source: main/trunk/greenstone3/bin/script/IPv4.bat

@echo off

rem This script will echo the IPv4 of this windows machine. E.g. 100.200.300.45
rem If passed -format-for-tomcat-context, it will echo the same with a pipe
rem symbol up front and all the . escaped with a "\". E.g. "|100\.200\.300\.45"
rem The 3 spaces in front of the IPv4 match expression ensure we grab the line
rem that starts with "IPv4 Address", not the many others containing "IPv4 Address".
rem Without the spaces, it will grab the last line mentioning "IPv4" (ethernet).

for /f "usebackq tokens=2 delims=:" %%a in (`ipconfig ^| find "   IPv4"`) do (set result=%%a)

:: To lop off the single extra space in front of IPv4 number, end with:
::do (set result=%a& echo %result:~1%)
:: Alternative: for /f "tokens=2 delims=:" %a in ('ipconfig ^| findstr /C:"IPv4 Address"') do echo %a
:: still need to remove space up front for that too.

:: removes extra space in front
set result=%result:~1%

:: The above produces the IPv4 number, e.g. 100.200.300.45


rem Check if we're requested to format the IPv4 for the solr.xml tomcat context file
if [%1]==[] goto done
if not "%1"=="-format-for-tomcat-context" goto done

:: Still need to replace . with \.
:: http://scripts.dragon-it.co.uk/scripts.nsf/docs/batch-search-replace-substitute!OpenDocument&ExpandSection=3&BaseTarget=East&AutoFramed
:: Syntax: %string:SEARCH=REPLACE%
set result=%result:.=\.%

:: http://stackoverflow.com/questions/2541767/what-is-the-proper-way-to-test-if-variable-is-empty-in-a-batch-file-if-not-1
:: Make sure it is not the empty string or a string of spaces
:: Test by setting result to space
::set result= 
set result=%result: =%

::if not "%result%" == "" 
::set result=^|%result%

:: Echo a vertical bar up front, regardless of whether the result is empty
echo ^|%result%
goto fin


:done
echo %result%

:fin