Restore SEBPatch

SafeExamBrowser.Configuration.Contracts/DataCompression/IDataCompressor.cs

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+/*
+ * Copyright (c) 2024 ETH Zürich, IT Services
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using System.IO;
+
+namespace SafeExamBrowser.Configuration.Contracts.DataCompression
+{
+	/// <summary>
+	/// Defines the functionality for data compression and decompression.
+	/// </summary>
+	public interface IDataCompressor
+	{
+		/// <summary>
+		/// Compresses the data from the given stream.
+		/// </summary>
+		Stream Compress(Stream data);
+
+		/// <summary>
+		/// Decompresses the data from the given stream.
+		/// </summary>
+		Stream Decompress(Stream data);
+
+		/// <summary>
+		/// Indicates whether the given stream holds compressed data.
+		/// </summary>
+		bool IsCompressed(Stream data);
+
+		/// <summary>
+		/// Decompresses the specified number of bytes from the beginning of the given stream.
+		/// </summary>
+		byte[] Peek(Stream data, int count);
+	}
+}