protected override Task <Stream> OpenFileStreamAsyncInternal(string path, FileAccess accessType)
{
if (Path.Equals(path, StringComparison.OrdinalIgnoreCase))
{
return(File.OpenAsync(accessType));
}
return(Task.FromResult(default(Stream)));
}
public async Task <string> ComputeMD5Async(IFileInfo file)
{
using (var inputStream = await file.OpenAsync(FileAccess.Read))
using (var hasher = IncrementalHash.CreateHash(HashAlgorithmName.MD5))
{
var buffer = new byte[1024 * 1024];
while (inputStream.Position < inputStream.Length)
{
var bytesRead = await inputStream.ReadAsync(buffer, 0, buffer.Length);
hasher.AppendData(buffer, 0, bytesRead);
}
var hashBytes = hasher.GetHashAndReset();
var hashString = BitConverter.ToString(hashBytes);
return(hashString.Replace("-", string.Empty));
}
}
public async Task InitializeAsync()
{
var stream = await ArchiveFile.OpenAsync(FileAccess.Read);
using (var archive = new ZipArchive(stream, ZipArchiveMode.Read))
{
foreach (var i in archive.Entries)
{
using (var entryStream = i.Open())
{
var memoryStream = new MemoryStream();
await entryStream.CopyToAsync(memoryStream);
EntriesBufferMapping.Add(Path.Combine(HandledScheme, i.FullName), memoryStream.ToArray());
}
}
}
}
