private static void SeekToBeginOfBlobName(FileLocation location, Stream stream)
{
var idx = 1;
while (true)
{
stream.Seek(location.DataStartOffset - idx, SeekOrigin.Begin);
var b = stream.ReadByte();
if (b == 0 && idx == 1)
{
idx += 8;
continue;
}
if (b == 0 || b == 1)
{
break;
}
idx++;
}
}
// must hold lock
internal long Commit(bool perfect)
{
if (lastFileCommitted)
{
return(ms.Length);
}
ms.Seek(startOfBlobHeader, SeekOrigin.Begin);
var length = (int)ms.Length;
var blobLength = length - startOfBlobData;
ms.WriteByte((byte)(blobLength >> 0));
ms.WriteByte((byte)(blobLength >> 8));
ms.WriteByte((byte)(blobLength >> 16));
ms.WriteByte((byte)(blobLength >> 24));
ms.Seek(2, SeekOrigin.Current);
ms.WriteByte(perfect ? (byte)1 : (byte)0);
ms.Seek(length, SeekOrigin.Begin);
if (perfect)
{
lastCommittedLength = length;
var location = new FileLocation()
{
BlobName = currentFileName,
PackageFileName = this.fileName,
DataStartOffset = (int)startOfBlobData,
Package = this,
Length = length - (int)startOfBlobData,
Date = currentFileTime
};
directory.locations[currentFileName] = location;
directory.locationsToAdd.Add(location);
}
lastFileCommitted = true;
return(length);
}
// must hold lock
internal long Commit(bool perfect)
{
ms.Seek(startOfBlobHeader, SeekOrigin.Begin);
var length = (int)ms.Length;
var blobLength = length - startOfBlobData;
ms.WriteByte((byte)(blobLength >> 0));
ms.WriteByte((byte)(blobLength >> 8));
ms.WriteByte((byte)(blobLength >> 16));
ms.WriteByte((byte)(blobLength >> 24));
ms.Seek(2, SeekOrigin.Current);
ms.WriteByte(perfect ? (byte)1 : (byte)0);
ms.Seek(length, SeekOrigin.Begin);
if (perfect)
{
lastCommittedLength = length;
var location = new FileLocation()
{
BlobName = currentFileName,
PackageFileName = this.fileName,
DataStartOffset = (int)startOfBlobData,
Package = this,
Length = length - (int)startOfBlobData
};
directory.locations[currentFileName] = location;
directory.locationsToAdd.Add(location);
}
return length;
}
private static void SeekToBeginOfBlobName(FileLocation location, Stream stream)
{
var idx = 1;
while (true)
{
stream.Seek(location.DataStartOffset - idx, SeekOrigin.Begin);
var b = stream.ReadByte();
if (b == 0 || b == 1) break;
idx++;
}
}
