Scala example source code file (tool-windows.tmpl)

This example Scala source code file (tool-windows.tmpl) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

d, dprop=42, drop, g, j, java_home, java_opts, javacmd, the, we

The tool-windows.tmpl Scala example source code

@@echo off

rem ##########################################################################
rem # Copyright 2002-2013 LAMP/EPFL
rem #
rem # This is free software; see the distribution for copying conditions.
rem # There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
rem # PARTICULAR PURPOSE.
rem ##########################################################################

setlocal enableextensions enabledelayedexpansion

set _LINE_TOOLCP=

rem Use "%~1" to handle spaces in paths. See http://ss64.com/nt/syntax-args.html
rem SI-7295 The goto here is needed to avoid problems with `scala Script.cmd "arg(with)paren"`,
rem         we must not evaluate %~2 eagerly, but delayed expansion doesn't seem to allow
rem         removal of quotation marks.
if not [%~1]==[-toolcp] (
  goto :notoolcp
)
shift
set _LINE_TOOLCP=%~1
shift

:notoolcp

rem SI-8358, SI-8368 -- the default should really be false,
rem but I don't want to flip the default during 2.11's RC cycle
set _OVERRIDE_USEJAVACP="-Dscala.usejavacp=true"

rem We keep in _JAVA_PARAMS all -J-prefixed and -D-prefixed arguments
set _JAVA_PARAMS=

if [%1]==[] goto param_afterloop
set _TEST_PARAM=%~1
if not "%_TEST_PARAM:~0,1%"=="-" goto param_afterloop

rem ignore -e "scala code"
if "%_TEST_PARAM:~0,2%"=="-e" (
  shift
  shift
  if [%1]==[] goto param_afterloop
)

set _TEST_PARAM=%~1
if "%_TEST_PARAM:~0,2%"=="-J" (
  set _JAVA_PARAMS=%_TEST_PARAM:~2%
)

if "%_TEST_PARAM:~0,2%"=="-D" (
  rem Only match beginning of the -D option. The relevant bit is 17 chars long.
  if "%_TEST_PARAM:~0,17%"=="-Dscala.usejavacp" (
    set _OVERRIDE_USEJAVACP=
  )
  rem test if this was double-quoted property "-Dprop=42"
  for /F "delims== tokens=1-2" %%G in ("%_TEST_PARAM%") DO (
    if not "%%G" == "%_TEST_PARAM%" (
      rem double quoted: "-Dprop=42" -> -Dprop="42"
      set _JAVA_PARAMS=%%G="%%H"
    ) else if [%2] neq [] (
      rem it was a normal property: -Dprop=42 or -Drop="42"
      set _JAVA_PARAMS=%_TEST_PARAM%=%2
      shift
    )
  )
)

:param_loop
shift

if [%1]==[] goto param_afterloop
set _TEST_PARAM=%~1
if not "%_TEST_PARAM:~0,1%"=="-" goto param_afterloop 

rem ignore -e "scala code"
if "%_TEST_PARAM:~0,2%"=="-e" (
  shift
  shift
  if [%1]==[] goto param_afterloop
)

set _TEST_PARAM=%~1
if "%_TEST_PARAM:~0,2%"=="-J" (
  set _JAVA_PARAMS=%_JAVA_PARAMS% %_TEST_PARAM:~2%
)

if "%_TEST_PARAM:~0,2%"=="-D" (
  rem test if this was double-quoted property "-Dprop=42"
  for /F "delims== tokens=1-2" %%G in ("%_TEST_PARAM%") DO (
    if not "%%G" == "%_TEST_PARAM%" (
      rem double quoted: "-Dprop=42" -> -Dprop="42"
      set _JAVA_PARAMS=%_JAVA_PARAMS% %%G="%%H"
    ) else if [%2] neq [] (
      rem it was a normal property: -Dprop=42 or -Drop="42"
      set _JAVA_PARAMS=%_JAVA_PARAMS% %_TEST_PARAM%=%2
      shift
    )
  )
)
goto param_loop
:param_afterloop

if "%OS%" NEQ "Windows_NT" (
  echo "Warning, your version of Windows is not supported.  Attempting to start scala anyway."
)

@@setlocal
call :set_home

rem We use the value of the JAVACMD environment variable if defined
set _JAVACMD=%JAVACMD%

if not defined _JAVACMD (
  if not "%JAVA_HOME%"=="" (
    if exist "%JAVA_HOME%\bin\java.exe" set "_JAVACMD=%JAVA_HOME%\bin\java.exe"
  )
)

if "%_JAVACMD%"=="" set _JAVACMD=java

rem We use the value of the JAVA_OPTS environment variable if defined
set _JAVA_OPTS=%JAVA_OPTS%
if not defined _JAVA_OPTS set _JAVA_OPTS=@javaflags@

rem We append _JAVA_PARAMS java arguments to JAVA_OPTS if necessary
if defined _JAVA_PARAMS set _JAVA_OPTS=%_JAVA_OPTS% %_JAVA_PARAMS%

set _TOOL_CLASSPATH=@classpath@
if "%_TOOL_CLASSPATH%"=="" (
  for %%f in ("!_SCALA_HOME!\lib\*") do call :add_cpath "%%f"
  for /d %%f in ("!_SCALA_HOME!\lib\*") do call :add_cpath "%%f"
)

if not "%_LINE_TOOLCP%"=="" call :add_cpath "%_LINE_TOOLCP%"

set _PROPS=-Dscala.home="!_SCALA_HOME!" -Denv.emacs="%EMACS%" %_OVERRIDE_USEJAVACP% @properties@

rem echo "%_JAVACMD%" %_JAVA_OPTS% %_PROPS% -cp "%_TOOL_CLASSPATH%" @class@ @toolflags@ %*
"%_JAVACMD%" %_JAVA_OPTS% %_PROPS% -cp "%_TOOL_CLASSPATH%" @class@ @toolflags@ %*
goto end

rem ##########################################################################
rem # subroutines

:add_cpath
  if "%_TOOL_CLASSPATH%"=="" (
    set _TOOL_CLASSPATH=%~1
  ) else (
    set _TOOL_CLASSPATH=%_TOOL_CLASSPATH%;%~1
  )
goto :eof

rem Variable "%~dps0" works on WinXP SP2 or newer
rem (see http://support.microsoft.com/?kbid=833431)
rem set _SCALA_HOME=%~dps0..
:set_home
  set _BIN_DIR=
  for %%i in (%~sf0) do set _BIN_DIR=%_BIN_DIR%%%~dpsi
  set _SCALA_HOME=%_BIN_DIR%..
goto :eof

:end
@@endlocal

REM exit code fix, see http://stackoverflow.com/questions/4632891/exiting-batch-with-exit-b-x-where-x-1-acts-as-if-command-completed-successfu
@@"%COMSPEC%" /C exit %errorlevel% >nul