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using IPA.Config;
using IPA.Loader.Features;
using IPA.Logging;
using IPA.Utilities;
using Mono.Cecil;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Version = SemVer.Version;
using SemVer;
#if NET4
using Task = System.Threading.Tasks.Task;
using TaskEx = System.Threading.Tasks.Task;
#endif
#if NET3
using Net3_Proxy;
using Path = Net3_Proxy.Path;
using File = Net3_Proxy.File;
using Directory = Net3_Proxy.Directory;
#endif
namespace IPA.Loader
{
/// <summary>
/// A type to manage the loading of plugins.
/// </summary>
internal partial class PluginLoader
{
internal static Task LoadTask() =>
TaskEx.Run(() =>
{
YeetIfNeeded();
LoadMetadata();
Resolve();
ComputeLoadOrder();
FilterDisabled();
FilterWithoutFiles();
ResolveDependencies();
});
internal static void YeetIfNeeded()
{
string pluginDir = UnityGame.PluginsPath;
if (SelfConfig.YeetMods_ && UnityGame.IsGameVersionBoundary)
{
var oldPluginsName = Path.Combine(UnityGame.InstallPath, $"Old {UnityGame.OldVersion} Plugins");
var newPluginsName = Path.Combine(UnityGame.InstallPath, $"Old {UnityGame.GameVersion} Plugins");
if (Directory.Exists(oldPluginsName))
Directory.Delete(oldPluginsName, true);
Directory.Move(pluginDir, oldPluginsName);
if (Directory.Exists(newPluginsName))
Directory.Move(newPluginsName, pluginDir);
else
Directory.CreateDirectory(pluginDir);
}
}
internal static List<PluginMetadata> PluginsMetadata = new List<PluginMetadata>();
internal static List<PluginMetadata> DisabledPlugins = new List<PluginMetadata>();
private static readonly Regex embeddedTextDescriptionPattern = new Regex(@"#!\[(.+)\]", RegexOptions.Compiled | RegexOptions.Singleline);
internal static void LoadMetadata()
{
string[] plugins = Directory.GetFiles(UnityGame.PluginsPath, "*.dll");
try
{
var selfMeta = new PluginMetadata
{
Assembly = Assembly.GetExecutingAssembly(),
File = new FileInfo(Path.Combine(UnityGame.InstallPath, "IPA.exe")),
PluginType = null,
IsSelf = true
};
string manifest;
using (var manifestReader =
new StreamReader(
selfMeta.Assembly.GetManifestResourceStream(typeof(PluginLoader), "manifest.json") ??
throw new InvalidOperationException()))
manifest = manifestReader.ReadToEnd();
selfMeta.Manifest = JsonConvert.DeserializeObject<PluginManifest>(manifest);
PluginsMetadata.Add(selfMeta);
}
catch (Exception e)
{
Logger.loader.Critical("Error loading own manifest");
Logger.loader.Critical(e);
}
foreach (var plugin in plugins)
{
var metadata = new PluginMetadata
{
File = new FileInfo(Path.Combine(UnityGame.PluginsPath, plugin)),
IsSelf = false
};
try
{
var pluginModule = AssemblyDefinition.ReadAssembly(plugin, new ReaderParameters
{
ReadingMode = ReadingMode.Immediate,
ReadWrite = false,
AssemblyResolver = new CecilLibLoader()
}).MainModule;
string pluginNs = "";
foreach (var resource in pluginModule.Resources)
{
const string manifestSuffix = ".manifest.json";
if (!(resource is EmbeddedResource embedded) ||
!embedded.Name.EndsWith(manifestSuffix)) continue;
pluginNs = embedded.Name.Substring(0, embedded.Name.Length - manifestSuffix.Length);
string manifest;
using (var manifestReader = new StreamReader(embedded.GetResourceStream()))
manifest = manifestReader.ReadToEnd();
metadata.Manifest = JsonConvert.DeserializeObject<PluginManifest>(manifest);
break;
}
if (metadata.Manifest == null)
{
#if DIRE_LOADER_WARNINGS
Logger.loader.Error($"Could not find manifest.json for {Path.GetFileName(plugin)}");
#else
Logger.loader.Notice($"No manifest.json in {Path.GetFileName(plugin)}");
#endif
continue;
}
void TryGetNamespacedPluginType(string ns, PluginMetadata meta)
{
foreach (var type in pluginModule.Types)
{
if (type.Namespace != ns) continue;
if (type.HasCustomAttributes)
{
var attr = type.CustomAttributes.FirstOrDefault(a => a.Constructor.DeclaringType.FullName == typeof(PluginAttribute).FullName);
if (attr != null)
{
if (!attr.HasConstructorArguments)
{
Logger.loader.Warn($"Attribute plugin found in {type.FullName}, but attribute has no arguments");
return;
}
var args = attr.ConstructorArguments;
if (args.Count != 1)
{
Logger.loader.Warn($"Attribute plugin found in {type.FullName}, but attribute has unexpected number of arguments");
return;
}
var rtOptionsArg = args[0];
if (rtOptionsArg.Type.FullName != typeof(RuntimeOptions).FullName)
{
Logger.loader.Warn($"Attribute plugin found in {type.FullName}, but first argument is of unexpected type {rtOptionsArg.Type.FullName}");
return;
}
var rtOptionsValInt = (int)rtOptionsArg.Value; // `int` is the underlying type of RuntimeOptions
meta.RuntimeOptions = (RuntimeOptions)rtOptionsValInt;
meta.PluginType = type;
return;
}
}
}
}
var hint = metadata.Manifest.Misc?.PluginMainHint;
if (hint != null)
{
var type = pluginModule.GetType(hint);
if (type != null)
TryGetNamespacedPluginType(hint, metadata);
}
if (metadata.PluginType == null)
TryGetNamespacedPluginType(pluginNs, metadata);
if (metadata.PluginType == null)
{
Logger.loader.Error($"No plugin found in the manifest {(hint != null ? $"hint path ({hint}) or " : "")}namespace ({pluginNs}) in {Path.GetFileName(plugin)}");
continue;
}
Logger.loader.Debug($"Adding info for {Path.GetFileName(plugin)}");
PluginsMetadata.Add(metadata);
}
catch (Exception e)
{
Logger.loader.Error($"Could not load data for plugin {Path.GetFileName(plugin)}");
Logger.loader.Error(e);
ignoredPlugins.Add(metadata, new IgnoreReason(Reason.Error)
{
ReasonText = "An error ocurred loading the data",
Error = e
});
}
}
IEnumerable<string> bareManifests = Directory.GetFiles(UnityGame.PluginsPath, "*.json");
bareManifests = bareManifests.Concat(Directory.GetFiles(UnityGame.PluginsPath, "*.manifest"));
foreach (var manifest in bareManifests)
{ // TODO: maybe find a way to allow a bare manifest to specify an associated file
try
{
var metadata = new PluginMetadata
{
File = new FileInfo(Path.Combine(UnityGame.PluginsPath, manifest)),
IsSelf = false,
IsBare = true,
};
metadata.Manifest = JsonConvert.DeserializeObject<PluginManifest>(File.ReadAllText(manifest));
if (metadata.Manifest.Files.Length < 1)
Logger.loader.Warn($"Bare manifest {Path.GetFileName(manifest)} does not declare any files. " +
$"Dependency resolution and verification cannot be completed.");
Logger.loader.Debug($"Adding info for bare manifest {Path.GetFileName(manifest)}");
PluginsMetadata.Add(metadata);
}
catch (Exception e)
{
Logger.loader.Error($"Could not load data for bare manifest {Path.GetFileName(manifest)}");
Logger.loader.Error(e);
}
}
foreach (var meta in PluginsMetadata)
{ // process description include
var lines = meta.Manifest.Description.Split('\n');
var m = embeddedTextDescriptionPattern.Match(lines[0]);
if (m.Success)
{
if (meta.IsBare)
{
Logger.loader.Warn($"Bare manifest cannot specify description file");
meta.Manifest.Description = string.Join("\n", lines.Skip(1).StrJP()); // ignore first line
continue;
}
var name = m.Groups[1].Value;
string description;
if (!meta.IsSelf)
{
var resc = meta.PluginType.Module.Resources.Select(r => r as EmbeddedResource)
.NonNull()
.FirstOrDefault(r => r.Name == name);
if (resc == null)
{
Logger.loader.Warn($"Could not find description file for plugin {meta.Name} ({name}); ignoring include");
meta.Manifest.Description = string.Join("\n", lines.Skip(1).StrJP()); // ignore first line
continue;
}
using var reader = new StreamReader(resc.GetResourceStream());
description = reader.ReadToEnd();
}
else
{
using var descriptionReader = new StreamReader(meta.Assembly.GetManifestResourceStream(name));
description = descriptionReader.ReadToEnd();
}
meta.Manifest.Description = description;
}
}
}
}
/// <summary>
/// An enum that represents several categories of ignore reasons that the loader may encounter.
/// </summary>
/// <seealso cref="IgnoreReason"/>
public enum Reason
{
/// <summary>
/// An error was thrown either loading plugin information fomr disk, or when initializing the plugin.
/// </summary>
/// <remarks>
/// When this is the set <see cref="Reason"/> in an <see cref="IgnoreReason"/> structure, the member
/// <see cref="IgnoreReason.Error"/> will contain the thrown exception.
/// </remarks>
Error,
/// <summary>
/// The plugin this reason is associated with has the same ID as another plugin whose information was
/// already loaded.
/// </summary>
/// <remarks>
/// When this is the set <see cref="Reason"/> in an <see cref="IgnoreReason"/> structure, the member
/// <see cref="IgnoreReason.RelatedTo"/> will contain the metadata of the already loaded plugin.
/// </remarks>
Duplicate,
/// <summary>
/// The plugin this reason is associated with conflicts with another already loaded plugin.
/// </summary>
/// <remarks>
/// When this is the set <see cref="Reason"/> in an <see cref="IgnoreReason"/> structure, the member
/// <see cref="IgnoreReason.RelatedTo"/> will contain the metadata of the plugin it conflicts with.
/// </remarks>
Conflict,
/// <summary>
/// The plugin this reason is assiciated with is missing a dependency.
/// </summary>
/// <remarks>
/// Since this is only given when a dependency is missing, <see cref="IgnoreReason.RelatedTo"/> will
/// not be set.
/// </remarks>
Dependency,
/// <summary>
/// The plugin this reason is associated with was released for a game update, but is still considered
/// present for the purposes of updating.
/// </summary>
Released,
/// <summary>
/// The plugin this reason is associated with was denied from loading by a <see cref="Features.Feature"/>
/// that it marks.
/// </summary>
Feature,
/// <summary>
/// The plugin this reason is assoicated with is unsupported.
/// </summary>
/// <remarks>
/// Currently, there is no path in the loader that emits this <see cref="Reason"/>, however there may
/// be in the future.
/// </remarks>
Unsupported,
/// <summary>
/// One of the files that a plugin declared in its manifest is missing.
/// </summary>
MissingFiles
}
/// <summary>
/// A structure describing the reason that a plugin was ignored.
/// </summary>
public struct IgnoreReason
{
/// <summary>
/// Gets the ignore reason, as represented by the <see cref="Loader.Reason"/> enum.
/// </summary>
public Reason Reason { get; }
/// <summary>
/// Gets the textual description of the particular ignore reason. This will typically
/// include details about why the plugin was ignored, if it is present.
/// </summary>
public string ReasonText { get; internal set; }
/// <summary>
/// Gets the <see cref="Exception"/> that caused this plugin to be ignored, if any.
/// </summary>
public Exception Error { get; internal set; }
/// <summary>
/// Gets the metadata of the plugin that this ignore was related to, if any.
/// </summary>
public PluginMetadata RelatedTo { get; internal set; }
/// <summary>
/// Initializes an <see cref="IgnoreReason"/> with the provided data.
/// </summary>
/// <param name="reason">the <see cref="Loader.Reason"/> enum value that describes this reason</param>
/// <param name="reasonText">the textual description of this ignore reason, if any</param>
/// <param name="error">the <see cref="Exception"/> that caused this <see cref="IgnoreReason"/>, if any</param>
/// <param name="relatedTo">the <see cref="PluginMetadata"/> this reason is related to, if any</param>
public IgnoreReason(Reason reason, string reasonText = null, Exception error = null, PluginMetadata relatedTo = null)
{
Reason = reason;
ReasonText = reasonText;
Error = error;
RelatedTo = relatedTo;
}
/// <inheritdoc/>
public override bool Equals(object obj)
=> obj is IgnoreReason ir && Equals(ir);
/// <summary>
/// Compares this <see cref="IgnoreReason"/> with <paramref name="other"/> for equality.
/// </summary>
/// <param name="other">the reason to compare to</param>
/// <returns><see langword="true"/> if the two reasons compare equal, <see langword="false"/> otherwise</returns>
public bool Equals(IgnoreReason other)
=> Reason == other.Reason && ReasonText == other.ReasonText
&& Error == other.Error && RelatedTo == other.RelatedTo;
/// <inheritdoc/>
public override int GetHashCode()
{
int hashCode = 778404373;
hashCode = hashCode * -1521134295 + Reason.GetHashCode();
hashCode = hashCode * -1521134295 + EqualityComparer<string>.Default.GetHashCode(ReasonText);
hashCode = hashCode * -1521134295 + EqualityComparer<Exception>.Default.GetHashCode(Error);
hashCode = hashCode * -1521134295 + EqualityComparer<PluginMetadata>.Default.GetHashCode(RelatedTo);
return hashCode;
}
/// <summary>
/// Checks if two <see cref="IgnoreReason"/>s are equal.
/// </summary>
/// <param name="left">the first <see cref="IgnoreReason"/> to compare</param>
/// <param name="right">the second <see cref="IgnoreReason"/> to compare</param>
/// <returns><see langword="true"/> if the two reasons compare equal, <see langword="false"/> otherwise</returns>
public static bool operator ==(IgnoreReason left, IgnoreReason right)
=> left.Equals(right);
/// <summary>
/// Checks if two <see cref="IgnoreReason"/>s are not equal.
/// </summary>
/// <param name="left">the first <see cref="IgnoreReason"/> to compare</param>
/// <param name="right">the second <see cref="IgnoreReason"/> to compare</param>
/// <returns><see langword="true"/> if the two reasons are not equal, <see langword="false"/> otherwise</returns>
public static bool operator !=(IgnoreReason left, IgnoreReason right)
=> !(left == right);
}
internal partial class PluginLoader
{
// keep track of these for the updater; it should still be able to update mods not loaded
// the thing -> the reason
internal static Dictionary<PluginMetadata, IgnoreReason> ignoredPlugins = new Dictionary<PluginMetadata, IgnoreReason>();
internal static void Resolve()
{ // resolves duplicates and conflicts, etc
PluginsMetadata.Sort((a, b) => b.Version.CompareTo(a.Version));
var ids = new HashSet<string>();
var ignore = new Dictionary<PluginMetadata, IgnoreReason>();
var resolved = new List<PluginMetadata>(PluginsMetadata.Count);
foreach (var meta in PluginsMetadata)
{
if (meta.Id != null)
{
if (ids.Contains(meta.Id))
{
Logger.loader.Warn($"Found duplicates of {meta.Id}, using newest");
var ireason = new IgnoreReason(Reason.Duplicate)
{
ReasonText = $"Duplicate entry of same ID ({meta.Id})",
RelatedTo = resolved.First(p => p.Id == meta.Id)
};
ignore.Add(meta, ireason);
ignoredPlugins.Add(meta, ireason);
continue; // because of sorted order, hightest order will always be the first one
}
bool processedLater = false;
foreach (var meta2 in PluginsMetadata)
{
if (ignore.ContainsKey(meta2)) continue;
if (meta == meta2)
{
processedLater = true;
continue;
}
if (!meta2.Manifest.Conflicts.ContainsKey(meta.Id)) continue;
var range = meta2.Manifest.Conflicts[meta.Id];
if (!range.IsSatisfied(meta.Version)) continue;
Logger.loader.Warn($"{meta.Id}@{meta.Version} conflicts with {meta2.Id}");
if (processedLater)
{
Logger.loader.Warn($"Ignoring {meta2.Name}");
ignore.Add(meta2, new IgnoreReason(Reason.Conflict)
{
ReasonText = $"{meta.Id}@{meta.Version} conflicts with {meta2.Id}",
RelatedTo = meta
});
}
else
{
Logger.loader.Warn($"Ignoring {meta.Name}");
ignore.Add(meta, new IgnoreReason(Reason.Conflict)
{
ReasonText = $"{meta2.Id}@{meta2.Version} conflicts with {meta.Id}",
RelatedTo = meta2
});
break;
}
}
}
if (ignore.TryGetValue(meta, out var reason))
{
ignoredPlugins.Add(meta, reason);
continue;
}
if (meta.Id != null)
ids.Add(meta.Id);
resolved.Add(meta);
}
PluginsMetadata = resolved;
}
private static void FilterDisabled()
{
var enabled = new List<PluginMetadata>(PluginsMetadata.Count);
var disabled = DisabledConfig.Instance.DisabledModIds;
foreach (var meta in PluginsMetadata)
{
if (disabled.Contains(meta.Id ?? meta.Name))
DisabledPlugins.Add(meta);
else
enabled.Add(meta);
}
PluginsMetadata = enabled;
}
private static void FilterWithoutFiles()
{
var enabled = new List<PluginMetadata>(PluginsMetadata.Count);
foreach (var meta in PluginsMetadata)
{
var passed = true;
foreach (var file in meta.AssociatedFiles)
{
if (!file.Exists)
{
passed = false;
ignoredPlugins.Add(meta, new IgnoreReason(Reason.MissingFiles)
{
ReasonText = $"File {Utils.GetRelativePath(file.FullName, UnityGame.InstallPath)} (declared by {meta.Name}) does not exist"
});
Logger.loader.Warn($"File {Utils.GetRelativePath(file.FullName, UnityGame.InstallPath)}" +
$" (declared by {meta.Name}) does not exist! Mod installation is incomplete, not loading it.");
break;
}
}
if (passed)
enabled.Add(meta);
}
PluginsMetadata = enabled;
}
internal static void ComputeLoadOrder()
{
#if DEBUG
Logger.loader.Debug(string.Join(", ", PluginsMetadata.Select(p => p.ToString()).StrJP()));
#endif
static bool InsertInto(HashSet<PluginMetadata> root, PluginMetadata meta, bool isRoot = false)
{ // this is slow, and hella recursive
bool inserted = false;
foreach (var sr in root)
{
inserted = inserted || InsertInto(sr.Dependencies, meta);
if (meta.Id != null)
if (sr.Manifest.Dependencies.ContainsKey(meta.Id) || sr.Manifest.LoadAfter.Contains(meta.Id))
inserted = inserted || sr.Dependencies.Add(meta);
if (sr.Id != null)
if (meta.Manifest.LoadBefore.Contains(sr.Id))
inserted = inserted || sr.Dependencies.Add(meta);
}
if (isRoot)
{
foreach (var sr in root)
{
InsertInto(meta.Dependencies, sr);
if (sr.Id != null)
if (meta.Manifest.Dependencies.ContainsKey(sr.Id) || meta.Manifest.LoadAfter.Contains(sr.Id))
meta.Dependencies.Add(sr);
if (meta.Id != null)
if (sr.Manifest.LoadBefore.Contains(meta.Id))
meta.Dependencies.Add(sr);
}
root.Add(meta);
}
return inserted;
}
var pluginTree = new HashSet<PluginMetadata>();
foreach (var meta in PluginsMetadata)
InsertInto(pluginTree, meta, true);
static void DeTree(List<PluginMetadata> into, HashSet<PluginMetadata> tree)
{
foreach (var st in tree)
if (!into.Contains(st))
{
DeTree(into, st.Dependencies);
into.Add(st);
}
}
PluginsMetadata = new List<PluginMetadata>();
DeTree(PluginsMetadata, pluginTree);
#if DEBUG
Logger.loader.Debug(string.Join(", ", PluginsMetadata.Select(p => p.ToString()).StrJP()));
#endif
}
internal static void ResolveDependencies()
{
var metadata = new List<PluginMetadata>();
var pluginsToLoad = new Dictionary<string, Version>();
var disabledLookup = DisabledPlugins.NonNull(m => m.Id).ToDictionary(m => m.Id, m => m.Version);
foreach (var meta in PluginsMetadata)
{
var missingDeps = new List<(string id, Range version, bool disabled)>();
foreach (var dep in meta.Manifest.Dependencies)
{
#if DEBUG
Logger.loader.Debug($"Looking for dependency {dep.Key} with version range {dep.Value.Intersect(new SemVer.Range("*.*.*"))}");
#endif
if (pluginsToLoad.ContainsKey(dep.Key) && dep.Value.IsSatisfied(pluginsToLoad[dep.Key]))
continue;
if (disabledLookup.ContainsKey(dep.Key) && dep.Value.IsSatisfied(disabledLookup[dep.Key]))
{
Logger.loader.Warn($"Dependency {dep.Key} was found, but disabled. Disabling {meta.Name} too.");
missingDeps.Add((dep.Key, dep.Value, true));
}
else
{
Logger.loader.Warn($"{meta.Name} is missing dependency {dep.Key}@{dep.Value}");
missingDeps.Add((dep.Key, dep.Value, false));
}
}
if (missingDeps.Count == 0)
{
metadata.Add(meta);
if (meta.Id != null)
pluginsToLoad.Add(meta.Id, meta.Version);
}
else if (missingDeps.Any(t => !t.disabled))
{ // missing deps
ignoredPlugins.Add(meta, new IgnoreReason(Reason.Dependency)
{
ReasonText = $"Missing dependencies {string.Join(", ", missingDeps.Where(t => !t.disabled).Select(t => $"{t.id}@{t.version}").StrJP())}"
});
}
else
{
DisabledPlugins.Add(meta);
DisabledConfig.Instance.DisabledModIds.Add(meta.Id ?? meta.Name);
}
}
DisabledConfig.Instance.Changed();
PluginsMetadata = metadata;
}
internal static void InitFeatures()
{
var parsedFeatures = PluginsMetadata.Select(m =>
(metadata: m,
features: m.Manifest.Features.Select(feature =>
(feature, parsed: Ref.Create<Feature.FeatureParse?>(null))
).ToList()
)
).ToList();
while (DefineFeature.NewFeature)
{
DefineFeature.NewFeature = false;
foreach (var (metadata, features) in parsedFeatures)
for (var i = 0; i < features.Count; i++)
{
var feature = features[i];
var success = Feature.TryParseFeature(feature.feature, metadata, out var featureObj,
out var exception, out var valid, out var parsed, feature.parsed.Value);
if (!success && !valid && featureObj == null && exception == null) // no feature of type found
feature.parsed.Value = parsed;
else if (success)
{
if (valid && featureObj.StoreOnPlugin)
metadata.InternalFeatures.Add(featureObj);
else if (!valid)
Logger.features.Warn(
$"Feature not valid on {metadata.Name}: {featureObj.InvalidMessage}");
features.RemoveAt(i--);
}
else
{
Logger.features.Error($"Error parsing feature definition on {metadata.Name}");
Logger.features.Error(exception);
features.RemoveAt(i--);
}
}
foreach (var plugin in PluginsMetadata)
foreach (var feature in plugin.Features)
feature.Evaluate();
}
foreach (var plugin in parsedFeatures)
{
if (plugin.features.Count <= 0) continue;
Logger.features.Warn($"On plugin {plugin.metadata.Name}:");
foreach (var feature in plugin.features)
Logger.features.Warn($" Feature not found with name {feature.feature}");
}
}
internal static void ReleaseAll(bool full = false)
{
if (full)
ignoredPlugins = new Dictionary<PluginMetadata, IgnoreReason>();
else
{
foreach (var m in PluginsMetadata)
ignoredPlugins.Add(m, new IgnoreReason(Reason.Released));
foreach (var m in ignoredPlugins.Keys)
{ // clean them up so we can still use the metadata for updates
m.InternalFeatures.Clear();
m.PluginType = null;
m.Assembly = null;
}
}
PluginsMetadata = new List<PluginMetadata>();
DisabledPlugins = new List<PluginMetadata>();
Feature.Reset();
GC.Collect();
}
internal static void Load(PluginMetadata meta)
{
if (meta.Assembly == null && meta.PluginType != null)
meta.Assembly = Assembly.LoadFrom(meta.File.FullName);
}
internal static PluginExecutor InitPlugin(PluginMetadata meta, IEnumerable<PluginMetadata> alreadyLoaded)
{
if (meta.Manifest.GameVersion != UnityGame.GameVersion)
Logger.loader.Warn($"Mod {meta.Name} developed for game version {meta.Manifest.GameVersion}, so it may not work properly.");
if (meta.IsSelf)
return new PluginExecutor(meta, PluginExecutor.Special.Self);
foreach (var dep in meta.Dependencies)
{
if (alreadyLoaded.Contains(dep)) continue;
// otherwise...
if (ignoredPlugins.TryGetValue(dep, out var reason))
{ // was added to the ignore list
ignoredPlugins.Add(meta, new IgnoreReason(Reason.Dependency)
{
ReasonText = $"Dependency was ignored at load time: {reason.ReasonText}",
RelatedTo = dep
});
}
else
{ // was not added to ignore list
ignoredPlugins.Add(meta, new IgnoreReason(Reason.Dependency)
{
ReasonText = $"Dependency was not already loaded at load time, but was also not ignored",
RelatedTo = dep
});
}
return null;
}
if (meta.IsBare)
return new PluginExecutor(meta, PluginExecutor.Special.Bare);
Load(meta);
foreach (var feature in meta.Features)
{
if (!feature.BeforeLoad(meta))
{
Logger.loader.Warn(
$"Feature {feature?.GetType()} denied plugin {meta.Name} from loading! {feature?.InvalidMessage}");
ignoredPlugins.Add(meta, new IgnoreReason(Reason.Feature)
{
ReasonText = $"Denied in {nameof(Feature.BeforeLoad)} of feature {feature?.GetType()}:\n\t{feature?.InvalidMessage}"
});
return null;
}
}
PluginExecutor exec;
try
{
exec = new PluginExecutor(meta);
}
catch (Exception e)
{
Logger.loader.Error($"Error creating executor for {meta.Name}");
Logger.loader.Error(e);
return null;
}
foreach (var feature in meta.Features)
{
if (!feature.BeforeInit(meta))
{
Logger.loader.Warn(
$"Feature {feature?.GetType()} denied plugin {meta.Name} from initializing! {feature?.InvalidMessage}");
ignoredPlugins.Add(meta, new IgnoreReason(Reason.Feature)
{
ReasonText = $"Denied in {nameof(Feature.BeforeInit)} of feature {feature?.GetType()}:\n\t{feature?.InvalidMessage}"
});
return null;
}
}
try
{
exec.Create();
}
catch (Exception e)
{
Logger.loader.Error($"Could not init plugin {meta.Name}");
Logger.loader.Error(e);
ignoredPlugins.Add(meta, new IgnoreReason(Reason.Error)
{
ReasonText = "Error ocurred while initializing",
Error = e
});
return null;
}
foreach (var feature in meta.Features)
try
{
feature.AfterInit(meta, exec.Instance);
}
catch (Exception e)
{
Logger.loader.Critical($"Feature errored in {nameof(Feature.AfterInit)}: {e}");
}
return exec;
}
internal static List<PluginExecutor> LoadPlugins()
{
InitFeatures();
DisabledPlugins.ForEach(Load); // make sure they get loaded into memory so their metadata and stuff can be read more easily
var list = new List<PluginExecutor>();
var loaded = new HashSet<PluginMetadata>();
foreach (var meta in PluginsMetadata)
{
var exec = InitPlugin(meta, loaded);
if (exec != null)
{
list.Add(exec);
loaded.Add(meta);
}
}
return list;
}
}
}