Users validation in SVN pre-commit hook
@echo off
REM  user1, user2, user3 are example
set VALID_USERS=user1,user2,user3

set SVNROOT="C:Program FilesCollabNet Subversion Serversvnlook.exe"
set REPOS=%1%
set TXN=%2%

%SVNROOT% author %REPOS% -t %TXN% | findstr /r "^%VALID_USERS%$" >nul
if %errorlevel% EQU 0 (
   echo This is an invalid user 1>&2
   exit 1
) else (
   echo This is valid user 1>&2
   exit 0
)

[/tags]
* = r
@R_SVN_ADMINS = rw

[/tags/r1.0]
@R_SVN_ADMINS = r

REM     Block deletion of folder/file in trunk
%SVNLOOK% changed %REPOS% -t %TXN% | findstr /r "^D.*trunk/.*$" >nul
if %errorlevel%==0 (goto DeleteInTrunkError)

REM     DeleteInTrunkError
REM ------------------------
:DeleteTrunkTagsError
echo. 1>&2
echo Trunk Delete Error: 1>&2
echo     Only Administrator can delete in the trunk folder. 1>&2
echo Commit details: 1>&2
%SVNROOT% changed %REPOS% -t %TXN% 1>&2
exit 1