public async static Task <byte[]> ZlibDecompressAsync(this ReadOnlyMemory <byte> bytesToDecompress)
{
using var inputStream = new MemoryStream();
await inputStream.WriteAsync(bytesToDecompress);
using var outputStream = new MemoryStream();
inputStream.Position = 0;
using var decompressionStream = new InflaterInputStream(inputStream);
await decompressionStream.CopyToAsync(outputStream);
return(outputStream.ToArray());
}
private async Task DownloadGroup(IEnumerable <ManifestFile> group, Dictionary <string, PackageFile> manifest)
{
foreach (var mFile in group)
{
var ext = mFile.MetaData.Type > FileType.NORMAL_FILE ? ".compressed" : "";
var url = $"/projects/{project}/releases/{mFile.MetaData.Version}/files/{mFile.FullName.Replace('\\', '/')}{ext}";
PackageFile pFile;
if (!manifest.TryGetValue(url, out pFile))
{
throw new Exception("404");
}
var binUrl = $"projects/{project}/releases/{version}/packages/files/{pFile.BinName}";
while (true)
{
var req = WebRequest.CreateHttp(new Uri(region.UpdateBase, binUrl));
req.AddRange(pFile.Offset, pFile.Offset + pFile.Length - 1);
try {
using (var res = await req.GetResponseAsync())
using (var src = res.GetResponseStream()) {
using (var save = this.GetStream(mFile, true)) {
long start = save.Position;
if (mFile.MetaData.Type > FileType.NORMAL_FILE && mFile.MetaData.Type != FileType.COMPRESSED_ARCHIVE)
{
using (var wrap = new InflaterInputStream(src))
await wrap.CopyToAsync(save);
}
else
{
await src.CopyToAsync(save);
}
if (save.Position - start != mFile.CompletedSize)
{
throw new Exception("File not properly downloaded: " + mFile.FullName);
}
}
}
break;
} catch (ZipException) {
} catch (IOException) { }
}
Interlocked.Add(ref patchingDone, mFile.CompletedSize);
}
}