""
|
|
if test_result:
|
|
if hasattr(test_result, '__call__'):
|
|
return test_result(pipe_list=pipe_list)
|
|
return test_result
|
|
result = CommandResult()
|
|
last_pipe = None
|
|
pipeline = list(pipe_list)
|
|
user_pipestr = '|'.join([' '.join(pipe) for pipe in pipe_list])
|
|
kwargs['stdout'] = None
|
|
kwargs['stderr'] = None
|
|
while pipeline:
|
|
cmd = pipeline.pop(0)
|
|
if last_pipe is not None:
|
|
kwargs['stdin'] = last_pipe.stdout
|
|
elif infile:
|
|
kwargs['stdin'] = open(infile, 'rb')
|
|
if pipeline or capture:
|
|
kwargs['stdout'] = cros_subprocess.PIPE
|
|
elif outfile:
|
|
kwargs['stdout'] = open(outfile, 'wb')
|
|
if capture_stderr:
|
|
kwargs['stderr'] = cros_subprocess.PIPE
|
|
|
|
try:
|
|
last_pipe = cros_subprocess.Popen(cmd, cwd=cwd, **kwargs)
|
|
except Exception as err:
|
|
result.exception = err
|
|
if raise_on_error:
|
|
raise Exception("Error running '%s': %s" % (user_pipestr, str))
|
|
result.return_code = 255
|
|
return result
|
|
|
|
if capture:
|
|
result.stdout, result.stderr, result.combined = (
|
|
last_pipe.CommunicateFilter(None))
|
|
if result.stdout and oneline:
|
|
result.output = result.stdout.rstrip('\r\n')
|
|
result.return_code = last_pipe.wait()
|
|
else:
|
|
result.return_code = os.waitpid(last_pipe.pid, 0)[1]
|
|
if raise_on_error and result.return_code:
|
|
raise Exception("Error running '%s'" % user_pipestr)
|
|
return result
|
|
|
|
def Output(*cmd, **kwargs):
|
|
raise_on_error = kwargs.get('raise_on_error', True)
|
|
return RunPipe([cmd], capture=True, raise_on_error=raise_on_error).stdout
|
|
|
|
def OutputOneLine(*cmd, **kwargs):
|
|
raise_on_error = kwargs.pop('raise_on_error', True)
|
|
return (RunPipe([cmd], capture=True, oneline=True,
|
|
raise_on_error=raise_on_error,
|
|
**kwargs).stdout.strip())
|
|
|
|
def Run(*cmd, **kwargs):
|
|
return RunPipe([cmd], **kwargs).stdout
|
|
|
|
def RunList(cmd):
|
|
return RunPipe([cmd], capture=True).stdout
|
|
|
|
def StopAll():
|
|
cros_subprocess.stay_alive = False
|