| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| using System; |
| using System.IO; |
| using System.Runtime.Serialization; |
| using System.Runtime.Serialization.Formatters.Binary; |
| using System.Text; |
| |
| namespace Org.Apache.REEF.Utilities |
| { |
| public static class ByteUtilities |
| { |
| /// <summary> |
| /// Converts a string to a UTF-8 encoded byte array. |
| /// </summary> |
| public static byte[] StringToByteArrays(string s) |
| { |
| return Encoding.UTF8.GetBytes(s); |
| } |
| |
| /// <summary> |
| /// Returns true if the byte array is null or empty. |
| /// </summary> |
| public static bool IsNullOrEmpty(byte[] bytes) |
| { |
| return bytes == null || bytes.Length == 0; |
| } |
| |
| /// <summary> |
| /// Converts from a UTF-8 encoded byte array to a string. |
| /// </summary> |
| public static string ByteArraysToString(byte[] b) |
| { |
| return Encoding.UTF8.GetString(b); |
| } |
| |
| /// <summary> |
| /// Performs a deep copy of a byte array. |
| /// </summary> |
| public static byte[] CopyBytesFrom(byte[] from) |
| { |
| int length = Buffer.ByteLength(from); |
| byte[] to = new byte[length]; |
| Buffer.BlockCopy(from, 0, to, 0, length); |
| return to; |
| } |
| |
| /// <summary> |
| /// Serializes object to a byte array with a <see cref="BinaryFormatter"/>. |
| /// </summary> |
| /// <exception cref="SerializationException">When serialization fails.</exception> |
| public static byte[] SerializeToBinaryFormat(object obj) |
| { |
| using (var memStream = new MemoryStream()) |
| { |
| new BinaryFormatter().Serialize(memStream, obj); |
| return memStream.ToArray(); |
| } |
| } |
| |
| /// <summary> |
| /// Deserializes object from a byte array with a <see cref="BinaryFormatter"/>. |
| /// </summary> |
| /// <exception cref="SerializationException">When deserialization fails.</exception> |
| public static object DeserializeFromBinaryFormat(byte[] bytes) |
| { |
| var formatter = new BinaryFormatter(); |
| using (var memStream = new MemoryStream(bytes)) |
| { |
| return formatter.Deserialize(memStream); |
| } |
| } |
| } |
| } |