58 lines
2.0 KiB
C#
58 lines
2.0 KiB
C#
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using System;
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using System.Reflection;
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namespace BinaryDad.Extensions
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{
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/// <summary>
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/// A set of utilities to assist with Console applications
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/// </summary>
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public static class ConsoleHelper
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{
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/// <summary>
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/// Parses command argument flags in the format "-flag1 value -flag2 value2"
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="args">A raw string of arguments</param>
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/// <returns></returns>
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public static T ParseCommandFlags<T>(string args) where T : new()
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{
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return ParseCommandFlags<T>(args.Split(' '));
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}
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/// <summary>
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/// Parses command argument flags in the format "command.exe -flag1 value -flag2 value2"
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="args">Collection of arguments, typically from Program.Main(string[] args)</param>
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/// <returns></returns>
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public static T ParseCommandFlags<T>(string[] args) where T : new()
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{
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// the new parameter instance
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var parameters = new T();
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parameters
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.GetType()
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.GetProperties()
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.EmptyIfNull()
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.ForEach(p =>
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{
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var commandFlagAttribute = p.GetCustomAttribute<CommandFlagAttribute>(true);
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if (commandFlagAttribute != null)
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{
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var valueFlagIndex = args.IndexOf($"-{commandFlagAttribute.Flag}", StringComparer.OrdinalIgnoreCase);
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var valueIndex = valueFlagIndex + 1;
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// find the argument value in the list, convert to the desired type, and set the value
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if (valueFlagIndex >= 0 && args.Length > valueIndex)
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{
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p.SetValue(parameters, args[valueIndex].To(p.PropertyType));
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}
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}
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});
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return parameters;
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}
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}
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}
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