修复 .lang 解析丢失的 edge case

将简化版 line.IndexOf('=') 替换为完整的 DeserializeFromLang 状态机，
补回原版支持的 #PARSE_ESCAPES 续行、/* */ 多行注释、
// / # / < 单行注释、空行跳过等特性。

同步删除 AssetsNamespaceResource 中未使用的 FileProviders 属性
和废弃的 launchSettings.json。

Author: zms9110750

src/Packer.Core/Model/ModProvider/AssetsNamespaceResource.cs

@@ -20,6 +20,4 @@ string ModVersion
     public FloatingConfig LocalConfig => field ??= FloatingConfig.Load(this);
 
     public PackerPolicy PackerPolicies => field ??= PackerPolicy.Load(this);
-
-    public IEnumerable<IResourceFileProvider> FileProviders => field ??= PackerPolicies.CreateProviders(this, LocalConfig);
 }

src/Packer.Core/Model/PackerPolicy.cs

@@ -22,15 +22,18 @@ public sealed class PackerPolicy : ICollection<PackerPolicyItem>
     public static PackerPolicy Load(string namespaceDirPath)
     {
         var policyFile = Path.Combine(namespaceDirPath, DefaultFileName);
-        if (!File.Exists(policyFile)) return Shared;
+        if (!File.Exists(policyFile))
+            return Shared;
         try
         {
             var json = File.ReadAllText(policyFile);
             Log.Debug("策略文件内容: {Json}", json);
             var policies = JsonSerializer.Deserialize<PackerPolicy>(
                 json, SourceGenerationContext.JsonOptions);
-            if (policies is null) { Log.Warning("策略反序列化结果为 null: {File}", policyFile); return Shared; }
-            if (policies._items.Count == 0) { Log.Warning("策略列表为空: {File}", policyFile); return Shared; }
+            if (policies is null)
+            { Log.Warning("策略反序列化结果为 null: {File}", policyFile); return Shared; }
+            if (policies._items.Count == 0)
+            { Log.Warning("策略列表为空: {File}", policyFile); return Shared; }
             Log.Debug("成功加载 {Count} 条策略: {File}", policies._items.Count, policyFile);
             return policies;
         }
@@ -71,7 +74,7 @@ protected IResourceFileProvider CreateProvider(
                 var json = File.ReadAllText(filePath);
                 var entries = new Dictionary<string, string>();
                 foreach (var prop in JsonDocument.Parse(json).RootElement.EnumerateObject())
-                    if (prop.Value.ValueKind == System.Text.Json.JsonValueKind.String)
+                    if (prop.Value.ValueKind == JsonValueKind.String)
                         entries[prop.Name] = prop.Value.GetString()!;
                 return new JsonFile(entries, relativePath)
                 {
@@ -81,14 +84,8 @@ protected IResourceFileProvider CreateProvider(
 
             case { parentDir: "lang", ext: ".lang" }:
                 var content = File.ReadAllText(filePath);
-                var entries2 = new Dictionary<string, string>();
-                foreach (var line in content.EnumerateLines())
-                {
-                    var eq = line.IndexOf('=');
-                    if (eq == -1) continue;
-                    entries2.TryAdd(line[..eq].Trim().ToString(), line[(eq + 1)..].Trim().ToString());
-                }
-                return new LangFile(entries2, relativePath)
+                entries = LangFile.DeserializeFromLang(content);
+                return new LangFile(entries, relativePath)
                 {
                     Namespace = ns,
                     PolicyItem = this
@@ -112,17 +109,20 @@ public override IEnumerable<IResourceFileProvider> CreateProviders(
         foreach (var domainDir in Directory.EnumerateDirectories(namespaceResource.LocalPath))
         {
             var domainName = Path.GetFileName(domainDir);
-            if (config.ExclusionDomains.Contains(domainName)) continue;
+            if (config.ExclusionDomains.Contains(domainName))
+                continue;
             bool domainForceInclude = config.InclusionDomains.Contains(domainName);
 
             foreach (var file in Directory.EnumerateFiles(domainDir, "*", SearchOption.AllDirectories))
             {
                 var relativePath = Path.GetRelativePath(namespaceResource.LocalPath, file).Replace('\\', '/');
-                if (config.ExclusionPaths.Contains(relativePath)) continue;
+                if (config.ExclusionPaths.Contains(relativePath))
+                    continue;
                 if (!domainForceInclude)
                 {
                     bool inTargetLang = relativePath.Contains("zh_cn", StringComparison.OrdinalIgnoreCase);
-                    if (!config.InclusionPaths.Contains(relativePath) && !inTargetLang) continue;
+                    if (!config.InclusionPaths.Contains(relativePath) && !inTargetLang)
+                        continue;
                 }
                 yield return CreateProvider(file, relativePath, namespaceResource);
             }
@@ -136,7 +136,8 @@ public override IEnumerable<IResourceFileProvider> CreateProviders(
         INamespaceResource namespaceResource, FloatingConfig config)
     {
         var targetDir = new DirectoryInfo(Source);
-        if (!targetDir.Exists) yield break;
+        if (!targetDir.Exists)
+            yield break;
         var targetNs = new AssetsNamespaceResource(
             targetDir.FullName, targetDir.Name, targetDir.Parent?.Name ?? "", namespaceResource.ModVersion);
         foreach (var policy in targetNs.PackerPolicies)

src/Packer.Core/Model/ResourceFile/LangFile.cs

@@ -57,4 +57,77 @@ public override Stream GetContentStream()
         }
         return new MemoryStream(Encoding.UTF8.GetBytes(sb.ToString()));
     }
+    internal static Dictionary<string, string> DeserializeFromLang(string content)
+    {
+        var result = new Dictionary<string, string>();
+        var escapeMode = false;
+        var state = LangParseState.Normal;
+        string pendingKey = "";
+        StringBuilder pendingValue = new StringBuilder();
+
+
+        foreach (var line in content.EnumerateLines())
+        {
+            switch (state)
+            {
+                case LangParseState.LineContinuation when line.EndsWith("\\"):
+                    pendingValue.Append(line.TrimStart()[..^1]);
+                    continue;
+
+                case LangParseState.LineContinuation:
+                    pendingValue.Append(line.TrimStart());
+                    result.TryAdd(pendingKey, pendingValue.ToString());
+                    pendingValue.Clear();
+                    state = LangParseState.Normal;
+                    continue;
+
+                case LangParseState.MultiLineComment when line.Trim().EndsWith("*/"):
+                    state = LangParseState.Normal;
+                    continue;
+
+                case LangParseState.MultiLineComment:
+                    continue;
+            }
+
+            // ── Normal 状态 ──
+
+            switch (line)
+            {
+                case "#PARSE_ESCAPES":
+                    escapeMode = true;
+                    continue;
+                case ['/', '*', ..]:
+                    state = LangParseState.MultiLineComment;
+                    continue;
+                case ['#' or '<', ..] or ['/', '/', ..]:
+                    continue;
+            }
+
+
+
+            var eq = line.IndexOf('=');
+            if (eq == -1)
+            {
+                continue;
+            }
+
+            var key = line[..eq];
+            var value = eq + 1 < line.Length ? line[(eq + 1)..] : "";
+
+            if (escapeMode && value.EndsWith("\\"))
+            {
+                state = LangParseState.LineContinuation;
+                pendingKey = key.ToString();
+                pendingValue.Append(value[..^1]);
+            }
+            else
+            {
+                result.TryAdd(key.ToString(), value.ToString());
+            }
+        }
+
+        return result;
+    }
+
+    private enum LangParseState { Normal, MultiLineComment, LineContinuation }
 }