@echo off

:: Set all parameters
set repository=%1
set repopath=%2
set user=%3

:: Set path to svnlook
set svnlook=%VISUALSVN_SERVER%bin\svnlook.exe

:: First check that the lock exists already.
:: In that case svnlook prints the lock description.
"%svnlook%" lock "%repository%" %repopath% | findstr /B /L "UUID Token:" > NUL 2>&1

:: If the lock does not exist, do nothing
if ERRORLEVEL 1 exit 0

:: Now check the lock's owner
"%svnlook%" lock "%repository%" %repopath% | findstr /C:"Owner: %user%" > NUL 2>&1

:: If the person locking matches the lock's owner, allow unlocking
if %ERRORLEVEL% EQU 0 exit 0

:: Otherwise, return failure
exit 1