Delete the revert.py tool.

It's been replaced by drover a year ago.

TEST=none
BUG=none

Review URL: http://codereview.chromium.org/553145

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@37487 0039d316-1c4b-4281-b951-d872f2087c98

revert

-#!/bin/bash
-# Copyright (c) 2009 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.
-
-base_dir=$(dirname "$0")
-
-# Use the batch file as an entry point if on cygwin.
-if [ "${OSTYPE}" = "cygwin" -a "${TERM}" != "xterm" ]; then
-   ${base_dir}/revert.bat "$@"
-   exit
-fi
-
-exec python "$base_dir/revert.py" "$@"

revert.bat

-@python "%~dp0revert.py" %*

revert.py

-#!/usr/bin/python
-# Copyright (c) 2006-2009 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.
-#
-# Tool to quickly revert a change.
-
-import exceptions
-import optparse
-import os
-import sys
-import xml
-
-import gcl
-import gclient
-import gclient_scm
-import gclient_utils
-
-class ModifiedFile(exceptions.Exception):
-  pass
-class NoModifiedFile(exceptions.Exception):
-  pass
-class NoBlameList(exceptions.Exception):
-  pass
-class OutsideOfCheckout(exceptions.Exception):
-  pass
-
-
-def UniqueFast(list):
-  list = [item for item in set(list)]
-  list.sort()
-  return list
-
-
-def GetRepoBase():
-  """Returns the repository base of the root local checkout."""
-  info = gclient_scm.CaptureSVNInfo('.')
-  root = info['Repository Root']
-  url = info['URL']
-  if not root or not url:
-    raise exceptions.Exception("I'm confused by your checkout")
-  if not url.startswith(root):
-    raise exceptions.Exception("I'm confused by your checkout", url, root)
-  return url[len(root):] + '/'
-
-
-def CaptureSVNLog(args):
-  command = ['log', '--xml']
-  if args:
-    command += args
-  output = gclient_scm.CaptureSVN(command)
-  dom = gclient_utils.ParseXML(output)
-  entries = []
-  if dom:
-    # /log/logentry/
-    #   @revision
-    #   author|date
-    #   paths/
-    #     path (@kind&@action)
-    for node in dom.getElementsByTagName('logentry'):
-      paths = []
-      for path in node.getElementsByTagName('path'):
-        item = {
-          'kind': path.getAttribute('kind'),
-          'action': path.getAttribute('action'),
-          'path': path.firstChild.nodeValue,
-        }
-        paths.append(item)
-      entry = {
-        'revision': int(node.getAttribute('revision')),
-        'author': gclient_utils.GetNamedNodeText(node, 'author'),
-        'date': gclient_utils.GetNamedNodeText(node, 'date'),
-        'paths': paths,
-      }
-      entries.append(entry)
-  return entries
-
-
-def Revert(revisions, force=False, commit=True, send_email=True, message=None,
-           reviewers=None):
-  """Reverts many revisions in one change list.
-
-  If force is True, it will override local modifications.
-  If commit is True, a commit is done after the revert.
-  If send_mail is True, a review email is sent.
-  If message is True, it is used as the change description.
-  reviewers overrides the blames email addresses for review email."""
-
-  # Use the oldest revision as the primary revision.
-  changename = "revert%d" % revisions[len(revisions)-1]
-  if not force and os.path.exists(gcl.GetChangelistInfoFile(changename)):
-    print "Error, change %s already exist." % changename
-    return 1
-
-  # Move to the repository root and make the revision numbers sorted in
-  # decreasing order.
-  local_root = gcl.GetRepositoryRoot()
-  os.chdir(local_root)
-  revisions.sort(reverse=True)
-  revisions_string = ",".join([str(rev) for rev in revisions])
-  revisions_string_rev = ",".join([str(-rev) for rev in revisions])
-
-  # Get all the modified files by the revision. We'll use this list to optimize
-  # the svn merge.
-  logs = []
-  for revision in revisions:
-    logs.extend(CaptureSVNLog(["-r", str(revision), "-v"]))
-
-  files = []
-  blames = []
-  repo_base = GetRepoBase()
-  for log in logs:
-    for file in log['paths']:
-      file_name = file['path']
-      # Remove the /trunk/src/ part. The + 1 is for the last slash.
-      if not file_name.startswith(repo_base):
-        raise OutsideOfCheckout(file_name)
-      files.append(file_name[len(repo_base):])
-    blames.append(log['author'])
-
-  # On Windows, we need to fix the slashes once they got the url part removed.
-  if sys.platform == 'win32':
-    # On Windows, gcl expect the correct slashes.
-    files = [file.replace('/', os.sep) for file in files]
-
-  # Keep unique.
-  files = UniqueFast(files)
-  blames = UniqueFast(blames)
-  if not reviewers:
-    reviewers = blames
-  else:
-    reviewers = UniqueFast(reviewers)
-
-  # Make sure there's something to revert.
-  if not files:
-    raise NoModifiedFile
-  if not reviewers:
-    raise NoBlameList
-
-  if blames:
-    print "Blaming %s\n" % ",".join(blames)
-  if reviewers != blames:
-    print "Emailing %s\n" % ",".join(reviewers)
-  print "These files were modified in %s:" % revisions_string
-  print "\n".join(files)
-  print ""
-
-  # Make sure these files are unmodified with svn status.
-  status = gclient_scm.scm.SVN.CaptureStatus(files)
-  if status:
-    if force:
-      # TODO(maruel): Use the tool to correctly revert '?' files.
-      gcl.RunShell(["svn", "revert"] + files)
-    else:
-      raise ModifiedFile(status)
-  # svn up on each of these files
-  gcl.RunShell(["svn", "up"] + files)
-
-  files_status = {}
-  # Extract the first level subpaths. Subversion seems to degrade
-  # exponentially w.r.t. repository size during merges. Working at the root
-  # directory is too rough for svn due to the repository size.
-  roots = UniqueFast([file.split(os.sep)[0] for file in files])
-  for root in roots:
-    # Is it a subdirectory or a files?
-    is_root_subdir = os.path.isdir(root)
-    need_to_update = False
-    if is_root_subdir:
-      os.chdir(root)
-      file_list = []
-      # List the file directly since it is faster when there is only one file.
-      for file in files:
-        if file.startswith(root):
-          file_list.append(file[len(root)+1:])
-      if len(file_list) > 1:
-        # Listing multiple files is not supported by svn merge.
-        file_list = ['.']
-        need_to_update = True
-    else:
-      # Oops, root was in fact a file in the root directory.
-      file_list = [root]
-      root = "."
-
-    print "Reverting %s in %s/" % (revisions_string, root)
-    if need_to_update:
-      # Make sure '.' revision is high enough otherwise merge will be
-      # unhappy.
-      retcode = gcl.RunShellWithReturnCode(['svn', 'up', '.', '-N'])[1]
-      if retcode:
-        print 'svn up . -N failed in %s/.' % root
-        return retcode
-
-    command = ["svn", "merge", "-c", revisions_string_rev]
-    command.extend(file_list)
-    (output, retcode) = gcl.RunShellWithReturnCode(command, print_output=True)
-    if retcode:
-      print "'%s' failed:" % command
-      return retcode
-
-    # Grab the status
-    lines = output.split('\n')
-    for line in lines:
-      if line.startswith('---'):
-        continue
-      if line.startswith('Skipped'):
-        print ""
-        raise ModifiedFile(line[9:-1])
-      # Update the status.
-      status = line[:5] + '  '
-      file = line[5:]
-      if is_root_subdir:
-        files_status[root + os.sep + file] = status
-      else:
-        files_status[file] = status
-
-    if is_root_subdir:
-      os.chdir('..')
-
-  # Transform files_status from a dictionary to a list of tuple.
-  files_status = [(files_status[file], file) for file in files]
-
-  description = "Reverting %s." % revisions_string
-  if message:
-    description += "\n\n"
-    description += message
-  # Don't use gcl.Change() since it prompts the user for infos.
-  change_info = gcl.ChangeInfo(changename, 0, 0, description, files_status,
-                               local_root)
-  change_info.Save()
-
-  upload_args = ['--no_presubmit', '-r', ",".join(reviewers)]
-  if send_email:
-    upload_args.append('--send_mail')
-  if commit:
-    upload_args.append('--no_try')
-  gcl.UploadCL(change_info, upload_args)
-
-  retcode = 0
-  if commit:
-    gcl.Commit(change_info, ['--no_presubmit', '--force'])
-    # TODO(maruel):  gclient sync (to leave the local checkout in an usable
-    # state)
-    retcode = gclient.Main(["gclient.py", "sync"])
-  return retcode
-
-
-def Main(argv):
-  usage = (
-"""%prog [options] [revision numbers to revert]
-Revert a set of revisions, send the review to Rietveld, sends a review email
-and optionally commit the revert.""")
-
-  parser = optparse.OptionParser(usage=usage)
-  parser.add_option("-c", "--commit", default=False, action="store_true",
-                    help="Commits right away.")
-  parser.add_option("-f", "--force", default=False, action="store_true",
-                    help="Forces the local modification even if a file is "
-                         "already modified locally.")
-  parser.add_option("-n", "--no_email", default=False, action="store_true",
-                    help="Inhibits from sending a review email.")
-  parser.add_option("-m", "--message", default=None,
-                    help="Additional change description message.")
-  parser.add_option("-r", "--reviewers", action="append",
-                    help="Reviewers to send the email to. By default, the list "
-                         "of commiters is used.")
-  if len(argv) < 2:
-    parser.print_help()
-    return 1;
-
-  options, args = parser.parse_args(argv)
-  revisions = []
-  try:
-    for item in args[1:]:
-      revisions.append(int(item))
-  except ValueError:
-    parser.error("You need to pass revision numbers.")
-  if not revisions:
-    parser.error("You need to pass revision numbers.")
-  retcode = 1
-  try:
-    if not os.path.exists(gcl.GetInfoDir()):
-      os.mkdir(gcl.GetInfoDir())
-    retcode = Revert(revisions, options.force, options.commit,
-                     not options.no_email, options.message, options.reviewers)
-  except NoBlameList:
-    print "Error: no one to blame."
-  except NoModifiedFile:
-    print "Error: no files to revert."
-  except ModifiedFile, e:
-    print "You need to revert these files since they were already modified:"
-    print "".join(e.args)
-    print "You can use the --force flag to revert the files."
-  except OutsideOfCheckout, e:
-    print "Your repository doesn't contain ", str(e)
-
-  return retcode
-
-
-if __name__ == "__main__":
-  sys.exit(Main(sys.argv))