mirror of
https://github.com/ShareX/ShareX.git
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199 lines
No EOL
7 KiB
C#
199 lines
No EOL
7 KiB
C#
#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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Copyright (c) 2007-2016 ShareX Team
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using Newtonsoft.Json;
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using Newtonsoft.Json.Converters;
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using Newtonsoft.Json.Serialization;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Runtime.Serialization.Formatters.Binary;
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using System.Xml.Serialization;
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namespace ShareX.HelpersLib
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{
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public enum SerializationType
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{
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Binary,
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Xml,
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Json
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}
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public static class SettingsHelper
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{
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public static bool Save(object obj, string filePath, SerializationType type, bool createBackup = true)
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{
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string typeName = obj.GetType().Name;
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DebugHelper.WriteLine("{0} save started: {1}", typeName, filePath);
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bool isSuccess = false;
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try
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{
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if (!string.IsNullOrEmpty(filePath))
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{
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lock (obj)
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{
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string tempFilePath = filePath + ".temp";
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using (FileStream fs = new FileStream(tempFilePath, FileMode.Create, FileAccess.Write, FileShare.Read))
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{
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Save(obj, fs, type);
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}
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if (File.Exists(filePath))
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{
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if (createBackup)
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{
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File.Copy(filePath, filePath + ".bak", true);
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}
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File.Delete(filePath);
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}
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File.Move(tempFilePath, filePath);
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isSuccess = true;
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}
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}
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}
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catch (Exception e)
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{
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DebugHelper.WriteException(e);
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}
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finally
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{
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DebugHelper.WriteLine("{0} save {1}: {2}", typeName, isSuccess ? "successful" : "failed", filePath);
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}
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return isSuccess;
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}
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public static void Save(object obj, Stream stream, SerializationType type)
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{
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switch (type)
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{
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case SerializationType.Binary:
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new BinaryFormatter().Serialize(stream, obj);
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break;
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case SerializationType.Xml:
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Type t = obj.GetType();
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new XmlSerializer(t).Serialize(stream, obj);
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break;
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case SerializationType.Json:
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StreamWriter streamWriter = new StreamWriter(stream);
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JsonTextWriter jsonWriter = new JsonTextWriter(streamWriter);
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jsonWriter.Formatting = Formatting.Indented;
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JsonSerializer serializer = new JsonSerializer();
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serializer.ContractResolver = new WritablePropertiesOnlyResolver();
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serializer.Converters.Add(new StringEnumConverter());
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serializer.Serialize(jsonWriter, obj);
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jsonWriter.Flush();
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break;
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}
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}
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public static T Load<T>(string path, SerializationType type, bool checkBackup = true) where T : new()
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{
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string typeName = typeof(T).Name;
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if (!string.IsNullOrEmpty(path))
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{
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DebugHelper.WriteLine("{0} load started: {1}", typeName, path);
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try
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{
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if (File.Exists(path))
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{
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using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read))
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{
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if (fs.Length > 0)
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{
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T settings = Load<T>(fs, type);
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if (settings == null) throw new Exception(typeName + " object is null.");
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DebugHelper.WriteLine("{0} load finished: {1}", typeName, path);
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return settings;
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}
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}
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}
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}
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catch (Exception e)
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{
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DebugHelper.WriteException(e, typeName + " load failed");
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}
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if (checkBackup)
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{
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return Load<T>(path + ".bak", type, false);
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}
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}
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DebugHelper.WriteLine("{0} not found. Loading new instance.", typeName);
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return new T();
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}
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public static T Load<T>(Stream stream, SerializationType type)
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{
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T settings;
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switch (type)
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{
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case SerializationType.Binary:
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settings = (T)new BinaryFormatter().Deserialize(stream);
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break;
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default:
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case SerializationType.Xml:
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settings = (T)new XmlSerializer(typeof(T)).Deserialize(stream);
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break;
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case SerializationType.Json:
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using (StreamReader streamReader = new StreamReader(stream))
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using (JsonReader jsonReader = new JsonTextReader(streamReader))
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{
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JsonSerializer serializer = new JsonSerializer();
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serializer.Converters.Add(new StringEnumConverter());
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serializer.Error += (sender, e) => e.ErrorContext.Handled = true;
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serializer.ObjectCreationHandling = ObjectCreationHandling.Replace;
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settings = serializer.Deserialize<T>(jsonReader);
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}
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break;
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}
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return settings;
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}
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}
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internal class WritablePropertiesOnlyResolver : DefaultContractResolver
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{
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protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
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{
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IList<JsonProperty> props = base.CreateProperties(type, memberSerialization);
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return props.Where(p => p.Writable).ToList();
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}
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}
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} |