@echo off


::  -------- Run the Greenstone Librarian Interface --------

:: This script must be run from within the directory in which it lives
if exist gli.bat goto start
    echo This script must be run from the directory in which it resides.
    goto exit

:start
if "%OS%" == "Windows_NT" goto findGSDL
    :: Invoke a new command processor to ensure there's enough environment space
    if "%1" == "Second" goto findGSDL
        command /E:2048 /C %0 Second %1 %2 %3 %4 %5 %6 %7 %8 %9
        goto done


:findGSDL
::  ---- Determine GSDLHOME ----
set GSDLPATH=

:: Some users may set the above line manually
if not "%GSDLPATH%" == "" goto testGSDL

    :: The default location for the GLI is a subdirectory of Greenstone
    set GSDLPATH=..

    :: If it is set, use the GSDLHOME environment variable
    if "%GSDLHOME%" == "" goto testGSDL
	set GSDLPATH=%GSDLHOME%

:testGSDL
:: Check that the Greenstone installation looks OK
echo Checking GSDL: %GSDLPATH%
if exist "%GSDLPATH%\setup.bat" goto prepGSDL
    echo.
    echo The Greenstone installation could not be found, or is incomplete.
    echo Try reinstalling Greenstone then running this script again.
    goto exit

:prepGSDL
:: Setup Greenstone, unless it has already been done
if not "%GSDLHOME%" == "" goto doneGSDL
    call "%GSDLPATH%\setup.bat" SetEnv > nul

:doneGSDL
:: GSDLPATH is no longer needed, since GSDLHOME should now be set
set GSDLPATH=


:findPerl
::  ---- Check Perl exists ----
set PERLPATH=

:: Some users may set the above line manually
if not "%PERLPATH%" == "" goto testPerl

    :: Check if Perl is on the search path
    echo %PATH%| winutil\which perl.exe | winutil\setvar PERLPATH > setperl.bat
    call setperl.bat
    del setperl.bat
    if not "%PERLPATH%" == "" goto testPerl

    :: If not, try GSDLHOME\bin\windows\perl\bin
    if exist "%GSDLHOME%\bin\windows\perl\bin\perl.exe" goto gsdlPerl

    :: Still haven't found anything, so try looking in the registry (gulp!)
    type nul > perl.reg
    regedit /E perl.reg "HKEY_LOCAL_MACHINE\SOFTWARE\Perl"
    type perl.reg > perl.txt
    del perl.reg

    winutil\findperl perl.txt | winutil\setvar PERLPATH > setperl.bat
    del perl.txt
    call setperl.bat
    del setperl.bat

    :: If nothing was found in the registry, we're stuck
    if "%PERLPATH%" == "" goto noPerl

    goto testPerl

:gsdlPerl
    set PERLPATH=%GSDLHOME%\bin\windows\perl\bin

:testPerl
:: Check that a Perl executable has been found
echo Checking Perl: %PERLPATH%
if exist "%PERLPATH%\perl.exe" goto findJava

:noPerl
    echo.
    echo The Greenstone Librarian Interface requires perl in order to operate,
    echo but perl could not be detected on your system. Please ensure that perl
    echo is installed and is on your search path, then rerun this script.
    goto exit


:findJava
:: ---- Check Java exists ----
set JAVAPATH=

:: Some users may set the above line manually
if not "%JAVAPATH%" == "" goto testJava

    :: If it is set, use the JAVAHOME environment variable
    if not "%JAVAHOME%" == "" goto javahome

    :: Check if Java is on the search path
    echo %PATH%| winutil\which java.exe | winutil\setvar JAVAPATH > setjava.bat
    call setjava.bat
    del setjava.bat
    if not "%JAVAPATH%" == "" goto testJava

    :: Still haven't found anything, so try looking in the registry (gulp!)
    type nul > jdk.reg
    regedit /E jdk.reg "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development Kit"
    type jdk.reg > jdk.txt
    del jdk.reg
    type nul > jre.reg
    regedit /E jre.reg "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment"
    type jre.reg > jre.txt
    del jre.reg

    winutil\findjava jdk.txt jre.txt | winutil\setvar JAVAPATH > setjava.bat
    del jdk.txt
    del jre.txt
    call setjava.bat
    del setjava.bat

    :: If nothing was found in the registry, we're stuck
    if "%JAVAPATH%" == "" goto noJava

    set JAVAPATH=%JAVAPATH%\bin
    goto testJava

:javahome
    set JAVAPATH=%JAVAHOME%\bin

:testJava
:: Check that a Java executable has been found
echo Checking Java: %JAVAPATH%
if exist "%JAVAPATH%\java.exe" goto checkGLI

:noJava
    echo.
    echo Failed to locate an appropriate version of Java. You must install a
    echo Java Runtime Environment (version 1.4 or greater) before running the
    echo Greenstone Librarian Interface.
    goto exit


:checkGLI
:: ---- Check that the GLI has been compiled ----
if exist "classes/org/greenstone/gatherer/Gatherer.class" goto runGLI
    echo.
    echo You need to compile the Greenstone Librarian Interface (using makegli.bat)
    echo before running this script.
    goto exit


:runGLI
:: ---- Finally, run the GLI ----
echo.
echo Running the Greenstone Librarian Interface...

:: -Xms32M          To set minimum memory
:: -Xmx32M          To set maximum memory
:: -verbose:gc      To set garbage collection messages
:: -Xincgc          For incremental garbage collection
:: -Xprof           Function call profiling
:: -Xloggc:<file>   Write garbage collection log

"%JAVAPATH%\java" -cp classes/;GLI.jar;lib/apache.jar;lib/calpa.jar;lib/jp.jar;lib/polloxml.jar;lib/qfslib.jar;lib/skinlf.jar;lib/nanoxml.jar org.greenstone.gatherer.Gatherer -gsdl %GSDLHOME% -perl %PERLPATH% %1 %2 %3 %4 %5 %6 %7 %8 %9

echo Done!

:exit
echo.
pause

:: ---- Clean up ----
set PERLPATH=
set JAVAPATH=

:done