Very early SevenZip WIP version

2015-03-18 08:48:48 -05:00
parent 7830068257
commit 5d9d63fb08
55 changed files with 9683 additions and 3477 deletions
--- a/ROMVault2/SupportedFiles/SevenZip/Structure/PackedStreamInfo.cs
+++ b/ROMVault2/SupportedFiles/SevenZip/Structure/PackedStreamInfo.cs
@@ -0,0 +1,91 @@
+using System;
+using System.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Structure
+{
+    public class PackedStreamInfo
+    {
+        public ulong PackedSize;
+        public ulong? Crc;
+        public ulong StreamPosition;
+
+        public static void Read(BinaryReader br, out ulong packPosition, out PackedStreamInfo[] packedStreams)
+        {
+            Util.log("Begin : ReadPackInfo", 1);
+
+            packPosition = br.ReadEncodedUInt64();
+            Util.log("PackPosition = " + packPosition);
+
+            ulong numPackStreams = br.ReadEncodedUInt64();
+            Util.log("NumPackStreams = " + numPackStreams);
+
+            packedStreams = new PackedStreamInfo[numPackStreams];
+            for (ulong i = 0; i < numPackStreams; i++)
+                packedStreams[i] = new PackedStreamInfo();
+
+            ulong streamPosition = 0;
+
+            for (; ; )
+            {
+                HeaderProperty hp = (HeaderProperty)br.ReadByte();
+                Util.log("HeaderProperty = " + hp);
+                switch (hp)
+                {
+                    case HeaderProperty.kSize:
+                        for (ulong i = 0; i < numPackStreams; i++)
+                        {
+                            packedStreams[i].StreamPosition = streamPosition;
+                            Util.log("PackdStream[" + i + "].StreamPosition = " + packedStreams[i].StreamPosition);
+                            packedStreams[i].PackedSize = br.ReadEncodedUInt64();
+                            Util.log("PackdStream[" + i + "].PackedSize = " + packedStreams[i].PackedSize);
+                            streamPosition += packedStreams[i].PackedSize;
+                        }
+                        continue;
+
+                    case HeaderProperty.kCRC:
+                        for (ulong i = 0; i < numPackStreams; i++)
+                        {
+                            packedStreams[i].Crc = br.ReadEncodedUInt64();
+                            Util.log("PackdStream[" + i + "].CRC = " + ((ulong)packedStreams[i].Crc).ToString("X"));
+                        }
+                        continue;
+
+                    case HeaderProperty.kEnd:
+                        Util.log("End : ReadPackInfo", -1);
+                        return;
+
+                    default:
+                        throw new Exception(hp.ToString());
+                }
+            }
+        }
+
+        public static void Write(BinaryWriter bw,ulong packPosition, PackedStreamInfo[] packedStreams)
+        {
+            ulong numPackStreams =(ulong) packedStreams.Length;
+            bw.Write((byte)HeaderProperty.kPackInfo);
+            bw.WriteEncodedUInt64(packPosition);
+            bw.WriteEncodedUInt64(numPackStreams);
+
+            bw.Write((byte)HeaderProperty.kSize);
+            ulong streamPosition = 0;
+            for (ulong i = 0; i < numPackStreams; i++)
+            {
+                packedStreams[i].StreamPosition = streamPosition;
+                bw.WriteEncodedUInt64(packedStreams[i].PackedSize);
+                streamPosition += packedStreams[i].PackedSize;
+            }
+
+            // Only checking the first CRC assuming all the reset will be the same
+            if (packedStreams[0].Crc != null)
+            {
+                bw.Write((byte) HeaderProperty.kCRC);
+                for (ulong i = 0; i < numPackStreams; i++)
+                    bw.WriteEncodedUInt64(packedStreams[i].Crc??0);
+            }
+
+            bw.Write((byte)HeaderProperty.kEnd);
+
+        }
+    }
+}