void init()
{
stream.Position = posOffset;
var headerbegin = BitConverter.ToInt32(readbytes(stream, sizeof(int)), 0);
header = DeserialzePkgHeader(headerbegin);
files = new Hashtable(header.Files.Length);
foreach (var item in header.Files)
{
files.Add(item.name, item);
}
}
private PkgHeader DeserialzePkgHeader(int headerbegin)
{
stream.Position = headerbegin;
PkgHeader header;
using (var gz = new GZipStream(stream, CompressionMode.Decompress, true)) {
var rs = new StreamReader(gz, Encoding.UTF8);
var json = rs.ReadToEnd();
header = SimpleJson.DeserializeObject <PkgHeader>(json);
}
posOffset = 0;
return(header);
}
public static void Create(Stream output, IEnumerable <AddingFile> filesToAdd, TextWriter debugoutput = null)
{
var header = new PkgHeader();
header.NZipMinVersion = 1;
header.NZipVersion = 2;
var files = new List <NZFileinfo>();
var beginPosition = output.Position;
output.Write(BitConverter.GetBytes(-1), 0, sizeof(int));
int lengthsum = (int)output.Position;
int i = 0;
foreach (var x in filesToAdd)
{
var nfi = new NZFileinfo();
nfi.name = x.name;
debugoutput?.WriteLine("[{1}/{2}] \"{0}\"", nfi.name, i + 1, (filesToAdd as ICollection)?.Count.ToString() ?? "NaN");
#if NET45
using (var gz = new GZipStream(output, CompressionLevel.Optimal, true)) {
#else
using (var gz = new GZipStream(output, CompressionMode.Compress, true)) {
#endif
using (var file = x.file()) {
nfi.length = file.Length;
CopyStream(file, gz);
}
}
nfi.pos = lengthsum;
var curPos = (int)output.Position;
nfi.ziplen = curPos - lengthsum;
nfi.lwt = ConvertDateTimeInt(x.lwt);
files.Add(nfi);
lengthsum = curPos;
i++;
}
header.Files = files.ToArray();
header.CreateTime = ConvertDateTimeInt(DateTime.UtcNow);
debugoutput?.WriteLine("[Finishing] Writing PkgInfo...");
using (var ms = new MemoryStream(4 * 1024)) {
using (var gz = new GZipStream(ms, CompressionMode.Compress, true)) {
SerializePkgHeader(header, gz);
}
ms.WriteTo(output);
}
output.Position = beginPosition;
output.Write(BitConverter.GetBytes(lengthsum), 0, sizeof(int));
debugoutput?.WriteLine("Finished!");
}
private static void SerializePkgHeader(PkgHeader header, GZipStream gz)
{
var bytes = Encoding.UTF8.GetBytes(SimpleJson.SerializeObject(header));
gz.Write(bytes, 0, bytes.Length);
}
