VisualSVN:允许修改svn提交日志(pre-revpro-change hook)

有时候需要对之前版本提交的错误的日志信息进行修改或者进行补充描述：

1、在windows 7( 64位 )下使用TortoiseSVN客户端，选中代码目录，点击右键，选择<显示日志>

在出来的日志列表对话框中，选择某个提交版本，再点击右键，选择<编辑日志信息>，如下图所示：

我们修改原来空白的日志信息

万恶报错信息出现了

这个时候怎么处理呢？？难道SVN不爱我们了！！

由于缺省情况下为安全起见Subversion不允许开发人员修改已提交reversion的日志信息，这样会报错误，提示不能修改以及请SVN管理员安装pre revprop change hook。

visualSVN Server每个Repositories下都有一个hooks文件夹，如下图，已经有一堆tmpl文件，这些文件其实就是linux 的shell脚本模板。

我们先打开pre-revprop-change.tmpl来看看，pre-revpro-change.tmpl就是linux版的pre-revprop-change hook的模板,在linux下赋予执行权限就可以使用。

 #!/bin/sh

 # PRE-REVPROP-CHANGE HOOK
 #
 # The pre-revprop-change hook is invoked before a revision property
 # is added, modified or deleted.  Subversion runs this hook by invoking
 # a program (script, executable, binary, etc.) named 'pre-revprop-change'
 # (for which this file is a template), with the following ordered
 # arguments:
 #
 #   [1] REPOS-PATH   (the path to this repository)
 #   [2] REV          (the revision being tweaked)
 #   [3] USER         (the username of the person tweaking the property)
 #   [4] PROPNAME     (the property being set on the revision)
 #   [5] ACTION       (the property is being 'A'dded, 'M'odified, or 'D'eleted)
 #
 #   [STDIN] PROPVAL  ** the new property value is passed via STDIN.
 #
 # If the hook program exits with success, the propchange happens; but
 # if it exits with failure (non-zero), the propchange doesn't happen.
 # The hook program can use the 'svnlook' utility to examine the
 # existing value of the revision property.
 #
 # WARNING: unlike other hooks, this hook MUST exist for revision
 # properties to be changed.  If the hook does not exist, Subversion
 # will behave as if the hook were present, but failed.  The reason
 # for this is that revision properties are UNVERSIONED, meaning that
 # a successful propchange is destructive;  the old value is gone
 # forever.  We recommend the hook back up the old value somewhere.
 #
 # On a Unix system, the normal procedure is to have 'pre-revprop-change'
 # invoke other programs to do the real work, though it may do the
 # work itself too.
 #
 # Note that 'pre-revprop-change' must be executable by the user(s) who will
 # invoke it (typically the user httpd runs as), and that user must
 # have filesystem-level permission to access the repository.
 #
 # On a Windows system, you should name the hook program
 # 'pre-revprop-change.bat' or 'pre-revprop-change.exe',
 # but the basic idea is the same.
 #
 # The hook program typically does not inherit the environment of
 # its parent process.  For example, a common problem is for the
 # PATH environment variable to not be set to its usual value, so
 # that subprograms fail to launch unless invoked via absolute path.
 # If you're having unexpected problems with a hook program, the
 # culprit may be unusual (or missing) environment variables.
 #
 # Here is an example hook script, for a Unix /bin/sh interpreter.
 # For more examples and pre-written hooks, see those in
 # the Subversion repository at
 # http://svn.apache.org/repos/asf/subversion/trunk/tools/hook-scripts/ and
 # http://svn.apache.org/repos/asf/subversion/trunk/contrib/hook-scripts/

 REPOS="$1"
 REV="$2"
 USER="$3"
 PROPNAME="$4"
 ACTION="$5"

 if [ "$ACTION" = "M" -a "$PROPNAME" = "svn:log" ]; then exit 0; fi

 echo "Changing revision properties other than svn:log is prohibited" >&2
 exit 1

VisualSVN server运行在Windows平台，所以这些hook脚本是不可能能执行的。但只要照着这些hook模板代码的逻辑用bat脚本重写这些脚本，就可以实现windows下的hook.

pre-revprop-change.bat代码如下

 setlocal
 set REPOS=%
 set REV=%
 set USER=%
 set PROPNAME=%
 set ACTION=%
 if not "%ACTION%"=="M" goto refuse
 if not "%PROPNAME%"=="svn:log" goto refuse
 goto OK
 :refuse
 echo Cann't set %PROPNAME%/%ACTION%, only svn:log is allowed 1>&2
 endlocal
 exit
 :OK
 endlocal
 exit 

好了现在重新开始测试

难道SVN不爱我们了吗，不是，原来是我们不懂SVN的心

小技巧

如果不想在中添加bat文件该怎么弄

将之前的 pre-revprop-change.bat中内容直接复制到这个里

好了我们还是测试一下吧