Consolidate mass-rename.sh and move_source_file.py

tools/refactor/move_file.py

-#!/usr/bin/env python
-# Copyright (c) 2012 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.
-
-"""Moves a C++ file to a new location, updating any include paths that
-point to it.  Updates include guards in moved header files.  Assumes
-Chromium coding style.
-
-Does not reorder headers (you can use tools/sort-headers.py), and does
-not update .gypi files.
-
-Relies on git for a fast way to find files that include the moved file.
-"""
-
-
-import os
-import subprocess
-import sys
-
-
-HANDLED_EXTENSIONS = ['.cc', '.mm', '.h', '.hh']
-
-
-def MoveFile(from_path, to_path):
-  """Moves a file from |from_path| to |to_path|, updating its include
-  guard to match the new path and updating all #includes and #imports
-  of the file in other files in the same git repository, with the
-  assumption that they include it using the Chromium style
-  guide-standard full path from root.
-  """
-  extension = os.path.splitext(from_path)[1]
-  if extension not in HANDLED_EXTENSIONS:
-    raise Exception('Only intended to move individual source files.')
-
-  dest_extension = os.path.splitext(to_path)[1]
-  if dest_extension not in HANDLED_EXTENSIONS:
-    if to_path.endswith('/') or to_path.endswith('\\'):
-      to_path += os.path.basename(from_path)
-    else:
-      raise Exception('Destination must be either full path or end with /.')
-
-  if not os.system('git mv %s %s' % (from_path, to_path)) == 0:
-    raise Exception('Fatal: Failed to run git mv command.')
-
-  if extension in ['.h', '.hh']:
-    UpdateIncludeGuard(from_path, to_path)
-    UpdateIncludes(from_path, to_path)
-
-
-def MakeIncludeGuardName(path_from_root):
-  """Returns an include guard name given a path from root."""
-  guard = path_from_root.replace('/', '_')
-  guard = guard.replace('\\', '_')
-  guard = guard.replace('.', '_')
-  guard += '_'
-  return guard.upper()
-
-
-def UpdateIncludeGuard(old_path, new_path):
-  """Updates the include guard in a file now residing at |new_path|,
-  previously residing at |old_path|, with an up-to-date include guard.
-
-  Errors out if an include guard per Chromium style guide cannot be
-  found for the old path.
-  """
-  old_guard = MakeIncludeGuardName(old_path)
-  new_guard = MakeIncludeGuardName(new_path)
-
-  with open(new_path) as f:
-    contents = f.read()
-
-  new_contents = contents.replace(old_guard, new_guard)
-  if new_contents == contents:
-    raise Exception(
-      'Error updating include guard; perhaps old guard is not per style guide?')
-
-  with open(new_path, 'w') as f:
-    f.write(new_contents)
-
-
-def UpdateIncludes(old_path, new_path):
-  """Given the |old_path| and |new_path| of a file being moved, update
-  #include and #import statements in all files in the same git
-  repository referring to the moved file.
-  """
-  # Include paths always use forward slashes.
-  old_path = old_path.replace('\\', '/')
-  new_path = new_path.replace('\\', '/')
-
-  out, err = subprocess.Popen(
-    ['git', 'grep', '--name-only',
-     r'#\(include\|import\)\s*["<]%s[>"]' % old_path],
-    stdout=subprocess.PIPE).communicate()
-  includees = out.splitlines()
-
-  for includee in includees:
-    with open(includee) as f:
-      contents = f.read()
-    new_contents = contents.replace('"%s"' % old_path, '"%s"' % new_path)
-    new_contents = new_contents.replace('<%s>' % old_path, '<%s>' % new_path)
-    if new_contents == contents:
-      raise Exception('Error updating include in file %s' % includee)
-    with open(includee, 'w') as f:
-      f.write(new_contents)
-
-
-def main():
-  if not os.path.isdir('.git'):
-    print 'Fatal: You must run from the root of a git checkout.'
-    return 1
-  args = sys.argv[1:]
-  if len(args) != 2:
-    print 'Usage: move_file.py FROM_PATH TO_PATH\n\n%s' % __doc__
-    return 1
-  MoveFile(args[0], args[1])
-  return 0
-
-
-if __name__ == '__main__':
-  sys.exit(main())