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								@echo off
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								:: Copyright (c) 2016 The Chromium Authors. All rights reserved.
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								:: Use of this source code is governed by a BSD-style license that can be
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								:: found in the LICENSE file.
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								setlocal
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								set CIPD_BACKEND=https://chrome-infra-packages.appspot.com
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								set VERSION_FILE="%~dp0cipd_client_version"
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								set CIPD_BINARY="%~dp0.cipd_client.exe"
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								if not exist %CIPD_BINARY% (
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								  call :CLEAN_BOOTSTRAP
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								  goto :EXEC_CIPD
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								)
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								call :SELF_UPDATE >nul 2>&1
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								if %ERRORLEVEL% neq 0 (
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								  echo CIPD client self-update failed, trying to bootstrap it from scratch... 1>&2
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								  call :CLEAN_BOOTSTRAP
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								)
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								:EXEC_CIPD
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								if %ERRORLEVEL% neq 0 (
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								  echo Failed to bootstrap or update CIPD client 1>&2
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								)
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								if %ERRORLEVEL% equ 0 (
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								  "%CIPD_BINARY%" %*
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								)
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								endlocal & (
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								  set EXPORT_ERRORLEVEL=%ERRORLEVEL%
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								)
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								exit /b %EXPORT_ERRORLEVEL%
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								:: Functions below.
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								::
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								:: See http://steve-jansen.github.io/guides/windows-batch-scripting/part-7-functions.html
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								:: if you are unfamiliar with this madness.
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								:CLEAN_BOOTSTRAP
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								:: To allow this powershell script to run if it was a byproduct of downloading
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								:: and unzipping the depot_tools.zip distribution, we clear the Zone.Identifier
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								:: alternate data stream. This is equivalent to clicking the "Unblock" button
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								:: in the file's properties dialog.
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								echo.>%~dp0.cipd_impl.ps1:Zone.Identifier
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								powershell -NoProfile -ExecutionPolicy RemoteSigned ^
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								    -Command "%~dp0.cipd_impl.ps1" ^
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								    -CipdBinary "%CIPD_BINARY%" ^
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								    -BackendURL "%CIPD_BACKEND%" ^
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								    -VersionFile "%VERSION_FILE%" ^
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								  <nul
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								if %ERRORLEVEL% equ 0 (
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								  :: Need to call SELF_UPDATE to setup .cipd_version file.
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								  call :SELF_UPDATE
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								)
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								exit /B %ERRORLEVEL%
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								:SELF_UPDATE
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								"%CIPD_BINARY%" selfupdate ^
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								    -version-file "%VERSION_FILE%" ^
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								    -service-url "%CIPD_BACKEND%"
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								exit /B %ERRORLEVEL%
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