PluralKit/PluralKit.Bot/CommandSystem/ContextArgumentsExt.cs

59 lines
2.2 KiB
C#

using System;
using System.Linq;
namespace PluralKit.Bot
{
public static class ContextArgumentsExt
{
public static string PopArgument(this Context ctx) =>
ctx.Parameters.Pop();
public static string PeekArgument(this Context ctx) =>
ctx.Parameters.Peek();
public static string RemainderOrNull(this Context ctx, bool skipFlags = true) =>
ctx.Parameters.Remainder(skipFlags).Length == 0 ? null : ctx.Parameters.Remainder(skipFlags);
public static bool HasNext(this Context ctx, bool skipFlags = true) =>
ctx.RemainderOrNull(skipFlags) != null;
public static string FullCommand(this Context ctx) =>
ctx.Parameters.FullCommand;
/// <summary>
/// Checks if the next parameter is equal to one of the given keywords. Case-insensitive.
/// </summary>
public static bool Match(this Context ctx, ref string used, params string[] potentialMatches)
{
var arg = ctx.PeekArgument();
foreach (var match in potentialMatches)
{
if (arg.Equals(match, StringComparison.InvariantCultureIgnoreCase))
{
used = ctx.PopArgument();
return true;
}
}
return false;
}
/// <summary>
/// Checks if the next parameter is equal to one of the given keywords. Case-insensitive.
/// </summary>
public static bool Match(this Context ctx, params string[] potentialMatches)
{
string used = null; // Unused and unreturned, we just yeet it
return ctx.Match(ref used, potentialMatches);
}
public static bool MatchFlag(this Context ctx, params string[] potentialMatches)
{
// Flags are *ALWAYS PARSED LOWERCASE*. This means we skip out on a "ToLower" call here.
// Can assume the caller array only contains lowercase *and* the set below only contains lowercase
var flags = ctx.Parameters.Flags();
return potentialMatches.Any(potentialMatch => flags.Contains(potentialMatch));
}
}
}