PowerShellUtils

1.0.0

PowerShellUtils/Lib/PsUtil.cs

using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Management.Automation;
 
namespace PowerShellStandardModule1.Lib;
 
public static class PsUtil
{
    public static string SerializePsResult(this IReadOnlyCollection<PSObject> psResult) =>
        psResult
           .FirstOrDefault()
          ?.ToString() ??
        "";
 
 
    public static Collection<PSObject> InvokeWithValue(
        this ScriptBlock block,
        object? value,
        Dictionary<string, ScriptBlock>? functionsToDefine = null
    )
    {
        functionsToDefine ??= new();
        var variable = new PSVariable("_", value);
        return block.InvokeWithContext(functionsToDefine, [variable]);
    }
 
    public static PSObject GetFirst(this Collection<PSObject> src) => src.First();
 
    public static T GetFirst<T>(this Collection<PSObject> src) =>
        GetFirst(src)
           .BaseObject is T t
            ? t
            : throw new PSInvalidOperationException(
                $"The scriptblock did not return the expected type. Expected: {typeof(T).Name} Received : ${src}"
            );
}