Initial commit - WPinternals 2.6

2026-06-20 14:11:02 +10:00 · 2018-10-25 22:35:49 +02:00
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+//
+// Copyright (c) 2008-2011, Kenneth Bell
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+namespace DiscUtils.Ntfs
+{
+    using DiscUtils.Compression;
+
+    /// <summary>
+    /// Class whose instances hold options controlling how <see cref="NtfsFileSystem"/> works.
+    /// </summary>
+    public sealed class NtfsOptions : DiscFileSystemOptions
+    {
+        private bool _hideMetaFiles;
+        private bool _hideHiddenFiles;
+        private bool _hideSystemFiles;
+        private bool _hideDosFileNames;
+        private ShortFileNameOption _shortNameCreation;
+        private BlockCompressor _compressor;
+        private bool _readCache;
+        private bool _fileLengthFromDirectoryEntries;
+
+        internal NtfsOptions()
+        {
+            _hideMetaFiles = true;
+            _hideHiddenFiles = true;
+            _hideSystemFiles = true;
+            _hideDosFileNames = true;
+            _compressor = new LZNT1();
+            _readCache = true;
+            _fileLengthFromDirectoryEntries = true;
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether to include file system meta-files when enumerating directories.
+        /// </summary>
+        /// <remarks>Meta-files are those with an MFT (Master File Table) index less than 24.</remarks>
+        public bool HideMetafiles
+        {
+            get { return _hideMetaFiles; }
+            set { _hideMetaFiles = value; }
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether to include hidden files when enumerating directories.
+        /// </summary>
+        public bool HideHiddenFiles
+        {
+            get { return _hideHiddenFiles; }
+            set { _hideHiddenFiles = value; }
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether to include system files when enumerating directories.
+        /// </summary>
+        public bool HideSystemFiles
+        {
+            get { return _hideSystemFiles; }
+            set { _hideSystemFiles = value; }
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether to hide DOS (8.3-style) file names when enumerating directories.
+        /// </summary>
+        public bool HideDosFileNames
+        {
+            get { return _hideDosFileNames; }
+            set { _hideDosFileNames = value; }
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether short (8.3) file names are created automatically.
+        /// </summary>
+        public ShortFileNameOption ShortNameCreation
+        {
+            get { return _shortNameCreation; }
+            set { _shortNameCreation = value; }
+        }
+
+        /// <summary>
+        /// Gets or sets the compression algorithm used for compressing files.
+        /// </summary>
+        public BlockCompressor Compressor
+        {
+            get { return _compressor; }
+            set { _compressor = value; }
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether NTFS-level read caching is used.
+        /// </summary>
+        public bool ReadCacheEnabled
+        {
+            get { return _readCache; }
+            set { _readCache = value; }
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether file length information comes from directory entries or file data.
+        /// </summary>
+        /// <remarks>
+        /// <para>The default (<c>true</c>) is that file length information is supplied by the directory entry
+        /// for a file.  In some circumstances that information may be inaccurate - specifically for files with multiple
+        /// hard links, the directory entries are only updated for the hard link used to open the file.</para>
+        /// <para>Setting this value to <c>false</c>, will always retrieve the latest information from the underlying
+        /// NTFS attribute information, which reflects the true size of the file.</para>
+        /// </remarks>
+        public bool FileLengthFromDirectoryEntries
+        {
+            get { return _fileLengthFromDirectoryEntries; }
+            set { _fileLengthFromDirectoryEntries = value; }
+        }
+
+        /// <summary>
+        /// Returns a string representation of the file system options.
+        /// </summary>
+        /// <returns>A string of the form Show: XX XX XX.</returns>
+        public override string ToString()
+        {
+            return "Show: Normal " + (HideMetafiles ? string.Empty : "Meta ") + (HideHiddenFiles ? string.Empty : "Hidden ") + (HideSystemFiles ? string.Empty : "System ") + (HideDosFileNames ? string.Empty : "ShortNames ");
+        }
+    }
+}