//Appends the any xml file/folder nodes onto the folder
private void AddXmlNodes(FolderCompareObject folder, int numOfPaths, XmlDocument xmlDoc)
{
List<XMLCompareObject> xmlObjList = new List<XMLCompareObject>();
List<string> xmlFolderList = new List<string>();
for (int i = 0; i < numOfPaths; i++)
{
string path = Path.Combine(folder.GetSmartParentPath(i), folder.Name);
if (Directory.Exists(path))
{
DirectoryInfo dirInfo = new DirectoryInfo(path);
FileInfo[] fileList = dirInfo.GetFiles();
DirectoryInfo[] dirInfoList = dirInfo.GetDirectories();
string xmlPath = Path.Combine(path, CommonXMLConstants.MetadataPath);
if (!File.Exists(xmlPath))
continue;
CommonMethods.LoadXML(ref xmlDoc, xmlPath);
xmlObjList = GetAllFilesInXML(xmlDoc);
xmlFolderList = GetAllFoldersInXML(xmlDoc);
RemoveSimilarFiles(xmlObjList, fileList);
RemoveSimilarFolders(xmlFolderList, dirInfoList);
}
AddFileToChild(xmlObjList, folder, i, numOfPaths);
AddFolderToChild(xmlFolderList, folder, i, numOfPaths);
xmlObjList.Clear();
xmlFolderList.Clear();
}
}
/// <summary>
/// Visit implementaton for <see cref="FolderCompareObject"/>.
/// </summary>
/// <param name="folder">The <see cref="FolderCompareObject"/> to process.</param>
/// <param name="numOfPaths">The total number of folders to sync.</param>
public void Visit(FolderCompareObject folder, int numOfPaths)
{
_nodesCount++;
_syncProgress.Message = folder.Name;
if (folder.Invalid)
{
_syncProgress.Fail();
return;
}
int maxPriorityPos = folder.SourcePosition; // Get the position of the source file.
if (folder.Priority[maxPriorityPos] > 0)
{
switch (folder.ChangeType[maxPriorityPos])
{
case MetaChangeType.Delete:
DeleteFolder(folder, numOfPaths, maxPriorityPos);
break;
case MetaChangeType.New:
case MetaChangeType.NoChange:
CreateFolder(folder, numOfPaths, maxPriorityPos);
break;
case MetaChangeType.Rename:
MoveFolder(folder, numOfPaths, maxPriorityPos);
break;
}
}
_syncProgress.Complete();
}
/// <summary>
/// Visit <see cref="FolderCompareObject"/> implementation for BuilderVisitor.
/// </summary>
/// <param name="folder">The <see cref="FolderCompareObject"/> to build and process.</param>
/// <param name="numOfPaths">The total number of folders to keep in sync.</param>
public void Visit(FolderCompareObject folder, int numOfPaths)
{
try
{
RootCompareObject root = folder as RootCompareObject;
for (int index = 0; index < numOfPaths; index++)
{
string path = root == null ? Path.Combine(folder.GetSmartParentPath(index), folder.Name) : root.Paths[index];
DirectoryInfo f = new DirectoryInfo(path);
if (f.Exists)
{
if (_progress != null)
{
_progress.Message = f.FullName;
_progress.Update();
}
ProcessFolders(folder, numOfPaths, f, index);
ProcessFiles(folder, numOfPaths, f, index);
}
}
}
catch (UnauthorizedAccessException e)
{
ServiceLocator.GetLogger(ServiceLocator.DEBUG_LOG).Write(e);
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.UNKNOWN, "Error retrieving contents of folder due to unauthorized access."));
}
catch (PathTooLongException e)
{
ServiceLocator.GetLogger(ServiceLocator.DEBUG_LOG).Write(e);
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.UNKNOWN, "Error retrieving contents of folder due to path being too long."));
}
}
/// <summary>
/// Visit implementation for <see cref="FolderCompareObject"/>.
/// </summary>
/// <param name="folder">The <see cref="FolderCompareObject"/> to process.</param>
/// <param name="numOfPaths">The total number of folders to keep in sync.</param>
public void Visit(FolderCompareObject folder, int numOfPaths)
{
if (folder.Invalid)
return;
CompareFolders(folder, numOfPaths);
_totalNodes++;
}
private long[] _metaLastWriteTimeUtc; // Array to store the last write time of each file based on metadata.
/// <summary>
/// Initializes a <c>FileCompareObject</c> given the name of the file, the number of paths to synchronize, and the parent of this file.
/// </summary>
/// <param name="name">A <see cref="string"/> containing the name of this <c>FileCompareObject</c>.</param>
/// <param name="numOfPaths">An <see cref="int"/> containing the number of paths to synchronize.</param>
/// <param name="parent">The <see cref="FolderCompareObject"/> which is the parent of this <c>FileCompareObject</c>.</param>
public FileCompareObject(string name, int numOfPaths, FolderCompareObject parent)
: base(name, numOfPaths, parent)
{
_hash = new string[numOfPaths];
_length = new long[numOfPaths];
_lastWriteTimeUtc = new long[numOfPaths];
_metaHash = new string[numOfPaths];
_metaLength = new long[numOfPaths];
_metaLastWriteTimeUtc = new long[numOfPaths];
}
/// <summary>
/// Helper Method to traverse a FolderCompareObjects and all foldercompareobjects and filecompareobjects under it
/// </summary>
/// <param name="folder">FolderCompareObject to start the traversal</param>
/// <param name="numOfPaths">No. of paths available</param>
/// <param name="visitor">A particular visit to visit the RCOs. In this case, it will be the PreviewVisitor</param>
private static void TraverseFolderHelper(FolderCompareObject folder, int numOfPaths, IVisitor visitor)
{
visitor.Visit(folder, numOfPaths);
Dictionary<string, BaseCompareObject>.ValueCollection values = folder.Contents.Values;
FolderCompareObject fco;
foreach (BaseCompareObject o in values)
{
if ((fco = o as FolderCompareObject) != null)
TraverseFolderHelper(fco, numOfPaths, visitor);
else
visitor.Visit(o as FileCompareObject, numOfPaths);
}
}
// Detect folder renames, if any.
private void DetectFolderRename(FolderCompareObject folder, int numOfPaths)
{
List<int> deleteIndexes = new List<int>(); // Keeps a list of deleted indexes
List<int> unchangedIndexes = new List<int>(); // Keeps a list of unchanged indexes
for (int i = 0; i < numOfPaths; i++)
{
switch (folder.ChangeType[i])
{
case MetaChangeType.Delete:
deleteIndexes.Add(i);
break;
case MetaChangeType.NoChange:
unchangedIndexes.Add(i);
break;
}
}
// 1. If there exists a folder for which meta exists is true and exists is false, it is (aka changeType.delete)
// highly probable that it is a folder rename
// 2. We check all folders which has the same meta name but different name as the non-existent folder
// 3. If the count is 1, we shall proceed to rename
FolderCompareObject folderObject;
if (deleteIndexes.Count > 0)
{
int renameCount;
folderObject = folder.Parent.GetRenamedFolder(folder.Name, out renameCount);
if (renameCount > 1) // Multiple renames detected, set all unchanged to New so they will be propagated again
{
foreach (int j in unchangedIndexes)
folder.ChangeType[j] = MetaChangeType.New;
return; // Exit
}
if (folderObject != null) // If folderObject != null and we reach here implies renameCounter is 1.
{
for (int i = 0; i < numOfPaths; i++)
{
if (!folderObject.Exists[i]) // Remove all delete indexes if folder object does not exist at specified index
deleteIndexes.Remove(i); // so that only those that exist will be merged
}
MergeRenamedFolder(folder, folderObject, deleteIndexes);
}
}
}
private LastKnownState?[] _lastKnownState; // Stores the last known state, eg. delete, if the file system object is no longer found.
/// <summary>
/// Initializes a <c>BaseCompareObject</c> given the name, the number of paths to synchronize, and the parent of it.
/// </summary>
/// <param name="name">A <see cref="string"/> containing the name.</param>
/// <param name="numOfPaths">An <see cref="int"/> with the number of paths to synchronize.</param>
/// <param name="parent">A <see cref="FolderCompareObject"/> which is the parent of this object. It can be null, in the case where this object is a <see cref="RootCompareObject"/>.</param>
protected BaseCompareObject(string name, int numOfPaths, FolderCompareObject parent)
{
_name = name;
_creationTimeUtc = new long[numOfPaths];
_exists = new bool[numOfPaths];
_finalState = new FinalState?[numOfPaths];
_metaCreationTimeUtc = new long[numOfPaths];
_metaExists = new bool[numOfPaths];
_metaUpdated = new long[numOfPaths];
_changeType = new MetaChangeType?[numOfPaths];
_priority = new int[numOfPaths];
_parent = parent;
_invalid = false;
_lastKnownState = new LastKnownState?[numOfPaths];
}
/// <summary>
/// Visits each folder node and return them and it will update the values either through the meta data
/// or the last known state document
/// </summary>
/// <param name="folder"></param>
/// <param name="numOfPaths"></param>
public void Visit(FolderCompareObject folder, int numOfPaths)
{
XmlDocument xmlDoc = new XmlDocument();
PopulateFolderMetaName(folder, numOfPaths);
for (int i = 0; i < numOfPaths; i++)
{
string path = Path.Combine(folder.GetSmartParentPath(i), CommonXMLConstants.MetadataPath);
if (!File.Exists(path))
continue;
CommonMethods.LoadXML(ref xmlDoc, path);
folder = PopulateFolderWithMetaData(xmlDoc, folder, i);
}
AddXmlNodes(folder, numOfPaths, xmlDoc);
}
/// <summary>
/// It calls ProcessFolderFinalState method and if either needLastKnownState or the method is true,
/// it will call GenerateFolderLastKnownState method to write a last known state document
/// </summary>
/// <param name="folder"></param>
/// <param name="numOfPaths"></param>
public void Visit(FolderCompareObject folder, int numOfPaths)
{
if (folder.Invalid)
return;
bool needLastKnownState = false;
for (int i = 0; i < numOfPaths; i++)
{
_progress.Message = Path.Combine(folder.GetSmartParentPath(i), folder.Name);
needLastKnownState = ProcessFolderFinalState(folder, i) || needLastKnownState;
}
if (needLastKnownState)
GenerateFolderLastKnownState(folder, numOfPaths);
_progress.Complete();
}
private void MoveFolder(FolderCompareObject folder, int numOfPaths, int srcFolderPos)
{
bool changed = false;
for (int i = 0; i < numOfPaths; i++)
{
if (i != srcFolderPos && folder.Priority[i] != folder.Priority[srcFolderPos])
{
string oldFolderName = Path.Combine(folder.GetSmartParentPath(i), folder.Name);
string newFolderName = Path.Combine(folder.GetSmartParentPath(i), folder.NewName);
string srcFolderName = Path.Combine(folder.GetSmartParentPath(srcFolderPos), folder.NewName);
try
{
if (Directory.Exists(oldFolderName))
{
CommonMethods.MoveFolder(oldFolderName, newFolderName); // Rename the old folder to the new name if it exists.
folder.FinalState[i] = FinalState.Renamed;
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.FSCHANGE_RENAMED, "Folder renamed from " + oldFolderName + " to " + newFolderName));
}
else
{
CommonMethods.CopyDirectory(srcFolderName, newFolderName); // Copy the directory from the source folder if the old folder does not exist.
folder.Exists[i] = true;
folder.CreationTimeUtc[i] = Directory.GetCreationTimeUtc(newFolderName).Ticks;
folder.FinalState[i] = FinalState.CreatedRenamed;
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.FSCHANGE_CREATED, "Folder copied from " + srcFolderName + " to " + newFolderName));
}
changed = true;
}
catch (MoveFolderException)
{
folder.FinalState[i] = FinalState.Error;
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.FSCHANGE_ERROR, "Error renaming folder from " + oldFolderName + " to " + newFolderName));
}
catch (CopyFolderException)
{
folder.FinalState[i] = FinalState.Error;
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.FSCHANGE_ERROR, "Error copying folder: " + srcFolderName + " to " + newFolderName));
}
}
else
{
folder.FinalState[i] = FinalState.Renamed;
changed = true;
}
}
folder.FinalState[srcFolderPos] = changed ? FinalState.Renamed : FinalState.Unchanged; // If changed is true, that means at least one file has been affected, set the FinalState to renamed. Otherwise, leave it as Unchanged.
}
private void DeleteFolder(FolderCompareObject folder, int numOfPaths, int srcFolderPos)
{
bool changed = false;
for (int i = 0; i < numOfPaths; i++)
{
if (i != srcFolderPos && folder.Priority[i] != folder.Priority[srcFolderPos])
{
string destFolder = Path.Combine(folder.GetSmartParentPath(i), folder.Name);
try
{
if (_syncConfig.ArchiveLimit > 0)
{
CommonMethods.ArchiveFolder(destFolder, _syncConfig.ArchiveName, _syncConfig.ArchiveLimit);
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.FSCHANGE_ARCHIVED, "Folder archived " + destFolder));
}
}
catch (ArchiveFolderException)
{
folder.FinalState[i] = FinalState.Error;
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.FSCHANGE_ERROR, "Error archiving folder " + destFolder));
}
try
{
if (_syncConfig.Recycle)
CommonMethods.DeleteFolderToRecycleBin(destFolder);
else
CommonMethods.DeleteFolder(destFolder);
folder.Exists[i] = false;
folder.FinalState[i] = FinalState.Deleted;
changed = true; // Set it to true since the change has propaged to at least one folder
if (_syncConfig.Recycle)
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.FSCHANGE_DELETED, "Folder deleted to recycle bin " + destFolder));
else
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.FSCHANGE_DELETED, "Folder deleted " + destFolder));
}
catch (DeleteFolderException)
{
folder.FinalState[i] = FinalState.Error;
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.FSCHANGE_ERROR, "Error deleting folder " + destFolder));
}
}
else
{
folder.FinalState[i] = folder.MetaExists[i] ? FinalState.Deleted : FinalState.Unchanged;
changed = true; // Set it to true since the change has propaged to at least one folder
}
}
folder.FinalState[srcFolderPos] = changed ? FinalState.Deleted : FinalState.Unchanged; // Set the FinalState to deleted if changed is true, otherwise set it as Unchanged.
}
private void CreateFolder(FolderCompareObject folder, int numOfPaths, int srcFolderPos)
{
for (int i = 0; i < numOfPaths; i++)
{
if (i != srcFolderPos && folder.Priority[i] != folder.Priority[srcFolderPos])
{
string folderToCreate = Path.Combine(folder.GetSmartParentPath(i), folder.Name);
if (!Directory.Exists(folderToCreate))
{
try
{
CommonMethods.CreateFolder(folderToCreate); // Create the folder since it does not exist
folder.Exists[i] = true; // Update the state of the folder
folder.CreationTimeUtc[i] = Directory.GetCreationTimeUtc(folderToCreate).Ticks;
folder.FinalState[i] = FinalState.Created;
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.FSCHANGE_CREATED, "Folder created " + folderToCreate));
}
catch (CreateFolderException)
{
folder.FinalState[i] = FinalState.Error;
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.FSCHANGE_ERROR, "Error creating folder " + folderToCreate));
}
}
}
else
{
folder.FinalState[i] = folder.MetaExists[i] ? FinalState.Unchanged : FinalState.Created; // Set the FinalState to unchanged if the metadata already exists, else set it to created.
}
}
folder.FinalState[srcFolderPos] = folder.MetaExists[srcFolderPos] ? FinalState.Unchanged : FinalState.Created; // Set the FinalState to unchanged if the metadata exists, else set it to created.
}
// Based on the folder and counter , it will load the xml document and delete the folder node
private void DeleteFolderObject(FolderCompareObject folder, int counter)
{
XmlDocument xmlDoc = new XmlDocument();
string xmlPath = Path.Combine(folder.GetSmartParentPath(counter), CommonXMLConstants.MetadataPath);
if (File.Exists(xmlPath))
{
CommonMethods.LoadXML(ref xmlDoc, xmlPath);
XmlNode node = xmlDoc.SelectSingleNode(CommonXMLConstants.XPathExpr + CommonXMLConstants.XPathFolder + "[name=" + CommonMethods.ParseXPathString(folder.Name) + "]");
if (node == null)
return;
node.ParentNode.RemoveChild(node);
CommonMethods.SaveXML(ref xmlDoc, xmlPath);
}
}
// Populate the folder's meta name if it exists
private void PopulateFolderMetaName(FolderCompareObject folder, int numOfPaths)
{
for (int i = 0; i < numOfPaths; i++)
{
string currMetaData = Path.Combine(Path.Combine(folder.GetSmartParentPath(i), folder.Name), CommonXMLConstants.MetadataPath);
if (File.Exists(currMetaData))
{
XmlDocument xmlDoc = new XmlDocument();
CommonMethods.LoadXML(ref xmlDoc, currMetaData);
XmlNode xmlNode = xmlDoc.SelectSingleNode(CommonXMLConstants.XPathExpr + "/name");
if (xmlNode != null)
folder.MetaName = xmlNode.InnerText;
}
}
}
// For any folder name in the list , create them as a node and append them to the folder node
private void AddFolderToChild(List<string> folderName, FolderCompareObject folder, int counter, int length)
{
for (int i = 0; i < folderName.Count; i++)
{
BaseCompareObject o = folder.GetChild(folderName[i]);
FolderCompareObject fco;
if (o == null)
fco = new FolderCompareObject(folderName[i], length, folder);
else
fco = (FolderCompareObject)o;
fco.MetaExists[counter] = true;
if (o == null)
folder.AddChild(fco);
}
}
// Method will return any time the state of the sync progress becomes cancelled.
private static void TraverseFolderHelper(FolderCompareObject folder, int numOfPaths, IVisitor visitor, TraverseType type, Progress syncProgress)
{
if (syncProgress != null && syncProgress.State == SyncState.Cancelled)
return;
if (type == TraverseType.Pre)
visitor.Visit(folder, numOfPaths);
Dictionary<string, BaseCompareObject>.ValueCollection values = folder.Contents.Values;
foreach (BaseCompareObject o in values)
{
if (syncProgress != null && syncProgress.State == SyncState.Cancelled)
return;
FolderCompareObject fco;
if ((fco = o as FolderCompareObject) != null)
TraverseFolderHelper(fco, numOfPaths, visitor, type, syncProgress);
else
visitor.Visit(o as FileCompareObject, numOfPaths);
}
if (type == TraverseType.Post)
visitor.Visit(folder, numOfPaths);
}
// Checks if the last known state document exists and calls the AppendActionFolderLastKnownState method
private void GenerateFolderLastKnownState(FolderCompareObject folder, int numOfPaths)
{
for (int i = 0; i < numOfPaths; i++)
{
string parentPath = folder.GetSmartParentPath(i);
XmlDocument xmlTodoDoc = new XmlDocument();
string todoPath = Path.Combine(parentPath, CommonXMLConstants.LastKnownStatePath);
CommonMethods.CreateLastKnownStateFile(parentPath);
CommonMethods.LoadXML(ref xmlTodoDoc, todoPath);
CommonMethods.DoFolderLastKnownCleanUp(xmlTodoDoc, folder.Name);
AppendActionFolderLastKnownState(xmlTodoDoc, folder, CommonXMLConstants.ActionDeleted);
CommonMethods.SaveXML(ref xmlTodoDoc, todoPath);
}
}
// Deletes a folder node in the last known state file by searching for the name
private void DeleteFolderLastKnownState(FolderCompareObject folder, int counter)
{
string todoXMLPath = Path.Combine(folder.GetSmartParentPath(counter), CommonXMLConstants.LastKnownStatePath);
if (!File.Exists(todoXMLPath))
return;
XmlDocument todoXMLDoc = new XmlDocument();
CommonMethods.LoadXML(ref todoXMLDoc, todoXMLPath);
XmlNode folderNode = todoXMLDoc.SelectSingleNode(CommonXMLConstants.XPathLastKnownState + CommonXMLConstants.XPathFolder + "[name=" + CommonMethods.ParseXPathString(folder.Name) + "]");
if (folderNode != null)
folderNode.ParentNode.RemoveChild(folderNode);
CommonMethods.SaveXML(ref todoXMLDoc, todoXMLPath);
}
// Creates a folder node in the last known state file based on the values in FolderCompareObject
private void AppendActionFolderLastKnownState(XmlDocument xmlDoc, FolderCompareObject folder, string changeType)
{
string name = folder.MetaName ?? folder.Name;
XmlText nameText = xmlDoc.CreateTextNode(name);
XmlText action = xmlDoc.CreateTextNode(changeType);
XmlText lastUpdatedUtcText = xmlDoc.CreateTextNode(_dateTime.ToString());
XmlElement folderElement = xmlDoc.CreateElement(CommonXMLConstants.NodeFolder);
XmlElement nameElement = xmlDoc.CreateElement(CommonXMLConstants.NodeName);
XmlElement actionElement = xmlDoc.CreateElement(CommonXMLConstants.NodeAction);
XmlElement lastUpdatedElement = xmlDoc.CreateElement(CommonXMLConstants.NodeLastUpdatedUtc);
nameElement.AppendChild(nameText);
actionElement.AppendChild(action);
lastUpdatedElement.AppendChild(lastUpdatedUtcText);
folderElement.AppendChild(nameElement);
folderElement.AppendChild(actionElement);
folderElement.AppendChild(lastUpdatedElement);
XmlNode rootNode = xmlDoc.SelectSingleNode(CommonXMLConstants.XPathLastKnownState);
if(rootNode == null)
return;
rootNode.AppendChild(folderElement);
}
// Based on the folder and path , it will load the xml document in the sub folder and modify the name
private void ModifyFolderName(FolderCompareObject folder, string subFolderPath)
{
string name = folder.NewName ?? folder.Name;
string xmlPath = Path.Combine(Path.Combine(subFolderPath, name), CommonXMLConstants.MetadataPath);
XmlDocument subFolderDoc = new XmlDocument();
CommonMethods.LoadXML(ref subFolderDoc, xmlPath);
XmlNode xmlNameNode = subFolderDoc.SelectSingleNode(CommonXMLConstants.XPathExpr + CommonXMLConstants.XPathName);
if (xmlNameNode != null)
xmlNameNode.InnerText = name;
CommonMethods.SaveXML(ref subFolderDoc, xmlPath);
}
// Based on the final state of the folder , it will let the respective method handle it
private bool ProcessFolderFinalState(FolderCompareObject folder, int counter)
{
FinalState?[] finalStateList = folder.FinalState;
FinalState? changeType = finalStateList[counter];
bool needLastKnownState = false;
switch (changeType)
{
case FinalState.Created:
CreateFolderObject(folder, counter, false);
break;
case FinalState.Deleted:
DeleteFolderObject(folder, counter);
needLastKnownState = true;
break;
case FinalState.Renamed:
RenameFolderObject(folder, counter);
needLastKnownState = true;
break;
case FinalState.CreatedRenamed:
CreateFolderObject(folder, counter, true);
DeleteFolderObject(folder, counter);
needLastKnownState = true;
break;
}
return needLastKnownState;
}
// For any XMLCompareObjects in the list , create them as a node and append them to the folder node
private void AddFileToChild(List<XMLCompareObject> xmlFileList, FolderCompareObject folder, int counter, int length)
{
for (int i = 0; i < xmlFileList.Count; i++)
{
BaseCompareObject o = folder.GetChild(xmlFileList[i].Name);
FileCompareObject fco;
if (o == null)
fco = new FileCompareObject(xmlFileList[i].Name, length, folder);
else
fco = (FileCompareObject)o;
fco.MetaCreationTimeUtc[counter] = xmlFileList[i].CreatedTimeUtc;
fco.MetaHash[counter] = xmlFileList[i].Hash;
fco.MetaLastWriteTimeUtc[counter] = xmlFileList[i].LastModifiedTimeUtc;
fco.MetaLength[counter] = xmlFileList[i].Size;
fco.MetaUpdated[counter] = xmlFileList[i].LastUpdatedTimeUtc;
fco.MetaExists[counter] = true;
if (o == null)
folder.AddChild(fco);
}
}
/// <summary>
/// Processes and adds files to the tree.
/// </summary>
/// <param name="folder"><see cref="FolderCompareObject"/> to process and add files to.</param>
/// <param name="numOfPaths">The total number of sync folders.</param>
/// <param name="f">The <see cref="DirectoryInfo"/> to process and get files from.</param>
/// <param name="index">The index indicating which sync folder it belongs to.</param>
private void ProcessFiles(FolderCompareObject folder, int numOfPaths, DirectoryInfo f, int index)
{
try
{
FileInfo[] fileInfos = f.GetFiles();
foreach (FileInfo info in fileInfos)
{
if (_filterChain.ApplyFilter(_filter, info.FullName))
{
if (_progress != null)
{
_progress.Message = info.FullName;
_progress.Update();
}
BaseCompareObject o = folder.GetChild(info.Name); // Gets a child with the same name.
FileCompareObject fco = null;
bool conflict = false;
if (o == null) // If o is null, create a new file compare object
fco = new FileCompareObject(info.Name, numOfPaths, folder);
else
{
try
{
fco = (FileCompareObject)o; // Case o to a FileCompareObject is o is not null
}
catch (InvalidCastException)
// If invalid cast, it means there is a FolderCompareObject with the exact same name.
{
_typeConflicts.Add(info.FullName); // Add to to conflicts
conflict = true;
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(
new LogData(LogEventType.FSCHANGE_CONFLICT,
"Conflicted file detected " + info.FullName));
}
}
if (!conflict)
{
fco.CreationTimeUtc[index] = info.CreationTimeUtc.Ticks;
fco.LastWriteTimeUtc[index] = info.LastWriteTimeUtc.Ticks;
fco.Length[index] = info.Length;
fco.Exists[index] = true;
if (o == null)
folder.AddChild(fco); // Add the newly created FileCompareObject to this current folder
}
}
}
}
catch (UnauthorizedAccessException e)
{
ServiceLocator.GetLogger(ServiceLocator.DEBUG_LOG).Write(e);
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.UNKNOWN, "Error retrieving contents of folder due to unauthorized access."));
}
catch (DirectoryNotFoundException e)
{
ServiceLocator.GetLogger(ServiceLocator.DEBUG_LOG).Write(e);
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.UNKNOWN, "Error retrieving contents of folder due to directory not being found."));
}
}
// For each list of folder names , create a node and append them to the root node
private void AddFolderToRoot(List<string> folderName, RootCompareObject root, int counter, int length)
{
if (folderName.Count == 0)
return;
for (int i = 0; i < folderName.Count; i++)
{
BaseCompareObject o = root.GetChild(folderName[i]);
FolderCompareObject fco;
if (o == null)
fco = new FolderCompareObject(folderName[i], length, root);
else
fco = (FolderCompareObject)o;
fco.MetaExists[counter] = true;
if (o == null)
root.AddChild(fco);
}
}
/// <summary>
/// Processes and adds folders to the tree.
/// </summary>
/// <param name="folder"><see cref="FolderCompareObject"/> to process and add folders to.</param>
/// <param name="numOfPaths">The total number of sync folders.</param>
/// <param name="f">The <see cref="DirectoryInfo"/> to process and get folders from.</param>
/// <param name="index">The index indicating which sync folder it belongs to.</param>
private void ProcessFolders(FolderCompareObject folder, int numOfPaths, DirectoryInfo f, int index)
{
try
{
DirectoryInfo[] infos = f.GetDirectories();
foreach (DirectoryInfo info in infos)
{
if (_filterChain.ApplyFilter(_filter, info.FullName))
{
if (_progress != null)
{
_progress.Message = info.FullName;
_progress.Update();
}
BaseCompareObject o = folder.GetChild(info.Name); // Gets a child with the same name.
FolderCompareObject fco;
bool conflict = false;
if (o == null) // If o is null, create a new folder compare object.
fco = new FolderCompareObject(info.Name, numOfPaths, folder);
// Create a new folder compare object
else
{
try
{
fco = (FolderCompareObject)o; // Cast o to a FolderCompareObject.
}
catch (InvalidCastException) // Happens when a file has the same name as the folder.
{
for (int i = 0; i < numOfPaths; i++)
{
if (o.Exists[i])
_typeConflicts.Add(Path.Combine(o.GetSmartParentPath(i), o.Name));
}
folder.RemoveChild(info.Name); //Remove file object
fco = new FolderCompareObject(info.Name, numOfPaths, folder);
// Create a new folder compare object
conflict = true;
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(
new LogData(LogEventType.FSCHANGE_CONFLICT,
"Conflicted file detected " + info.FullName));
}
}
fco.CreationTimeUtc[index] = info.CreationTimeUtc.Ticks;
fco.Exists[index] = true;
if (o == null || conflict)
folder.AddChild(fco); // Add the newly created FolderCompareObject to this current folder
}
}
}
catch (UnauthorizedAccessException e)
{
ServiceLocator.GetLogger(ServiceLocator.DEBUG_LOG).Write(e);
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.UNKNOWN, "Error retrieving contents of folder due to unauthorized access."));
}
catch (DirectoryNotFoundException e)
{
ServiceLocator.GetLogger(ServiceLocator.DEBUG_LOG).Write(e);
ServiceLocator.GetLogger(ServiceLocator.USER_LOG).Write(new LogData(LogEventType.UNKNOWN, "Error retrieving contents of folder due to directory not being found."));
}
}
// Checks the meta data by the folder name , if it exists , set it MetaExists to true.
// If not , look up the last known state and populate the values from that document
private FolderCompareObject PopulateFolderWithMetaData(XmlDocument xmlDoc, FolderCompareObject folder, int counter)
{
XmlNode node = xmlDoc.SelectSingleNode(CommonXMLConstants.XPathExpr + CommonXMLConstants.XPathFolder + "[name=" + CommonMethods.ParseXPathString(folder.Name) + "]");
if (node != null)
{
folder.MetaExists[counter] = true;
}
else
{
string path = Path.Combine(folder.GetSmartParentPath(counter), CommonXMLConstants.LastKnownStatePath);
if (File.Exists(path))
{
XmlDocument lastKnownXmlDoc = new XmlDocument();
CommonMethods.LoadXML(ref lastKnownXmlDoc, path);
XmlNode folderNode = lastKnownXmlDoc.SelectSingleNode(CommonXMLConstants.XPathLastKnownState + CommonXMLConstants.XPathFolder + "[name=" + CommonMethods.ParseXPathString(folder.Name) + "]");
if (folderNode != null)
{
XmlNodeList nodeList = folderNode.ChildNodes;
for (int i = 0; i < nodeList.Count; i++)
{
XmlNode childNode = nodeList[i];
switch (childNode.Name)
{
case CommonXMLConstants.NodeAction:
string action = childNode.InnerText;
if (action.Equals("deleted"))
folder.LastKnownState[counter] = LastKnownState.Deleted;
else
folder.LastKnownState[counter] = LastKnownState.Renamed;
break;
case CommonXMLConstants.NodeLastUpdatedUtc:
folder.MetaUpdated[counter] = long.Parse(childNode.InnerText);
break;
}
}
}
}
}
return folder;
}
// Based on the folder and counter , it will create a folder node in the meta data
private void CreateFolderObject(FolderCompareObject folder, int counter, bool useNewName)
{
string name = useNewName ? folder.NewName : folder.Name;
XmlDocument xmlDoc = new XmlDocument();
string xmlPath = Path.Combine(folder.GetSmartParentPath(counter), CommonXMLConstants.MetadataPath);
CommonMethods.CreateFileIfNotExist(folder.GetSmartParentPath(counter));
CommonMethods.LoadXML(ref xmlDoc, xmlPath);
CommonMethods.DoFolderCleanUp(xmlDoc, name);
XmlText nameText = xmlDoc.CreateTextNode(name);
XmlText lastUpdatedUtcText = xmlDoc.CreateTextNode(_dateTime.ToString());
XmlElement nameElement = xmlDoc.CreateElement(CommonXMLConstants.NodeName);
XmlElement lastUpdatedElement = xmlDoc.CreateElement(CommonXMLConstants.NodeLastUpdatedUtc);
XmlElement folderElement = xmlDoc.CreateElement(CommonXMLConstants.NodeFolder);
nameElement.AppendChild(nameText);
lastUpdatedElement.AppendChild(lastUpdatedUtcText);
folderElement.AppendChild(nameElement);
folderElement.AppendChild(lastUpdatedElement);
XmlNode node = xmlDoc.SelectSingleNode(CommonXMLConstants.XPathExpr);
if (node == null)
return;
node.AppendChild(folderElement);
string subFolderXML = Path.Combine(folder.GetSmartParentPath(counter), name);
CommonMethods.CreateFileIfNotExist(subFolderXML);
CommonMethods.SaveXML(ref xmlDoc, xmlPath);
ModifyFolderName(folder, folder.GetSmartParentPath(counter));
DeleteFolderLastKnownState(folder, counter);
}
private string _metaName; // The name of the folder based on the metadata.
/// <summary>
/// Initializes a <c>FolderCompareObject</c> given the name of the file, the number of paths to synchronize, and the parent of this file.
/// </summary>
/// <param name="name">A <see cref="string"/> containing the name of this <c>FolderCompareObject</c>.</param>
/// <param name="numOfPaths">An <see cref="int"/> containing the number of paths to synchronize.</param>
/// <param name="parent">The <see cref="FolderCompareObject"/> which is the parent of this <c>FolderCompareObject</c>.</param>
public FolderCompareObject(string name, int numOfPaths, FolderCompareObject parent)
: base(name, numOfPaths, parent)
{
_contents = new Dictionary<string, BaseCompareObject>(StringComparer.OrdinalIgnoreCase);
}
// Based on the folder and counter , it will load the xml document and rename it
private void RenameFolderObject(FolderCompareObject folder, int counter)
{
if (Directory.Exists(Path.Combine(folder.GetSmartParentPath(counter), folder.Name)))
{
XmlDocument xmlDoc = new XmlDocument();
string xmlPath = Path.Combine(folder.GetSmartParentPath(counter), CommonXMLConstants.MetadataPath);
CommonMethods.LoadXML(ref xmlDoc, xmlPath);
XmlNode node = xmlDoc.SelectSingleNode(CommonXMLConstants.XPathExpr + CommonXMLConstants.XPathFolder + "[name=" + CommonMethods.ParseXPathString(folder.Name) + "]");
if (node == null)
{
CreateFolderObject(folder, counter, true);
return;
}
node.FirstChild.InnerText = folder.NewName;
node.LastChild.InnerText = _dateTime.ToString();
CommonMethods.SaveXML(ref xmlDoc, xmlPath);
}
else
{
XmlDocument newXmlDoc = new XmlDocument();
string editOldXML = Path.Combine(Path.Combine(folder.GetSmartParentPath(counter), folder.NewName), CommonXMLConstants.MetadataPath);
CommonMethods.CreateFileIfNotExist(Path.Combine(folder.GetSmartParentPath(counter), folder.NewName));
CommonMethods.LoadXML(ref newXmlDoc, editOldXML);
XmlNode xmlNameNode = newXmlDoc.SelectSingleNode(CommonXMLConstants.XPathExpr + CommonXMLConstants.XPathName);
if (xmlNameNode != null)
xmlNameNode.InnerText = folder.NewName;
CommonMethods.SaveXML(ref newXmlDoc, editOldXML);
string parentXML = Path.Combine(folder.GetSmartParentPath(counter), CommonXMLConstants.MetadataPath);
XmlDocument parentXmlDoc = new XmlDocument();
CommonMethods.CreateFileIfNotExist(folder.GetSmartParentPath(counter));
CommonMethods.LoadXML(ref parentXmlDoc, parentXML);
XmlNode parentXmlFolderNode = parentXmlDoc.SelectSingleNode(CommonXMLConstants.XPathExpr + CommonXMLConstants.XPathFolder + "[name=" + CommonMethods.ParseXPathString(folder.Name) + "]");
if (parentXmlFolderNode != null)
{
parentXmlFolderNode.FirstChild.InnerText = folder.NewName;
parentXmlFolderNode.LastChild.InnerText = _dateTime.ToString();
}
CommonMethods.SaveXML(ref parentXmlDoc, Path.Combine(folder.GetSmartParentPath(counter), CommonXMLConstants.MetadataPath));
}
}
