rebaseline_server: add actual_repo and actual_revision command line options

tools/svn.py

 '''
 Copyright 2011 Google Inc.
 
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 '''
 
 import fnmatch
 import os
 import re
@@ skipping 77 matching lines @@
     def Checkout(self, url, path):
         """Check out a working copy from a repository.
         Returns stdout as a single string.
 
         @param url URL from which to check out the working copy
         @param path path (within self._directory) where the local copy will be
         written
         """
         return self._RunCommand([SVN, 'checkout', url, path])
 
-    def Update(self, path):
+    def Update(self, path, revision='HEAD'):
         """Update the working copy.
         Returns stdout as a single string.
 
         @param path path (within self._directory) within which to run
-        "svn update"
+          "svn update"
+        @param revision revision to update to
         """
-        return self._RunCommand([SVN, 'update', path])
+        return self._RunCommand([SVN, 'update', path, '--revision', revision])

[borenet, 2014/03/10 18:01:12]

Does "--revision HEAD" do the right thing?  Or should we just leave off the
--revision parameter when revision == HEAD ?

[epoger, 2014/03/10 18:08:54]

Yup, it works fine.  From "svn help update":
  -r [--revision] ARG      : ARG (some commands also take ARG1:ARG2 range)
                             A revision argument can be one of:
                                NUMBER       revision number
                                '{' DATE '}' revision at start of the date
                                'HEAD'       latest in repository
                                'BASE'       base rev of item's working copy
                                'COMMITTED'  last commit at or before BASE
                                'PREV'       revision just before COMMITTED

... and I tested it, to make sure.

 
     def ListSubdirs(self, url):
         """Returns a list of all subdirectories (not files) within a given SVN
         url.
 
         @param url remote directory to list subdirectories of
         """
         subdirs = []
         filenames = self._RunCommand([SVN, 'ls', url]).split('\n')
         for filename in filenames:
@@ skipping 69 matching lines @@
     def ExportBaseVersionOfFile(self, file_within_repo, dest_path):
         """Retrieves a copy of the base version (what you would get if you ran
         'svn revert') of a file within the repository.
 
         @param file_within_repo path to the file within the repo whose base
                version you wish to obtain
         @param dest_path destination to which to write the base content
         """
         self._RunCommand([SVN, 'export', '--revision', 'BASE', '--force',
                           file_within_repo, dest_path])