Groovy example source code file (startGroovy.bat)

This example Groovy source code file (startGroovy.bat) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Groovy tags/keywords

cmd_line_args, command_com, cp, cp, find_exe, groovy_home, groovy_home, java_exe, java_home, java_home, java_opts, java_opts, systemroot, userprofile

The Groovy startGroovy.bat source code

@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem                                                                         ##
@rem  Groovy JVM Bootstrap for Windowz                                       ##
@rem                                                                         ##
@rem ##########################################################################

@rem
@rem $Revision: 20052 $ $Date: 2010-05-16 06:56:35 +0200 (So, 16. Mai 2010) $
@rem

@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal

set DIRNAME=%~1
shift

set CLASS=%~1
shift

if exist "%USERPROFILE%/.groovy/preinit.bat" call "%USERPROFILE%/.groovy/preinit.bat"

@rem Determine the command interpreter to execute the "CD" later
set COMMAND_COM="cmd.exe"
if exist "%SystemRoot%\system32\cmd.exe" set COMMAND_COM="%SystemRoot%\system32\cmd.exe"
if exist "%SystemRoot%\command.com" set COMMAND_COM="%SystemRoot%\command.com"

@rem Use explicit find.exe to prevent cygwin and others find.exe from being used
set FIND_EXE="find.exe"
if exist "%SystemRoot%\system32\find.exe" set FIND_EXE="%SystemRoot%\system32\find.exe"
if exist "%SystemRoot%\command\find.exe" set FIND_EXE="%SystemRoot%\command\find.exe"

:check_JAVA_HOME
@rem Make sure we have a valid JAVA_HOME
if not "%JAVA_HOME%" == "" goto have_JAVA_HOME
for %%P in (%PATH%) do if exist %%P\..\bin\java.exe set JAVA_HOME=%%P\..
if not "%JAVA_HOME%" == "" goto valid_JAVA_HOME
java -version 2>NUL
if not ERRORLEVEL 1 goto default_JAVA_EXE

echo.
echo ERROR: Environment variable JAVA_HOME has not been set.
echo Attempting to find JAVA_HOME from PATH also failed.
goto common_error

:have_JAVA_HOME
@rem Remove trailing slash from JAVA_HOME if found
if "%JAVA_HOME:~-1%"=="\" SET JAVA_HOME=%JAVA_HOME:~0,-1%

@rem Validate JAVA_HOME
%COMMAND_COM% /C DIR "%JAVA_HOME%" 2>&1 | %FIND_EXE% /I /C "%JAVA_HOME%" >nul
if not errorlevel 1 goto valid_JAVA_HOME_DIR

echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%

:common_error
echo Please set the JAVA_HOME variable in your environment
echo to match the location of your Java installation.
goto end

:default_JAVA_EXE
set JAVA_EXE=java.exe
goto check_GROOVY_HOME

:valid_JAVA_HOME_DIR
set JAVA_EXE=%JAVA_HOME%\bin\java.exe
if exist "%JAVA_EXE%" goto valid_JAVA_HOME

echo.
echo ERROR: No java.exe found at: %JAVA_EXE%
goto common_error

:valid_JAVA_HOME
if exist "%JAVA_HOME%\lib\tools.jar" set TOOLS_JAR=%JAVA_HOME%\lib\tools.jar

:check_GROOVY_HOME
@rem Define GROOVY_HOME if not set
if "%GROOVY_HOME%" == "" set GROOVY_HOME=%DIRNAME%..

@rem Remove trailing slash from GROOVY_HOME if found
if "%GROOVY_HOME:~-1%"=="\" SET GROOVY_HOME=%GROOVY_HOME:~0,-1%

@rem classpath handling
set _SKIP=2
set CP=
if "x%~1" == "x-cp" set CP=%~2
if "x%~1" == "x-classpath" set CP=%~2
if "x%~1" == "x--classpath" set CP=%~2
if "x" == "x%CP%" goto init
set _SKIP=4
shift
shift

:init
@rem get name of script to launch with full path
set GROOVY_SCRIPT_NAME=%~f1
@rem Get command-line arguments, handling Windowz variants
if not "%OS%" == "Windows_NT" goto win9xME_args
if "%eval[2+2]" == "4" goto 4NT_args

:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=

:win9xME_args_slurp
if "x%~1" == "x" goto execute

rem horrible roll your own arg processing inspired by jruby equivalent

rem escape minus (-d), quotes (-q), star (-s).
set _ARGS=%*
if not defined _ARGS goto execute
set _ARGS=%_ARGS:-=-d%
set _ARGS=%_ARGS:"=-q%
rem Windowz will try to match * with files so we escape it here
rem but it is also a meta char for env var string substitution
rem so it can't be first char here, hack just for common cases.
rem If in doubt use a space or bracket before * if using -e.
set _ARGS=%_ARGS: *= -s%
set _ARGS=%_ARGS:)*=)-s%
set _ARGS=%_ARGS:0*=0-s%
set _ARGS=%_ARGS:1*=1-s%
set _ARGS=%_ARGS:2*=2-s%
set _ARGS=%_ARGS:3*=3-s%
set _ARGS=%_ARGS:4*=4-s%
set _ARGS=%_ARGS:5*=5-s%
set _ARGS=%_ARGS:6*=6-s%
set _ARGS=%_ARGS:7*=7-s%
set _ARGS=%_ARGS:8*=8-s%
set _ARGS=%_ARGS:9*=9-s%

rem prequote all args for 'for' statement
set _ARGS="%_ARGS%"

set _ARG=
:win9xME_args_loop
rem split args by spaces into first and rest
for /f "tokens=1,*" %%i in (%_ARGS%) do call :get_arg "%%i" "%%j"
goto process_arg

:get_arg
rem remove quotes around first arg
for %%i in (%1) do set _ARG=%_ARG% %%~i
rem set the remaining args
set _ARGS=%2
rem remove the leading space we'll add the first time
if "x%_ARG:~0,1%" == "x " set _ARG=%_ARG:~1%
rem return
goto :EOF

:process_arg
if "%_ARG%" == "" goto execute

rem collect all parts of a quoted argument containing spaces
if not "%_ARG:~0,2%" == "-q" goto :argIsComplete
if "%_ARG:~-2%" == "-q" goto :argIsComplete
rem _ARG starts with a quote but does not end with one:
rem  add the next part to _ARG until the matching quote is found
goto :win9xME_args_loop

:argIsComplete
if "x4" == "x%_SKIP%" goto skip_4
if "x3" == "x%_SKIP%" goto skip_3
if "x2" == "x%_SKIP%" goto skip_2
if "x1" == "x%_SKIP%" goto skip_1

rem now unescape -q, -s, -d
set _ARG=%_ARG:-s=*%
set _ARG=%_ARG:-q="%
set _ARG=%_ARG:-d=-%

set CMD_LINE_ARGS=%CMD_LINE_ARGS% %_ARG%
set _ARG=
goto win9xME_args_loop

:skip_4
set _ARG=
set _SKIP=3
goto win9xME_args_loop

:skip_3
set _ARG=
set _SKIP=2
goto win9xME_args_loop

:skip_2
set _ARG=
set _SKIP=1
goto win9xME_args_loop

:skip_1
set _ARG=
set _SKIP=0
goto win9xME_args_loop

:4NT_args
@rem Get arguments from the 4NT Shell from JP Software
set CMD_LINE_ARGS=%$

:execute
@rem Setup the command line
set STARTER_CLASSPATH=%GROOVY_HOME%\lib\@GROOVYJAR@

if exist "%USERPROFILE%/.groovy/init.bat" call "%USERPROFILE%/.groovy/init.bat"

@rem Setting a classpath using the -cp or -classpath option means not to use
@rem the global classpath. Groovy behaves then the same as the java
@rem interpreter
if "x" == "x%CP%" goto empty_cp
:non_empty_cp
set CP=%CP%;.
goto after_cp
:empty_cp
set CP=.
if "x" == "x%CLASSPATH%" goto after_cp
set CP=%CLASSPATH%;%CP%
:after_cp

set STARTER_MAIN_CLASS=org.codehaus.groovy.tools.GroovyStarter
set STARTER_CONF=%GROOVY_HOME%\conf\groovy-starter.conf

if "%JAVA_OPTS%" == "" set JAVA_OPTS="-Xmx128m"
set JAVA_OPTS=%JAVA_OPTS% -Dprogram.name="%PROGNAME%"
set JAVA_OPTS=%JAVA_OPTS% -Dgroovy.home="%GROOVY_HOME%"
if not "%TOOLS_JAR%" == "" set JAVA_OPTS=%JAVA_OPTS% -Dtools.jar="%TOOLS_JAR%"
set JAVA_OPTS=%JAVA_OPTS% -Dgroovy.starter.conf="%STARTER_CONF%"
set JAVA_OPTS=%JAVA_OPTS% -Dscript.name="%GROOVY_SCRIPT_NAME%"

if exist "%USERPROFILE%/.groovy/postinit.bat" call "%USERPROFILE%/.groovy/postinit.bat"

@rem Execute Groovy
"%JAVA_EXE%" %JAVA_OPTS% -classpath "%STARTER_CLASSPATH%" %STARTER_MAIN_CLASS% --main %CLASS% --conf "%STARTER_CONF%" --classpath "%CP%" %CMD_LINE_ARGS%

:end
@rem End local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" endlocal

@rem Optional pause the batch file
if "%GROOVY_BATCH_PAUSE%" == "on" pause
%COMSPEC% /C exit /B %ERRORLEVEL%