设置SVN服务器允许修改日志

在使用SVN进行代码版本提交时，经常设置强制填写日志以便记录没次修改的内容，当时有时候需要修改log, 这个时候需要做下配置：

在版本库的hooks目录下加入一个批处理文件：pre-revprop-change.bat

内容如下，每行若存在空格，必须进行删除

@ECHO OFF

:: Set all parameters. Even though most are not used, in case you want to add
:: changes that allow, for example, editing of the author or addition of log messages.
set repository=%1
set revision=%2
set userName=%3
set propertyName=%4
set action=%5


:: Only allow the log message to be changed, but not author, etc.
if /I not "%propertyName%" == "svn:log" goto ERROR_PROPNAME


:: Only allow modification of a log message, not addition or deletion.
if /I not "%action%" == "M" goto ERROR_ACTION


:: Make sure that the new svn:log message is not empty.
set bIsEmpty=true
for /f "tokens=*" %%g in ('find /V ""') do (
set bIsEmpty=false
)
if "%bIsEmpty%" == "true" goto ERROR_EMPTY


goto :eof


:ERROR_EMPTY
echo Empty svn:log messages are not allowed. >&2
goto ERROR_EXIT


:ERROR_PROPNAME
echo Only changes to svn:log messages are allowed. >&2
goto ERROR_EXIT


:ERROR_ACTION
echo Only modifications to svn:log revision properties are allowed. >&2
goto ERROR_EXIT


:ERROR_EXIT
exit /b 1