private async Task CalculateHash(
IDispatcher d,
HashProgress notifier)
{
if (notifier != null)
{
Action action = () => notifier(Path, 0);
if (d == null)
{
action();
}
else
{
d.Execute(action);
}
}
//TODO - exception handling
StorageFile file = await GetFromRoot(m_path, m_root);
int num_chunks = (int) (GetSize()/Chunker.chunk_size) + 1;
int hash_size = num_chunks*32;
float current_chunk = 0;
var hash_builder = new StringBuilder(hash_size);
m_hash = "";
var chunker = new Chunker(GetSize());
foreach (Chunk chunk in chunker.GetChunks())
{
using (IRandomAccessStream inputStream = await file.OpenAsync(FileAccessMode.Read))
{
using (var dataReader = new DataReader(inputStream.GetInputStreamAt(chunk.Start)))
{
await dataReader.LoadAsync(chunk.Length);
IBuffer buf = dataReader.ReadBuffer(chunk.Length);
IBuffer hashed = m_alg.HashData(buf);
hash_builder.Append(CryptographicBuffer.EncodeToHexString(hashed));
}
}
current_chunk++;
if (notifier != null)
{
float percent_done = current_chunk/num_chunks;
Action action = () => notifier(Path, percent_done*100);
if (d == null)
{
action();
}
else
{
d.Execute(action);
}
}
}
m_hash = hash_builder.ToString();
if (hash_size > 32) //hash the hash
{
// Convert the string to UTF8 binary data.
IBuffer hashbuf = CryptographicBuffer.ConvertStringToBinary(m_hash, BinaryStringEncoding.Utf8);
IBuffer hashed = m_alg.HashData(hashbuf);
m_hash = CryptographicBuffer.EncodeToHexString(hashed);
}
if (notifier != null)
{
Action action = () => notifier(Path, 100);
if (d == null)
{
action();
}
else
{
d.Execute(action);
}
}
}
private async Task CalculateHash(
IDispatcher d,
HashProgress notifier)
{
if (notifier != null)
{
Action action = () => notifier(Path, 0);
if (d == null)
{
action();
}
else
{
d.Execute(action);
}
}
//TODO - exception handling
StorageFile file = await GetFromRoot(m_path, m_root);
int num_chunks = (int)(GetSize() / Chunker.chunk_size) + 1;
int hash_size = num_chunks * 32;
float current_chunk = 0;
var hash_builder = new StringBuilder(hash_size);
m_hash = "";
var chunker = new Chunker(GetSize());
foreach (Chunk chunk in chunker.GetChunks())
{
using (IRandomAccessStream inputStream = await file.OpenAsync(FileAccessMode.Read))
{
using (var dataReader = new DataReader(inputStream.GetInputStreamAt(chunk.Start)))
{
await dataReader.LoadAsync(chunk.Length);
IBuffer buf = dataReader.ReadBuffer(chunk.Length);
IBuffer hashed = m_alg.HashData(buf);
hash_builder.Append(CryptographicBuffer.EncodeToHexString(hashed));
}
}
current_chunk++;
if (notifier != null)
{
float percent_done = current_chunk / num_chunks;
Action action = () => notifier(Path, percent_done * 100);
if (d == null)
{
action();
}
else
{
d.Execute(action);
}
}
}
m_hash = hash_builder.ToString();
if (hash_size > 32) //hash the hash
{
// Convert the string to UTF8 binary data.
IBuffer hashbuf = CryptographicBuffer.ConvertStringToBinary(m_hash, BinaryStringEncoding.Utf8);
IBuffer hashed = m_alg.HashData(hashbuf);
m_hash = CryptographicBuffer.EncodeToHexString(hashed);
}
if (notifier != null)
{
Action action = () => notifier(Path, 100);
if (d == null)
{
action();
}
else
{
d.Execute(action);
}
}
}
