public void WriteFileTo(NZFileinfo file, Stream to, bool writeRawGzipData = false)
{
if (StreamProvider == null)
{
lock (streamlocker) {
stream.Position = posOffset + file.pos;
if (writeRawGzipData)
{
CopyStream(stream, to, file.ziplen);
}
else
{
using (var gz = new GZipStream(stream, CompressionMode.Decompress, true)) {
CopyStream(gz, to, file.length);
}
}
}
}
else
{
using (var stream = StreamProvider()) {
stream.Position = posOffset + file.pos;
if (writeRawGzipData)
{
CopyStream(stream, to, file.ziplen);
}
else
{
using (var gz = new GZipStream(stream, CompressionMode.Decompress, true)) {
CopyStream(gz, to, file.length);
}
}
}
}
}
public byte[] GetFileBytes(NZFileinfo fileInfo)
{
byte[] bytes = new byte[fileInfo.length];
var ms = new MemoryStream(bytes);
WriteFileTo(fileInfo, ms, false);
return(bytes);
}
public NZFileinfo[] GetFiles()
{
var files = new NZFileinfo[header.Files.Length];
for (int i = 0; i < header.Files.Length; i++)
{
files[i] = header.Files[i];
}
return(files);
}
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!");
}
public async Task WriteFileToAsync(NZFileinfo file, Stream to, bool writeRawGzipData = false)
{
if (StreamProvider == null)
{
throw new Exception("async is not suppoted without StreamProvider.");
}
else
{
using (var stream = StreamProvider()) {
stream.Position = posOffset + file.pos;
if (writeRawGzipData)
{
await CopyStreamAsync(stream, to, file.ziplen);
}
else
{
using (var gz = new GZipStream(stream, CompressionMode.Decompress, true)) {
await CopyStreamAsync(gz, to, file.length);
}
}
}
}
}
