private void BuildFirstClusterIndex()
{
if (_firstClusterIndex == null)
{
// Iterate over all files on the drive and record their first cluster.
// Newer files overwrite older files.
_firstClusterIndex = new Dictionary <long, IFATNode>();
SearchByTree(new NodeVisitCallback(delegate(INodeMetadata metadata, ulong progress, ulong total) {
// Handle files
FileFAT file = metadata as FileFAT;
if (file != null)
{
if (!_firstClusterIndex.ContainsKey(file.FirstCluster) ||
_firstClusterIndex[file.FirstCluster].LastModified < file.LastModified)
{
_firstClusterIndex[file.FirstCluster] = file;
}
}
// Handle folders
FolderFAT folder = metadata as FolderFAT;
if (folder != null)
{
if (!_firstClusterIndex.ContainsKey(folder.FirstCluster) ||
_firstClusterIndex[folder.FirstCluster].LastModified < folder.LastModified)
{
_firstClusterIndex[folder.FirstCluster] = folder;
}
}
return(true);
}), null);
}
}
public FileFAT(FileSystemFAT fileSystem, FolderFAT.DirectoryEntry entry, string path) {
FileSystem = fileSystem;
Name = PathUtils.MakeFileNameValid(entry.FileName);
Path = PathUtils.Combine(path, Name);
_length = entry.Length;
Attributes = new FileAttributesFAT(entry);
FirstCluster = entry.ClusterNum;
Deleted = Attributes.Deleted;
}
public FileAttributesFAT(FolderFAT.DirectoryEntry entry) {
Name = entry.FileName;
Size = (ulong)entry.Length;
Deleted = entry.Free;
Hidden = (entry.Attributes & FATDirectoryAttributes.ATTR_HIDDEN) != 0;
System = (entry.Attributes & FATDirectoryAttributes.ATTR_SYSTEM) != 0;
Archive = (entry.Attributes & FATDirectoryAttributes.ATTR_ARCHIVE) != 0;
ReadOnly = (entry.Attributes & FATDirectoryAttributes.ATTR_READ_ONLY) != 0;
Created = entry.CreationTime;
LastModified = entry.LastWrite;
LastAccessed = entry.LastAccess;
}
