解析在C＃中的命令行参数的最佳方法？ [英] Best way to parse command line arguments in C#?

问题描述

在建设有参数的控制台应用程序，您可以使用传递给参数主要（字串[] args）。

When building console applications that take parameters, you can use the arguments passed to Main(string[] args).

在过去，我只是索引/环状该数组，做一些常规的前pressions提取值。但是，当命令变得更加复杂，解析可以得到pretty难看。

In the past I've simply indexed/looped that array and done a few regular expressions to extract the values. However, when the commands get more complicated, the parsing can get pretty ugly.

所以我很感兴趣：

• 您使用库


• 模式中使用

假设命令始终坚持共同的标准，如<一个href=\"http://stackoverflow.com/questions/108728/suggestions-for-implemetation-of-a-commnd-line-application-interface\">answered这里。

Assume the commands always adhere to common standards such as answered here.

推荐答案

我强烈建议使用 NDesk.Options （<一个HREF =htt​​p://www.ndesk.org/doc/ndesk-options/>文档）和/或<一个href=\"https://github.com/mono/mono/blob/master/mcs/class/Mono.Options/Mono.Options/Options.cs\">Mono.Options （相同的API，不同的命名空间）。一个<一个href=\"http://www.ndesk.org/doc/ndesk-options/NDesk.Options/OptionSet.html#T%3aNDesk.Options.OptionSet%3aDocs%3aExample:1\">example从文档：

I would strongly suggest using NDesk.Options (Documentation) and/or Mono.Options (same API, different namespace). An example from the documentation:

bool show_help = false;
List<string> names = new List<string> ();
int repeat = 1;

var p = new OptionSet () {
    { "n|name=", "the {NAME} of someone to greet.",
       v => names.Add (v) },
    { "r|repeat=", 
       "the number of {TIMES} to repeat the greeting.\n" + 
          "this must be an integer.",
        (int v) => repeat = v },
    { "v", "increase debug message verbosity",
       v => { if (v != null) ++verbosity; } },
    { "h|help",  "show this message and exit", 
       v => show_help = v != null },
};

List<string> extra;
try {
    extra = p.Parse (args);
}
catch (OptionException e) {
    Console.Write ("greet: ");
    Console.WriteLine (e.Message);
    Console.WriteLine ("Try `greet --help' for more information.");
    return;
}

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