python之SVN:Python 预提交脚本总是失败

我找到了一个示例 python 脚本并对其进行了修改以在提交前检查评论。我的问题是 python 解析的评论文本总是以空白结尾。

• 环境:Windows XP
• SVN 版本:svn，版本 1.5.6 (r36142) 编译于 2009 年 3 月 6 日，14:54:47
• python 2.7

预提交.bat

C:\Python27\python %1\hooks\pre-commit.py %1 %2 

预提交.py

import sys, os, string, re 
 
SVNLOOK='C:\\SVN\\bin\\svnlook.exe' 
 
 
# return true or false if this passed string is a valid comment 
def check(comment): 
    #define regular expression 
    print comment 
    p = re.match("[bB][uU][gG]\s([0-9]+|NONE)+", comment) 
    print p 
    return (p != None) #returns false if doesn't match 
 
def result(r, txn, repos, log_msg, log_cmd): 
    if r == 1: 
        sys.stderr.write ("File: " + repos + " Comment: " + txn + "\n" +\ 
                          "Log Msg: " + log_msg + "\n" +\ 
                          "Log Cmd: " + log_cmd + "\n" +\ 
                            "Comments must have the format of \n'Bug X' \n" +\ 
                          "'Comment text' where X is the issue number.\n" +\ 
                          "Use comma to separatemultiple bug id's\n" +\ 
                          "Example:\nBug 1234, 1235\nComment: Fixed things\n" +\ 
                          "Use 'NONE' if there is no bug ID") 
        sys.exit(r) 
 
def main(repos, txn): 
    log_cmd = '%s log %s -t %s' % (SVNLOOK, txn, repos) 
    log_msg = os.popen(log_cmd, 'r').readline().rstrip('\n') 
 
    if check(log_msg): 
        result(0, txn, repos, log_msg, log_cmd) 
    else: 
        result(1, txn, repos, log_msg, log_cmd) 
 
if __name__ == '__main__': 
    if len(sys.argv) < 3: 
        sys.stderr.write("Usage: %s REPOS TXN\n" % (sys.argv[0])) 
    else: 
        main(sys.argv[1], sys.argv[2]) 

出于调试目的，我将变量的打印输出添加到错误消息中。

令人讨厌的是，如果我使用 bat 文件命令，事情似乎工作正常:

pre-commit.bat 只检查空白提交信息:

@echo off   
:: Stops commits that have empty log messages.         
@echo off   
 
setlocal   
 
rem Subversion sends through the path to the repository and transaction id   
set REPOS=%1   
set TXN=%2            
 
 
rem line below ensures at least one character ".", 5 characters require change to "....." 
C:\SVN\bin\svnlook.exe log %REPOS% -t %TXN% | findstr . > nul   
if %errorlevel% gtr 0 (goto err) else exit 0   
 
:err   
echo. 1>&2   
echo Your commit has been blocked because you didn't enter a comment. 1>&2   
echo Write a log message describing the changes made and try again. 1>&2 
echo Thanks 1>&2 
exit 1 

我做错了什么？

请您参考如下方法:

当您通过 Python 运行它时，批处理文件中忽略 Python 设置的错误代码；你会想这样做:

C:\Python27\python %1\hooks\pre-commit.py %1 %2 
exit %ERRORLEVEL% 

引用您的 vaules 也是一个好主意，以确保它们完整地传递给 Python:

C:\Python27\python "%1\hooks\pre-commit.py" "%1" "%2" 
exit %ERRORLEVEL%