/// <summary>
/// Writes a long name entry to the archive.
/// </summary>
/// <param name="name">The long name.</param>
/// <exception cref="System.ArgumentNullException">Thrown if <paramref name="name" /> is null.</exception>
private void WriteLongNameEntry(string name)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
name = PathHelper.TarNormalize(name);
var header = new TarHeader
{
Name = "././@LongLink", // Is supposed to say LongLink, even if it's a long name
Mode = new FileModeGroup("644"), // Seems to be the default for long links?
Size = name.Length + 1,
Flag = TarHeaderFlag.LongName
};
// Write the header.
WriteHeader(header);
// Write the content.
var length = _stream.Write(name, name.Length + 1);
WritePadding(length);
}
/// <summary>
/// Writes a tar header for a file entry to the output stream.
/// </summary>
/// <param name="path">The path to the file in the archive.</param>
/// <param name="size">The size of the file.</param>
/// <param name="lastModification">The last modification date in UTC of the file.</param>
/// <param name="userId">The user identifier.</param>
/// <param name="groupId">The group identifier.</param>
/// <param name="fileMode">The file mode.</param>
/// <exception cref="System.ArgumentNullException">Thrown if <paramref name="path" /> is null.</exception>
public void WriteFileEntry(string path, long size, DateTime lastModification, string userId, string groupId, IFileModeGroup fileMode)
{
if (path == null)
{
throw new ArgumentNullException(nameof(path));
}
AssertNotDisposed();
path = PathHelper.TarNormalize(path);
if (path.Length >= 100)
{
WriteLongNameEntry(path);
// NOTE: GNU tar puts 100 characters into the name field, without
// the null terminator. However, the GNU tar specifications state
// the name should end with a null terminator. Sticking to the
// specifications here.
path = path.Substring(0, 99);
}
var header = new TarHeader
{
Name = path,
Mode = fileMode,
Size = size,
Flag = TarHeaderFlag.NormalFileAlt,
UserId = userId,
GroupId = groupId,
LastModification = lastModification
};
WriteHeader(header);
}
