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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Reflection;
using System.Text.RegularExpressions;
using StardewModdingAPI.Framework.Models;
namespace StardewModdingAPI.Framework
{
/// <summary>Tracks the installed mods.</summary>
internal class ModRegistry : IModRegistry
{
/*********
** Properties
*********/
/// <summary>The registered mod data.</summary>
private readonly List<IMod> Mods = new List<IMod>();
/// <summary>The friendly mod names treated as deprecation warning sources (assembly full name => mod name).</summary>
private readonly IDictionary<string, string> ModNamesByAssembly = new Dictionary<string, string>();
/// <summary>The mod versions which should be disabled due to incompatibility.</summary>
private readonly IncompatibleMod[] IncompatibleMods;
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
/// <param name="incompatibleMods">The mod versions which should be disabled due to incompatibility.</param>
public ModRegistry(IEnumerable<IncompatibleMod> incompatibleMods)
{
this.IncompatibleMods = incompatibleMods.ToArray();
}
/****
** IModRegistry
****/
/// <summary>Get metadata for all loaded mods.</summary>
public IEnumerable<IManifest> GetAll()
{
return this.Mods.Select(p => p.ModManifest);
}
/// <summary>Get metadata for a loaded mod.</summary>
/// <param name="uniqueID">The mod's unique ID.</param>
/// <returns>Returns the matching mod's metadata, or <c>null</c> if not found.</returns>
public IManifest Get(string uniqueID)
{
return this.GetAll().FirstOrDefault(p => p.UniqueID == uniqueID);
}
/// <summary>Get whether a mod has been loaded.</summary>
/// <param name="uniqueID">The mod's unique ID.</param>
public bool IsLoaded(string uniqueID)
{
return this.GetAll().Any(p => p.UniqueID == uniqueID);
}
/****
** Internal methods
****/
/// <summary>Register a mod as a possible source of deprecation warnings.</summary>
/// <param name="mod">The mod instance.</param>
public void Add(IMod mod)
{
this.Mods.Add(mod);
this.ModNamesByAssembly[mod.GetType().Assembly.FullName] = mod.ModManifest.Name;
}
/// <summary>Get all enabled mods.</summary>
public IEnumerable<IMod> GetMods()
{
return (from mod in this.Mods select mod);
}
/// <summary>Get the friendly mod name which handles a delegate.</summary>
/// <param name="delegate">The delegate to follow.</param>
/// <returns>Returns the mod name, or <c>null</c> if the delegate isn't implemented by a known mod.</returns>
public string GetModFrom(Delegate @delegate)
{
return @delegate?.Target != null
? this.GetModFrom(@delegate.Target.GetType())
: null;
}
/// <summary>Get the friendly mod name which defines a type.</summary>
/// <param name="type">The type to check.</param>
/// <returns>Returns the mod name, or <c>null</c> if the type isn't part of a known mod.</returns>
public string GetModFrom(Type type)
{
// null
if (type == null)
return null;
// known type
string assemblyName = type.Assembly.FullName;
if (this.ModNamesByAssembly.ContainsKey(assemblyName))
return this.ModNamesByAssembly[assemblyName];
// not found
return null;
}
/// <summary>Get the friendly name for the closest assembly registered as a source of deprecation warnings.</summary>
/// <returns>Returns the source name, or <c>null</c> if no registered assemblies were found.</returns>
public string GetModFromStack()
{
// get stack frames
StackTrace stack = new StackTrace();
StackFrame[] frames = stack.GetFrames();
if (frames == null)
return null;
// search stack for a source assembly
foreach (StackFrame frame in frames)
{
MethodBase method = frame.GetMethod();
string name = this.GetModFrom(method.ReflectedType);
if (name != null)
return name;
}
// no known assembly found
return null;
}
/// <summary>Get a record indicating why a mod is incompatible (if applicable).</summary>
/// <param name="manifest">The mod manifest.</param>
/// <returns>Returns the incompatibility record if applicable, else <c>null</c>.</returns>
internal IncompatibleMod GetIncompatibilityRecord(IManifest manifest)
{
string key = !string.IsNullOrWhiteSpace(manifest.UniqueID) ? manifest.UniqueID : manifest.EntryDll;
return (
from mod in this.IncompatibleMods
where
mod.ID == key
&& (mod.LowerSemanticVersion == null || !manifest.Version.IsOlderThan(mod.LowerSemanticVersion))
&& !manifest.Version.IsNewerThan(mod.UpperSemanticVersion)
&& (string.IsNullOrWhiteSpace(mod.ForceCompatibleVersion) || !Regex.IsMatch(manifest.Version.ToString(), mod.ForceCompatibleVersion, RegexOptions.IgnoreCase))
select mod
).FirstOrDefault();
}
}
}
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