使用 System.Diagnostics.Process 在命令行上的文件中进行管道传输 [英] Piping in a file on the command-line using System.Diagnostics.Process

问题描述

我正在尝试运行命令行程序并在文件中进行管道传输.该命令在命令行上运行良好，但我似乎无法让它与 C# 中的 Process 对象一起使用.这是我发出的命令:

I'm trying to run a command-line program and piping in a file. The command works fine on the command-line, but I can't seem to get it to work with the Process object in C#. Here's the command I'm issuing:

C:ServersCollabNet Subversion Serversvnadmin"加载 C:RepositoriesTestLoad

C:Temp est.dump

"C:ServersCollabNet Subversion Serversvnadmin" load C:RepositoriesTestLoad < C:Temp est.dump

这个函数与我传递给它的所有其他命令一起工作正常，除了上面的命令:

This function works fine with all the other commands that I pass to it, except for the command above:

public static bool ExecuteSvnCommand( string command, string arguments, out string result, out string errors )
{
    bool retval = false;
    string output = string.Empty;
    string errorLines = string.Empty;
    Process svnCommand = null;
    var psi = new ProcessStartInfo( command );

    psi.RedirectStandardOutput = true;
    psi.RedirectStandardError = true;
    psi.WindowStyle = ProcessWindowStyle.Hidden;
    psi.UseShellExecute = false;
    psi.CreateNoWindow = true;

    try
    {
        Process.Start( psi );
        psi.Arguments = arguments;
        svnCommand = Process.Start( psi );

        StreamReader myOutput = svnCommand.StandardOutput;
        StreamReader myErrors = svnCommand.StandardError;
        svnCommand.WaitForExit();

        if ( svnCommand.HasExited )
        {
            output = myOutput.ReadToEnd();
            errorLines = myErrors.ReadToEnd();
        }

        // Check for errors
        if ( errorLines.Trim().Length == 0 )
        {
            retval = true;
        }
    }
    catch ( Exception ex )
    {
        string msg = ex.Message;
        errorLines += Environment.NewLine + msg;
    }
    finally
    {
        if (svnCommand != null)
        {
            svnCommand.Close();
        }
    }

    result = output;
        errors = errorLines;

    return retval;
}

我已经尝试了这个函数的几种不同组合，但我不能让它工作.我不断收到系统找不到指定的文件"消息.我已经在这里工作了大约一个星期，我想我需要几眼才能看到我做错了什么.

I've tried several different combinations of this function, but I can't get this to work. I keep getting a "The system cannot find the file specified" message. I've been at this for about a week now, and I think I need a few set of eyes to see what I'm doing wrong.

推荐答案

马克和卢克都给了我正确的方向.我不能使用任何一个答案，因为我必须这样做才能在 Linux 中与 Mono 一起运行.所以我最终按照建议写入了 StandardInput.这是有效的代码:

Both Mark and Luke gave me the right direction to go. I couldn't use either answer because I had to do this so that it could run with Mono in Linux. So I ended up writing to the StandardInput as suggested. Here is the code that works:

public static bool ExecuteSvnCommandWithFileInput( string command, string arguments, string filePath, out string result, out string errors )
{
    bool retval = false;
    string output = string.Empty;
    string errorLines = string.Empty;
    Process svnCommand = null;
    var psi = new ProcessStartInfo( command );

    psi.RedirectStandardInput = true;
    psi.RedirectStandardOutput = true;
    psi.RedirectStandardError = true;
    psi.WindowStyle = ProcessWindowStyle.Hidden;
    psi.UseShellExecute = false;
    psi.CreateNoWindow = true;

    try
    {
        Process.Start( psi );
        psi.Arguments = arguments;
        svnCommand = Process.Start( psi );

        var file = new FileInfo(filePath);
        StreamReader reader = file.OpenText();
        string fileContents = reader.ReadToEnd();
        reader.Close();

        StreamWriter myWriter = svnCommand.StandardInput;
        StreamReader myOutput = svnCommand.StandardOutput;
        StreamReader myErrors = svnCommand.StandardError;

        myWriter.AutoFlush = true;
        myWriter.Write(fileContents);
        myWriter.Close();

        output = myOutput.ReadToEnd();
        errorLines = myErrors.ReadToEnd();

        // Check for errors
        if ( errorLines.Trim().Length == 0 )
        {
            retval = true;
        }
    }
    catch ( Exception ex )
    {
        string msg = ex.Message;
        errorLines += Environment.NewLine + msg;
    }
    finally
    {
        if (svnCommand != null)
        {
            svnCommand.Close();
        }
    }

    result = output;
    errors = errorLines;

    return retval;
}

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