public static void Copy(string pathSrc, string pathDst, out long length, out string hash)
{
try
{
length = 0;
using (var streamSource = File.Open(pathSrc, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
using (var streamDestination = File.OpenWrite(pathDst))
using (var hashAlg = new Hash())
{
var bufferRead = buffers[0];
var bufferWrite = buffers[1];
var len = 0;
do
{
var taskWrite = streamDestination.WriteAsync(bufferWrite, 0, len);
var taskRead = streamSource.ReadAsync(bufferRead, 0, Const.BufferSize);
hashAlg.Calculate(bufferWrite, len);
length += len;
taskWrite.Wait();
len = taskRead.Result;
var bufferTemp = bufferWrite;
bufferWrite = bufferRead;
bufferRead = bufferTemp;
} while (len != 0);
hash = hashAlg.Get();
}
}
catch (Exception e)
{
throw new Exception(string.Format(CultureInfo.InvariantCulture, "Content.Copy ({0}, {1})", pathSrc, pathDst), e);
}
}
/// <summary>
/// Compare the specified files pathA and pathB. If files are equal it returns also file length and hashB.
/// </summary>
/// <param name="pathA">Path a.</param>
/// <param name="pathB">Path b.</param>
/// <param name="length">Length.</param>
/// <param name="hashB">Hash b.</param>
/// <returns>True if files are equal.</returns>
public static bool Compare(string pathA, string pathB, out long length, out string hashB)
{
try
{
hashB = null;
length = 0;
if (new FileInfo(pathA).Length != new FileInfo(pathB).Length)
return false;
using (var streamA = File.Open(pathA, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
using (var streamB = File.Open(pathB, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
using (var hashAlgB = new Hash())
{
var bufferReadA = buffers[0];
var bufferReadB = buffers[1];
var bufferCompA = buffers[2];
var bufferCompB = buffers[3];
var len = 0;
do
{
var readATask = streamA.ReadAsync(bufferReadA, 0, Const.BufferSize);
var readBTask = streamB.ReadAsync(bufferReadB, 0, Const.BufferSize);
for (var i = 0; i < len; ++i)
if (bufferCompA[i] != bufferCompB[i])
return false;
hashAlgB.Calculate(bufferCompB, len);
len = readATask.Result;
if (len != readBTask.Result)
return false;
length += len;
var bufferTemp = bufferCompA;
bufferCompA = bufferReadA;
bufferReadA = bufferTemp;
bufferTemp = bufferCompB;
bufferCompB = bufferReadB;
bufferReadB = bufferTemp;
} while (len != 0);
hashB = hashAlgB.Get();
}
return true;
}
catch (Exception e)
{
throw new Exception(string.Format(CultureInfo.InvariantCulture, "Content.Compare ({0}, {1})", pathA, pathB), e);
}
}
