public bool ExtractTo(CBackupReader BackupFile, string TargetPath)
{
// Ensure that the target path has a trailing '\'
if (TargetPath[TargetPath.Length - 1] != '\\')
{
TargetPath += '\\';
}
if ((mType == ENodeType.Root) || (mType == ENodeType.Set))
{
throw new System.Exception("Tape and set nodes can not be extracted. Only volume, folder or file nodes can be extracted.");
}
else if (mType == ENodeType.Volume)
{
System.IO.DirectoryInfo dirinfo = System.IO.Directory.CreateDirectory(TargetPath);
foreach (CCatalogNode node in mNodes)
{
node.ExtractTo(BackupFile, TargetPath);
}
}
else if (mType == ENodeType.Folder)
{
System.IO.DirectoryInfo dirinfo = System.IO.Directory.CreateDirectory(TargetPath + mName);
foreach (CCatalogNode node in mNodes)
{
node.ExtractTo(BackupFile, dirinfo.FullName);
}
}
else if (mType == ENodeType.File)
{
// Create the target directory if it does not exist
System.IO.Directory.CreateDirectory(TargetPath);
BackupFile.Stream.BaseStream.Seek(mOffset, System.IO.SeekOrigin.Begin);
System.IO.FileStream file = new System.IO.FileStream(TargetPath + mName, System.IO.FileMode.Create);
CFileDescriptorBlock fil = (CFileDescriptorBlock)BackupFile.Stream.ReadDBLK();
foreach (CDataStream data in fil.Streams)
{
if (data.Header.StreamID == "STAN")
{
file.Write(data.Data, 0, data.Data.Length);
}
}
file.Close();
}
return(true);
}
/// <summary>
/// Reads the entire backup file and returns a root catalog node.
/// The root node contains backup sets/volumes/directories/files
/// as child nodes.
/// </summary>
public CCatalogNode ReadCatalog()
{
// Set to true to cancel reading
mCancel = false;
// Read the media header
CTapeHeaderDescriptorBlock tape = (CTapeHeaderDescriptorBlock)mStream.ReadDBLK();
// Read soft file mark
CSoftFilemarkDescriptorBlock file = (CSoftFilemarkDescriptorBlock)mStream.ReadDBLK();
// Create the root catalog node
CCatalogNode node = new CCatalogNode(tape.MediaName, ENodeType.Root, 0);
CCatalogNode nLastSet = null;
CCatalogNode nLastVolume = null;
CCatalogNode nLastDir = null;
// Get next block type
EBlockType bt = mStream.PeekNextBlockType();
while ((bt != EBlockType.MTF_EOTM) && (bt != 0) && (mCancel == false))
{
// Read next block
CDescriptorBlock block = mStream.ReadDBLK();
// Add to catalog
if (bt == EBlockType.MTF_SSET)
{
CStartOfDataSetDescriptorBlock sset = (CStartOfDataSetDescriptorBlock)block;
CCatalogNode cnode = node.AddSet("Set: " + sset.DataSetNumber + " - " + sset.DataSetName, block.StartPosition);
nLastSet = cnode;
}
else if (bt == EBlockType.MTF_VOLB)
{
CVolumeDescriptorBlock vol = (CVolumeDescriptorBlock)block;
CCatalogNode cnode = nLastSet.AddVolume(vol.DeviceName, block.StartPosition);
nLastVolume = cnode;
}
else if (bt == EBlockType.MTF_DIRB)
{
CDirectoryDescriptorBlock dir = (CDirectoryDescriptorBlock)block;
// Check if the directory name is contained in a data stream
CCatalogNode cnode = null;
if ((dir.DIRBAttributes & EDIRBAttributes.DIRB_PATH_IN_STREAM_BIT) != 0)
{
foreach (CDataStream data in dir.Streams)
{
if (data.Header.StreamID == "PNAM")
{
if (dir.StringType == EStringType.ANSI)
{
System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
string str = encoding.GetString(data.Data);
str = str.Substring(0, str.Length - 1);
cnode = nLastVolume.AddFolder(str, block.StartPosition);
}
else if (dir.StringType == EStringType.Unicode)
{
System.Text.UnicodeEncoding encoding = new System.Text.UnicodeEncoding();
string str = encoding.GetString(data.Data);
str = str.Substring(0, str.Length - 1);
cnode = nLastVolume.AddFolder(str, block.StartPosition);
}
}
}
}
else
{
cnode = nLastVolume.AddFolder(dir.DirectoryName.Substring(0, dir.DirectoryName.Length - 1), block.StartPosition);
}
if (cnode != null)
{
nLastDir = cnode;
}
}
else if (bt == EBlockType.MTF_FILE)
{
CFileDescriptorBlock fil = (CFileDescriptorBlock)block;
// Check if the file name is contained in a data stream
CCatalogNode cnode = null;
if ((fil.FileAttributes & EFileAttributes.FILE_NAME_IN_STREAM_BIT) != 0)
{
foreach (CDataStream data in fil.Streams)
{
if (data.Header.StreamID == "FNAM")
{
if (fil.StringType == EStringType.ANSI)
{
System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
string str = encoding.GetString(data.Data);
cnode = nLastDir.AddFile(str, block.StartPosition);
}
else if (fil.StringType == EStringType.Unicode)
{
System.Text.UnicodeEncoding encoding = new System.Text.UnicodeEncoding();
string str = encoding.GetString(data.Data);
cnode = nLastDir.AddFile(str, block.StartPosition);
}
}
}
}
else
{
cnode = nLastDir.AddFile(fil.FileName, block.StartPosition);
}
}
// Get next block type
bt = mStream.PeekNextBlockType();
// Check progress
if (mStream.BaseStream.Position > mLastPos + mIncrement)
{
mLastPos = mStream.BaseStream.Position;
OnProgressChange((int)((float)mLastPos / (float)mStream.BaseStream.Length * 100.0f));
}
}
return(node);
}
