@ECHO OFF
REM Copyright 2015 Ben Vanik. All Rights Reserved.

SET DIR=%~dp0

SET XENIA_SLN=build\xenia.sln

SET VS14_VCVARSALL="C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat"
SET VS15_VCVARSALL="C:\Program Files (x86)\Microsoft Visual Studio 15.0\VC\vcvarsall.bat"

REM ============================================================================
REM Environment Validation
REM ============================================================================
REM To make life easier we just require everything before we try running.

CALL :check_git
IF %_RESULT% NEQ 0 (
  ECHO ERROR:
  ECHO git must be installed and on PATH.
  GOTO :exit_error
)

CALL :check_python
IF %_RESULT% NEQ 0 (
  ECHO ERROR:
  ECHO Python 2.7 must be installed and on PATH:
  ECHO https://www.python.org/ftp/python/2.7.9/python-2.7.9.msi
  GOTO :exit_error
)

CALL :check_msvc
IF %_RESULT% NEQ 0 (
  ECHO ERROR:
  ECHO Visual Studio 2015 must be installed.
  ECHO.
  ECHO The Community Edition is free and can be downloaded here:
  ECHO https://www.visualstudio.com/downloads/visual-studio-2015-downloads-vs
  ECHO.
  ECHO Once installed, launch the 'Developer Command Prompt for VS2015' and run
  ECHO this script again.
  GOTO :exit_error
)
CALL %VS14_VCVARSALL% amd64

SET CLANG_FORMAT=""
SET LLVM_CLANG_FORMAT="C:\Program Files (x86)\LLVM\bin\clang-format.exe"
IF EXIST %LLVM_CLANG_FORMAT% (
  SET CLANG_FORMAT=%LLVM_CLANG_FORMAT%
) ELSE (
  1>NUL 2>NUL CMD /c where clang-format
  IF %ERRORLEVEL% NEQ 0 (
    SET CLANG_FORMAT="clang-format"
  )
)

REM ============================================================================
REM Command Parsing
REM ============================================================================
SET _RESULT=-2
REM Ensure a command has been passed.
IF -%1-==-- GOTO :show_help
REM Dispatch to handler (:perform_foo).
2>NUL CALL :perform_%1 %*
IF %_RESULT% EQU -2 GOTO :show_help
IF %_RESULT% EQU -1 GOTO :exit_nop
IF %_RESULT% EQU 0 GOTO :exit_success
GOTO :exit_error

:exit_success
ECHO.
ECHO OK
EXIT /b 0

:exit_error
ECHO.
ECHO Error: %_RESULT%
EXIT /b 1

:exit_nop
ECHO.
ECHO (no actions performed)
EXIT /b 0


REM ============================================================================
REM xb help
REM ============================================================================
:show_help
SETLOCAL
ECHO.
ECHO Usage: xb COMMAND [options]
ECHO.
ECHO Commands:
ECHO.
ECHO   xb setup
ECHO     Initializes dependencies and prepares build environment.
ECHO.
ECHO   xb pull [--rebase]
ECHO     Fetches latest changes from github and rebuilds dependencies.
ECHO.
ECHO   xb premake
ECHO     Regenerates Visual Studio projects and makefiles.
ECHO.
ECHO   xb proto
ECHO     Regenerates protocol files (*.fbs).
ECHO.
ECHO   xb edit
ECHO     Opens Visual Studio with `xenia.sln`.
ECHO.
ECHO   xb build [--checked OR --debug OR --release] [--force]
ECHO     Initializes dependencies and prepares build environment.
ECHO.
ECHO   xb gentests
ECHO     Generates test binaries (under src/xenia/cpu/frontend/testing/bin/).
ECHO     Run after modifying test .s files.
ECHO.
ECHO   xb test [--checked OR --debug OR --release] [--continue]
ECHO     Runs automated tests. Tests must have been built with `xb build`.
ECHO.
ECHO   xb clean
ECHO     Cleans normal build artifacts to force a rebuild.
ECHO.
ECHO   xb nuke
ECHO     Resets branch and build environment to defaults to unhose state.
ECHO.
ECHO   xb lint [--all] [--origin]
ECHO     Runs linter on local changes (or entire codebase).
ECHO.
ECHO   xb format [--all] [--origin]
ECHO     Runs linter/auto-formatter on local changes (or entire codebase).
ECHO.
ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb setup
REM ============================================================================
:perform_setup
SETLOCAL
ECHO Setting up the build environment...

ECHO.
ECHO ^> git submodule update --init --recursive
git submodule update --init --recursive
IF %ERRORLEVEL% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to initialize git submodules
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ECHO.
ECHO ^> build_tools/premake ...
CALL :run_premake
IF %_RESULT% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to run premake
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb pull
REM ============================================================================
:perform_pull
SETLOCAL
SET REBASE=0
SHIFT
:perform_pull_args
IF "%~1"=="" GOTO :perform_pull_parsed
IF "%~1"=="--" GOTO :perform_pull_parsed
IF "%~1"=="--rebase" (SET REBASE=1)
SHIFT
GOTO :perform_pull_args
:perform_pull_parsed
ECHO Pulling latest changes and rebuilding dependencies...

ECHO.
ECHO ^> git checkout master
git checkout master
IF %ERRORLEVEL% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to checkout master
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ECHO.
IF %REBASE% EQU 1 (
  ECHO ^> git pull --rebase
  git pull --rebase
) ELSE (
  ECHO ^> git pull
  git pull
)
IF %ERRORLEVEL% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to pull latest changes from git
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ECHO.
ECHO ^> git submodule update --recursive
git submodule update --recursive
IF %ERRORLEVEL% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to update git submodules
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ECHO.
ECHO ^> build_tools/premake ...
CALL :run_premake
IF %_RESULT% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to run premake
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb premake
REM ============================================================================
:perform_premake
SETLOCAL EnableDelayedExpansion
ECHO Generating project files...

ECHO.
ECHO ^> build_tools/premake ...
CALL :run_premake
IF %_RESULT% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to run premake
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb proto
REM ============================================================================
:perform_proto
SETLOCAL EnableDelayedExpansion
ECHO Generating proto files...

SET FLATC=build\bin\Windows\Debug\flatc.exe
IF NOT EXIST %FLATC% (
  SET FLATC=build\bin\Windows\Release\flatc.exe
  IF NOT EXIST %FLATC% (
    ECHO.
    ECHO ERROR: flatc not built - build before running this
    ENDLOCAL & SET _RESULT=1
    GOTO :eof
  )
)

SET FBS_SRCS=src\xenia\debug\proto\
SET CC_OUT=src\xenia\debug\proto\
SET CS_OUT=src\Xenia.Debug\Proto\

SET ANY_ERRORS=0
PUSHD %FBS_SRCS%
FOR %%G in (*.fbs) DO (
  ECHO ^> generating %%~nG...
  POPD
  SET SRC_FILE=%FBS_SRCS%\%%G
  CMD /c build\bin\Windows\Debug\flatc.exe -c -o %CC_OUT% !SRC_FILE! 2>&1
  IF !ERRORLEVEL! NEQ 0 (
    SET ANY_ERRORS=1
  )
  CMD /c build\bin\Windows\Debug\flatc.exe -n -o %CS_OUT% !SRC_FILE! 2>&1
  IF !ERRORLEVEL! NEQ 0 (
    SET ANY_ERRORS=1
  )
  PUSHD %TEST_SRC%
)
POPD
IF %ANY_ERRORS% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to build one or more tests
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb edit
REM ============================================================================
:perform_edit
SETLOCAL
ECHO Launching Visual Studio...

ECHO.
ECHO ^> build_tools/premake ...
CALL :run_premake
IF %_RESULT% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to run premake
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ECHO.
ECHO ^> devenv %XENIA_SLN%
START devenv %XENIA_SLN%

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb build
REM ============================================================================
:perform_build
SETLOCAL
SET CONFIG="debug"
SET FORCE=0
SHIFT
:perform_build_args
IF "%~1"=="" GOTO :perform_build_parsed
IF "%~1"=="--" GOTO :perform_build_parsed
IF "%~1"=="--checked" (SET CONFIG="checked")
IF "%~1"=="--debug" (SET CONFIG="debug")
IF "%~1"=="--release" (SET CONFIG="release")
IF "%~1"=="--force" (SET FORCE=1)
SHIFT
GOTO :perform_build_args
:perform_build_parsed
ECHO Building for config %CONFIG%...

ECHO.
ECHO ^> build_tools/premake ...
CALL :run_premake
IF %_RESULT% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to run premake
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

IF %FORCE% EQU 1 (
  SET DEVENV_COMMAND=/rebuild
) ELSE (
  SET DEVENV_COMMAND=/build
)
ECHO.
ECHO ^> devenv %XENIA_SLN% %DEVENV_COMMAND% %CONFIG%

1>NUL 2>NUL CMD /c where devenv
IF %ERRORLEVEL% NEQ 0 (
  ECHO devenv not found
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

CMD /C devenv %XENIA_SLN% /nologo %DEVENV_COMMAND% %CONFIG%

IF %ERRORLEVEL% NEQ 0 (
  ECHO.
  ECHO ERROR: build failed with errors
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb gentests
REM ============================================================================
:perform_gentests
SETLOCAL EnableDelayedExpansion
ECHO Generating test binaries...

SET BINUTILS=third_party\binutils-ppc-cygwin
SET PPC_AS=%BINUTILS%\powerpc-none-elf-as.exe
SET PPC_LD=%BINUTILS%\powerpc-none-elf-ld.exe
SET PPC_OBJDUMP=%BINUTILS%\powerpc-none-elf-objdump.exe
SET PPC_NM=%BINUTILS%\powerpc-none-elf-nm.exe

SET TEST_SRC=src/xenia/cpu/frontend/testing
SET TEST_SRC_WIN=src\xenia\cpu\frontend\testing
SET TEST_BIN=%TEST_SRC%/bin
SET TEST_BIN_WIN=%TEST_SRC_WIN%\bin
IF NOT EXIST %TEST_BIN_WIN% (mkdir %TEST_BIN_WIN%)

SET ANY_ERRORS=0
PUSHD %TEST_SRC_WIN%
FOR %%G in (*.s) DO (
  ECHO ^> generating %%~nG...
  POPD
  SET SRC_FILE=%TEST_SRC%/%%G
  SET SRC_NAME=%%~nG
  SET OBJ_FILE=%TEST_BIN%/!SRC_NAME!.o
  CMD /c %PPC_AS% -a32 -be -mregnames -mpower7 -maltivec -mvsx -mvmx128 -R -o !OBJ_FILE! !SRC_FILE! 2>&1
  IF !ERRORLEVEL! NEQ 0 (
    SET ANY_ERRORS=1
  )
  %PPC_OBJDUMP% --adjust-vma=0x100000 -Mpower7 -Mvmx128 -D -EB !OBJ_FILE! > %TEST_BIN%/!SRC_NAME!.dis.tmp
  IF !ERRORLEVEL! NEQ 0 (
    SET ANY_ERRORS=1
  )
  REM Eat the first 4 lines to kill the file path that'll differ across machines.
  MORE +4 %TEST_BIN_WIN%\!SRC_NAME!.dis.tmp > %TEST_BIN_WIN%\!SRC_NAME!.dis
  DEL %TEST_BIN_WIN%\!SRC_NAME!.dis.tmp
  CMD /c %PPC_LD% -A powerpc:common32 -melf32ppc -EB -nostdlib --oformat binary -Ttext 0x80000000 -e 0x80000000 -o %TEST_BIN%/!SRC_NAME!.bin !OBJ_FILE! 2>&1
  IF !ERRORLEVEL! NEQ 0 (
    SET ANY_ERRORS=1
  )
  %PPC_NM% --numeric-sort !OBJ_FILE! > %TEST_BIN%/!SRC_NAME!.map
  IF !ERRORLEVEL! NEQ 0 (
    SET ANY_ERRORS=1
  )
  PUSHD %TEST_SRC_WIN%
)
POPD
IF %ANY_ERRORS% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to build one or more tests
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb test
REM ============================================================================
:perform_test
SETLOCAL EnableDelayedExpansion
SET BUILD=1
SET CONFIG="debug"
SET CONTINUE=0
SHIFT
:perform_test_args
IF "%~1"=="" GOTO :perform_test_parsed
IF "%~1"=="--" (
  SHIFT
  GOTO :perform_test_parsed
)
IF "%~1"=="--checked" (SET CONFIG="checked")
IF "%~1"=="--debug" (SET CONFIG="debug")
IF "%~1"=="--release" (SET CONFIG="release")
IF "%~1"=="--continue" (SET CONTINUE=1)
SHIFT
GOTO :perform_test_args
:perform_test_parsed
ECHO Running automated testing for config %CONFIG%...

SET TEST_NAMES=xenia-cpu-frontend-tests
FOR %%G IN (%TEST_NAMES%) DO (
  IF NOT EXIST build\bin\Windows\%CONFIG%\%%G.exe (
    ECHO.
    ECHO ERROR: unable to find `%%G.exe` - ensure it is built.
    ENDLOCAL & SET _RESULT=1
    GOTO :eof
  )
)

SET ANY_FAILED=0
FOR %%G IN (%TEST_NAMES%) DO (
  ECHO.
  ECHO ^> build\bin\Windows\%CONFIG%\%%G.exe %1 %2 %3 %4 %5 %6 %7 %8 %9
  build\bin\Windows\%CONFIG%\%%G.exe %1 %2 %3 %4 %5 %6 %7 %8 %9
  IF !ERRORLEVEL! NEQ 0 (
    SET ANY_FAILED=1
    IF %CONTINUE% EQU 0 (
      ECHO.
      ECHO ERROR: test failed, aborting, use --continue to keep going
      ENDLOCAL & SET _RESULT=1
      GOTO :eof
    ) ELSE (
      ECHO.
      ECHO ERROR: test failed but continuing due to --continue
    )
  )
)
IF %ANY_FAILED% NEQ 0 (
  ECHO.
  ECHO ERROR: one or more tests failed
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb clean
REM ============================================================================
:perform_clean
SETLOCAL
ECHO Cleaning normal build outputs...
ECHO (use nuke to kill all artifacts)

1>NUL 2>NUL CMD /c where devenv
IF %ERRORLEVEL% NEQ 0 (
  ECHO devenv not found
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

SET CONFIG_NAMES=Checked Debug Release
FOR %%G IN (%CONFIG_NAMES%) DO (
  ECHO.
  ECHO ^> devenv %XENIA_SLN% /clean %%G
  CMD /C devenv %XENIA_SLN% /nologo /clean %%G
)

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb nuke
REM ============================================================================
:perform_nuke
SETLOCAL
ECHO Nuking all local changes...
ECHO.

ECHO.
ECHO ^> rmdir /s build
rmdir /s build

ECHO.
ECHO ^> git checkout --hard master
git checkout --hard master

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb lint
REM ============================================================================
:perform_lint
SETLOCAL EnableDelayedExpansion
SET ALL=0
SET HEAD=HEAD
SHIFT
:perform_lint_args
IF "%~1"=="" GOTO :perform_lint_parsed
IF "%~1"=="--" GOTO :perform_lint_parsed
IF "%~1"=="--all" (SET ALL=1)
IF "%~1"=="--origin" (SET HEAD=origin/master)
SHIFT
GOTO :perform_lint_args
:perform_lint_parsed
IF %ALL% EQU 1 (
  ECHO Running code linter on all code...
) ELSE (
  ECHO Running code linter on code staged in git index...
)

IF %CLANG_FORMAT%=="" (
  ECHO.
  ECHO ERROR: clang-format is not on PATH or the standard location.
  ECHO LLVM is available from http://llvm.org/releases/download.html
  ECHO See docs/style_guide.md for instructions on how to get it.
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

SET ANY_ERRORS=0
IF %ALL% NEQ 1 (
  ECHO.
  ECHO ^> git-clang-format
  CMD /c python third_party/clang-format/git-clang-format --binary=%CLANG_FORMAT% --commit=%HEAD% --diff >.difftemp.txt
  FIND /C "did not modify any files" .difftemp.txt >nul
  IF !ERRORLEVEL! EQU 1 (
    SET ANY_ERRORS=1
    CMD /c python third_party/clang-format/git-clang-format --binary=%CLANG_FORMAT% --commit=%HEAD% --diff
  )
  DEL .difftemp.txt
) ELSE (
  PUSHD src
  FOR /R %%G in (*.cc *.c *.h *.inl) DO (
    %CLANG_FORMAT% -output-replacements-xml -style=file %%G >.difftemp.txt
    FIND /C "<replacement " .difftemp.txt >nul
    IF !ERRORLEVEL! EQU 0 (
      SET ANY_ERRORS=1
      ECHO ^> clang-format %%G
      DEL .difftemp.txt
      %CLANG_FORMAT% -style=file %%G > .difftemp.txt
      python ..\tools\diff.py "%%G" .difftemp.txt .difftemp.txt
      TYPE .difftemp.txt
      DEL .difftemp.txt
    )
    DEL .difftemp.txt
  )
  POPD
)
IF %ANY_ERRORS% NEQ 0 (
  ECHO.
  ECHO ERROR: 1+ diffs. Stage changes and run 'xb format' to fix.
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM xb format
REM ============================================================================
:perform_format
SETLOCAL EnableDelayedExpansion
SET ALL=0
SET HEAD=HEAD
SHIFT
:perform_format_args
IF "%~1"=="" GOTO :perform_format_parsed
IF "%~1"=="--" GOTO :perform_format_parsed
IF "%~1"=="--all" (SET ALL=1)
IF "%~1"=="--origin" (SET HEAD=origin/master)
SHIFT
GOTO :perform_format_args
:perform_format_parsed
IF %ALL% EQU 1 (
  ECHO Running code formatter on all code...
) ELSE (
  ECHO Running code formatter on code staged in git index...
)

IF %CLANG_FORMAT%=="" (
  ECHO.
  ECHO ERROR: clang-format is not on PATH or the standard location.
  ECHO LLVM is available from http://llvm.org/releases/download.html
  ECHO See docs/style_guide.md for instructions on how to get it.
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

SET ANY_ERRORS=0
IF %ALL% NEQ 1 (
  ECHO.
  ECHO ^> git-clang-format
  CMD /c python third_party/clang-format/git-clang-format --binary=%CLANG_FORMAT% --commit=%HEAD%
  IF %ERRORLEVEL% NEQ 0 (
    SET ANY_ERRORS=1
  )
) ELSE (
  PUSHD src
  FOR /R %%G in (*.cc *.c *.h *.inl) DO (
    ECHO ^> clang-format %%G
    CMD /C %CLANG_FORMAT% -i -style=file %%G
    IF !ERRORLEVEL! NEQ 0 (
      SET ANY_ERRORS=1
    )
  )
  POPD
  PUSHD third_party\elemental-forms\src
  FOR /R %%G in (*.cc *.c *.h *.inl) DO (
    ECHO ^> clang-format %%G
    CMD /C %CLANG_FORMAT% -i -style=file %%G
    IF !ERRORLEVEL! NEQ 0 (
      SET ANY_ERRORS=1
    )
  )
  POPD
)
IF %ANY_ERRORS% NEQ 0 (
  ECHO.
  ECHO ERROR: 1+ clang-format calls failed - ensure all files are staged
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)

ENDLOCAL & SET _RESULT=0
GOTO :eof


REM ============================================================================
REM Utilities
REM ============================================================================

:check_python
SETLOCAL
1>NUL 2>NUL CMD /c where python
IF %ERRORLEVEL% NEQ 0 (
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)
CMD /c python -c "import sys; sys.exit(1 if not sys.version_info[:2] == (2, 7) else 0)"
IF %ERRORLEVEL% NEQ 0 (
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)
ENDLOCAL & SET _RESULT=0
GOTO :eof

:check_git
1>NUL 2>NUL CMD /c where git
SET _RESULT=%ERRORLEVEL%
GOTO :eof

:check_msvc
SETLOCAL EnableDelayedExpansion
1>NUL 2>NUL CMD /c where devenv
IF %ERRORLEVEL% NEQ 0 (
  IF EXIST %VS15_VCVARSALL% (
    REM VS2015
    ECHO Sourcing Visual Studio settings from %VS15_VCVARSALL%...
    CALL %VS15_VCVARSALL% amd64
  ) ELSE (
    IF EXIST %VS14_VCVARSALL% (
      REM VS2015 CTP/RC
      ECHO Sourcing Visual Studio settings from %VS14_VCVARSALL%...
      CALL %VS14_VCVARSALL% amd64
    )
  )
)
1>NUL 2>NUL CMD /c where devenv
IF %ERRORLEVEL% NEQ 0 (
  REM Still no devenv!
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)
SET HAVE_TOOLS=0
IF "%VS140COMNTOOLS%" NEQ "" (
  IF EXIST "%VS140COMNTOOLS%" (
    REM VS2015 CTP/RC
    SET HAVE_TOOLS=1
  )
)
IF "%VS150COMNTOOLS%" NEQ "" (
  IF EXIST "%VS150COMNTOOLS%" (
    REM VS2015
    SET HAVE_TOOLS=1
  )
)
IF %HAVE_TOOLS% NEQ 1 (
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)
ENDLOCAL & SET _RESULT=0
GOTO :eof

:run_premake
SETLOCAL EnableDelayedExpansion
CALL build_tools\premake.bat --file=premake5.lua --os=windows --test-suite-mode=combined --verbose vs2015
IF %ERRORLEVEL% NEQ 0 (
  ECHO.
  ECHO ERROR: failed to run premake
  ENDLOCAL & SET _RESULT=1
  GOTO :eof
)
ENDLOCAL & SET _RESULT=0
GOTO :eof