mirror of
https://github.com/ShareX/ShareX.git
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214 lines
No EOL
7.4 KiB
C#
214 lines
No EOL
7.4 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 System;
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using System.ComponentModel;
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using System.IO;
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using System.Windows.Forms;
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namespace ShareX.HelpersLib
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{
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public abstract class SettingsBase<T> where T : SettingsBase<T>, new()
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{
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public delegate void SettingsSavedEventHandler(T settings, string filePath, bool result);
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public event SettingsSavedEventHandler SettingsSaved;
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[Browsable(false)]
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public string FilePath { get; private set; }
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[Browsable(false)]
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public string ApplicationVersion { get; set; }
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[Browsable(false)]
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public bool IsFirstTimeRun { get; private set; }
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[Browsable(false)]
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public bool IsUpgrade { get; private set; }
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protected virtual void OnSettingsSaved(string filePath, bool result)
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{
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if (SettingsSaved != null)
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{
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SettingsSaved((T)this, filePath, result);
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}
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}
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public bool Save(string filePath)
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{
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FilePath = filePath;
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ApplicationVersion = Application.ProductVersion;
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bool result = SaveInternal(this, FilePath, true);
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OnSettingsSaved(FilePath, result);
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return result;
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}
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public bool Save()
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{
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return Save(FilePath);
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}
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public void SaveAsync(string filePath)
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{
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TaskEx.Run(() => Save(filePath));
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}
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public void SaveAsync()
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{
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SaveAsync(FilePath);
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}
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public static T Load(string filePath)
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{
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T setting = LoadInternal(filePath, true);
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if (setting != null)
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{
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setting.FilePath = filePath;
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setting.IsFirstTimeRun = string.IsNullOrEmpty(setting.ApplicationVersion);
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setting.IsUpgrade = !setting.IsFirstTimeRun && Helpers.CompareApplicationVersion(setting.ApplicationVersion) < 0;
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}
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return setting;
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}
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private static bool SaveInternal(object obj, string filePath, bool createBackup)
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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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Helpers.CreateDirectoryFromFilePath(filePath);
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string tempFilePath = filePath + ".temp";
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using (FileStream fileStream = new FileStream(tempFilePath, FileMode.Create, FileAccess.Write, FileShare.Read))
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using (StreamWriter streamWriter = new StreamWriter(fileStream))
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using (JsonTextWriter jsonWriter = new JsonTextWriter(streamWriter))
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{
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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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}
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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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private static T LoadInternal(string filePath, bool checkBackup)
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{
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string typeName = typeof(T).Name;
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if (!string.IsNullOrEmpty(filePath))
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{
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DebugHelper.WriteLine("{0} load started: {1}", typeName, filePath);
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try
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{
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if (File.Exists(filePath))
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{
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using (FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
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{
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if (fileStream.Length > 0)
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{
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T settings;
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using (StreamReader streamReader = new StreamReader(fileStream))
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using (JsonTextReader 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.ObjectCreationHandling = ObjectCreationHandling.Replace;
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serializer.Error += (sender, e) => e.ErrorContext.Handled = true;
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settings = serializer.Deserialize<T>(jsonReader);
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}
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if (settings == null)
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{
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throw new Exception(typeName + " object is null.");
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}
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DebugHelper.WriteLine("{0} load finished: {1}", typeName, filePath);
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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: " + filePath);
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}
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if (checkBackup)
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{
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return LoadInternal(filePath + ".bak", 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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}
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} |