[SW-386] pysparkling Windows shell script (#225)

(cherry picked from commit fca835a)

bin/pysparkling.cmd

@@ -0,0 +1,6 @@
+@echo off
+
+rem This is the entry point for running Spark shell. To avoid polluting the
+rem environment, it just launches a new cmd to do the real work.
+
+cmd /V /E /C %~dp0pysparkling2.cmd %*

bin/pysparkling2.cmd

@@ -0,0 +1,23 @@
+@echo off
+
+rem Top-level directory for this product
+set TOPDIR=%~dp0..
+call %TOPDIR%\bin\sparkling-env.cmd
+rem Verify there is Spark installation
+call %LIBSW% checkSparkHome
+call %LIBSW% checkSparkVersion
+rem end of checking Sparkling environment
+
+call %LIBSW% :banner
+
+rem setup pysparkling command line
+rem Because of SPARK-18648 we need to put assembly also on driver/executor class paths
+SET SPARK_OPT_JARS=--jars !FAT_JAR_FILE! --conf spark.driver.extraClassPath=!FAT_JAR_FILE! --conf spark.executor.extraClassPath=!FAT_JAR_FILE!
+SET SPARK_OPT_PYFILES=--py-files !PY_EGG_FILE!
+cd %TOPDIR%
+SET PYTHONPATH=%PY_EGG_FILE%:%PYTHONPATH%
+call !SPARK_HOME!/bin/pyspark2.cmd !SPARK_OPT_PYFILES! %SPARK_OPT_JARS% %*
+
+exit /b %ERRORLEVEL%
+rem end of main script
+

bin/sparkling-env.cmd

@@ -15,10 +15,14 @@ for /f "tokens=2 delims==" %%i in ('TYPE %TOPDIR%\gradle.properties ^| findstr /
 
 rem Ensure that scala version contains only major version
 for /f "tokens=1,2 delims=." %%j in ("%SCALA_PARSED_VERSION%") do (@set SCALA_VERSION=%%j.%%k)
+for /f "tokens=1,2 delims=." %%i in ("%SPARK_VERSION%") do (@set SPARK_MAJOR_VERSION=%%i.%%j)
+for /f "tokens=1 delims=-" %%i in ("%VERSION%") do (@set VERSION_WITHOUT_SNAPSHOT=%%i)
 
 rem Fat jar for this distribution
 set FAT_JAR=sparkling-water-assembly_%SCALA_VERSION%-%VERSION%-all.jar
 set FAT_JAR_FILE=%TOPDIR%\assembly\build\libs\%FAT_JAR%
+set PY_EGG=h2o_pysparkling_%SPARK_MAJOR_VERSION%-%VERSION_WITHOUT_SNAPSHOT%-py2.7.egg
+set PY_EGG_FILE=%TOPDIR%\py\build\dist\%PY_EGG%
 
 rem Setup loging and output