public void Write()
{
try
{
using (Stream objectsMS = GetTempStream())
{
using (Stream metaMS = GetTempStream())
{
using (AssetsWriter writer = new AssetsWriter(objectsMS))
{
int ctr = 0;
foreach (var obj in Metadata.ObjectInfos)
{
ctr++;
var offset = (int)objectsMS.Position;
obj.GetObjectForWrite().Write(writer);
writer.Flush();
obj.DataOffset = offset;
var origSize = obj.DataSize;
obj.DataSize = (int)(objectsMS.Position - obj.DataOffset);
writer.AlignTo(8);
}
}
using (AssetsWriter writer = new AssetsWriter(metaMS))
{
Metadata.Write(writer);
}
Header.FileSize = Header.HeaderSize + (int)objectsMS.Length + (int)metaMS.Length;
Header.ObjectDataOffset = Header.HeaderSize + (int)metaMS.Length;
int diff;
int alignment = 16; //or 32, I don't know which
//data has to be at least 4096 inward from the start of the file
if (Header.ObjectDataOffset < 4096)
{
diff = 4096 - Header.ObjectDataOffset;
}
else
{
diff = alignment - (Header.ObjectDataOffset % alignment);
if (diff == alignment)
{
diff = 0;
}
}
if (diff > 0)
{
Header.ObjectDataOffset += diff;
Header.FileSize += diff;
}
Header.MetadataSize = (int)metaMS.Length;
objectsMS.Seek(0, SeekOrigin.Begin);
metaMS.Seek(0, SeekOrigin.Begin);
lock (this)
{
try
{
CloseBaseStream();
FileProvider.DeleteFiles(AssetsRootPath.CombineFwdSlash(AssetsFilename + ".split*"));
using (Stream outputStream = GetTempStream())
{
using (AssetsWriter writer = new AssetsWriter(outputStream))
{
Header.Write(writer);
}
metaMS.CopyTo(outputStream);
if (diff > 0)
{
outputStream.Write(new byte[diff], 0, diff);
}
objectsMS.CopyTo(outputStream);
outputStream.Seek(0, SeekOrigin.Begin);
if (FileWasSplit)
{
int splitCtr = 0;
byte[] buffer = new byte[1024 * 1024];
do
{
Stream outFile = FileProvider.GetWriteStream($"{AssetsRootPath.CombineFwdSlash(AssetsFilename)}.split{splitCtr}");
var readLen = (int)(outputStream.Length - outputStream.Position);
if (readLen < buffer.Length)
{
outputStream.Read(buffer, 0, readLen);
outFile.Write(buffer, 0, readLen);
break;
}
outputStream.Read(buffer, 0, buffer.Length);
outFile.Write(buffer, 0, buffer.Length);
splitCtr++;
} while (true);
}
else
{
Stream writeStream = FileProvider.GetWriteStream(AssetsRootPath.CombineFwdSlash(AssetsFilename));
outputStream.CopyTo(writeStream);
}
}
FileProvider.Save();
_hasChanges = false;
foreach (var ptr in _knownPointers.Where(x => x.Owner.ObjectInfo.ParentFile == this && x.IsNew))
{
ptr.IsNew = false;
}
OpenBaseStream();
}
catch (Exception ex)
{
throw new Exception("CRITICAL: writing and reopening the file failed, the file is possibly destroyed and this object is in an unknown state.", ex);
}
}
}
}
}
finally
{
CleanupTempFiles();
}
}
public void Write()
{
MemoryStream objectsMS = new MemoryStream();
MemoryStream metaMS = new MemoryStream();
using (AssetsWriter writer = new AssetsWriter(objectsMS))
{
int ctr = 0;
foreach (var obj in Metadata.ObjectInfos)
{
ctr++;
obj.DataOffset = (int)objectsMS.Position;
obj.GetObjectForWrite().Write(writer);
writer.Flush();
var origSize = obj.DataSize;
obj.DataSize = (int)(objectsMS.Position - obj.DataOffset);
writer.AlignTo(8);
}
}
using (AssetsWriter writer = new AssetsWriter(metaMS))
{
Metadata.Write(writer);
}
Header.FileSize = Header.HeaderSize + (int)objectsMS.Length + (int)metaMS.Length;
Header.ObjectDataOffset = Header.HeaderSize + (int)metaMS.Length;
int diff;
int alignment = 16; //or 32, I don't know which
//data has to be at least 4096 inward from the start of the file
if (Header.ObjectDataOffset < 4096)
{
diff = 4096 - Header.ObjectDataOffset;
}
else
{
diff = alignment - (Header.ObjectDataOffset % alignment);
if (diff == alignment)
{
diff = 0;
}
}
if (diff > 0)
{
Header.ObjectDataOffset += diff;
Header.FileSize += diff;
}
Header.MetadataSize = (int)metaMS.Length;
objectsMS.Seek(0, SeekOrigin.Begin);
metaMS.Seek(0, SeekOrigin.Begin);
try
{
CloseBaseStream();
FileProvider.DeleteFiles(AssetsRootPath + AssetsFilename + ".split*");
using (MemoryStream outputStream = new MemoryStream())
{
using (AssetsWriter writer = new AssetsWriter(outputStream))
{
Header.Write(writer);
}
metaMS.CopyTo(outputStream);
if (diff > 0)
{
outputStream.Write(new byte[diff], 0, diff);
}
objectsMS.CopyTo(outputStream);
outputStream.Seek(0, SeekOrigin.Begin);
FileProvider.Write(AssetsRootPath + AssetsFilename, outputStream.ToArray(), true, true);
}
_hasChanges = false;
FileProvider.Save();
OpenBaseStream();
}
catch (Exception ex)
{
throw new Exception("CRITICAL: writing and reopening the file failed, the file is possibly destroyed and this object is in an unknown state.", ex);
}
}
public void Write(Stream outputStream)
{
MemoryStream objectsMS = new MemoryStream();
MemoryStream metaMS = new MemoryStream();
using (AssetsWriter writer = new AssetsWriter(objectsMS))
{
int ctr = 0;
foreach (var obj in Metadata.ObjectInfos.Select(x => x.Object))
{
ctr++;
obj.ObjectInfo.DataOffset = (int)objectsMS.Position;
obj.Write(writer);
writer.Flush();
var origSize = obj.ObjectInfo.DataSize;
obj.ObjectInfo.DataSize = (int)(objectsMS.Position - obj.ObjectInfo.DataOffset);
writer.AlignTo(8);
}
}
using (AssetsWriter writer = new AssetsWriter(metaMS))
{
Metadata.Write(writer);
}
Header.FileSize = Header.HeaderSize + (int)objectsMS.Length + (int)metaMS.Length;
Header.ObjectDataOffset = Header.HeaderSize + (int)metaMS.Length;
int diff = 0;
int alignment = 16; //or 32, I don't know which
//data has to be at least 4096 inward from the start of the file
if (Header.ObjectDataOffset < 4096)
{
diff = 4096 - Header.ObjectDataOffset;
}
else
{
diff = alignment - (Header.ObjectDataOffset % alignment);
if (diff == alignment)
{
diff = 0;
}
}
if (diff > 0)
{
Header.ObjectDataOffset += diff;
Header.FileSize += diff;
}
Header.MetadataSize = (int)metaMS.Length;
objectsMS.Seek(0, SeekOrigin.Begin);
metaMS.Seek(0, SeekOrigin.Begin);
using (AssetsWriter writer = new AssetsWriter(outputStream))
{
Header.Write(writer);
}
metaMS.CopyTo(outputStream);
if (diff > 0)
{
outputStream.Write(new byte[diff], 0, diff);
}
objectsMS.CopyTo(outputStream);
}
