public static HeaderBlock CreateOne()
{
HeaderBlock hb = new HeaderBlock
{
name = new byte[100],
mode = new byte[8],
uid = new byte[8],
gid = new byte[8],
size = new byte[12],
mtime = new byte[12],
chksum = new byte[8],
linkname = new byte[100],
magic = new byte[6],
version = new byte[2],
uname = new byte[32],
gname = new byte[32],
devmajor = new byte[8],
devminor = new byte[8],
prefix = new byte[155],
pad = new byte[12]
};
Array.Copy(Encoding.ASCII.GetBytes("ustar "), 0, hb.magic, 0, 6);
hb.version[0] = hb.version[1] = (byte)TarEntryType.File;
return(hb);
}
public static Dictionary <string, byte[]> GetExtractedStreams(string archive)
{
Dictionary <string, byte[]> result = new Dictionary <string, byte[]>();
byte[] block = new byte[512];
RawSerializer <HeaderBlock> serializer = new RawSerializer <HeaderBlock>();
int blocksToMunch = 0;
int remainingBytes = 0;
bool outputFlg = false;
string name = String.Empty;
List <byte> output = new List <byte>();
using (Stream fs = new GZipStream(File.Open(archive, FileMode.Open, FileAccess.Read), CompressionMode.Decompress, false))
{
while (fs.Read(block, 0, block.Length) > 0)
{
if (blocksToMunch > 0)
{
if (outputFlg)
{
int bytesToWrite = block.Length < remainingBytes ? block.Length : remainingBytes;
byte[] tmpArray = new byte[bytesToWrite];
Array.Copy(block, 0, tmpArray, 0, bytesToWrite);
output.AddRange(tmpArray);
remainingBytes -= bytesToWrite;
}
blocksToMunch--;
if (blocksToMunch == 0)
{
outputFlg = false;
}
continue;
}
if (name != string.Empty)
{
result.Add(name, output.ToArray());
output.Clear();
}
HeaderBlock hb = serializer.RawDeserialize(block);
if (name == String.Empty || (TarEntryType)hb.typeflag != TarEntryType.GnuLongName)
{
name = hb.GetName();
}
if (name == String.Empty)
{
break;
}
remainingBytes = hb.GetSize();
if (hb.typeflag == 0)
{
hb.typeflag = (byte)'0';
}
blocksToMunch = remainingBytes > 0 ? (remainingBytes - 1) / 512 + 1 : 0;
if ((TarEntryType)hb.typeflag == TarEntryType.File_Old ||
(TarEntryType)hb.typeflag == TarEntryType.File ||
(TarEntryType)hb.typeflag == TarEntryType.File_Contiguous)
{
outputFlg = true;
}
}
}
return(result);
}
