public virtual IObjectInfo GetObjectInfo(PPtr pptr)
{
if (pptr.FileID == 0 && pptr.PathID == 0)
{
return(new NullObjectInfo(pptr.TypeID));
}
if (pptr.FileID == 0)
{
ObjectInfo info = null;
if (objects.TryGetValue(pptr.PathID, out info))
{
return(info);
}
return(new MissingObjectInfo(this, pptr.PathID, pptr.TypeID));
}
ArchiveRef assetRef = this.archiveRefs[pptr.FileID];
ObjectArchive asset = this.Bundle.GetAssetArchive(assetRef.FileName) as ObjectArchive;
if (asset != null)
{
return(asset.GetObjectInfo(pptr.PathID));
}
var container = this.Bundle.ArchiveContainer;
if (container == null)
{
return(new MissingObjectInfo(null, pptr.PathID, pptr.TypeID));
}
return(container.GetObjectInfo(assetRef.FileName, pptr.PathID));
}
protected virtual void Load(ArchiveBinaryReader reader)
{
try
{
long startPos = reader.BaseStream.Position;
int headerSize = reader.ReadInt32(true);
var fileSize = reader.ReadInt32(true);
this.Format = reader.ReadInt32(true);
this.assetDataOffset = reader.ReadUInt32(true);
if (this.Format < 17)
{
throw new NotSupportedException(string.Format("The AssetBundle's format not supported,format:{0}", this.Format));
}
bool bigEndian = reader.ReadBoolean();
reader.IsBigEndian = bigEndian;
reader.ReadBytes(3);
this.Version = reader.ReadCString();
this.TargetPlatform = reader.ReadUInt32();
//读取类型树
var hasTypeTree = reader.ReadBoolean();
if (!hasTypeTree)
{
throw new NotSupportedException("Missing type tree, not supported");
}
Hash128 zero = new Hash128(new byte[16]);
var typeTreeCount = reader.ReadInt32();
for (var i = 0; i < typeTreeCount; i++)
{
var typeId = reader.ReadInt32();
reader.ReadByte();
var scriptIndex = reader.ReadInt16();
var hash = reader.ReadHash128();
var propertiesHash = typeId == 114 ? reader.ReadHash128() : zero;
var tree = new TypeTree(this, i, Enum.IsDefined(typeof(TypeID), typeId) ? (TypeID)typeId : TypeID.UnknownType, scriptIndex, hash, propertiesHash);
tree.Load(reader);
this.trees.Add(tree);
}
//读取对象信息
var objectCount = reader.ReadInt32();
List <ObjectItem> objectItems = new List <ObjectItem>();
for (var i = 0; i < objectCount; i++)
{
reader.Align(4);
var id = reader.ReadInt64();
var offset = reader.ReadInt32();
var size = reader.ReadInt32();
var index = reader.ReadInt32();
var typeTree = trees[index];
var item = new ObjectItem(id, offset, size, typeTree);
objectItems.Add(item);
}
//自定义脚本预载表
var scriptCount = reader.ReadInt32();
for (int i = 0; i < scriptCount; i++)
{
var fileID = reader.ReadInt32();
var pathID = reader.ReadInt64();
var pptr = new PPtr(fileID, pathID, "PPtr<MonoScript>");
this.preloadScripts.Add(pptr);
}
//读取共享对象
int refCount = reader.ReadInt32();
for (int i = 1; i <= refCount; i++)
{
var name = reader.ReadCString();
var guid = reader.ReadHash128();
var type = reader.ReadInt32();
var fileName = reader.ReadCString();
fileName = string.IsNullOrEmpty(fileName) ? "" : fileName.ToLower();
var assetRef = new ArchiveRef(i, name, type, guid, fileName);
this.archiveRefs.Add(assetRef);
}
foreach (var item in objectItems)
{
TypeID typeId = item.TypeTree.TypeID;
if (typeId != TypeID.AssetBundle && typeId != TypeID.PreloadData)
{
continue;
}
ObjectInfo info = new ObjectInfo(this, item.ID, item.TypeTree, item.Offset, item.Size, false);
if (info.TypeID == TypeID.AssetBundle)
{
AssetBundle assetBundle = info.GetObject <AssetBundle>();
this.AssetBundle = assetBundle;
Bundle.AssetBundle = assetBundle;
}
else if (info.TypeID == TypeID.PreloadData)
{
PreloadData preloadData = info.GetObject <PreloadData>();
this.PreloadData = preloadData;
}
}
foreach (var item in objectItems)
{
TypeID typeId = item.TypeTree.TypeID;
if (typeId == TypeID.AssetBundle || typeId == TypeID.PreloadData)
{
continue;
}
bool isPublic = !this.Bundle.IsStreamed && this.AssetBundle != null && this.AssetBundle.IsPublic(item.ID);
ObjectInfo info = new ObjectInfo(this, item.ID, item.TypeTree, item.Offset, item.Size, isPublic);
this.objects.Add(info.ID, info);
if (info.IsPotentialRedundancy)
{
reader.BaseStream.Seek(this.assetDataOffset + item.Offset, SeekOrigin.Begin);
FeatureInfo featureInfo = this.extractor.Extract(info, reader);
info.Fingerprint = new PropertiesFingerprint(info, featureInfo.References, featureInfo.PropertyHash);
info.Name = featureInfo.Name;
info.Resources = featureInfo.Resources;
}
else
{
info.Fingerprint = new IdentifierFingerprint(info.ID, this.Name);
}
}
}
catch (Exception e)
{
Debug.LogErrorFormat("{0}", e);
}
}