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525 lines
18 KiB
525 lines
18 KiB
#
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# Copyright (C) 2015 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import atexit
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import base64
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import logging
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import os
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import re
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import subprocess
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class FindDeviceError(RuntimeError):
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pass
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class DeviceNotFoundError(FindDeviceError):
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def __init__(self, serial):
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self.serial = serial
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super(DeviceNotFoundError, self).__init__(
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'No device with serial {}'.format(serial))
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class NoUniqueDeviceError(FindDeviceError):
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def __init__(self):
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super(NoUniqueDeviceError, self).__init__('No unique device')
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class ShellError(RuntimeError):
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def __init__(self, cmd, stdout, stderr, exit_code):
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super(ShellError, self).__init__(
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'`{0}` exited with code {1}'.format(cmd, exit_code))
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self.cmd = cmd
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self.stdout = stdout
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self.stderr = stderr
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self.exit_code = exit_code
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def get_devices(adb_path='adb'):
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with open(os.devnull, 'wb') as devnull:
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subprocess.check_call([adb_path, 'start-server'], stdout=devnull,
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stderr=devnull)
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out = split_lines(
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subprocess.check_output([adb_path, 'devices']).decode('utf-8'))
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# The first line of `adb devices` just says "List of attached devices", so
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# skip that.
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devices = []
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for line in out[1:]:
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if not line.strip():
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continue
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if 'offline' in line:
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continue
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serial, _ = re.split(r'\s+', line, maxsplit=1)
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devices.append(serial)
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return devices
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def _get_unique_device(product=None, adb_path='adb'):
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devices = get_devices(adb_path=adb_path)
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if len(devices) != 1:
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raise NoUniqueDeviceError()
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return AndroidDevice(devices[0], product, adb_path)
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def _get_device_by_serial(serial, product=None, adb_path='adb'):
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for device in get_devices(adb_path=adb_path):
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if device == serial:
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return AndroidDevice(serial, product, adb_path)
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raise DeviceNotFoundError(serial)
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def get_device(serial=None, product=None, adb_path='adb'):
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"""Get a uniquely identified AndroidDevice if one is available.
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Raises:
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DeviceNotFoundError:
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The serial specified by `serial` or $ANDROID_SERIAL is not
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connected.
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NoUniqueDeviceError:
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Neither `serial` nor $ANDROID_SERIAL was set, and the number of
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devices connected to the system is not 1. Having 0 connected
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devices will also result in this error.
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Returns:
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An AndroidDevice associated with the first non-None identifier in the
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following order of preference:
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1) The `serial` argument.
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2) The environment variable $ANDROID_SERIAL.
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3) The single device connnected to the system.
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"""
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if serial is not None:
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return _get_device_by_serial(serial, product, adb_path)
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android_serial = os.getenv('ANDROID_SERIAL')
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if android_serial is not None:
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return _get_device_by_serial(android_serial, product, adb_path)
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return _get_unique_device(product, adb_path=adb_path)
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def _get_device_by_type(flag, adb_path):
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with open(os.devnull, 'wb') as devnull:
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subprocess.check_call([adb_path, 'start-server'], stdout=devnull,
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stderr=devnull)
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try:
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serial = subprocess.check_output(
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[adb_path, flag, 'get-serialno']).decode('utf-8').strip()
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except subprocess.CalledProcessError:
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raise RuntimeError('adb unexpectedly returned nonzero')
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if serial == 'unknown':
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raise NoUniqueDeviceError()
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return _get_device_by_serial(serial, adb_path=adb_path)
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def get_usb_device(adb_path='adb'):
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"""Get the unique USB-connected AndroidDevice if it is available.
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Raises:
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NoUniqueDeviceError:
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0 or multiple devices are connected via USB.
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Returns:
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An AndroidDevice associated with the unique USB-connected device.
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"""
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return _get_device_by_type('-d', adb_path=adb_path)
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def get_emulator_device(adb_path='adb'):
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"""Get the unique emulator AndroidDevice if it is available.
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Raises:
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NoUniqueDeviceError:
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0 or multiple emulators are running.
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Returns:
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An AndroidDevice associated with the unique running emulator.
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"""
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return _get_device_by_type('-e', adb_path=adb_path)
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# If necessary, modifies subprocess.check_output() or subprocess.Popen() args
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# to run the subprocess via Windows PowerShell to work-around an issue in
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# Python 2's subprocess class on Windows where it doesn't support Unicode.
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def _get_subprocess_args(args):
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# Only do this slow work-around if Unicode is in the cmd line on Windows.
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# PowerShell takes 600-700ms to startup on a 2013-2014 machine, which is
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# very slow.
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if os.name != 'nt' or all(not isinstance(arg, unicode) for arg in args[0]):
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return args
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def escape_arg(arg):
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# Escape for the parsing that the C Runtime does in Windows apps. In
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# particular, this will take care of double-quotes.
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arg = subprocess.list2cmdline([arg])
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# Escape single-quote with another single-quote because we're about
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# to...
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arg = arg.replace(u"'", u"''")
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# ...put the arg in a single-quoted string for PowerShell to parse.
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arg = u"'" + arg + u"'"
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return arg
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# Escape command line args.
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argv = map(escape_arg, args[0])
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# Cause script errors (such as adb not found) to stop script immediately
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# with an error.
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ps_code = u'$ErrorActionPreference = "Stop"\r\n'
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# Add current directory to the PATH var, to match cmd.exe/CreateProcess()
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# behavior.
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ps_code += u'$env:Path = ".;" + $env:Path\r\n'
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# Precede by &, the PowerShell call operator, and separate args by space.
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ps_code += u'& ' + u' '.join(argv)
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# Make the PowerShell exit code the exit code of the subprocess.
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ps_code += u'\r\nExit $LastExitCode'
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# Encode as UTF-16LE (without Byte-Order-Mark) which Windows natively
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# understands.
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ps_code = ps_code.encode('utf-16le')
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# Encode the PowerShell command as base64 and use the special
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# -EncodedCommand option that base64 decodes. Base64 is just plain ASCII,
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# so it should have no problem passing through Win32 CreateProcessA()
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# (which python erroneously calls instead of CreateProcessW()).
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return (['powershell.exe', '-NoProfile', '-NonInteractive',
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'-EncodedCommand', base64.b64encode(ps_code)],) + args[1:]
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# Call this instead of subprocess.check_output() to work-around issue in Python
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# 2's subprocess class on Windows where it doesn't support Unicode.
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def _subprocess_check_output(*args, **kwargs):
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try:
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return subprocess.check_output(*_get_subprocess_args(args), **kwargs)
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except subprocess.CalledProcessError as e:
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# Show real command line instead of the powershell.exe command line.
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raise subprocess.CalledProcessError(e.returncode, args[0],
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output=e.output)
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# Call this instead of subprocess.Popen(). Like _subprocess_check_output().
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def _subprocess_Popen(*args, **kwargs):
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return subprocess.Popen(*_get_subprocess_args(args), **kwargs)
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def split_lines(s):
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"""Splits lines in a way that works even on Windows and old devices.
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Windows will see \r\n instead of \n, old devices do the same, old devices
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on Windows will see \r\r\n.
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"""
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# rstrip is used here to workaround a difference between splineslines and
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# re.split:
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# >>> 'foo\n'.splitlines()
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# ['foo']
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# >>> re.split(r'\n', 'foo\n')
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# ['foo', '']
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return re.split(r'[\r\n]+', s.rstrip())
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def version(adb_path=None):
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"""Get the version of adb (in terms of ADB_SERVER_VERSION)."""
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adb_path = adb_path if adb_path is not None else ['adb']
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version_output = subprocess.check_output(adb_path + ['version'])
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version_output = version_output.decode('utf-8')
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pattern = r'^Android Debug Bridge version 1.0.(\d+)$'
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result = re.match(pattern, version_output.splitlines()[0])
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if not result:
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return 0
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return int(result.group(1))
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class AndroidDevice(object):
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# Delimiter string to indicate the start of the exit code.
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_RETURN_CODE_DELIMITER = 'x'
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# Follow any shell command with this string to get the exit
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# status of a program since this isn't propagated by adb.
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#
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# The delimiter is needed because `printf 1; echo $?` would print
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# "10", and we wouldn't be able to distinguish the exit code.
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_RETURN_CODE_PROBE = [';', 'echo', '{0}$?'.format(_RETURN_CODE_DELIMITER)]
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# Maximum search distance from the output end to find the delimiter.
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# adb on Windows returns \r\n even if adbd returns \n. Some old devices
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# seem to actually return \r\r\n.
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_RETURN_CODE_SEARCH_LENGTH = len(
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'{0}255\r\r\n'.format(_RETURN_CODE_DELIMITER))
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def __init__(self, serial, product=None, adb_path='adb'):
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self.serial = serial
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self.product = product
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self.adb_path = adb_path
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self.adb_cmd = [adb_path]
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if self.serial is not None:
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self.adb_cmd.extend(['-s', serial])
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if self.product is not None:
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self.adb_cmd.extend(['-p', product])
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self._linesep = None
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self._features = None
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@property
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def linesep(self):
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if self._linesep is None:
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self._linesep = subprocess.check_output(
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self.adb_cmd + ['shell', 'echo']).decode('utf-8')
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return self._linesep
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@property
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def features(self):
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if self._features is None:
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try:
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self._features = split_lines(self._simple_call(['features']))
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except subprocess.CalledProcessError:
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self._features = []
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return self._features
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def has_shell_protocol(self):
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return version(self.adb_cmd) >= 35 and 'shell_v2' in self.features
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def _make_shell_cmd(self, user_cmd):
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command = self.adb_cmd + ['shell'] + user_cmd
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if not self.has_shell_protocol():
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command += self._RETURN_CODE_PROBE
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return command
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def _parse_shell_output(self, out):
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"""Finds the exit code string from shell output.
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Args:
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out: Shell output string.
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Returns:
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An (exit_code, output_string) tuple. The output string is
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cleaned of any additional stuff we appended to find the
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exit code.
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Raises:
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RuntimeError: Could not find the exit code in |out|.
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"""
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search_text = out
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if len(search_text) > self._RETURN_CODE_SEARCH_LENGTH:
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# We don't want to search over massive amounts of data when we know
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# the part we want is right at the end.
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search_text = search_text[-self._RETURN_CODE_SEARCH_LENGTH:]
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partition = search_text.rpartition(self._RETURN_CODE_DELIMITER)
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if partition[1] == '':
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raise RuntimeError('Could not find exit status in shell output.')
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result = int(partition[2])
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# partition[0] won't contain the full text if search_text was
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# truncated, pull from the original string instead.
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out = out[:-len(partition[1]) - len(partition[2])]
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return result, out
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def _simple_call(self, cmd):
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logging.info(' '.join(self.adb_cmd + cmd))
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return _subprocess_check_output(
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self.adb_cmd + cmd, stderr=subprocess.STDOUT).decode('utf-8')
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def shell(self, cmd):
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"""Calls `adb shell`
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Args:
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cmd: command to execute as a list of strings.
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Returns:
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A (stdout, stderr) tuple. Stderr may be combined into stdout
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if the device doesn't support separate streams.
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Raises:
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ShellError: the exit code was non-zero.
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"""
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exit_code, stdout, stderr = self.shell_nocheck(cmd)
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if exit_code != 0:
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raise ShellError(cmd, stdout, stderr, exit_code)
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return stdout, stderr
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def shell_nocheck(self, cmd):
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"""Calls `adb shell`
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Args:
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cmd: command to execute as a list of strings.
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Returns:
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An (exit_code, stdout, stderr) tuple. Stderr may be combined
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into stdout if the device doesn't support separate streams.
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"""
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cmd = self._make_shell_cmd(cmd)
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logging.info(' '.join(cmd))
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p = _subprocess_Popen(
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cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout, stderr = p.communicate()
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stdout = stdout.decode('utf-8')
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stderr = stderr.decode('utf-8')
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if self.has_shell_protocol():
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exit_code = p.returncode
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else:
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exit_code, stdout = self._parse_shell_output(stdout)
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return exit_code, stdout, stderr
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def shell_popen(self, cmd, kill_atexit=True, preexec_fn=None,
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creationflags=0, **kwargs):
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"""Calls `adb shell` and returns a handle to the adb process.
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This function provides direct access to the subprocess used to run the
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command, without special return code handling. Users that need the
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return value must retrieve it themselves.
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Args:
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cmd: Array of command arguments to execute.
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kill_atexit: Whether to kill the process upon exiting.
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preexec_fn: Argument forwarded to subprocess.Popen.
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creationflags: Argument forwarded to subprocess.Popen.
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**kwargs: Arguments forwarded to subprocess.Popen.
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Returns:
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subprocess.Popen handle to the adb shell instance
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"""
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command = self.adb_cmd + ['shell'] + cmd
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# Make sure a ctrl-c in the parent script doesn't kill gdbserver.
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if os.name == 'nt':
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creationflags |= subprocess.CREATE_NEW_PROCESS_GROUP
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else:
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if preexec_fn is None:
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preexec_fn = os.setpgrp
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elif preexec_fn is not os.setpgrp:
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fn = preexec_fn
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def _wrapper():
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fn()
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os.setpgrp()
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preexec_fn = _wrapper
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p = _subprocess_Popen(command, creationflags=creationflags,
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preexec_fn=preexec_fn, **kwargs)
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if kill_atexit:
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atexit.register(p.kill)
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return p
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def install(self, filename, replace=False):
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cmd = ['install']
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if replace:
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cmd.append('-r')
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cmd.append(filename)
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return self._simple_call(cmd)
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def push(self, local, remote, sync=False):
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"""Transfer a local file or directory to the device.
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Args:
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local: The local file or directory to transfer.
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remote: The remote path to which local should be transferred.
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sync: If True, only transfers files that are newer on the host than
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those on the device. If False, transfers all files.
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Returns:
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Exit status of the push command.
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"""
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cmd = ['push']
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if sync:
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cmd.append('--sync')
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if isinstance(local, str):
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cmd.extend([local, remote])
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else:
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cmd.extend(local)
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cmd.append(remote)
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return self._simple_call(cmd)
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def pull(self, remote, local):
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return self._simple_call(['pull', remote, local])
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def sync(self, directory=None):
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cmd = ['sync']
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if directory is not None:
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cmd.append(directory)
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return self._simple_call(cmd)
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def tcpip(self, port):
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return self._simple_call(['tcpip', port])
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def usb(self):
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return self._simple_call(['usb'])
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def reboot(self):
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return self._simple_call(['reboot'])
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def remount(self):
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return self._simple_call(['remount'])
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def root(self):
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return self._simple_call(['root'])
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def unroot(self):
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return self._simple_call(['unroot'])
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def connect(self, host):
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return self._simple_call(['connect', host])
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def disconnect(self, host):
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return self._simple_call(['disconnect', host])
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def forward(self, local, remote):
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return self._simple_call(['forward', local, remote])
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def forward_list(self):
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return self._simple_call(['forward', '--list'])
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def forward_no_rebind(self, local, remote):
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return self._simple_call(['forward', '--no-rebind', local, remote])
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def forward_remove(self, local):
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return self._simple_call(['forward', '--remove', local])
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def forward_remove_all(self):
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return self._simple_call(['forward', '--remove-all'])
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def reverse(self, remote, local):
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return self._simple_call(['reverse', remote, local])
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def reverse_list(self):
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return self._simple_call(['reverse', '--list'])
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def reverse_no_rebind(self, local, remote):
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return self._simple_call(['reverse', '--no-rebind', local, remote])
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def reverse_remove_all(self):
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return self._simple_call(['reverse', '--remove-all'])
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def reverse_remove(self, remote):
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return self._simple_call(['reverse', '--remove', remote])
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def wait(self):
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return self._simple_call(['wait-for-device'])
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def get_prop(self, prop_name):
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output = split_lines(self.shell(['getprop', prop_name])[0])
|
|
if len(output) != 1:
|
|
raise RuntimeError('Too many lines in getprop output:\n' +
|
|
'\n'.join(output))
|
|
value = output[0]
|
|
if not value.strip():
|
|
return None
|
|
return value
|
|
|
|
def set_prop(self, prop_name, value):
|
|
self.shell(['setprop', prop_name, value])
|