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107 lines
3.0 KiB
107 lines
3.0 KiB
using System;
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using System.Collections.Specialized;
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using System.ComponentModel;
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using System.IO;
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using IPA.Logging;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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namespace IPA.Config.ConfigProviders
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{
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internal class JsonConfigProvider : IConfigProvider
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{
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private JObject jsonObj;
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// TODO: create a wrapper that allows empty object creation
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public dynamic Dynamic => jsonObj;
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public bool HasChanged { get; private set; }
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public DateTime LastModified => File.GetLastWriteTime(Filename + ".json");
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private string _filename;
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public string Filename
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{
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get => _filename;
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set
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{
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if (_filename != null)
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throw new InvalidOperationException("Can only assign to Filename once");
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_filename = value;
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}
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}
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public void Load()
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{
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Logger.config.Debug($"Loading file {Filename}.json");
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var fileInfo = new FileInfo(Filename + ".json");
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if (fileInfo.Exists)
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{
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var json = fileInfo.OpenText().ReadToEnd();
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try
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{
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jsonObj = JObject.Parse(json);
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}
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catch (Exception e)
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{
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Logger.config.Error($"Error parsing JSON in file {Filename}.json; resetting to empty JSON");
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Logger.config.Error(e);
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jsonObj = new JObject();
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File.WriteAllText(fileInfo.FullName, JsonConvert.SerializeObject(jsonObj, Formatting.Indented));
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}
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}
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else
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{
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jsonObj = new JObject();
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}
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SetupListeners();
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}
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private void SetupListeners()
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{
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jsonObj.PropertyChanged += JsonObj_PropertyChanged;
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jsonObj.ListChanged += JsonObj_ListChanged;
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jsonObj.CollectionChanged += JsonObj_CollectionChanged;
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}
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private void JsonObj_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
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{
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HasChanged = true;
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}
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private void JsonObj_ListChanged(object sender, ListChangedEventArgs e)
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{
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HasChanged = true;
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}
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private void JsonObj_PropertyChanged(object sender, PropertyChangedEventArgs e)
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{
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HasChanged = true;
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}
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public T Parse<T>()
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{
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return jsonObj.ToObject<T>();
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}
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public void Save()
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{
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Logger.config.Debug($"Saving file {Filename}.json");
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var fileInfo = new FileInfo(Filename + ".json");
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File.WriteAllText(fileInfo.FullName, JsonConvert.SerializeObject(jsonObj, Formatting.Indented));
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HasChanged = false;
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}
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public void Store<T>(T obj)
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{
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jsonObj = JObject.FromObject(obj);
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SetupListeners();
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HasChanged = true;
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}
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}
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}
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