1 # Copyright (c) 2009, 2010, 2011 Google Inc. All rights reserved. 2 # Copyright (c) 2009 Apple Inc. All rights reserved. 3 # 4 # Redistribution and use in source and binary forms, with or without 5 # modification, are permitted provided that the following conditions are 6 # met: 7 # 8 # * Redistributions of source code must retain the above copyright 9 # notice, this list of conditions and the following disclaimer. 10 # * Redistributions in binary form must reproduce the above 11 # copyright notice, this list of conditions and the following disclaimer 12 # in the documentation and/or other materials provided with the 13 # distribution. 14 # * Neither the name of Google Inc. nor the names of its 15 # contributors may be used to endorse or promote products derived from 16 # this software without specific prior written permission. 17 # 18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 import logging 31 32 from webkitpy.common.system.filesystem import FileSystem 33 from webkitpy.common.system.executive import Executive 34 35 from .svn import SVN 36 from .git import Git 37 38 _log = logging.getLogger(__name__) 39 40 41 class SCMDetector(object): 42 def __init__(self, filesystem, executive): 43 self._filesystem = filesystem 44 self._executive = executive 45 46 def default_scm(self, patch_directories=None): 47 """Return the default SCM object as determined by the CWD and running code. 48 49 Returns the default SCM object for the current working directory; if the 50 CWD is not in a checkout, then we attempt to figure out if the SCM module 51 itself is part of a checkout, and return that one. If neither is part of 52 a checkout, None is returned. 53 """ 54 cwd = self._filesystem.getcwd() 55 scm_system = self.detect_scm_system(cwd, patch_directories) 56 if not scm_system: 57 script_directory = self._filesystem.dirname(self._filesystem.path_to_module(self.__module__)) 58 scm_system = self.detect_scm_system(script_directory, patch_directories) 59 if scm_system: 60 _log.info("The current directory (%s) is not a WebKit checkout, using %s" % (cwd, scm_system.checkout_root)) 61 else: 62 raise Exception("FATAL: Failed to determine the SCM system for either %s or %s" % (cwd, script_directory)) 63 return scm_system 64 65 def detect_scm_system(self, path, patch_directories=None): 66 absolute_path = self._filesystem.abspath(path) 67 68 if patch_directories == []: 69 patch_directories = None 70 71 if SVN.in_working_directory(absolute_path, executive=self._executive): 72 return SVN(cwd=absolute_path, patch_directories=patch_directories, filesystem=self._filesystem, executive=self._executive) 73 74 if Git.in_working_directory(absolute_path, executive=self._executive): 75 return Git(cwd=absolute_path, filesystem=self._filesystem, executive=self._executive) 76 77 return None 78 79 80 # FIXME: These free functions are all deprecated: 81 82 def detect_scm_system(path, patch_directories=None): 83 return SCMDetector(FileSystem(), Executive()).detect_scm_system(path, patch_directories) 84
