private void GroupEqualFileInfosAtTop(int start, int length, IFileInfoEqualityComparer fileInfoComparer)
{
for (var i = 0; i < length;)
{
var equalFiles = 1;
for (var j = i + 1; j < length; j++)
{
var f1 = _files[start + i];
var f2 = _files[start + j];
if (fileInfoComparer.Equals(f1, f2))
{
equalFiles++;
_files.Swap(start + i, start + j);
}
}
if (equalFiles > 1)
{
OnDuplicateFound(start + i, equalFiles);
}
i += equalFiles;
}
}
private void FindDuplicates(int start, int length, IFileInfoEqualityComparer fileInfoComparer)
{
try
{
if (length == 2)
{
if (fileInfoComparer.Equals(_files[start], _files[start + 1]))
{
OnDuplicateFound(start, length);
}
}
else
{
if (fileInfoComparer is IFileEqualityComprarer fileComparer)
{
new MultiFileEqualityComparer(this, start, length, fileComparer).FindDuplicates();
}
else
{
GroupEqualFileInfosAtTop(start, length, fileInfoComparer);
}
}
}
catch (FileSystemInfoException ex)
{
OnError(ex);
}
}
private void CompareFileSystenInfo(FileSystemInfo srcFsi, FileSystemInfo dstFsi, IFileInfoEqualityComparer fileInfoComparer)
{
if (srcFsi is FileInfo srcFile)
{
if (dstFsi is FileInfo dstFile)
{
try
{
if (!fileInfoComparer.Equals(srcFile, dstFile))
{
OnOperationFound(new EditFileOperation(srcFile, dstFile));
}
else if (!AttributesEqual(srcFile.Attributes, dstFile.Attributes))
{
OnOperationFound(new EditAttributesOperation(dstFile, srcFile.Attributes));
}
}
catch (FileSystemInfoException ex)
{
OnError(ex);
}
}
else if (dstFsi is DirectoryInfo dstDir)
{
_deleter.DeleteDirectory(dstDir);
OnOperationFound(new CopyFileOperation(srcFile, new FileInfo(dstFsi.FullName)));
}
}
else if (srcFsi is DirectoryInfo srcDir)
{
if (dstFsi is FileInfo dstFile)
{
OnOperationFound(new DeleteFileOperation(dstFile));
_copier.CopyDirectory(srcDir, new DirectoryInfo(dstFsi.FullName));
}
else if (dstFsi is DirectoryInfo dstDir)
{
_stack.Add(srcDir);
_stack.Add(dstDir);
}
}
}