Isolate depot_tools update into a separate script.

Also, modify git-cl to also update depot_tools. Otherwise, the git-cl
script never gets updated for folks that only use git-cl but
not gclient. This fixes a bug ChromiumOS developers are currently seeing
where there git-cl checkout is still pointing to src.chromium.org
and not git.chromium.org.

BUG=none
TEST=Verified that git-cl help and gclient help work.

Review URL: http://codereview.chromium.org/3817011

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@62948 0039d316-1c4b-4281-b951-d872f2087c98

gclient

@@ -3,68 +3,8 @@
 # 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 bootstrap directories and then defer control.
-
 base_dir=$(dirname "$0")
 
-# Test git and git --version.
-function test_git {
-  local GITV="$(git --version)" || {
-    echo "git isn't installed, please install it"
-    exit 1
-  }
-
-  GITV="${GITV##* }"          # Only examine last word (i.e. version number)
-  local GITD=( ${GITV//./ } ) # Split version number into decimals
-  if ((GITD[0] < 1 || (GITD[0] == 1 && GITD[1] < 6) )); then
-    echo "git version is ${GITV}, please update to a version later than 1.6"
-    exit 1
-  fi
-}
-
-# Test git svn and git svn --version.
-function test_git_svn {
-  local GITV="$(git svn --version)" || {
-    echo "git-svn isn't installed, please install it"
-    exit 1
-  }
-
-  GITV="${GITV#* version }"   # git svn --version has extra output to remove.
-  GITV="${GITV% (svn*}"
-  local GITD=( ${GITV//./ } ) # Split version number into decimals
-  if ((GITD[0] < 1 || (GITD[0] == 1 && GITD[1] < 6) )); then
-    echo "git version is ${GITV}, please update to a version later than 1.6"
-    exit 1
-  fi
-}
-
-
-# Update git checkouts prior the cygwin check, we don't want to use msysgit.
-if [ "X$DEPOT_TOOLS_UPDATE" != "X0" -a -e "$base_dir/.git" ]
-then
-  cd $base_dir
-  test_git_svn
-  # work around a git-svn --quiet bug
-  OUTPUT=`git svn rebase -q -q`
-  if [[ ! "$OUTPUT" =~ Current.branch ]]; then
-    echo $OUTPUT
-  fi
-  cd - > /dev/null
-fi
-
-# Use the batch file as an entry point if on cygwin.
-if [ "${OSTYPE}" = "cygwin" -a "${TERM}" != "xterm" ]; then
-   ${base_dir}/gclient.bat "$@"
-   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
-  # Update the bootstrap directory to stay up-to-date with the latest
-  # depot_tools.
-  svn -q up "$base_dir"
-fi
+"$base_dir"/update_depot_tools
 
 exec python "$base_dir/gclient.py" "$@"

git-cl

@@ -8,6 +8,8 @@ repo="$base_dir/git_cl_repo"
 url="http://git.chromium.org/git/git-cl.git"
 cur_url=$(git config -f "$repo/.git/config" remote.origin.url)
 
+"$base_dir"/update_depot_tools
+
 if [ -e "$repo" -a "$cur_url" != "$url" ]; then
   # Always override "origin"
   (cd "$repo"; git remote set-url origin $url)

update_depot_tools

@@ -0,0 +1,68 @@
+#!/bin/bash
+# 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 script will try to sync the bootstrap directories and then defer control.
+
+base_dir=$(dirname "$0")
+
+# Test git and git --version.
+function test_git {
+  local GITV="$(git --version)" || {
+    echo "git isn't installed, please install it"
+    exit 1
+  }
+
+  GITV="${GITV##* }"          # Only examine last word (i.e. version number)
+  local GITD=( ${GITV//./ } ) # Split version number into decimals
+  if ((GITD[0] < 1 || (GITD[0] == 1 && GITD[1] < 6) )); then
+    echo "git version is ${GITV}, please update to a version later than 1.6"
+    exit 1
+  fi
+}
+
+# Test git svn and git svn --version.
+function test_git_svn {
+  local GITV="$(git svn --version)" || {
+    echo "git-svn isn't installed, please install it"
+    exit 1
+  }
+
+  GITV="${GITV#* version }"   # git svn --version has extra output to remove.
+  GITV="${GITV% (svn*}"
+  local GITD=( ${GITV//./ } ) # Split version number into decimals
+  if ((GITD[0] < 1 || (GITD[0] == 1 && GITD[1] < 6) )); then
+    echo "git version is ${GITV}, please update to a version later than 1.6"
+    exit 1
+  fi
+}
+
+
+# Update git checkouts prior the cygwin check, we don't want to use msysgit.
+if [ "X$DEPOT_TOOLS_UPDATE" != "X0" -a -e "$base_dir/.git" ]
+then
+  cd $base_dir
+  test_git_svn
+  # work around a git-svn --quiet bug
+  OUTPUT=`git svn rebase -q -q`
+  if [[ ! "$OUTPUT" =~ Current.branch ]]; then
+    echo $OUTPUT
+  fi
+  cd - > /dev/null
+fi
+
+# Use the batch file as an entry point if on cygwin.
+if [ "${OSTYPE}" = "cygwin" -a "${TERM}" != "xterm" ]; then
+   ${base_dir}/gclient.bat "$@"
+   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
+  # Update the bootstrap directory to stay up-to-date with the latest
+  # depot_tools.
+  svn -q up "$base_dir"
+fi