summaryrefslogtreecommitdiffstats
path: root/qemu/roms/u-boot/tools/patman/command.py
diff options
context:
space:
mode:
authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/tools/patman/command.py
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (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.py101
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