Fix git depot_tools update flow.

In Windows (already worked correctly in posix): gclient wouldn't correctly update depot_tools when called.

Refactored away the bootstrap depot_tools update flow which only still existed in Windows.

Patch contributed by gab@chromium.org

R=maruel@chromium.org
BUG=
TEST=Running `gclient sync` from src/ and see depot_tools being correctly updated under a git depot_tools checkout.

Review URL: https://chromiumcodereview.appspot.com/9751009

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@132191 0039d316-1c4b-4281-b951-d872f2087c98

README

@@ -33,7 +33,7 @@ This package contains:
 Note: svn and python will be installed automatically if not accessible (on
 Windows only).
 
-To update this distribution manually, run bootstrap\gclient.bat on Windows,
-or bootstrap/gclient.sh on Linux or Mac.
+To update this distribution manually, run .\update_depot_tools.bat on Windows,
+or ./update_depot_tools on Linux or Mac.
 
 To disable automatic updating, set the environment variable DEPOT_TOOLS_UPDATE=0

bootstrap/gclient.bat

 @echo off
-:: Copyright (c) 2009 The Chromium Authors. All rights reserved.
+:: 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.
 
-:: Synchronize the root directory before deferring control back up to it.
-call "%~dp0\update_depot_tools.bat"
+:: IMPORTANT NOTE:
+:: The bootstrap flow has been removed. This file's only purpose is to make the
+:: transition smooth as the previous update script called bootstrap\gclient.bat
+:: The current flow took place on March 21, 2012. This file should be removed
+:: when it is believed everyone has updated since then.
 
-:: Defer control.
-python "%~dp0\..\gclient.py" %*
+:: At this point we know %DEPOT_TOOLS_UPDATE% != 0 as in the previous script
+:: bootstrap\gclient.bat was only called if this was the case.
+
+:: Update the root directory. The previous version only supported svn so there
+:: is no need looking for git here (i.e. if someone has git they can't get to
+:: this point where the bootstrap dir is gone during the update anyways...)
+IF NOT EXIST "%~dp0..\.svn\." GOTO :EOF
+call svn up -q "%~dp0.."
+
+:: Call the updated gclient.bat in the root directory to wrap the update.
+call "%~dp0..\gclient.bat"

bootstrap/gclient.sh

-#!/bin/sh
-# 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.
-
-# This script will try to sync the root and bootstrap directories.
-
-base_dir=$(dirname "$0")
-
-# Skip if $DEPOT_TOOLS_UPDATE==0 or ../.svn/. doesn't exist.
-if [ "X$DEPOT_TOOLS_UPDATE" != "X0" -a -e "$base_dir/../.svn" ]
-then
-  # Update the root directory.
-  svn -q up "$base_dir/.."
-fi
-
-exec python "$base_dir/../gclient.py" "$@"

bootstrap/update_depot_tools.bat

-@echo off
-:: Copyright (c) 2010 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.
-
-:: This batch file will try to sync the root directory.
-
-:: Shall skip automatic update?
-IF "%DEPOT_TOOLS_UPDATE%" == "0" GOTO :EOF
-
-:: We can't sync if ..\.svn\. doesn't exist.
-IF NOT EXIST "%~dp0..\.svn\." GOTO :EOF
-
-:: Sync the .. directory to update the bootstrap at the same time.
-call svn -q up "%~dp0.."

gclient.bat

 @echo off
-:: Copyright (c) 2009 The Chromium Authors. All rights reserved.
+:: 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.
 
-:: This file is a stub to sync .\bootstrap first and defer control to
-:: .\bootstrap\gclient.bat, which will sync back '.'. This is unless auto
-:: update is disabled, were gclient.py is directly called.
-setlocal
+:: Synchronize the root directory before deferring control back to gclient.py.
+call "%~dp0\update_depot_tools.bat"
 
-:: This is required with cygwin only.
-PATH=%~dp0;%PATH%
-
-:: Will download svn and python.
-:: If you don't want to install the depot_tools version of these tools, remove
-:: the 'force' option on the next command. The tools won't be installed only if
-:: not already in the PATH environment variable.
-call "%~dp0bootstrap\win\win_tools.bat" force
-if errorlevel 1 goto :EOF
-
-:: Shall skip automatic update?
-IF "%DEPOT_TOOLS_UPDATE%" == "0" GOTO :SKIP_UPDATE
-:: We can't sync if .\.svn\. doesn't exist.
-IF NOT EXIST "%~dp0.svn\." GOTO :SKIP_UPDATE
-
-:: Sync the bootstrap directory.
-call svn up -q "%~dp0bootstrap"
-:: still continue even in case of error.
-goto :UPDATE
-
-
-:SKIP_UPDATE
-:: Don't bother to try to update any thing.
+:: Defer control.
 python "%~dp0\gclient.py" %*
-goto :EOF
-
-
-:UPDATE
-:: Transfer control to ease the update process. The following lines won't be
-:: executed so don't add any! Specifically, don't use 'call' in the following
-:: line.
-"%~dp0bootstrap\gclient.bat" %*
-goto :EOF

update_depot_tools

@@ -85,8 +85,7 @@ fi
 # We're on POSIX. We can now safely look for svn checkout.
 if [ "X$DEPOT_TOOLS_UPDATE" != "X0" -a -e "$base_dir/.svn" ]
 then
-  # Update the bootstrap directory to stay up-to-date with the latest
-  # depot_tools.
+  # Update the root directory to stay up-to-date with the latest depot_tools.
   BEFORE_REVISION=$(get_svn_revision)
   "$SVN" -q up "$base_dir"
   AFTER_REVISION=$(get_svn_revision)

update_depot_tools.bat

+@echo off
+:: 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.
+
+:: This batch file will try to sync the root directory.
+
+setlocal
+
+:: Will download svn and python.
+:: If you don't want to install the depot_tools version of these tools, remove
+:: the 'force' option on the next command. The tools will be installed only if
+:: not already in the PATH environment variable.
+call "%~dp0bootstrap\win\win_tools.bat" force
+if errorlevel 1 goto :EOF
+
+:: Shall skip automatic update?
+IF "%DEPOT_TOOLS_UPDATE%" == "0" GOTO :EOF
+
+:: We need either .\.svn\. or .\.git\. to be able to sync.
+IF EXIST "%~dp0.svn\." GOTO :SVN_UPDATE
+IF EXIST "%~dp0.git\." GOTO :GIT_UPDATE
+echo Error updating depot_tools, no revision tool found.
+goto :EOF
+
+
+:SVN_UPDATE
+call svn up -q "%~dp0."
+goto :EOF
+
+
+:GIT_UPDATE
+cd /d "%~dp0."
+call git svn rebase -q -q
+goto :EOF