/* Function: ReleaseFileSource
* Releases a <FileSource> claimed via <PickFileSource()> after all processing is complete on it.
*/
protected void ReleaseFileSource(FileSource fileSource, FileSourceAdder fileSourceAdder, bool scanningCompleted)
{
lock (accessLock)
{
// If scanning wasn't completed allow it to be chosen again
if (!scanningCompleted)
{
// Need to find which index it was at
for (int i = 0; i < fileSources.Count; i++)
{
if ((object)fileSources[i] == (object)fileSource)
{
fileSourcesClaimed[i] = false;
fileSourceAdders[i] = null;
break;
}
}
}
if (fileSource is FileSources.Folder)
{
folderPrefixesClaimed.Remove(
(fileSource as FileSources.Folder).Path.Prefix
);
}
}
}
// Group: Initialization and Configuration Functions
// __________________________________________________________________________
/* Function: Adder
*/
public Adder(Engine.Instance engineInstance) : base(engineInstance)
{
fileSources = Manager.FileSources;
fileSourcesClaimed = new bool[fileSources.Count];
fileSourceAdders = new FileSourceAdder[fileSources.Count];
folderPrefixesClaimed = new StringSet(KeySettings.IgnoreCase);
accessLock = new object();
}
// Group: Individual File Management Functions
// __________________________________________________________________________
/* Function: PickFileSource
*
* Returns a <FileSource> that is available to be scanned for files and its corresponding <FileSourceAdder>, or false if there
* aren't any. You must pass them to <ReleaseFileSource()> when done.
*
* If this function returns false it doesn't mean that there are no unscanned <FileSources> remaining, as it may be requiring
* some to be scanned sequentially to prevent multiple sources on the same disk from being scanned at the same time. So
* while this function may return null while a particular <FileSource> is being scanned, it may return another one after it's
* released.
*/
protected bool PickFileSource(out FileSource fileSource, out FileSourceAdder fileSourceAdder)
{
lock (accessLock)
{
for (int i = 0; i < fileSources.Count; i++)
{
if (fileSourcesClaimed[i] == false)
{
fileSource = fileSources[i];
if (fileSource is FileSources.Folder)
{
string folderPrefix = (fileSource as FileSources.Folder).Path.Prefix;
if (folderPrefixesClaimed.Contains(folderPrefix) == false)
{
fileSourcesClaimed[i] = true;
folderPrefixesClaimed.Add(folderPrefix);
fileSourceAdder = fileSource.CreateAdderProcess();
fileSourceAdders[i] = fileSourceAdder;
return(true);
}
}
else // not a folder
{
fileSourcesClaimed[i] = true;
fileSourceAdder = fileSource.CreateAdderProcess();
fileSourceAdders[i] = fileSourceAdder;
return(true);
}
}
}
}
fileSource = null;
fileSourceAdder = null;
return(false);
}
