我的批处理文件有问题.
它通过执行以下操作自动生成几个程序：
它通过执行以下操作自动生成几个程序：
>设置一些编译标志
>运行’gmake all’
调用“检查错误级别”功能,如果errorlevel 1,退出
所以看起来像这样：
set FLAG=1 ... gmake all call :interactive_check set OTHERFLAG=1 ... gmake all call :interactive_check
有6或7个(可能会增长).所以我做了一个功能来检查错误级别,而不是在每一步复制/粘贴它.
问题是这样的：错误检查是通过一个函数进行的：
:interactive_check if errorlevel 1 ( echo. echo /!\/!\/!\/!\/!\/!\/!\/!\/!\/!\/!\/!\/!\ echo Error in compilation process... exiting echo /!\/!\/!\/!\/!\/!\/!\/!\/!\/!\/!\/!\/!\ echo. cd %root_dir% exit /B 1 ) ELSE ( echo.Continuing to next step ) goto:eof
使用致命的语法错误,如jeb所示,确实会杀死所有批处理,但它也有一个令人讨厌的副作用 – 即在保留SETLOCAL之后的环境变化,即使在批处理结束时它们应该通过隐式ENDLOCAL被丢弃.有关更多信息,请参阅我的DosTips post
SETLOCAL continues after batch termination!.
根据Why does a non-interactive batch script think I’ve pressed control-C?上的信息,我发现了一种清除方法,可以从CALLed例程或脚本中退出所有批处理脚本,并且SETLOCAL之后的所有更改都将被正确丢弃.
@echo off setlocal set test=AFTER main SETLOCAL call :sub echo returning from main NEVER REACHED exit /b :sub setlocal set test=AFTER sub SETLOCAL set test call :ExitBatch echo returning from sub2 NEVER REACHED exit /b :ExitBatch - Cleanly exit batch processing,regardless how many CALLs if not exist "%temp%\ExitBatchYes.txt" call :buildYes call :CtrlC <"%temp%\ExitBatchYes.txt" 1>nul 2>&1 :CtrlC cmd /c exit -1073741510 :buildYes - Establish a Yes file for the language used by the OS pushd "%temp%" set "yes=" copy nul ExitBatchYes.txt >nul for /f "delims=(/ tokens=2" %%Y in ( '"copy /-y nul ExitBatchYes.txt <nul"' ) do if not defined yes set "yes=%%Y" echo %yes%>ExitBatchYes.txt popd exit /b
这是运行上面test.bat的示例输出.您可以看到该脚本从未退出：ExitBatch调用,并且一旦批处理终止,测试变量定义已被正确丢弃.
C:\test>test.bat test=AFTER sub SETLOCAL C:\test>set test Environment variable test not defined C:\test>
ExitBatch例程可以放在自己的ExitBatch.bat脚本中,并放置在PATH中的某个位置,以便可以方便地使用任何批处理脚本.
@echo off :ExitBatch - Cleanly exit batch processing,regardless how many CALLs if not exist "%temp%\ExitBatchYes.txt" call :buildYes call :CtrlC <"%temp%\ExitBatchYes.txt" 1>nul 2>&1 :CtrlC cmd /c exit -1073741510 :buildYes - Establish a Yes file for the language used by the OS pushd "%temp%" set "yes=" copy nul ExitBatchYes.txt >nul for /f "delims=(/ tokens=2" %%Y in ( '"copy /-y nul ExitBatchYes.txt <nul"' ) do if not defined yes set "yes=%%Y" echo %yes%>ExitBatchYes.txt popd exit /b
重要更新：
现在可以使用纯批次来实现强大的异常处理.不仅可以抛出一个可以从任何CALL级别终止所有批处理的异常,而且还可以在更高级别捕获异常,优化特殊异常处理清理代码并恢复处理,或者继续通过另一个抛出来退出！有关更多信息,请参阅Does Windows batch support exception handling?.
