int System.Collections.IComparer.Compare(object object1, object object2)
{
ExtendedFileInfo efi1 = (ExtendedFileInfo)object1;
ExtendedFileInfo efi2 = (ExtendedFileInfo)object2;
return((int)string.Compare(efi1.fileInfo.Name, efi2.fileInfo.Name));
}
/// <summary>
/// Determine the larger of two files
/// </summary>
/// <param name="fi1"></param>
/// <param name="fi2"></param>
/// <returns></returns>
int System.Collections.IComparer.Compare(object object1, object object2)
{
ExtendedFileInfo fi1 = (ExtendedFileInfo)object1;
ExtendedFileInfo fi2 = (ExtendedFileInfo)object2;
return((int)(fi1.fileInfo.Length - fi2.fileInfo.Length));
}
/// <summary>
/// Retuern true if first 1024 bytes are equal.
/// </summary>
private bool fastCheсk(ExtendedFileInfo efi1, ExtendedFileInfo efi2)
{
/*byte[] b1 = new byte[chunkSize];
* byte[] b2 = new byte[chunkSize];*/
if (efi1.Chunk == null)
{
efi1.Chunk = new byte[chunkSize];
int b1Read;
using (FileStream file1 = File.OpenRead(efi1.fileInfo.FullName))
{
b1Read = file1.Read(efi1.Chunk, 0, efi1.Chunk.Length);
}
if (b1Read < chunkSize)
{
new CrashReport("SortByChecksum.fastCheсk() b1Read < chunkSize!");
}
}
if (efi2.Chunk == null)
{
efi2.Chunk = new byte[chunkSize];
int b2Read;
using (FileStream file2 = File.OpenRead(efi2.fileInfo.FullName))
{
b2Read = file2.Read(efi2.Chunk, 0, efi2.Chunk.Length);
}
if (b2Read < chunkSize)
{
new CrashReport("SortByChecksum.fastCheсk() b2Read < chunkSize!");
}
}
return(BlockCompare(efi1.Chunk, efi2.Chunk, 0, chunkSize));
/*int b1Read;
* int b2Read;
* using (FileStream file1 = File.OpenRead(efi1.fileInfo.FullName),
* file2 = File.OpenRead(efi2.fileInfo.FullName))
* {
* b1Read = file1.Read(efi1.Chunk, 0, efi1.Chunk.Length);
* b2Read = file2.Read(efi2.Chunk, 0, efi2.Chunk.Length);
* }
* bool result = BlockCompare(efi1.Chunk, efi2.Chunk, 0, Math.Min(b1Read, b2Read));
* return result;*/
}
/// <summary>
/// Determine the larger of two files
/// </summary>
/// <param name="fi1"></param>
/// <param name="fi2"></param>
/// <returns></returns>
int System.Collections.IComparer.Compare(object object1, object object2)
{
ExtendedFileInfo efi1 = (ExtendedFileInfo)object1;
ExtendedFileInfo efi2 = (ExtendedFileInfo)object2;
if (FastCheck && (efi1.fileInfo.Length >= FastCheckFileSize))
{
if (fastCheсk(efi1, efi2))
{
return((int)string.Compare(efi1.CheckSum, efi2.CheckSum));
}
else
{
return(0);
}
}
else
{
return((int)string.Compare(efi1.CheckSum, efi2.CheckSum));
}
//return (int)string.Compare(efi1.CheckSum, efi2.CheckSum);
}