Refactor Main() and arguments to Dump

Split Main() into individual methods for each command.
Use a structure to pass options to TextDumperTool

Author: SkowronskiAndrew

Documentation/textdumper.md

@@ -5,12 +5,14 @@ file (AssetBundle or SerializedFile) into human-readable yaml-style text file.
 
 ## How to use
 
-The library consists of a single class called [TextDumperTool](../TextDumper/TextDumperTool.cs). It has a method named Dump and takes five parameters:
-* path (string): path of the data file.
-* outputPath (string): path where the output files will be created.
-* skipLargeArrays (bool): if true, the content of arrays larger than 1KB won't be dumped.
-* objectId (long, optional): if specified and not 0, only the object with this signed 64-bit id will be dumped. If 0 (default), all objects are dumped.
-* typeFilter (string, optional): if specified, only objects matching this type are dumped. Accepts a numeric ClassID (e.g. 114) or a type name (e.g. MonoBehaviour, case-insensitive).
+The library consists of a single class called [TextDumperTool](../TextDumper/TextDumperTool.cs). Call its `Dump` method, passing a `TextDumperTool.DumpOptions` object with the following properties:
+* `Format` (DumpFormat, optional): output format. Defaults to `Text`.
+* `Path` (string): path of the data file.
+* `OutputPath` (string): path where the output files will be created. Ignored when `ToStdout` is true.
+* `SkipLargeArrays` (bool): if true, the content of arrays larger than 1KB won't be dumped.
+* `ObjectId` (long, optional): if specified and not 0, only the object with this signed 64-bit id will be dumped. If 0 (default), all objects are dumped.
+* `TypeFilter` (string, optional): if specified, only objects matching this type are dumped. Accepts a numeric ClassID (e.g. 114) or a type name (e.g. MonoBehaviour, case-insensitive).
+* `ToStdout` (bool, optional): if true, the dump is written to standard output instead of a file. Refused for archives that contain more than one SerializedFile.
 
 ## How to interpret the output files
 

TextDumper/TextDumperTool.cs

@@ -14,12 +14,34 @@ public class TextDumperTool
     SerializedFile m_SerializedFile;
     TextWriter m_Writer;
 
-    public int Dump(string path, string outputPath, bool skipLargeArrays, long objectId = 0, string typeFilter = null, bool toStdout = false)
+    public enum DumpFormat
     {
+        Text,
+    }
+
+    public class DumpOptions
+    {
+        public DumpFormat Format { get; init; } = DumpFormat.Text;
+        public string Path { get; init; }
+        public string OutputPath { get; init; }
+        public bool SkipLargeArrays { get; init; }
+        public long ObjectId { get; init; }
+        public string TypeFilter { get; init; }
+        public bool ToStdout { get; init; }
+    }
+
+    public int Dump(DumpOptions options)
+    {
+        var path = options.Path;
+        var outputPath = options.OutputPath;
+        var objectId = options.ObjectId;
+        var typeFilter = options.TypeFilter;
+        var toStdout = options.ToStdout;
+
         if (string.IsNullOrWhiteSpace(typeFilter))
             typeFilter = null;
 
-        m_SkipLargeArrays = skipLargeArrays;
+        m_SkipLargeArrays = options.SkipLargeArrays;
 
         try
         {