public override IEnumerable<ContentInfo> GetContentInfos(string path)
{
long length;
var contentInfos = new List<ContentInfo>();
try
{
length = new FileInfo(path).Length;
}
catch (FileNotFoundException)
{
yield break;
}
yield return new ContentInfo(this.DefaultContentName, length);
var hFile = Kernel32.CreateFileW(path, (int)FileAccess.Read, (int)FileShare.ReadWrite, IntPtr.Zero, (int)FileMode.Open, (int)Kernel32.FileFlags.BackupSemantics, IntPtr.Zero);
if (hFile.ToInt32() == Kernel32.INVALID_HANDLE_VALUE)
{
yield break;
}
try
{
var sid = new Kernel32.WIN32_STREAM_ID();
var dwStreamHeaderSize = Marshal.SizeOf(sid);
var context = new IntPtr();
var shouldContinue = true;
while (shouldContinue)
{
var lRead = 0;
shouldContinue = Kernel32.BackupRead(hFile, ref sid, dwStreamHeaderSize, ref lRead, false, false, ref context);
if (shouldContinue && lRead == dwStreamHeaderSize)
{
if (sid.dwStreamNameSize > 0)
{
var pName = Marshal.AllocHGlobal(sid.dwStreamNameSize);
lRead = 0;
try
{
shouldContinue = Kernel32.BackupRead(hFile, pName, sid.dwStreamNameSize, ref lRead, false, false, ref context);
var bName = new char[sid.dwStreamNameSize];
Marshal.Copy(pName, bName, 0, sid.dwStreamNameSize);
// Name Format ":NAME:$DATA\0"
var streamName = new string(bName);
var i = streamName.IndexOf(Kernel32.STREAM_SEPERATOR, 1, StringComparison.Ordinal);
if (i > -1)
{
streamName = streamName.Substring(1, i - 1);
}
else
{
i = streamName.IndexOf('\0');
if (i > -1)
{
streamName = streamName.Substring(1, i - 1);
}
}
contentInfos.Add(new ContentInfo(streamName, sid.Size.ToInt64()));
}
finally
{
Marshal.FreeHGlobal(pName);
}
}
// Skip the stream contents
var l = 0;
var h = 0;
shouldContinue = Kernel32.BackupSeek(hFile, sid.Size.Low, sid.Size.High, ref l, ref h, ref context);
}
else
{
break;
}
}
}
finally
{
Kernel32.CloseHandle(hFile);
}
foreach (var contentInfo in contentInfos)
{
yield return contentInfo;
}
}
public override IEnumerable <ContentInfo> GetContentInfos(string path)
{
long length;
var contentInfos = new List <ContentInfo>();
try
{
length = new FileInfo(path).Length;
}
catch (FileNotFoundException)
{
yield break;
}
yield return(new ContentInfo(this.DefaultContentName, length));
var hFile = Kernel32.CreateFileW(path, (int)FileAccess.Read, (int)FileShare.ReadWrite, IntPtr.Zero, (int)FileMode.Open, (int)Kernel32.FileFlags.BackupSemantics, IntPtr.Zero);
if (hFile.ToInt32() == Kernel32.INVALID_HANDLE_VALUE)
{
yield break;
}
try
{
var sid = new Kernel32.WIN32_STREAM_ID();
var dwStreamHeaderSize = Marshal.SizeOf(sid);
var context = new IntPtr();
var shouldContinue = true;
while (shouldContinue)
{
var lRead = 0;
shouldContinue = Kernel32.BackupRead(hFile, ref sid, dwStreamHeaderSize, ref lRead, false, false, ref context);
if (shouldContinue && lRead == dwStreamHeaderSize)
{
if (sid.dwStreamNameSize > 0)
{
var pName = Marshal.AllocHGlobal(sid.dwStreamNameSize);
lRead = 0;
try
{
shouldContinue = Kernel32.BackupRead(hFile, pName, sid.dwStreamNameSize, ref lRead, false, false, ref context);
var bName = new char[sid.dwStreamNameSize];
Marshal.Copy(pName, bName, 0, sid.dwStreamNameSize);
// Name Format ":NAME:$DATA\0"
var streamName = new string(bName);
var i = streamName.IndexOf(Kernel32.STREAM_SEPERATOR, 1, StringComparison.Ordinal);
if (i > -1)
{
streamName = streamName.Substring(1, i - 1);
}
else
{
i = streamName.IndexOf('\0');
if (i > -1)
{
streamName = streamName.Substring(1, i - 1);
}
}
contentInfos.Add(new ContentInfo(streamName, sid.Size.ToInt64()));
}
finally
{
Marshal.FreeHGlobal(pName);
}
}
// Skip the stream contents
var l = 0;
var h = 0;
shouldContinue = Kernel32.BackupSeek(hFile, sid.Size.Low, sid.Size.High, ref l, ref h, ref context);
}
else
{
break;
}
}
}
finally
{
Kernel32.CloseHandle(hFile);
}
foreach (var contentInfo in contentInfos)
{
yield return(contentInfo);
}
}
