feat(csipfs): add "object dump"

IpfsCli/Commands/ObjectCommand.cs

@@ -4,12 +4,15 @@
 using System.ComponentModel.DataAnnotations;
 using System.Text;
 using System.Threading.Tasks;
+using Ipfs.Engine.UnixFileSystem;
+using System.IO;
 
 namespace Ipfs.Cli
 {
     [Command(Description = "Manage IPFS objects")]
     [Subcommand("links", typeof(ObjectLinksCommand))]
     [Subcommand("get", typeof(ObjectGetCommand))]
+    [Subcommand("dump", typeof(ObjectDumpCommand))]
     class ObjectCommand : CommandBase
     {
         public Program Parent { get; set; }
@@ -63,4 +66,30 @@ protected override async Task<int> OnExecute(CommandLineApplication app)
         }
     }
 
+    [Command(Description = "Dump the DAG node")]
+    class ObjectDumpCommand : CommandBase
+    {
+        [Argument(0, "cid", "The content ID of the object")]
+        [Required]
+        public string Cid { get; set; }
+
+        ObjectCommand Parent { get; set; }
+
+        class Node
+        {
+            public DagNode Dag;
+            public DataMessage DataMessage;
+        }
+
+        protected override async Task<int> OnExecute(CommandLineApplication app)
+        {
+            var Program = Parent.Parent;
+            var node = new Node();
+            var block = await Program.CoreApi.Block.GetAsync(Cid);
+            node.Dag = new DagNode(block.DataStream);
+            node.DataMessage = ProtoBuf.Serializer.Deserialize<DataMessage>(node.Dag.DataStream);
+
+            return Program.Output(app, node, null);
+        }
+    }
 }

IpfsCli/Program.cs

@@ -90,7 +90,7 @@ public static int Main(string[] args)
             }
 
             var took = DateTime.Now - startTime;
-            Console.Write($"Took {took.TotalSeconds} seconds.");
+            //Console.Write($"Took {took.TotalSeconds} seconds.");
 
             return 0;
         }

src/UnixFileSystem/DataMessage.cs

@@ -10,39 +10,83 @@
 
 namespace Ipfs.Engine.UnixFileSystem
 {
-    enum DataType
+    /// <summary>
+    ///   Specifies the type of data.
+    /// </summary>
+    public enum DataType
     {
+        /// <summary>
+        ///  Raw data
+        /// </summary>
         Raw = 0,
+
+        /// <summary>
+        ///   A directory of files. 
+        /// </summary>
         Directory = 1,
+
+        /// <summary>
+        ///   A file.
+        /// </summary>
         File = 2,
+
+        /// <summary>
+        ///  Metadata (NYI) 
+        /// </summary>
         Metadata = 3,
+
+        /// <summary>
+        ///  Symbolic link (NYI) 
+        /// </summary>
         Symlink = 4,
+
+        /// <summary>
+        ///  NYI 
+        /// </summary>
         HAMTShard = 5
     };
 
     /// <summary>
     ///   The ProtoBuf data that is stored in a DAG.
     /// </summary>
     [ProtoContract]
-    internal class DataMessage
+    public class DataMessage
     {
+        /// <summary>
+        ///   The type of data.
+        /// </summary>
         [ProtoMember(1, IsRequired = true)]
         public DataType Type;
 
+        /// <summary>
+        ///   The data.
+        /// </summary>
         [ProtoMember(2, IsRequired = false)]
         public byte[] Data;
 
+        /// <summary>
+        ///   The file size.
+        /// </summary>
         [ProtoMember(3, IsRequired = false)]
         public ulong? FileSize;
 
+        /// <summary>
+        ///  The file size of each block.
+        /// </summary>
         [ProtoMember(4, IsRequired = false)]
         public ulong[] BlockSizes;
 
 #pragma warning disable 0649 // disable warning about unassinged fields
+        /// <summary>
+        ///   NYI
+        /// </summary>
         [ProtoMember(5, IsRequired = false)]
         public ulong? HashType;
 
 #pragma warning disable 0649 // disable warning about unassinged fields
+        /// <summary>
+        ///   NYI
+        /// </summary>
         [ProtoMember(6, IsRequired = false)]
         public ulong? Fanout;
     }