How to generate C++ .h file with current SVN revision number

@ECHO OFF
for /f "delims=: tokens=1,2" %%a in ('svn info') do (
  if "%%a"=="Revision" (
    set /a RELEASE_REVISION=%%b
  )
)

set SVNVERSIONFILE="svn_current_version.h"
echo #ifndef SVN_CURRENT_VERSION_INFO_H > %SVNVERSIONFILE%
echo #define SVN_CURRENT_VERSION_INFO_H >> %SVNVERSIONFILE%
echo #define SVN_CURRENT_VERSION %RELEASE_REVISION% >> %SVNVERSIONFILE%
echo #endif >> %SVNVERSIONFILE%