/// <summary>
/// Parse TarHeader information from a header buffer.
/// </summary>
/// <param name = "header">
/// The tar entry header buffer to get information from.
/// </param>
public void ParseBuffer(byte[] header)
{
if (header == null)
{
throw new ArgumentNullException(nameof(header));
}
int offset = 0;
name = ParseName(header, offset, NAMELEN).ToString();
offset += NAMELEN;
mode = (int)ParseOctal(header, offset, MODELEN);
offset += MODELEN;
UserId = (int)ParseOctal(header, offset, UIDLEN);
offset += UIDLEN;
GroupId = (int)ParseOctal(header, offset, GIDLEN);
offset += GIDLEN;
Size = ParseBinaryOrOctal(header, offset, SIZELEN);
offset += SIZELEN;
ModTime = GetDateTimeFromCTime(ParseOctal(header, offset, MODTIMELEN));
offset += MODTIMELEN;
checksum = (int)ParseOctal(header, offset, CHKSUMLEN);
offset += CHKSUMLEN;
TypeFlag = header[offset++];
LinkName = ParseName(header, offset, NAMELEN).ToString();
offset += NAMELEN;
Magic = ParseName(header, offset, MAGICLEN).ToString();
offset += MAGICLEN;
if (Magic == "ustar")
{
Version = ParseName(header, offset, VERSIONLEN).ToString();
offset += VERSIONLEN;
UserName = ParseName(header, offset, UNAMELEN).ToString();
offset += UNAMELEN;
GroupName = ParseName(header, offset, GNAMELEN).ToString();
offset += GNAMELEN;
DevMajor = (int)ParseOctal(header, offset, DEVLEN);
offset += DEVLEN;
DevMinor = (int)ParseOctal(header, offset, DEVLEN);
offset += DEVLEN;
string prefix = ParseName(header, offset, PREFIXLEN).ToString();
if (!string.IsNullOrEmpty(prefix))
{
Name = prefix + '/' + Name;
}
}
isChecksumValid = Checksum == TarHeader.MakeCheckSum(header);
}
