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110 lines
5.0 KiB
Python
110 lines
5.0 KiB
Python
# Copyright (c) 2012 Google Inc. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following disclaimer
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# in the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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import os
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import sys
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class WebKitFinder(object):
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def __init__(self, filesystem):
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self._filesystem = filesystem
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self._dirsep = filesystem.sep
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self._sys_path = sys.path
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self._env_path = os.environ['PATH'].split(os.pathsep)
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self._webkit_base = None
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self._chromium_base = None
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self._depot_tools = None
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def webkit_base(self):
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"""Returns the absolute path to the top of the WebKit tree.
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Raises an AssertionError if the top dir can't be determined."""
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# Note: This code somewhat duplicates the code in
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# scm.find_checkout_root(). However, that code only works if the top
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# of the SCM repository also matches the top of the WebKit tree. Some SVN users
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# (the chromium test bots, for example), might only check out subdirectories like
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# tools. This code will also work if there is no SCM system at all.
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if not self._webkit_base:
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self._webkit_base = self._webkit_base
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module_path = self._filesystem.abspath(self._filesystem.path_to_module(self.__module__))
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tools_index = module_path.rfind('tools')
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assert tools_index != -1, "could not find location of this checkout from %s" % module_path
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self._webkit_base = self._filesystem.normpath(module_path[0:tools_index - 1])
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return self._webkit_base
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def chromium_base(self):
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if not self._chromium_base:
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self._chromium_base = self._filesystem.dirname(self.webkit_base())
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return self._chromium_base
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def path_from_webkit_base(self, *comps):
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return self._filesystem.join(self.webkit_base(), *comps)
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def path_from_chromium_base(self, *comps):
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return self._filesystem.join(self.chromium_base(), *comps)
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def path_to_script(self, script_name):
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"""Returns the relative path to the script from the top of the WebKit tree."""
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# This is intentionally relative in order to force callers to consider what
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# their current working directory is (and change to the top of the tree if necessary).
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return self.path_from_chromium_base("sky", "tools", script_name)
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def layout_tests_dir(self):
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return self.path_from_webkit_base('tests')
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def perf_tests_dir(self):
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return self.path_from_webkit_base('PerformanceTests')
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def depot_tools_base(self):
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if not self._depot_tools:
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# This basically duplicates src/tools/find_depot_tools.py without the side effects
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# (adding the directory to sys.path and importing breakpad).
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self._depot_tools = (self._check_paths_for_depot_tools(self._sys_path) or
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self._check_paths_for_depot_tools(self._env_path) or
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self._check_upward_for_depot_tools())
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return self._depot_tools
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def _check_paths_for_depot_tools(self, paths):
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for path in paths:
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if path.rstrip(self._dirsep).endswith('depot_tools'):
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return path
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return None
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def _check_upward_for_depot_tools(self):
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fs = self._filesystem
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prev_dir = ''
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current_dir = fs.dirname(self._webkit_base)
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while current_dir != prev_dir:
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if fs.exists(fs.join(current_dir, 'depot_tools', 'pylint.py')):
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return fs.join(current_dir, 'depot_tools')
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prev_dir = current_dir
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current_dir = fs.dirname(current_dir)
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def path_from_depot_tools_base(self, *comps):
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return self._filesystem.join(self.depot_tools_base(), *comps)
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