MegaBites-AI/Windows-powershell

1// Copyright (c) Microsoft Corporation.2// Licensed under the MIT License.3 4#nullable enable5 6using System.Diagnostics.CodeAnalysis;7using System.IO;8using System.Management.Automation;9using System.Runtime.InteropServices;10 11using Microsoft.Win32.SafeHandles;12 13internal static partial class Interop14{15    [SuppressMessage("StyleCop.CSharp.NamingRules", "SA1305:FieldNamesMustNotUseHungarianNotation", Justification = "Keep native struct names.")]16    [SuppressMessage("StyleCop.CSharp.NamingRules", "SA1307:AccessibleFieldsMustBeginWithUpperCaseLetter", Justification = "Keep native struct names.")]17    internal static unsafe partial class Windows18    {19        internal const int MAX_PATH = 260;20 21        internal struct FILE_TIME22        {23            public uint dwLowDateTime;24            public uint dwHighDateTime;25        }26 27        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]28        internal unsafe struct WIN32_FIND_DATA29        {30            internal uint dwFileAttributes;31            internal FILE_TIME ftCreationTime;32            internal FILE_TIME ftLastAccessTime;33            internal FILE_TIME ftLastWriteTime;34            internal uint nFileSizeHigh;35            internal uint nFileSizeLow;36            internal uint dwReserved0;37            internal uint dwReserved1;38            internal fixed char cFileName[MAX_PATH];39            internal fixed char cAlternateFileName[14];40        }41 42        internal sealed class SafeFindHandle : SafeHandleZeroOrMinusOneIsInvalid43        {44            // .NET 8 requires the default constructor to be public45            public SafeFindHandle() : base(true) { }46 47            protected override bool ReleaseHandle()48            {49                return Interop.Windows.FindClose(this.handle);50            }51        }52 53        // We use 'FindFirstFileW' instead of 'FindFirstFileExW' because the latter doesn't work correctly with Unicode file names on FAT32.54        // See https://github.com/PowerShell/PowerShell/issues/1680455        [LibraryImport("api-ms-win-core-file-l1-1-0.dll", EntryPoint = "FindFirstFileW", SetLastError = true, StringMarshalling = StringMarshalling.Utf16)]56        private static partial SafeFindHandle FindFirstFileW(string lpFileName, ref WIN32_FIND_DATA lpFindFileData);57 58        internal static SafeFindHandle FindFirstFile(string lpFileName, ref WIN32_FIND_DATA lpFindFileData)59        {60            lpFileName = Path.TrimEndingDirectorySeparator(lpFileName);61            lpFileName = PathUtils.EnsureExtendedPrefixIfNeeded(lpFileName);62 63            return FindFirstFileW(lpFileName, ref lpFindFileData);64        }65    }66}67