/// <summary>
/// Folders Comparison of Comparator
/// </summary>
/// <param name="result"></param>
/// <param name="resultAlbum"></param>
/// <param name="recursive"></param>
/// <param name="sourceAlbum"></param>
/// <param name="targetAlbum"></param>
private void compareFolders(SyncResult result, Album[] resultAlbum, Stack<CompareStackContent> recursive, Album sourceAlbum, Album targetAlbum)
{
try
{
/* Get the Necessary Metadata and Folder Info */
List<string> sourceSubFolders = getSubFoldersFromPath(sourceAlbum.getPath());
List<string> targetSubFolders = getSubFoldersFromPath(targetAlbum.getPath());
List<Album> sourceSubAlbums = sourceAlbum.getSubAlbum();
List<Album> targetSubAlbums = targetAlbum.getSubAlbum();
/* Merge into a Single List */
List<string> allSubFolders = mergeLists(sourceAlbum.getPath(), targetAlbum.getPath(),
sourceSubFolders, targetSubFolders,
sourceSubAlbums, targetSubAlbums);
Album newSource, newTarget;
foreach (string subName in allSubFolders)
{
bool SF = isFileExist(subName, sourceSubFolders);
bool TF = isFileExist(subName, targetSubFolders);
bool SA = isFileExist(subName, sourceSubAlbums);
bool TA = isFileExist(subName, targetSubAlbums);
if (SF && SA && TF && TA) // 1111 = 15
{
// ALL EXIST: Recursion
// Get the New Source and Target Album
newSource = getSubAlbum(subName, sourceAlbum);
newTarget = getSubAlbum(subName, targetAlbum);
// Recursion = Push into Stack
CompareStackContent tempStackContent = new CompareStackContent();
tempStackContent.source = newSource;
tempStackContent.target = newTarget;
recursive.Push(tempStackContent);
continue;
}
else if (SF && SA && !TF && TA) // 1101 = 13
{
// TARGET DELETED: Delete Source
newSource = getSubAlbum(subName, sourceAlbum);
targetAlbum.trim(Album.combinePath(targetAlbum.getPath(), subName), Album.TRIM_ALBUM);
resultAlbum[SOURCE_DELETE].add(newSource);
continue;
}
else if (SF && !SA && TF && !TA) // 1010 = 10
{
// CREATE ALBUM METADATA: Recursion
newSource = new Album(Album.combinePath(sourceAlbum.getPath(), subName));
newTarget = new Album(Album.combinePath(targetAlbum.getPath(), subName));
// ADD TO ALBUM
sourceAlbum.add(newSource);
targetAlbum.add(newTarget);
// Recursion = Push into Stack
CompareStackContent tempStackContent = new CompareStackContent();
tempStackContent.source = newSource;
tempStackContent.target = newTarget;
recursive.Push(tempStackContent);
continue;
}
else if (SF && !SA && !TF && !TA) // 1000 = 8
{
try
{
// NEW JOB: Move Source
// POPULATE SA
populate(sourceAlbum, Album.combinePath(sourceAlbum.getPath(), subName));
// COPY ALBUM SA -> TA
populate(targetAlbum, Album.combinePath(targetAlbum.getPath(), subName), sourceAlbum);
newSource = getSubAlbum(subName, sourceAlbum);
resultAlbum[SOURCE_LATEST].add(newSource);
}
catch (UnauthorizedAccessException uae)
{
// IGNORE:
}
continue;
}
else if (!SF && SA && TF && TA) // 0111 = 7
{
// DELETE TF
newTarget = getSubAlbum(subName, targetAlbum);
sourceAlbum.trim(Album.combinePath(sourceAlbum.getPath(), subName), Album.TRIM_ALBUM);
resultAlbum[TARGET_DELETE].add(newTarget);
continue;
}
else if (!SF && SA && !TF && TA) // 0101 = 5
{
// ERASE ALBUM DATA
sourceAlbum.trim(Album.combinePath(sourceAlbum.getPath(), subName), Album.TRIM_ALBUM);
targetAlbum.trim(Album.combinePath(targetAlbum.getPath(), subName), Album.TRIM_ALBUM);
continue;
}
else if (!SF && !SA && TF && !TA) // 0010 = 2
{
try
{
// NEW JOB: Move Target
// POPULATE TA
populate(targetAlbum, Album.combinePath(targetAlbum.getPath(), subName));
// COPY ALBUM TA -> SA
populate(sourceAlbum, Album.combinePath(sourceAlbum.getPath(), subName), targetAlbum);
newTarget = getSubAlbum(subName, targetAlbum);
resultAlbum[TARGET_LATEST].add(newTarget);
}
catch (UnauthorizedAccessException uae)
{
// IGNORE:
}
continue;
}
else // 0000 = 0
{
throw new Exception(INVALID_ALBUM);
}
}
}
catch (UnauthorizedAccessException uae)
{
result.uaeThrown();
}
}
/// <summary>
/// Public compare function:
/// Compare source album with target album and return the difference in an album array
/// containing information about the difference of the two albums.
/// </summary>
/// <param name="sourceAlbum">Source album to be compared (cannot be null).</param>
/// <param name="targetAlbum">Target album to be compared (cannot be null).</param>
/// <returns>
/// Album array containing the difference between the two albums:
/// array[0] contains newer files in source album.
/// array[1] contains newer files in target album.
/// array[2] contains conflict files in source album.
/// array[3] contains conflict files in target album.
/// array[4] contains deleted files in source album.
/// array[5] contains deleted files in target album.
/// </returns>
public SyncResult compare(Album srcAlbum, Album trgAlbum)
{
#region Pre Conditions
Debug.Assert(srcAlbum != null, "Source Album cannot be null");
Debug.Assert(trgAlbum != null, "Target Album cannot be null");
#endregion
#region Initialize Result
SyncResult result = new SyncResult();
Album[] resultAlbum = createCompareResultAlbum();
#endregion
#region Initialize Stack
Stack<CompareStackContent> recursive = new Stack<CompareStackContent>();
CompareStackContent stackContent = new CompareStackContent(srcAlbum,
trgAlbum);
recursive.Push(stackContent);
#endregion
Album sourceAlbum, targetAlbum;
#region Main Loop
do /* Do-While Loop for Performance */
{
/* Get the Element Inside Stack */
stackContent = recursive.Pop();
sourceAlbum = stackContent.source;
targetAlbum = stackContent.target;
/* Files Comparison */
compareFiles(result, resultAlbum, sourceAlbum, targetAlbum);
/* Folders Comparison */
compareFolders(result, resultAlbum, recursive, sourceAlbum, targetAlbum);
} while (recursive.Count != 0);
#endregion
// Put the Result Album in Result
result.setResult(resultAlbum);
#region Post Conditions
Debug.Assert(result != null, "Result cannot be null");
#endregion
return result;
}
