public static void WriteEntry(Stream stream, ArchiveEntry entry, Stream data = null)
{
var targetPath = entry.TargetPath;
if (!targetPath.StartsWith("."))
{
targetPath = "." + targetPath;
}
// Handle long file names (> 99 characters). If this is the case, add a "././@LongLink" pseudo-entry
// which contains the full name.
if (targetPath.Length > 99)
{
// Must include a trailing \0
var nameLength = Encoding.UTF8.GetByteCount(targetPath);
byte[] entryName = new byte[nameLength + 1];
Encoding.UTF8.GetBytes(targetPath, 0, targetPath.Length, entryName, 0);
ArchiveEntry nameEntry = new ArchiveEntry()
{
Mode = entry.Mode,
Modified = entry.Modified,
TargetPath = "././@LongLink",
Owner = entry.Owner,
Group = entry.Group
};
using (MemoryStream nameStream = new MemoryStream(entryName))
{
WriteEntry(stream, nameEntry, nameStream);
}
targetPath = targetPath.Substring(0, 99);
}
var isDir = entry.Mode.HasFlag(LinuxFileMode.S_IFDIR);
var isLink = !isDir && !string.IsNullOrWhiteSpace(entry.LinkTo);
var isFile = !isDir && !isLink;
TarTypeFlag type;
if (entry.TargetPath == "././@LongLink")
{
type = TarTypeFlag.LongName;
}
else if (isFile)
{
type = TarTypeFlag.RegType;
}
else if (isDir)
{
type = TarTypeFlag.DirType;
}
else
{
type = TarTypeFlag.SymType;
}
bool dispose = false;
if (data == null)
{
if (isFile)
{
dispose = true;
data = File.OpenRead(entry.SourceFilename);
}
else
{
data = new MemoryStream();
}
}
try
{
var hdr = new TarHeader()
{
// No need to set the file type, the tar header has a special field for that.
FileMode = entry.Mode & LinuxFileMode.PermissionsMask,
DevMajor = null,
DevMinor = null,
FileName = targetPath,
FileSize = (uint)data.Length,
GroupId = 0,
UserId = 0,
GroupName = entry.Group,
LinkName = isLink ? entry.LinkTo : string.Empty,
Prefix = string.Empty,
TypeFlag = type,
UserName = entry.Owner,
Version = null,
LastModified = entry.Modified,
Magic = "ustar"
};
WriteEntry(stream, hdr, data);
}
finally
{
if (dispose)
{
data.Dispose();
}
}
}
