Question

我正在使用一个.NET控制台应用程序，它在控制台中使用颜色和光标位置，我想将它的输出重定向到tcp套接字。从这个应用程序重定向文本很容易，我可以这样做没有问题，但我还需要重定向光标位置和颜色以获得完整的效果，据我所知，System.Console没有内置的方法可以做这一点。

但是，我知道如果我可以访问应用程序的源代码，我可以实现自己的类来模仿System.Console，这样我就可以替换任何Console实例。使用MyConsole。然后可以序列化所有控制台调用并将它们传递给tcp套接字或任何其他流。

所以基本上.NET应用程序有很多控制台调用，如：

<%@taglib prefix="sw" uri="/WEB-INF/sw.tld" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@taglib prefix="menu" tagdir="/WEB-INF/
<div id="js-search-box" class="search-box">
    <label>
        <input id="div_id_${param.itemId}" type="text" placeholder="   <fmt:message key="search"/>">
        <i class="fa fa-search"></i>
    </label>
</div>

如果我有权访问源代码，我可以这样编写自己的类：

Console.WriteLine("blah");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.CursorLeft = 15;

，您明白了，然后用ConsoleWithTCP替换所有System.Console引用，即：

    class ConsoleWithTCP
{
    public const char CMD_INDICATOR = (char)01; //this is the ascii 'start of heading' character. I'll use it to denote the start and end of a console command
    public const char CMD_END_INDICATOR = (char)02; //this is the ascii 'start of text' character. I'll use it to denote the end of a console command

    public static void WriteLine(object obj) => WriteLine(obj.ToString());
    public static void WriteLine(string format, params object[] args) => WriteLine(String.Format(format, args));
    public static void WriteLine(string format, object arg0) => WriteLine(String.Format(format, arg0));
    public static void WriteLine() => Write(Console.Out.NewLine);
    public static void WriteLine(string line) => Write(line + Console.Out.NewLine);

    public static void Write(string format, object arg0) => Write(String.Format(format, arg0));
    public static void Write(string format, params object[] args) => Write(String.Format(format, args));
    public static void Write(object obj) => Write(obj.ToString());
    public static void Write(string content)
    {
        //escape any cmd_indicators
        string cmdReplace = CMD_INDICATOR + "CMD_INDICATOR:" + CMD_END_INDICATOR;
        content.Replace(CMD_INDICATOR.ToString(), cmdReplace);

        //escape any cmd_end_indicators
        cmdReplace = CMD_INDICATOR + "CMD_END_INDICATOR:" + CMD_END_INDICATOR;
        content.Replace(CMD_END_INDICATOR.ToString(), cmdReplace);

        Console.Write(content);
        //also write to a TCP stream or a file
    }

    public static void WriteCmd(string cmdName, string data = "")
    {
        //make sure the command and data contain no special characters
        if (   data.Contains(CMD_INDICATOR)
            || cmdName.Contains(CMD_INDICATOR)
            || data.Contains(CMD_END_INDICATOR)
            || cmdName.Contains(CMD_END_INDICATOR))
        {
            throw new InvalidDataException("The data string cannot contain an ascii character 01");
        }

        string cmd = CMD_INDICATOR + cmdName + ":" + data + CMD_END_INDICATOR;
        //write the serialized command to a TCP stream or a file
    }


    public static void Clear()
    {
        Console.Clear();
        WriteCmd("Clear");
    }

    public static ConsoleColor ForegroundColor
    {
        get { return Console.ForegroundColor; }
        set
        {
            Console.ForegroundColor = value;
            WriteCmd("ForegroundColor", value.ToString());
        }
    }


    public static int CursorLeft
    {
        get { return Console.CursorLeft;}
        set
        {
            Console.CursorLeft = value;
            WriteCmd("CursorLeft", value.ToString());
        }
    }
}

有没有办法可以强制.NET为我执行此操作而无需修改源代码？

使用自定义类覆盖/替换System.Console

0 个答案: