private bool CalculateFileHash(QueueItem item, BackgroundWorker bw)
{
if (item == null)
throw new ArgumentNullException("item");
if (item.File.Exists)
{
string FileHash = String.Empty;
if (item.Type == HashType.CRC)
{
uint crc;
try
{
crc = Crc32.GetFileCRC32(item.File.FullName, ref _BytesProcessed, bw);
}
catch (Exception ex)
{
item.SetResultStatus(QueueItemResult.FileAccessViolation);
return false;
}
FileHash = StringUtilities.UInt32ToHex(crc);
}
else if (item.Type == HashType.MD5)
{
byte[] md5;
try
{
md5 = Md5.GetFileMD5(item.File.FullName, ref _BytesProcessed, bw);
}
catch (Exception ex)
{
item.SetResultStatus(QueueItemResult.FileAccessViolation);
return false;
}
FileHash = StringUtilities.ByteArrayToHex(md5);
}
item.SetFileHash(FileHash);
return true;
}
else
{
item.SetResultStatus(QueueItemResult.FileNotFound);
}
return false;
}
private bool AppendHashToFileName(QueueItem item)
{
if (item.File.Exists)
{
// Determine which QueueItem hash value is avaliable
string FileHash;
if (!String.IsNullOrEmpty(item.FileHash))
{
FileHash = item.FileHash;
}
else if (!String.IsNullOrEmpty(item.TestHash))
{
FileHash = item.TestHash;
}
else
{
// This would be pretty pointless if we didnt have a hash to append
item.SetResultStatus(QueueItemResult.HashAppendFailed);
return false;
}
// Generate the new file name
string NewFileName;
if (item.File.Name.IndexOf('.') > -1)
{
NewFileName = item.File.Name.Substring(0, item.File.Name.LastIndexOf('.')) + " [" + FileHash + "]" + item.File.Extension;
}
else
{
NewFileName = item.File.Name + "[" + FileHash + "]";
}
// Rename the file, catching common exceptions
try
{
item.File.MoveTo(Path.Combine(item.File.DirectoryName, NewFileName));
}
catch (FileLoadException)
{
item.SetResultStatus(QueueItemResult.FileAccessViolation);
return false;
}
catch (Exception ex)
{
item.SetResultStatus(QueueItemResult.HashAppendFailed);
return false;
}
}
else
{
// File didnt exist
item.SetResultStatus(QueueItemResult.FileNotFound);
return false;
}
// Success
item.SetResultStatus(QueueItemResult.HashAppended);
return true;
}