source: main/trunk/gli/findjava.bat

@echo off
setlocal enabledelayedexpansion

:: Environment Variables passed in: _VERSION, GLILANG and possibly also
:: GSDLHOME and/or GSDL3SRCHOME.
:: As a result of executing this script, the JAVA_EXECUTABLE and GS_JAVA_HOME
:: environment variables will be set, but only if Perl was found.

:findJava

:: We will already be in the correct folder (GLI folder), which would
:: contain a compiled up search4j.exe if this GLI is part of an installation.
:: If search4j.exe is not there, then it means this is an SVN checkout. 
:: In such a case, it's up to the user checking things out to ensure JAVA_HOME
:: is set and moreover points to the correct version of the Java.

set DISPLAY_MIN_VERSION=1.4
set MIN_VERSION=1.4.0_00
set SEARCH4J_EXECUTABLE=search4j.exe
if exist %SEARCH4J_EXECUTABLE% goto setJexec
if "%_VERSION%" == "" goto tryJava  
    :: _version ends up being 1 instead of empty when GLIHOME is set
    :: If GLIHOME is set, we may have search4j and jre for several OS
    :: Since this is a Windows batch file, set up the windows search4j and especially jre
    if "%_VERSION%" == "1" if not "%GLIHOME%" == "" (
        rem echo @@@ Running standalone client-GLI. Using glihome=!GLIHOME!
        set SEARCH4J_EXECUTABLE=!GLIHOME!\bin\windows\search4j.exe
        set HINT=!GLIHOME!\packages\windows\jre
    )
    :: else we look for a compiled version of search4j in a GS installation
    if "%_VERSION%" == "2" (
        set SEARCH4J_EXECUTABLE=!GSDLHOME!\bin\windows\search4j.exe
        set HINT=!GSDLHOME!\packages\jre
    )
    if "%_VERSION%" == "3" (
        set SEARCH4J_EXECUTABLE=!GSDL3SRCHOME!\bin\search4j.exe
        set HINT=!GSDL3SRCHOME!\packages\jre
    )
    if not exist "%SEARCH4J_EXECUTABLE%" goto tryJava

:setJexec
    "%SEARCH4J_EXECUTABLE%" -e -m "%MIN_VERSION%" -p "%HINT%" | winutil\setvar.exe JAVA_EXECUTABLE > %TMP%\set_java_executable.bat
    call "%TMP%\set_java_executable.bat"
    del "%TMP%\set_java_executable.bat"
    
    if "%JAVA_EXECUTABLE%" == "" goto noJava
    echo Java:
    echo %JAVA_EXECUTABLE%
    echo.

    :: we know that works, so we can set the local javahome (for Greenstone) as well
    "%SEARCH4J_EXECUTABLE%" -m "%MIN_VERSION%" -p "%HINT%" | winutil\setvar.exe GS_JAVA_HOME > %TMP%\set_java_home.bat
    call "%TMP%\set_java_home.bat"
    del "%TMP%\set_java_home.bat"

    ::set JAVA_HOME=%GS_JAVA_HOME%
    ::set PATH=%GS_JAVA_HOME%\bin;%PATH%
    
:: found java, JAVA_EXECUTABLE and GS_JAVA_HOME env vars set, can exit this script
    goto exit

:tryJava
if "%JAVA_HOME%" == "" goto noJavaHome
if not exist "%JAVA_HOME%\bin\java.exe" goto noJavaHome
    if "%GLILANG%" == "en" (
        echo.
        echo ***************************************************************************
            echo WARNING: 
        echo Java Runtime not bundled with this Greenstone installation.
        echo Using JAVA_HOME: !JAVA_HOME!
        echo ^(NOTE: this needs to be %DISPLAY_MIN_VERSION% or higher.^)
        echo ***************************************************************************
        echo.
    )
    :: Try to use this version
    set JAVA_EXECUTABLE=%JAVA_HOME%\bin\java
    set GS_JAVA_HOME=%JAVA_HOME%
    ::set JAVA_HOME=%GS_JAVA_HOME%
    ::set PATH=%GS_JAVA_HOME%\bin;%PATH%
    goto exit

:noJavaHome
    :: Check if Java is on the search path
    echo %PATH%| winutil\which.exe java.exe | winutil\setvar.exe MYJAVAPATH > setjava.bat
    call setjava.bat
    del setjava.bat

    if  "%MYJAVAPATH%" == "" goto noJava
    set JAVA_EXECUTABLE=%MYJAVAPATH%\java
    echo JAVA_HOME not set, using java found on search path %JAVA_EXECUTABLE%
    goto exit

:noJava
    echo.
    if "%GLILANG%" == "en" (
        echo Failed to locate an appropriate version of Java. You must install a
            echo Java Runtime Environment ^(version %DISPLAY_MIN_VERSION% or greater^) before running the
            echo Greenstone Librarian Interface.
    )

    if "%GLILANG%" == "es" (
        echo No se pudo localizar una versi¢n apropiada de Java. Usted deber 
            echo instalar un Ambiente de Ejecuci¢n Java ^(versi¢n %DISPLAY_MIN_VERSION% o superior^)
            echo antes de correr la Interfaz de la Biblioteca Digital Greenstone.
    )

    if "%GLILANG%" == "fr" (
        echo Une version ad?quate de Java n'a pas pu ?tre localis?e. Vous devez
            echo installer un Java Runtime Environment ^(version %DISPLAY_MIN_VERSION% ou sup?rieur^)
            echo avant de d?marrer Greenstone Librarian Interface.
    )

    if "%GLILANG%" == "ru" (
        echo ¥ 〠«®áì ®¯à¥€¥«šâì ¬¥áâ®­ 宊€¥­š¥ ᮮ⢥âáâ¢ãî饩 ¢¥àᚚ Java.
            echo ?ë €®«Š­ë ãáâ ­®¢šâì Java Runtime Environment ^(¢¥àášî %DISPLAY_MIN_VERSION% š«š ¢ëè¥^) ¯¥à¥€ ¢¢®€®¬
            echo ¡š¡«š®â¥ç­®£® š­â¥àä¥©á  Greenstone.
    )
    goto exit

:exit
set SEARCH4J_EXECUTABLE=
set MIN_VERSION=
set DISPLAY_MIN_VERSION=

endlocal & set JAVA_EXECUTABLE=%JAVA_EXECUTABLE%& set GS_JAVA_HOME=%GS_JAVA_HOME%
::& set JAVA_HOME=%JAVA_HOME%& set PATH=%PATH%

::echo ** JAVA_HOME: %JAVA_HOME%
::echo ** PATH: %PATH%