[android] Split top-level scripts and libraries from build/android.

- Top-level scripts are kept under build/android.
- Utility libraries have been moved to build/android/pylib.
- Fixes all imports and headers.

This is in preparation for landing the "instrumentation" (java-based) tests,
which will reuse several of these components.

BUG=
TEST=existing android tests


Review URL: https://chromiumcodereview.appspot.com/10693110

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@145653 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 50 insertions, 0 deletions

diff --git a/build/android/pylib/cmd_helper.py b/build/android/pylib/cmd_helper.py
new file mode 100755
index 0000000..8b50130
--- /dev/null
+++ b/build/android/pylib/cmd_helper.py
@@ -0,0 +1,50 @@
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""A wrapper for subprocess to make calling shell commands easier."""
+
+
+import logging
+import subprocess
+
+
+def RunCmd(args, cwd=None):
+  """Opens a subprocess to execute a program and returns its return value.
+
+  Args:
+    args: A string or a sequence of program arguments. The program to execute is
+      the string or the first item in the args sequence.
+    cwd: If not None, the subprocess's current directory will be changed to
+      |cwd| before it's executed.
+
+  Returns:
+    Return code from the command execution.
+  """
+  logging.info(str(args) + ' ' + (cwd or ''))
+  p = subprocess.Popen(args=args, cwd=cwd)
+  return p.wait()
+
+
+def GetCmdOutput(args, cwd=None, shell=False):
+  """Open a subprocess to execute a program and returns its output.
+
+  Args:
+    args: A string or a sequence of program arguments. The program to execute is
+      the string or the first item in the args sequence.
+    cwd: If not None, the subprocess's current directory will be changed to
+      |cwd| before it's executed.
+    shell: Whether to execute args as a shell command.
+
+  Returns:
+    Captures and returns the command's stdout.
+    Prints the command's stderr to logger (which defaults to stdout).
+  """
+  logging.info(str(args) + ' ' + (cwd or ''))
+  p = subprocess.Popen(args=args, cwd=cwd, stdout=subprocess.PIPE,
+                       stderr=subprocess.PIPE, shell=shell)
+  stdout, stderr = p.communicate()
+  if stderr:
+    logging.critical(stderr)
+  logging.info(stdout[:4096])  # Truncate output longer than 4k.
+  return stdout