Init

Author: Lamparter

src/Files.App.CsWin32/NativeMethods.txt

@@ -222,3 +222,5 @@ SetCurrentProcessExplicitAppUserModelID
 GdipCreateBitmapFromScan0
 BITMAP
 GetObject
+FindFirstStream
+FindNextStream

src/Files.App/Helpers/Win32/Win32Helper.Storage.cs

@@ -1166,27 +1166,32 @@ public static string ParseSymLink(string path)
 		}
 
 		// https://stackoverflow.com/a/7988352
-		public static IEnumerable<(string Name, long Size)> GetAlternateStreams(string path)
+		public static unsafe IEnumerable<(string Name, long Size)> GetAlternateStreams(string path)
 		{
 			Win32PInvoke.WIN32_FIND_STREAM_DATA findStreamData = new Win32PInvoke.WIN32_FIND_STREAM_DATA();
-			IntPtr hFile = Win32PInvoke.FindFirstStreamW(path, Win32PInvoke.StreamInfoLevels.FindStreamInfoStandard, findStreamData, 0);
 
-			if (hFile.ToInt64() != -1)
+			fixed (char* pszStr = path)
 			{
-				do
+				FindCloseSafeHandle hFile = PInvoke.FindFirstStream(new(pszStr), Windows.Win32.Storage.FileSystem.STREAM_INFO_LEVELS.FindStreamInfoStandard, findStreamData, 0);
+
+				if (hFile.DangerousGetHandle().ToInt64() != -1)
 				{
-					// The documentation for FindFirstStreamW says that it is always a ::$DATA
-					// stream type, but FindNextStreamW doesn't guarantee that for subsequent
-					// streams so we check to make sure
-					if (findStreamData.cStreamName.EndsWith(":$DATA") && findStreamData.cStreamName != "::$DATA")
+					do
 					{
-						yield return (findStreamData.cStreamName, findStreamData.StreamSize);
+						// The documentation for FindFirstStreamW says that it is always a ::$DATA
+						// stream type, but FindNextStreamW doesn't guarantee that for subsequent
+						// streams so we check to make sure
+						if (findStreamData.cStreamName.EndsWith(":$DATA") && findStreamData.cStreamName != "::$DATA")
+						{
+							yield return (findStreamData.cStreamName, findStreamData.StreamSize);
+						}
 					}
-				}
-				while (Win32PInvoke.FindNextStreamW(hFile, findStreamData));
+					while (PInvoke.FindNextStream(hFile, findStreamData));
 
-				Win32PInvoke.FindClose(hFile);
+					PInvoke.FindClose((Windows.Win32.Foundation.HANDLE)hFile);
+				}
 			}
+
 		}
 
 		public static bool GetWin32FindDataForPath(string targetPath, out Win32PInvoke.WIN32_FIND_DATA findData)

src/Files.App/Helpers/Win32/Win32PInvoke.Methods.cs

@@ -340,21 +340,6 @@ public static extern bool GetFileInformationByHandleEx(
 			uint dwBufferSize
 		);
 
-		[DllImport("kernel32.dll", ExactSpelling = true, CharSet = CharSet.Auto, SetLastError = true)]
-		public static extern IntPtr FindFirstStreamW(
-			string lpFileName,
-			StreamInfoLevels InfoLevel,
-			[In, Out, MarshalAs(UnmanagedType.LPStruct)] WIN32_FIND_STREAM_DATA lpFindStreamData,
-			uint dwFlags
-		);
-
-		[DllImport("kernel32.dll", ExactSpelling = true, CharSet = CharSet.Auto, SetLastError = true)]
-		[return: MarshalAs(UnmanagedType.Bool)]
-		public static extern bool FindNextStreamW(
-			IntPtr hndFindFile,
-			[In, Out, MarshalAs(UnmanagedType.LPStruct)] WIN32_FIND_STREAM_DATA lpFindStreamData
-		);
-
 		[DllImport("Shcore.dll", SetLastError = true)]
 		public static extern int GetDpiForMonitor(
 			IntPtr hmonitor,