A refactoring left cygwin busted.

Create an update_depot_tools.bat file to use for updated when on cygwin, and
properly call it from the update_depot_tools shell script and gclient batch
files.

BUG=none
TEST=gclient sync and git cl work again on cygwin.  Can also turn echo on in update_depot_tools.bat to verify updating working correctly.

Review URL: http://codereview.chromium.org/3856006

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@63234 0039d316-1c4b-4281-b951-d872f2087c98

bootstrap/gclient.bat

@@ -3,19 +3,8 @@
 :: 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 and call back gclient.
+:: Synchronize the root directory before deferring control back up to it.
+call "%~dp0\update_depot_tools.bat"
 
-setlocal
-
-:: Shall skip automatic update?
-IF "%DEPOT_TOOLS_UPDATE%" == "0" GOTO :gclient
-
-:: We can't sync if ..\.svn\. doesn't exist.
-IF NOT EXIST "%~dp0..\.svn\." GOTO :gclient
-
-:: Sync the .. directory to update the bootstrap at the same time.
-call svn -q up "%~dp0.."
-
-:gclient
 :: Defer control.
 python "%~dp0\..\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

@@ -5,6 +5,13 @@
 
 base_dir=$(dirname "$0")
 
+# Use the batch file as an entry point if on cygwin.  Needs to happen before
+# the call to update the tools or the update will happen twice.
+if [ "${OSTYPE}" = "cygwin" -a "${TERM}" != "xterm" ]; then
+   ${base_dir}/gclient.bat "$@"
+   exit
+fi
+
 "$base_dir"/update_depot_tools
 
 exec python "$base_dir/gclient.py" "$@"

update_depot_tools

@@ -54,11 +54,10 @@ fi
 
 # Use the batch file as an entry point if on cygwin.
 if [ "${OSTYPE}" = "cygwin" -a "${TERM}" != "xterm" ]; then
-   ${base_dir}/gclient.bat "$@"
-   exit
+  ${base_dir}/bootstrap/update_depot_tools.bat
+  exit
 fi
 
-
 # We're on POSIX (not cygwin). We can now safely look for svn checkout.
 if [ "X$DEPOT_TOOLS_UPDATE" != "X0" -a -e "$base_dir/.svn" ]
 then