Batch script to unpack the jdk installer into a portable jdk folder

unpackjdk.bat

@echo off

set jdkinstaller=%1

for /F "tokens=* USEBACKQ" %%F in (`powershell -Command "'%jdkinstaller%' -replace '.*(?:\\|/)jdk-(\d)u(\d+)-.*','jdk1.$1.0_$2'"`) do (
  set jdkpath=%%F
)

set PATH=%PATH%;C:\Program Files\7-Zip;C:\Program Files (x86)\7-Zip

echo Unpacking %jdkinstaller% to %jdkpath%

mkdir .%jdkpath%
cd .%jdkpath%
  7z e %jdkinstaller% .rsrc/1033/JAVA_CAB*/*>NUL:
  
  for /F "tokens=* USEBACKQ" %%F in (`dir /B`) do (
    7z e %%F>NUL:
    del %%F
  )
  
  echo Unpacking jdk
  
  7z x tools.zip>NUL:
  del tools.zip
  
  echo Unpacking jars
  
  for /r %%x in (*.pack) do (
    .\bin\unpack200 -r "%%x" "%%~dx%%~px%%~nx.jar"
  )
cd ..

rem rmdir /S /Q %jdkpath%
ren .%jdkpath% %jdkpath%

echo Finished

pause