[英]Parsing command line arguments using C# CommandLine library
I am using CommandLine library v 1.9.71.2 from nuget. 我正在使用来自nuget的CommandLine库v 1.9.71.2。 Unfortunately documentation is not up to date and I don't understand advanced C# language constructions used for this library, so I couldn't come up with working solution just by watching interface available in library. 不幸的是,文档不是最新的,并且我不了解该库使用的高级C#语言构造,因此我无法仅通过查看库中可用的接口来提出有效的解决方案。
My options class looks like this: 我的选项类如下所示:
class ProgramOptions
{
[Option('l', "spotsL", Required = true, HelpText = "Lowest stock price used for calculations.")]
public double lowestSpot { get; set; }
[Option('h', "spotsH", Required = true, HelpText = "Highest stock price used for calculations.")]
public double highestSpot { get; set; }
[Option('n', "spotsN", Required = true, HelpText = "Number of (equally distributed) stock prices [spotsL,spotsH].")]
public int spotsNumber { get; set; }
[OptionList('m', "maturities", ',', Required = true, HelpText = "Comma separated list of options maturities (as a fraction of a year).")]
public IList<string> maturities { get; set; } //we want double here.
[Option('s', "strike", Required = true, HelpText = "Strike price of options.")]
public double strikePrice { get; set; }
[Option('v', "vol", Required = true, HelpText = "Volatility used for calculation.")]
public double volatility { get; set; }
}
I need only long names of the options, but when I put null
's (as documentation suggests) in place of short names I get compiler errors. 我只需要选项的长名称,但是当我将null
的名称(如文档所示)代替短名称时,会出现编译器错误。 I'd also prefer to have maturities as a list of doubles ( IList<double> maturities
), but IDK how to achieve this - i think with pure CommandLine it works only for list of string
s. 我也希望将成熟度作为IList<double> maturities
精度项列表( IList<double> maturities
),但是IDK如何实现这一点-我认为使用纯CommandLine只能用于string
s列表。
Second part is that I can't parse options from command line args
to the ProgramOptions
object. 第二部分是我无法从命令行args
解析选项到ProgramOptions
对象。 Was trying something like: 正在尝试类似:
class Program
{
static void Main(string[] args)
{
Console.WriteLine(args[1]);
///Parse Command Line
var options = new ProgramOptions();
bool is_succes = Parser.Default.ParseArguments(args, options);
Console.WriteLine("parsed? {0}",is_succes);
Console.WriteLine(options.highestSpot);
Console.WriteLine(options.lowestSpot);
Console.WriteLine(options.maturities.ToString());
Console.WriteLine(options.spotsNumber);
Console.WriteLine(options.strikePrice);
Console.WriteLine(options.volatility);
Console.WriteLine("program working");
}
}
Unfortunately it doesn't work and gives False
in is_succes
variable. 不幸的是,它不起作用,并且在is_succes
变量中给出False
。 All other variables display 0
. 所有其他变量显示为0
。 My command line arguments were 我的命令行参数是 Any chance to get the library to parse something like: 有机会解析该库的任何机会:
/spotsL 10 /spotsH 1000 /spotsN 9 /maturities 1,0.5,0.001 /strike 495 /vol 0.1
and 10
is indeed displayed by te first WriteLine
. 和10
确实是由first WriteLine
显示的。
I'm not too familiar with the CommandLine library, but from a quick look at the documentation , it looks like you need to use a single dash ( -
) for single-character arguments or a double dash ( --
) for multiple-character arguments, ie 我不太熟悉CommandLine库,但是从文档的快速浏览来看,您似乎需要为单字符参数使用单破折号( -
)或对于多字符使用双破折号( --
)。参数,即
--spotsL 10 --spotsH 1000 --spotsN 9 --maturities 1,0.5,0.001 --strike 495 --vol 0.1
Edit: if you really need the input arguments to have slashes, you need to convert them to dashes: 编辑:如果您确实需要输入参数具有斜线,则需要将它们转换为破折号:
public static void FormatArguments(string[] args)
{
for (int i = 0; i < args.Length; i++)
if (args[i].StartsWith("/"))
args[i] = "--" + args[i].Substring(1);
}
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