daily update on 20240508 by nitload youmu, partical added

源代码/StgSharp/Data/SSD/SSDraw.cs

@@ -49,7 +49,7 @@ namespace StgSharp.Data.FileIO
     {
 
         public const string FileType = "ssdraw";
-        public const int SegmentCapacity = 16 * 16;
+        public const int SegmentCapacity = 16 * (StgSharp.ssdSegmentLength - 1);
 
         private Area home;
         private int previousHash;
@@ -62,7 +62,6 @@ namespace StgSharp.Data.FileIO
         internal SSDraw()
         {
             segments = new List<SSDSegment>();
-
         }
 
         public SSDraw(string name)
@@ -79,24 +78,11 @@ namespace StgSharp.Data.FileIO
 
         internal SSDrawHead Head => _head;
 
-        //TODO 分析头，加载文件头，进一步加载全部的数据块
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="head"></param>
-        /// <returns></returns>
-        public static SSDraw AnalyzeHead(SSDrawHead head)
+        public SSDSegment[] GetSegments()
         {
-            if (head._head.globalID == 0)
-            {
-                return null;
-            }
-            SSDraw ret = new SSDraw();
-            foreach ((int, int) item in head)
-            {
-
-            }
+            SSDSegment[] ret = segments.ToArray();
+            Array.Resize(ref ret, ret.Length + 1);
+            ret[ret.Length - 1] = Head.Data;
             return ret;
         }
 
@@ -118,7 +104,7 @@ namespace StgSharp.Data.FileIO
             f.Close();
         }
 
-        //TODO read raw 没写完
+        
         public static SSDraw readRaw(string route)
         {
             string[] routeFolders = route.Split('\\');
@@ -126,9 +112,20 @@ namespace StgSharp.Data.FileIO
             {
                 throw new Exception($"File to open is not a {FileType} file.");
             }
-            FileStream stream = File.Open(route, FileMode.Open);
-            return new SSDraw(string.Empty);
-
+            byte[] dataStream= new byte[16 * StgSharp.ssdSegmentLength];
+            SSDraw ret = new SSDraw();
+            using (FileStream stream = File.Open(route, FileMode.Open))
+            {
+                int offset = 0;
+                offset += stream.Read(dataStream,offset,16);
+                ret._head = new SSDrawHead(dataStream);
+                while (offset < stream.Length)
+                {
+                    offset += stream.Read(dataStream, offset, 16);
+                    ret.segments.Add(SSDSegment.FromStream(dataStream));
+                }
+            }
+            return ret;
         }
 
         public void WriteRaw(byte[] dataStream)
@@ -170,9 +167,26 @@ namespace StgSharp.Data.FileIO
     public unsafe class SSDrawHead : IEnumerable<(int, int)>
     {
 
-        private SSDSegment segmentRange;
+        private SSDSegment segmentData;
         private string name;
 
+        internal SSDrawHead(byte[] data)
+        {
+            if (data.Length != 16* StgSharp.ssdSegmentLength)
+            {
+                throw new ArgumentException();
+            }
+            segmentData = new SSDSegment();
+            fixed (byte* bptr = data)
+            {
+                segmentData.Head.data = *(M128*)bptr;
+                for (int i = 1; i < StgSharp.ssdSegmentLength; i++)
+                {
+                    segmentData.WriteData<M128>(i - 1,*(M128*)(bptr + 16 * i));
+                }
+            }
+        }
+
         internal SSDrawHead(string name)
         {
             int hash;
@@ -190,16 +204,43 @@ namespace StgSharp.Data.FileIO
         {
         }
 
-        public (int begin, int end) this[byte index]
+        internal SSDSegment Data
         {
-            get => segmentRange.ReadData<(int, int)>(index);
-            set => segmentRange.WriteData<(int, int)>(index, value);
+            get => segmentData;
         }
 
-        public byte DiscIndex
+        public (int begin, int end) this[byte index]
         {
-            get => _head.selfDefine_2;
-            internal set => _head.selfDefine_2 = value;
+            get => segmentData.ReadData<(int, int)>(index);
+            set => segmentData.WriteData<(int, int)>(index, value);
+        }
+
+        public unsafe string Name
+        {
+            get
+            {
+                byte[] bytes = new byte[15 * 16];
+                fixed (byte* bptr = segmentData.Data)
+                {
+                    Marshal.Copy(
+                        source: (IntPtr)bptr,
+                        destination: bytes,
+                        256, 15 * 16);
+                }
+                return Encoding.UTF8.GetString(bytes);
+            }
+            set
+            {
+                byte[] namecode = Encoding.UTF8.GetBytes(value);
+                fixed (byte* bptr = segmentData.Data)
+                {
+                    Marshal.Copy(
+                        source: namecode,
+                        startIndex: 0,
+                        destination: (IntPtr)(bptr + 256),
+                        length: 15 * 16);
+                }
+            }
         }
 
         public byte TypeCode
@@ -210,7 +251,7 @@ namespace StgSharp.Data.FileIO
 
         internal ref SSDSegmentHead _head
         {
-            get => ref segmentRange.Head;
+            get => ref segmentData.Head;
         }
 
         internal byte pairCount
@@ -226,10 +267,9 @@ namespace StgSharp.Data.FileIO
             }
         }
 
-
         public unsafe byte[] GetBytes()
         {
-            return segmentRange.GetBytes();
+            return segmentData.GetBytes();
         }
 
 
@@ -237,7 +277,7 @@ namespace StgSharp.Data.FileIO
         {
             for (int i = 0; i < pairCount; i++)
             {
-                yield return segmentRange.ReadData<(int, int)>(i);
+                yield return segmentData.ReadData<(int, int)>(i);
             }
         }
 
@@ -245,7 +285,7 @@ namespace StgSharp.Data.FileIO
         {
             for (int i = 0; i < pairCount; i++)
             {
-                yield return segmentRange.ReadData<(int, int)>(i);
+                yield return segmentData.ReadData<(int, int)>(i);
             }
         }