When running an svn update, if --force was passed on the

command line to gclient, pass the flag to svn update and
svn co too.

This allows updates when we have dirty files left around.
For example, an update may remove a directory, but the
directory still has .vcproj or .mk files in it.  If we
try to re-add that directory, svn will error out.  If
we add --force, it'll happily allow the update.
Review URL: http://codereview.chromium.org/2560001

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@48897 0039d316-1c4b-4281-b951-d872f2087c98

gclient_scm.py

@@ -740,8 +740,7 @@ class SVNWrapper(SCMWrapper):
     if not os.path.exists(checkout_path):
       # We need to checkout.
       command = ['checkout', url, checkout_path]
-      if revision:
-        command.extend(['--revision', str(revision).strip()])
+      command = self.AddAdditionalFlags(command, options, revision)
       scm.SVN.RunAndGetFileList(options, command, self._root_dir, file_list)
       return
 
@@ -798,8 +797,7 @@ class SVNWrapper(SCMWrapper):
         gclient_utils.RemoveDirectory(checkout_path)
         # We need to checkout.
         command = ['checkout', url, checkout_path]
-        if revision:
-          command.extend(['--revision', str(revision).strip()])
+        command = self.AddAdditionalFlags(command, options, revision)
         scm.SVN.RunAndGetFileList(options, command, self._root_dir, file_list)
         return
 
@@ -812,8 +810,7 @@ class SVNWrapper(SCMWrapper):
       return
 
     command = ["update", checkout_path]
-    if revision:
-      command.extend(['--revision', str(revision).strip()])
+    command = self.AddAdditionalFlags(command, options, revision)
     scm.SVN.RunAndGetFileList(options, command, self._root_dir, file_list)
 
   def updatesingle(self, options, args, file_list):
@@ -841,8 +838,7 @@ class SVNWrapper(SCMWrapper):
         os.makedirs(checkout_path)
       command = ["export", os.path.join(self.url, filename),
                  os.path.join(checkout_path, filename)]
-      if options.revision:
-        command.extend(['--revision', str(options.revision).strip()])
+      command = self.AddAdditionalFlags(command, options, options.revision)
       scm.SVN.Run(command, self._root_dir)
 
   def revert(self, options, args, file_list):
@@ -927,3 +923,15 @@ class SVNWrapper(SCMWrapper):
   def FullUrlForRelativeUrl(self, url):
     # Find the forth '/' and strip from there. A bit hackish.
     return '/'.join(self.url.split('/')[:4]) + url
+
+  def AddAdditionalFlags(self, command, options, revision):
+    """Add additional flags to command depending on what options are set.
+    command should be a list of strings that represents an svn command.
+
+    This method returns a new list to be used as a command."""
+    new_command = command[:]
+    if revision:
+      new_command.extend(['--revision', str(revision).strip()])
+    if options.force:
+      new_command.append('--force')
+    return new_command

tests/gclient_scm_test.py

@@ -68,7 +68,7 @@ class SVNWrapperTestCase(BaseTestCase):
 
   def testDir(self):
     members = [
-        'FullUrlForRelativeUrl', 'RunCommand',
+        'AddAdditionalFlags', 'FullUrlForRelativeUrl', 'RunCommand',
         'cleanup', 'diff', 'export', 'pack', 'relpath', 'revert',
         'revinfo', 'runhooks', 'scm_name', 'status', 'update',
         'updatesingle', 'url',
@@ -266,6 +266,8 @@ class SVNWrapperTestCase(BaseTestCase):
     additional_args = []
     if options.manually_grab_svn_rev:
       additional_args = ['--revision', str(file_info['Revision'])]
+    if options.force:
+      additional_args.append('--force')
     files_list = []
     gclient_scm.scm.SVN.RunAndGetFileList(
         options,