PowerShellUtils

1.0.1

PowerShellUtils/Lib/FsUtil.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
 
namespace PowerShellStandardModule1.Lib;
 
public static class FsUtil
{
    public static IEnumerable<FileSystemInfo> GetChildren(
        DirectoryInfo directory,
        string searchPattern = "*",
        EnumerationOptions? options = null
    )
    {
        options ??= DirectoryUtil.DefaultEnumerationOptions;
        List<FileSystemInfo> results = [];
 
 
        try
        {
            var source = directory.EnumerateFileSystemInfos(searchPattern, options);
 
            // ReSharper disable once LoopCanBeConvertedToQuery
            foreach (var item in source)
            {
                results.Add(item);
            }
        }
        catch (Exception e) when (e is UnauthorizedAccessException or DirectoryNotFoundException)
        {
            Debug.WriteLine(e);
        }
 
        return results;
    }
 
 
    public static IEnumerable<FileSystemInfo> GetChildren(this FileSystemInfo fsItem)
    {
        return fsItem switch
        {
            DirectoryInfo dir => GetChildren(dir),
            _ => []
        };
    }
 
    public static bool HasChild(
        DirectoryInfo directory,
        string searchPattern = "*",
        EnumerationOptions? options = null
    )
    {
        options ??= DirectoryUtil.DefaultEnumerationOptions;
 
        try
        {
            return directory
               .EnumerateFileSystemInfos(searchPattern, options)
               .Any();
        }
        catch (Exception e) when (e is UnauthorizedAccessException or DirectoryNotFoundException)
        {
            Debug.WriteLine(e);
        }
 
        return false;
    }
 
    public static bool HasChild(this FileSystemInfo fsItem)
    {
        return fsItem is DirectoryInfo dir && HasChild(dir);
    }
}