private IEnumerable<Chunk> PrepareChunks()
{
var chunks = new List<Chunk>();
var n = (int)(batchPosition / chunkSizeBytes);
foreach( var chunk in batch )
{
var c = new Chunk
{
FileId = filesInfoId,
Num = n++,
Data = chunk
};
chunks.Add(c);
batchPosition += chunk.Length;
sha256.AppendData(chunk);
}
return chunks;
}
private byte[] GetChunkHelper(long n, Chunk doc)
{
var data = doc.Data;
var chunkSizeBytes = FileInfo.ChunkSizeBytes;
var lastChunk = FileInfo.Length / FileInfo.ChunkSizeBytes;
var expectedChunkSize = n == lastChunk ? FileInfo.Length % chunkSizeBytes : chunkSizeBytes;
if( data.Length != expectedChunkSize )
{
throw new ChunkException(FileInfo.Id, n, "the wrong size");
}
return data;
}