#!/usr/bin/env python
#
# Copyright 2012 the V8 project authors. All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above
#       copyright notice, this list of conditions and the following
#       disclaimer in the documentation and/or other materials provided
#       with the distribution.
#     * Neither the name of Google Inc. nor the names of its
#       contributors may be used to endorse or promote products derived
#       from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# This script executes the passed command line on Android device
# using 'adb shell' command. Unfortunately, 'adb shell' always
# returns exit code 0, ignoring the exit code of executed command.
# Since we need to return non-zero exit code if the command failed,
# we augment the passed command line with exit code checking statement
# and output special error string in case of non-zero exit code.
# Then we parse the output of 'adb shell' and look for that error string.

import os
from os.path import join, dirname, abspath
import subprocess
import sys
import tempfile

def Check(output, errors):
  failed = any([s.startswith('/system/bin/sh:') or s.startswith('Error')
                for s in output.split('\n')])
  return 1 if failed else 0

def Execute(cmdline):
  (fd_out, outname) = tempfile.mkstemp()
  (fd_err, errname) = tempfile.mkstemp()
  process = subprocess.Popen(
    args=cmdline,
    shell=True,
    stdout=fd_out,
    stderr=fd_err,
  )
  exit_code = process.wait()
  os.close(fd_out)
  os.close(fd_err)
  output = file(outname).read()
  errors = file(errname).read()
  os.unlink(outname)
  os.unlink(errname)
  sys.stdout.write(output)
  sys.stderr.write(errors)
  return exit_code or Check(output, errors)

def Escape(arg):
  def ShouldEscape():
    for x in arg:
      if not x.isalnum() and x != '-' and x != '_':
        return True
    return False

  return arg if not ShouldEscape() else '"%s"' % (arg.replace('"', '\\"'))

def WriteToTemporaryFile(data):
  (fd, fname) = tempfile.mkstemp()
  os.close(fd)
  tmp_file = open(fname, "w")
  tmp_file.write(data)
  tmp_file.close()
  return fname

def Main():
  if (len(sys.argv) == 1):
    print("Usage: %s <command-to-run-on-device>" % sys.argv[0])
    return 1
  workspace = abspath(join(dirname(sys.argv[0]), '..'))
  android_workspace = os.getenv("ANDROID_V8", "/data/local/v8")
  args = [Escape(arg) for arg in sys.argv[1:]]
  script = (" ".join(args) + "\n"
            "if [ $? -ne 0 ]\n"
            "  then echo \"Error returned by test\";\n"
            "fi\n")
  script = script.replace(workspace, android_workspace)
  script_file = WriteToTemporaryFile(script)
  android_script_file = android_workspace + "/" + script_file
  command =  ("adb push '%s' %s;" % (script_file, android_script_file) +
              "adb shell 'sh %s';" % android_script_file +
              "adb shell 'rm %s'" % android_script_file)
  error_code = Execute(command)
  os.unlink(script_file)
  return error_code

if __name__ == '__main__':
  sys.exit(Main())