Index: build/android/pylib/flag_changer.py |
diff --git a/build/android/pylib/flag_changer.py b/build/android/pylib/flag_changer.py |
deleted file mode 100644 |
index 718bc3971500b2c94dcaa6606ccc0c364de5ae10..0000000000000000000000000000000000000000 |
--- a/build/android/pylib/flag_changer.py |
+++ /dev/null |
@@ -1,166 +0,0 @@ |
-# 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. |
- |
-import logging |
- |
-import pylib.android_commands |
-import pylib.device.device_utils |
- |
-from pylib.device import device_errors |
- |
- |
-class FlagChanger(object): |
- """Changes the flags Chrome runs with. |
- |
- There are two different use cases for this file: |
- * Flags are permanently set by calling Set(). |
- * Flags can be temporarily set for a particular set of unit tests. These |
- tests should call Restore() to revert the flags to their original state |
- once the tests have completed. |
- """ |
- |
- def __init__(self, device, cmdline_file): |
- """Initializes the FlagChanger and records the original arguments. |
- |
- Args: |
- device: A DeviceUtils instance. |
- cmdline_file: Path to the command line file on the device. |
- """ |
- # TODO(jbudorick) Remove once telemetry switches over. |
- if isinstance(device, pylib.android_commands.AndroidCommands): |
- device = pylib.device.device_utils.DeviceUtils(device) |
- self._device = device |
- self._cmdline_file = cmdline_file |
- |
- # Save the original flags. |
- try: |
- self._orig_line = self._device.ReadFile(self._cmdline_file).strip() |
- except device_errors.CommandFailedError: |
- self._orig_line = '' |
- |
- # Parse out the flags into a list to facilitate adding and removing flags. |
- self._current_flags = self._TokenizeFlags(self._orig_line) |
- |
- def Get(self): |
- """Returns list of current flags.""" |
- return self._current_flags |
- |
- def Set(self, flags): |
- """Replaces all flags on the current command line with the flags given. |
- |
- Args: |
- flags: A list of flags to set, eg. ['--single-process']. |
- """ |
- if flags: |
- assert flags[0] != 'chrome' |
- |
- self._current_flags = flags |
- self._UpdateCommandLineFile() |
- |
- def AddFlags(self, flags): |
- """Appends flags to the command line if they aren't already there. |
- |
- Args: |
- flags: A list of flags to add on, eg. ['--single-process']. |
- """ |
- if flags: |
- assert flags[0] != 'chrome' |
- |
- # Avoid appending flags that are already present. |
- for flag in flags: |
- if flag not in self._current_flags: |
- self._current_flags.append(flag) |
- self._UpdateCommandLineFile() |
- |
- def RemoveFlags(self, flags): |
- """Removes flags from the command line, if they exist. |
- |
- Args: |
- flags: A list of flags to remove, eg. ['--single-process']. Note that we |
- expect a complete match when removing flags; if you want to remove |
- a switch with a value, you must use the exact string used to add |
- it in the first place. |
- """ |
- if flags: |
- assert flags[0] != 'chrome' |
- |
- for flag in flags: |
- if flag in self._current_flags: |
- self._current_flags.remove(flag) |
- self._UpdateCommandLineFile() |
- |
- def Restore(self): |
- """Restores the flags to their original state.""" |
- self._current_flags = self._TokenizeFlags(self._orig_line) |
- self._UpdateCommandLineFile() |
- |
- def _UpdateCommandLineFile(self): |
- """Writes out the command line to the file, or removes it if empty.""" |
- logging.info('Current flags: %s', self._current_flags) |
- # Root is not required to write to /data/local/tmp/. |
- use_root = '/data/local/tmp/' not in self._cmdline_file |
- if self._current_flags: |
- # The first command line argument doesn't matter as we are not actually |
- # launching the chrome executable using this command line. |
- cmd_line = ' '.join(['_'] + self._current_flags) |
- self._device.WriteFile( |
- self._cmdline_file, cmd_line, as_root=use_root) |
- file_contents = self._device.ReadFile( |
- self._cmdline_file, as_root=use_root).rstrip() |
- assert file_contents == cmd_line, ( |
- 'Failed to set the command line file at %s' % self._cmdline_file) |
- else: |
- self._device.RunShellCommand('rm ' + self._cmdline_file, |
- as_root=use_root) |
- assert not self._device.FileExists(self._cmdline_file), ( |
- 'Failed to remove the command line file at %s' % self._cmdline_file) |
- |
- @staticmethod |
- def _TokenizeFlags(line): |
- """Changes the string containing the command line into a list of flags. |
- |
- Follows similar logic to CommandLine.java::tokenizeQuotedArguments: |
- * Flags are split using whitespace, unless the whitespace is within a |
- pair of quotation marks. |
- * Unlike the Java version, we keep the quotation marks around switch |
- values since we need them to re-create the file when new flags are |
- appended. |
- |
- Args: |
- line: A string containing the entire command line. The first token is |
- assumed to be the program name. |
- """ |
- if not line: |
- return [] |
- |
- tokenized_flags = [] |
- current_flag = "" |
- within_quotations = False |
- |
- # Move through the string character by character and build up each flag |
- # along the way. |
- for c in line.strip(): |
- if c is '"': |
- if len(current_flag) > 0 and current_flag[-1] == '\\': |
- # Last char was a backslash; pop it, and treat this " as a literal. |
- current_flag = current_flag[0:-1] + '"' |
- else: |
- within_quotations = not within_quotations |
- current_flag += c |
- elif not within_quotations and (c is ' ' or c is '\t'): |
- if current_flag is not "": |
- tokenized_flags.append(current_flag) |
- current_flag = "" |
- else: |
- current_flag += c |
- |
- # Tack on the last flag. |
- if not current_flag: |
- if within_quotations: |
- logging.warn('Unterminated quoted argument: ' + line) |
- else: |
- tokenized_flags.append(current_flag) |
- |
- # Return everything but the program name. |
- return tokenized_flags[1:] |