private static bool CompareSmallFiles(string filePath1, string filePath2)
{
byte[] originalFileContent = File.ReadAllBytes(filePath1);
byte[] backupFileContent = File.ReadAllBytes(filePath2);
return(ByteUtilities.CompareEffectively(originalFileContent, backupFileContent));
}
private static bool CompareLargeFiles(FileInfo file1, FileInfo file2)
{
long fileLength = file1.Length;
const int size = 0x1000000;
bool success = true;
Parallel.For(0, fileLength / size, x =>
{
var start = (int)x * size;
if (start >= fileLength)
{
return;
}
using (FileStream fileStream1 = File.OpenRead(file1.FullName))
{
using (FileStream fileStream2 = File.OpenRead(file2.FullName))
{
var buffer = new byte[size];
var buffer2 = new byte[size];
fileStream1.Position = start;
fileStream2.Position = start;
int count = fileStream1.Read(buffer, 0, size);
fileStream2.Read(buffer2, 0, size);
if (!ByteUtilities.CompareEffectively(buffer, buffer2))
{
success = false;
return;
}
//for (int i = 0; i < count; i++)
//{
// if (buffer[i] != buffer2[i])
// {
// success = false;
// return;
// }
//}
}
}
});
return(success);
}