/*

     File: GetPathsOperation.m 

 Abstract: NSOperation code for directory and file enumeration.

  Version: 1.3 

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 */

#import "GetPathsOperation.h"

#import "LoadOperation.h"

@interface GetPathsOperation ()

{

    NSURL *rootURL;

    NSOperationQueue *queue;

    NSInteger ourScanCount;

}

@property (retain) NSURL *rootURL;

@property (retain) NSOperationQueue *queue;

@end

@implementation GetPathsOperation

@synthesize rootURL, queue;

// -------------------------------------------------------------------------------

//  initWithRootPath:

// -------------------------------------------------------------------------------

- (id)initWithRootURL:(NSURL *)url queue:(NSOperationQueue *)qq scanCount:(NSInteger)scanCount

{

    self = [super init];

    if (self)

    {

        self.rootURL = url;

        self.queue = qq;

        ourScanCount = scanCount;

    }

    return self;

}

// -------------------------------------------------------------------------------

//  main:

// -------------------------------------------------------------------------------

- (void)main

{   

    NSDirectoryEnumerator *itr =

        [[NSFileManager defaultManager] enumeratorAtURL:self.rootURL

                             includingPropertiesForKeys:nil

                                                options:(NSDirectoryEnumerationSkipsHiddenFiles | NSDirectoryEnumerationSkipsPackageDescendants)

                                           errorHandler:nil];

    for (NSURL *url in itr)

    {

        if ([self isCancelled])

        {

            break;  // user cancelled this operation

        }

        // use NSOperation subclass "LoadOperation"

        LoadOperation *op = [[LoadOperation alloc] initWithURL:url scanCount:ourScanCount];

        [op setQueuePriority:2.0];      // second priority

        [self.queue addOperation:op];   // this will start the load operation

    }

}

@end