void WriteChunkSignatures(Stream stream, ISignatureWriter signatureWriter)
{
var checksumAlgorithm = RollingChecksumAlgorithm;
var hashAlgorithm = HashAlgorithm;
ProgressReporter.ReportProgress("Building signatures", 0, stream.Length);
stream.Seek(0, SeekOrigin.Begin);
long start = 0;
int read;
var block = new byte[ChunkSize];
while ((read = stream.Read(block, 0, block.Length)) > 0)
{
signatureWriter.WriteChunk(new ChunkSignature
{
StartOffset = start,
Length = (short)read,
Hash = hashAlgorithm.ComputeHash(block, 0, read),
RollingChecksum = checksumAlgorithm.Calculate(block, 0, read)
});
start += read;
ProgressReporter.ReportProgress("Building signatures", start, stream.Length);
}
}
void WriteChunkSignatures(Stream stream, ISignatureWriter signatureWriter)
{
var checksumAlgorithm = RollingChecksumAlgorithm;
var hashAlgorithm = HashAlgorithm;
//ProgressReporter.ReportProgress("Building signatures", 0, stream.Length);
stream.Seek(0, SeekOrigin.Begin);
long start = 0;
int read;
var block = new byte[ChunkSize];
while ((read = stream.Read(block, 0, block.Length)) > 0)
{
signatureWriter.WriteChunk(new ChunkSignature
{
StartOffset = start,
Length = (short)read,
Hash = hashAlgorithm.ComputeHash(block, 0, read),
RollingChecksum = checksumAlgorithm.Calculate(block, 0, read)
});
start += read;
ProgressReporter.ReportProgress("Building signatures", start, stream.Length);
}
}
void WriteMetadata(Stream stream, ISignatureWriter signatureWriter)
{
ProgressReporter.ReportProgress("Hashing file", 0, stream.Length);
stream.Seek(0, SeekOrigin.Begin);
signatureWriter.WriteMetadata(HashAlgorithm, RollingChecksumAlgorithm);
ProgressReporter.ReportProgress("Hashing file", stream.Length, stream.Length);
}
void WriteMetadata(Stream stream, ISignatureWriter signatureWriter)
{
ProgressReporter.ReportProgress("Hashing file", 0, stream.Length);
stream.Seek(0, SeekOrigin.Begin);
var hash = HashAlgorithm.ComputeHash(stream);
signatureWriter.WriteMetadata(HashAlgorithm, RollingChecksumAlgorithm, hash);
ProgressReporter.ReportProgress("Hashing file", stream.Length, stream.Length);
}
public void Build(Stream stream, ISignatureWriter signatureWriter)
{
WriteMetadata(stream, signatureWriter);
WriteChunkSignatures(stream, signatureWriter);
}
public void Build(Stream stream, ISignatureWriter signatureWriter)
{
WriteMetadata(stream, signatureWriter);
WriteChunkSignatures(stream, signatureWriter);
}
void WriteMetadata(Stream stream, ISignatureWriter signatureWriter)
{
stream.Seek(0, SeekOrigin.Begin);
signatureWriter.WriteMetadata(ChunkSize, HashAlgorithm, RollingChecksumAlgorithm);
}
