daily update on 20240419 by nitload youmu, SSD merged into main stream

2024-04-20 02:36:36 +08:00
parent efeb4ba058
commit 7b67eb2f4d
81 changed files with 4568 additions and 33 deletions
@@ -0,0 +1,199 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="DataHead.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Numerics;
+using System.Runtime.InteropServices;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace StgSharp.Data
+{
+
+    [StructLayout(LayoutKind.Explicit, Size = 16)]
+    public struct SSDSegmentHead
+    {
+
+        [FieldOffset(0)] internal M128 data;
+        [FieldOffset(12)] internal byte size;
+
+        [FieldOffset(0)] public int globalID;
+        [FieldOffset(4)] public int nextID;
+
+
+        [FieldOffset(8)] public int previousHash;
+        [FieldOffset(13)] public byte selfDefine_1;
+        [FieldOffset(14)] public byte selfDefine_2;
+        [FieldOffset(15)] public byte selfDefine_3;
+
+        public int Size
+        {
+            get => ((int)size) + 1;
+            set
+            {
+                if ((value > 256) || (value < 0))
+                {
+                    throw new ArgumentOutOfRangeException();
+                }
+                size = (byte)(value - 1);
+            }
+        }
+
+        public unsafe byte[] GetBytes()
+        {
+            byte[] ret = new byte[16];
+            fixed (Vector4* vptr = &data.vec)
+            {
+                byte* bptr = (byte*)vptr;
+                for (int i = 0; i < 15; i++)
+                {
+                    ret[i] = *bptr;
+                }
+            }
+            return ret;
+        }
+
+    }
+
+
+    public unsafe class SSDrawHead : IEnumerable<int>
+    {
+
+        private List<int> freeSegments;
+        private string name;
+
+        private List<(int, int)> segmentRange;
+        internal SSDSegmentHead _head;
+
+        internal SSDrawHead(string name)
+        {
+            int hash;
+            this.name = name;
+            using (SHA256 sha256Hash = SHA256.Create())
+            {
+                byte[] bytes = sha256Hash.ComputeHash(Encoding.UTF8.GetBytes(name));
+
+                hash = BitConverter.ToInt32(bytes, 0);
+            }
+            _head.previousHash = hash;
+            segmentRange = new List<(int, int)>();
+            freeSegments = new List<int>();
+        }
+
+        public SSDrawHead()
+        {
+            segmentRange = new List<(int, int)>();
+            freeSegments = new List<int>();
+        }
+
+        public void AddSingleSegment(int id)
+        {
+            freeSegments.Add(id);
+        }
+
+        public unsafe byte[] GetBytes(out int size)
+        {
+            byte[] namecode = Encoding.UTF8.GetBytes(name);
+            size = 16 + 4 +
+                (segmentRange.Count * 8) +
+                (freeSegments.Count * 4) +
+                namecode.Length;
+            byte[] ret = new byte[size];
+            fixed (byte* bptr = ret)
+            {
+                *(SSDSegmentHead*)bptr = _head;
+                *(bptr + 16) = (byte)segmentRange.Count;
+                *(bptr + 17) = (byte)namecode.Length;
+                *(bptr + 18) = (byte)freeSegments.Count;
+                int t = 20;
+                for (int i = 0; i < segmentRange.Count; i++, t += 8)
+                {
+                    *(int*)(bptr + t) = segmentRange[i].Item1;
+                    *(int*)(bptr + t + 4) = segmentRange[i].Item2;
+                }
+                for (int i = 0; i < freeSegments.Count; i++, t += 4)
+                {
+                    *(int*)(bptr + t) = freeSegments[i];
+                }
+                for (int i = 0; i < namecode.Length; i++, t++)
+                {
+                    *(bptr + t) = namecode[i];
+                }
+            }
+            return ret;
+        }
+
+        public void WriteRange(int begin, int end)
+        {
+            segmentRange.Add((begin, end));
+        }
+
+        internal void MarkSegment(int id)
+        {
+            freeSegments.Add(id);
+        }
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            foreach (var tuple in segmentRange)
+            {
+                for (int i = tuple.Item1; i <= tuple.Item2; i++)
+                {
+                    yield return i;
+                }
+            }
+
+            foreach (var item in freeSegments)
+            {
+                yield return item;
+            }
+        }
+
+        IEnumerator<int> IEnumerable<int>.GetEnumerator()
+        {
+            foreach (var tuple in segmentRange)
+            {
+                for (int i = tuple.Item1; i <= tuple.Item2; i++)
+                {
+                    yield return i;
+                }
+            }
+
+            foreach (var item in freeSegments)
+            {
+                yield return item;
+            }
+        }
+
+    }
+
+}