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author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/tools/patman/command.py | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/tools/patman/command.py')
-rw-r--r-- | qemu/roms/u-boot/tools/patman/command.py | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/tools/patman/command.py b/qemu/roms/u-boot/tools/patman/command.py new file mode 100644 index 000000000..449d3d0e0 --- /dev/null +++ b/qemu/roms/u-boot/tools/patman/command.py @@ -0,0 +1,101 @@ +# 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.return_code = None + self.exception = 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 + """ + result = CommandResult() + last_pipe = None + pipeline = list(pipe_list) + user_pipestr = '|'.join([' '.join(pipe) for pipe in pipe_list]) + 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, 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): + return RunPipe([cmd], capture=True, raise_on_error=False).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 |