CodeWalker/GameFiles/MetaTypes/MetaBuilder.cs

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C#
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CodeWalker.GameFiles
{
public class MetaBuilder
{
List<MetaBuilderBlock> Blocks = new List<MetaBuilderBlock>();
int MaxBlockLength = 0x4000; //TODO: figure what this should be!
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public MetaBuilderBlock EnsureBlock(MetaName type)
{
foreach (var block in Blocks)
{
if (block.StructureNameHash == type)
{
if (block.TotalSize < MaxBlockLength)
{
return block;
}
}
}
MetaBuilderBlock b = new MetaBuilderBlock();
b.StructureNameHash = type;
b.Index = Blocks.Count;
Blocks.Add(b);
return b;
}
public MetaBuilderPointer AddItem<T>(MetaName type, T item) where T : struct
{
MetaBuilderBlock block = EnsureBlock(type);
byte[] data = MetaTypes.ConvertToBytes(item);
int brem = data.Length % 16;
if (brem > 0)
{
int newlen = data.Length - brem + 16;
byte[] newdata = new byte[newlen];
Buffer.BlockCopy(data, 0, newdata, 0, data.Length);
data = newdata; //make sure item size is multiple of 16... so pointers don't need sub offsets!
}
int idx = block.AddItem(data);
MetaBuilderPointer r = new MetaBuilderPointer();
r.BlockID = block.Index + 1;
r.Offset = (idx * data.Length);
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r.Length = data.Length;
return r;
}
public MetaBuilderPointer AddItemArray<T>(MetaName type, T[] items) where T : struct
{
MetaBuilderBlock block = EnsureBlock(type);
byte[] data = MetaTypes.ConvertArrayToBytes(items);
int datalen = data.Length;
int newlen = datalen;
int lenrem = newlen % 16;
if (lenrem != 0)
{
newlen += (16 - lenrem);
}
byte[] newdata = new byte[newlen];
Buffer.BlockCopy(data, 0, newdata, 0, datalen);
int offs = block.TotalSize;
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int idx = block.AddItem(newdata);
MetaBuilderPointer r = new MetaBuilderPointer();
r.BlockID = block.Index + 1;
r.Offset = offs; //(idx * data.Length);;
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r.Length = items.Length;
return r;
}
public MetaBuilderPointer AddString(string str)
{
MetaBuilderBlock block = EnsureBlock(MetaName.STRING);
byte[] data = Encoding.ASCII.GetBytes(str);
int datalen = data.Length;
int newlen = datalen;
int lenrem = newlen % 16;
if (lenrem != 0) //need to pad the data length up to multiple of 16.
{
newlen += (16 - lenrem);
}
byte[] newdata = new byte[newlen];
Buffer.BlockCopy(data, 0, newdata, 0, datalen);
int offs = block.TotalSize;
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int idx = block.AddItem(newdata);
MetaBuilderPointer r = new MetaBuilderPointer();
r.BlockID = block.Index + 1;
r.Offset = offs;// (idx * data.Length);
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r.Length = datalen; //actual length of string.
return r;
}
public MetaPOINTER AddItemPtr<T>(MetaName type, T item) where T : struct //helper method for AddItem<T>
{
var ptr = AddItem(type, item);
return new MetaPOINTER(ptr.BlockID, ptr.Offset, 0);
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}
public Array_Structure AddItemArrayPtr<T>(MetaName type, T[] items) where T : struct //helper method for AddItemArray<T>
{
if ((items == null) || (items.Length == 0)) return new Array_Structure();
var ptr = AddItemArray(type, items);
return new Array_Structure(ptr);
}
public Array_uint AddHashArrayPtr(MetaHash[] items)
{
if ((items == null) || (items.Length == 0)) return new Array_uint();
var ptr = AddItemArray(MetaName.HASH, items);
return new Array_uint(ptr);
}
public Array_ushort AddUshortArrayPtr(ushort[] items)
{
if ((items == null) || (items.Length == 0)) return new Array_ushort();
var ptr = AddItemArray(MetaName.USHORT, items);
return new Array_ushort(ptr);
}
public CharPointer AddStringPtr(string str) //helper method for AddString
{
var ptr = AddString(str);
return new CharPointer(ptr);
}
public Array_StructurePointer AddPointerArray(MetaPOINTER[] arr)
{
if ((arr == null) || (arr.Length == 0)) return new Array_StructurePointer();
var ptr = AddItemArray(MetaName.POINTER, arr);
Array_StructurePointer sp = new Array_StructurePointer();
sp.Count1 = (ushort)arr.Length;
sp.Count2 = sp.Count1;
sp.Pointer = ptr.Pointer;
return sp;
}
public Array_StructurePointer AddItemPointerArrayPtr<T>(MetaName type, T[] items) where T : struct
{
//helper method for creating a pointer array
if ((items == null) || (items.Length == 0)) return new Array_StructurePointer();
MetaPOINTER[] ptrs = new MetaPOINTER[items.Length];
for (int i = 0; i < items.Length; i++)
{
ptrs[i] = AddItemPtr(type, items[i]);
}
return AddPointerArray(ptrs);
//Array_StructurePointer sp = new Array_StructurePointer();
//sp.Count1 = (ushort)items.Length;
//sp.Count2 = sp.Count1;
//for (int i = 0; i < items.Length; i++)
//{
// var item = items[i];
// var meptr = AddItemPtr(type, item);
// var mptr = AddItem(MetaName.POINTER, meptr);
// if (i == 0)
// {
// sp.Pointer = mptr.Pointer; //main pointer points to the first item.
// }
//}
//return sp;
}
public Array_StructurePointer AddWrapperArrayPtr(MetaWrapper[] items)
{
if ((items == null) || (items.Length == 0)) return new Array_StructurePointer();
MetaPOINTER[] ptrs = new MetaPOINTER[items.Length];
for (int i = 0; i < items.Length; i++)
{
ptrs[i] = items[i].Save(this);
}
return AddPointerArray(ptrs);
//Array_StructurePointer sp = new Array_StructurePointer();
//sp.Count1 = (ushort)items.Length;
//sp.Count2 = sp.Count1;
//for (int i = 0; i < items.Length; i++)
//{
// var item = items[i];
// var meptr = item.Save(this);
// var mptr = AddItem(MetaName.POINTER, meptr);
// if (i == 0)
// {
// sp.Pointer = mptr.Pointer; //main pointer points to the first item.
// }
//}
//return sp;
}
public Array_Structure AddWrapperArray(MetaWrapper[] items)
{
if ((items == null) || (items.Length == 0)) return new Array_Structure();
var sa = new Array_Structure();
sa.Count1 = (ushort)items.Length;
sa.Count2 = sa.Count1;
for (int i = 0; i < items.Length; i++)
{
var item = items[i];
var meptr = item.Save(this);
if (i == 0)
{
MetaBuilderPointer mbp = new MetaBuilderPointer();
mbp.BlockID = meptr.BlockID;
mbp.Offset = meptr.Offset;
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sa.Pointer = mbp.Pointer;
}
}
return sa;
}
public byte[] GetData()
{
int totlen = 0;
for (int i = 0; i < Blocks.Count; i++)
{
totlen += Blocks[i].TotalSize;
}
byte[] data = new byte[totlen];
int offset = 0;
for (int i = 0; i < Blocks.Count; i++)
{
var block = Blocks[i];
for (int j = 0; j < block.Items.Count; j++)
{
var bdata = block.Items[j];
Buffer.BlockCopy(bdata, 0, data, offset, bdata.Length);
offset += bdata.Length;
}
}
if (offset != data.Length)
{ }
return data;
}
Dictionary<MetaName, MetaStructureInfo> StructureInfos = new Dictionary<MetaName, MetaStructureInfo>();
Dictionary<MetaName, MetaEnumInfo> EnumInfos = new Dictionary<MetaName, MetaEnumInfo>();
public void AddStructureInfo(MetaName name)
{
if (!StructureInfos.ContainsKey(name))
{
MetaStructureInfo si = MetaTypes.GetStructureInfo(name);
if (si != null)
{
StructureInfos[name] = si;
}
}
}
public void AddEnumInfo(MetaName name)
{
if (!EnumInfos.ContainsKey(name))
{
MetaEnumInfo ei = MetaTypes.GetEnumInfo(name);
if (ei != null)
{
EnumInfos[name] = ei;
}
}
}
public Meta GetMeta()
{
Meta m = new Meta();
m.FileVFT = 0x405bc808;
m.FileUnknown = 1;
m.Unknown_10h = 0x50524430;
m.Unknown_14h = 0x0079;
m.RootBlockIndex = 1; //assume first block is root. todo: make adjustable?
m.StructureInfos = new ResourceSimpleArray<MetaStructureInfo>();
foreach (var si in StructureInfos.Values)
{
m.StructureInfos.Add(si);
}
m.StructureInfosCount = (short)m.StructureInfos.Count;
m.EnumInfos = new ResourceSimpleArray<MetaEnumInfo>();
foreach (var ei in EnumInfos.Values)
{
m.EnumInfos.Add(ei);
}
m.EnumInfosCount = (short)m.EnumInfos.Count;
m.DataBlocks = new ResourceSimpleArray<MetaDataBlock>();
foreach (var bb in Blocks)
{
m.DataBlocks.Add(bb.GetMetaDataBlock());
}
m.DataBlocksCount = (short)m.DataBlocks.Count;
return m;
}
}
public class MetaBuilderBlock
{
public MetaName StructureNameHash { get; set; }
public List<byte[]> Items { get; set; } = new List<byte[]>();
public int TotalSize { get; set; } = 0;
public int Index { get; set; } = 0;
public int AddItem(byte[] item)
{
int idx = Items.Count;
Items.Add(item);
TotalSize += item.Length;
return idx;
}
public uint BasePointer
{
get
{
return (((uint)Index + 1) & 0xFFF);
}
}
public MetaDataBlock GetMetaDataBlock()
{
if (TotalSize <= 0) return null;
byte[] data = new byte[TotalSize];
int offset = 0;
for (int j = 0; j < Items.Count; j++)
{
var bdata = Items[j];
Buffer.BlockCopy(bdata, 0, data, offset, bdata.Length);
offset += bdata.Length;
}
MetaDataBlock db = new MetaDataBlock();
db.StructureNameHash = StructureNameHash;
db.DataLength = TotalSize;
db.Data = data;
return db;
}
}
public struct MetaBuilderPointer
{
public int BlockID { get; set; } //1-based id
public int Offset { get; set; } //byte offset
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public int Length { get; set; } //for temp use...
public uint Pointer
{
get
{
uint bidx = (((uint)BlockID) & 0xFFF);
uint offs = (((uint)Offset) & 0xFFFFF) << 12;
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return bidx + offs;
}
}
}
}