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171 lines
6.5 KiB
171 lines
6.5 KiB
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.Reflection;
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using System.Runtime.CompilerServices;
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using System.Threading.Tasks;
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using IPA.Config.Providers;
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using IPA.Utilities;
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#if NET3
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using Net3_Proxy;
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using Path = Net3_Proxy.Path;
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using Array = Net3_Proxy.Array;
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#endif
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namespace IPA.Config
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{
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/// <summary>
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/// A class to handle updating ConfigProviders automatically
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/// </summary>
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public class Config
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{
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static Config()
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{
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JsonConfigProvider.RegisterConfig();
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}
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/// <summary>
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/// Specifies that a particular parameter is preferred to use a particular <see cref="IConfigProvider" />.
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/// If it is not available, also specifies backups. If none are available, the default is used.
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/// </summary>
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[AttributeUsage(AttributeTargets.Parameter)]
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public sealed class PreferAttribute : Attribute
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{
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/// <summary>
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/// The order of preference for the config type.
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/// </summary>
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/// <value>the list of config extensions in order of preference</value>
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// ReSharper disable once UnusedAutoPropertyAccessor.Global
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public string[] PreferenceOrder { get; private set; }
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/// <inheritdoc />
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/// <summary>
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/// Constructs the attribute with a specific preference list. Each entry is the extension without a '.'
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/// </summary>
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/// <param name="preference">The preferences in order of preference.</param>
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public PreferAttribute(params string[] preference)
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{
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PreferenceOrder = preference;
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}
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}
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/// <summary>
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/// Specifies a preferred config name, instead of using the plugin's name.
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/// </summary>
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[AttributeUsage(AttributeTargets.Parameter)]
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public sealed class NameAttribute : Attribute
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{
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/// <summary>
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/// The name to use for the config.
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/// </summary>
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/// <value>the name to use for the config</value>
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// ReSharper disable once UnusedAutoPropertyAccessor.Global
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public string Name { get; private set; }
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/// <inheritdoc />
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/// <summary>
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/// Constructs the attribute with a specific name.
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/// </summary>
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/// <param name="name">the name to use for the config.</param>
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public NameAttribute(string name)
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{
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Name = name;
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}
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}
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private static readonly Dictionary<string, IConfigProvider> registeredProviders = new Dictionary<string, IConfigProvider>();
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/// <summary>
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/// Registers a <see cref="IConfigProvider"/> to use for configs.
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/// </summary>
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/// <typeparam name="T">the type to register</typeparam>
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public static void Register<T>() where T : IConfigProvider => Register(typeof(T));
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/// <summary>
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/// Registers a <see cref="IConfigProvider"/> to use for configs.
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/// </summary>
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/// <param name="type">the type to register</param>
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public static void Register(Type type)
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{
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var inst = Activator.CreateInstance(type) as IConfigProvider;
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if (inst == null)
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throw new ArgumentException($"Type not an {nameof(IConfigProvider)}");
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if (registeredProviders.ContainsKey(inst.Extension))
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throw new InvalidOperationException($"Extension provider for {inst.Extension} already exists");
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registeredProviders.Add(inst.Extension, inst);
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}
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/// <summary>
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/// Gets a <see cref="Config"/> object using the specified list of preferred config types.
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/// </summary>
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/// <param name="configName">the name of the mod for this config</param>
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/// <param name="extensions">the preferred config types to try to get</param>
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/// <returns>a <see cref="Config"/> using the requested format, or of type JSON.</returns>
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public static Config GetConfigFor(string configName, params string[] extensions)
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{
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var chosenExt = extensions.FirstOrDefault(s => registeredProviders.ContainsKey(s)) ?? "json";
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var provider = registeredProviders[chosenExt];
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var filename = Path.Combine(BeatSaber.UserDataPath, configName + "." + provider.Extension);
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var config = new Config(configName, provider, new FileInfo(filename));
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ConfigRuntime.RegisterConfig(config);
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return config;
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}
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internal static Config GetConfigFor(string modName, ParameterInfo info)
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{
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var prefs = Array.Empty<string>();
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if (info.GetCustomAttribute<PreferAttribute>() is PreferAttribute prefer)
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prefs = prefer.PreferenceOrder;
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if (info.GetCustomAttribute<NameAttribute>() is NameAttribute name)
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modName = name.Name;
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return GetConfigFor(modName, prefs);
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}
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/// <summary>
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/// Gets the name associated with this <see cref="Config"/> object.
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/// </summary>
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public string Name { get; private set; }
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/// <summary>
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/// Gets the <see cref="IConfigProvider"/> associated with this <see cref="Config"/> object.
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/// </summary>
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public IConfigProvider Provider { get; private set; }
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internal IConfigStore Store = null;
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internal readonly FileInfo File;
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/// <summary>
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/// Sets this object's <see cref="IConfigStore"/>. Can only be called once.
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/// </summary>
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/// <param name="store">the <see cref="IConfigStore"/> to add to this instance</param>
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/// <exception cref="InvalidOperationException">If this was called before.</exception>
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public void SetStore(IConfigStore store)
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{
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if (Store != null)
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throw new InvalidOperationException($"{nameof(SetStore)} can only be called once");
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Store = store;
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ConfigRuntime.ConfigChanged();
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}
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/// <summary>
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/// Forces a synchronous load from disk.
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/// </summary>
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public void LoadSync() => LoadAsync().Wait();
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/// <summary>
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/// Forces an asynchronous load from disk.
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/// </summary>
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public Task LoadAsync() => ConfigRuntime.TriggerFileLoad(this);
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private Config(string name, IConfigProvider provider, FileInfo file)
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{
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Name = name; Provider = provider; File = file;
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}
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}
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}
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