public async Task <IActionResult> SiaZip(string hash, [FromQuery] string path)
{
var zipStream = new System.IO.Compression.HttpZipStream("https://siasky.net/" + hash);
if (await zipStream.GetContentLengthAsync() == -1)
{
return(NotFound("No such Sia hash."));
}
using (zipStream)
{
await zipStream.GetContentLengthAsync();
string content = "";
var entryList = await zipStream.GetEntriesAsync();
bool found = false;
foreach (var e in entryList)
{
if (e.FileName != path)
{
continue;
}
found = true;
await zipStream.ExtractAsync(e, async (entryStream) =>
{
byte[] buffer = new byte[4096];
while (true)
{
int result = await entryStream.ReadAsync(buffer, content.Length, 4096);
if (result == 0)
{
break;
}
content += buffer.ToString();
}
});
}
if (!found)
{
return(NotFound("No such file in archive."));
}
System.Net.Mime.ContentDisposition cd = new System.Net.Mime.ContentDisposition
{
FileName = path,
Inline = false,
};
Response.Headers.Add("Content-Disposition", cd.ToString());
return(View(content));
}
}
public async void ExampleStream_ContentLength_MustBe_9702kbytes()
{
using (var streamZip = new HttpZipStream(httpUrl))
{
var contentLength = await streamZip.GetContentLengthAsync();
Assert.Equal(9935427, contentLength);
}
}
public async void ExampleStream_Entries_MustHave_36items()
{
using (var streamZip = new HttpZipStream(httpUrl))
{
var contentLength = await streamZip.GetContentLengthAsync();
var entryList = await streamZip.GetEntriesAsync();
Assert.Equal(36, entryList.Count);
}
}
public async void ExampleStream_LargerEntry_MustBe_0001_With_347kbytes()
{
using (var streamZip = new HttpZipStream(httpUrl))
{
var contentLength = await streamZip.GetContentLengthAsync();
var entryList = await streamZip.GetEntriesAsync();
var largerEntry = entryList
.OrderByDescending(x => x.CompressedSize)
.Take(1)
.FirstOrDefault();
Assert.Equal("Blue Beetle [1967] #01 - 0001.jpg", largerEntry.FileName);
Assert.Equal(355736, largerEntry.CompressedSize);
}
}
public async void ExampleStream_SmallerEntryExtraction_MustResult_MemoryStream_With_227kbytes()
{
using (var streamZip = new HttpZipStream(httpUrl))
{
var contentLength = await streamZip.GetContentLengthAsync();
var entryList = await streamZip.GetEntriesAsync();
var smallerEntry = entryList
.OrderBy(x => x.CompressedSize)
.Take(1)
.FirstOrDefault();
long memoryStreamLength = 0;
await streamZip.ExtractAsync(smallerEntry, (MemoryStream memoryStream) =>
{
memoryStreamLength = memoryStream.Length;
});
Assert.Equal(232660, memoryStreamLength);
}
}