Solved

Enumerating through a file system and determining entry types.

Posted on 2014-07-24
3
193 Views
Last Modified: 2016-02-29
Hi, I have a question regarding how to properly enumerate through a hard drive's file system and identify which artifact are a "Directory" and which are a "File." Below I've included my code for your inspection. I've been able to successfully enumerate through the selected path (which for testing purposes is hard coded), but the part I'm struggling with is how to identify which entry is a Directory and which is simply a regular File.

With this code I get that all the results are "NSFileTypeDirectory", when in fact I know that some are and some aren't. I know I must be missing something very basic - probably, because I'm quite new to Objective-C.

Can someone please shed some light on this matter and determine what it is that I'm doing wrong.

Thank you,
Fulano

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[])
{

    @autoreleasepool {
       
        NSFileManager * fileManager = [NSFileManager defaultManager];
        NSString * path = @"/Users/Bob/Desktop/FileStorage";                       // (Hard coded for testing only)
        NSString * nextPath;
        NSDirectoryEnumerator * dirEnumerator = [fileManager enumeratorAtPath:path];
        NSDictionary * dict = [fileManager attributesOfItemAtPath:path error:nil];
        for (nextPath in dirEnumerator) {
                       
                NSLog(@"> %@ -- %@", nextPath, [dict valueForKey:@"NSFileType"]);
           
        }
    }
        
    return 0;
}

Open in new window

0
Comment
Question by:Mr_Fulano
  • 2
3 Comments
 
LVL 33

Accepted Solution

by:
pgnatyuk earned 500 total points
ID: 40220859
The following code will detect:
Add:
BOOL isDirectory = NO;
[fileManager fileExistsAtPath:path isDirectory:&isDirectory];
NSLog(@"name: %@ is %@ directory", path, isDirectory ? @"" : @" not ");

Open in new window

If you need an enumerator:
#import <Foundation/Foundation.h>

int main(int argc, const char * argv[])
{

    @autoreleasepool {
        
        NSFileManager *fileManager = [NSFileManager defaultManager];
        NSString * path = @"/Users/Bob/Desktop/FileStorage";                       // (Hard coded for testing only)
        BOOL isDirectory = NO;
        [fileManager fileExistsAtPath:path isDirectory:&isDirectory];
        NSLog(@"name: %@ is %@ directory", path, isDirectory ? @"" : @" not ");

        NSDirectoryEnumerator *dirEnumerator = [fileManager enumeratorAtURL:[NSURL URLWithString:path]
                                        includingPropertiesForKeys:@[NSURLNameKey, NSURLIsDirectoryKey]
                                                           options:NSDirectoryEnumerationSkipsHiddenFiles | NSDirectoryEnumerationSkipsSubdirectoryDescendants
                                                      errorHandler:nil];
        
        for (NSURL *name in dirEnumerator) {
            NSNumber *isDirectory;
            [name getResourceValue:&isDirectory forKey:NSURLIsDirectoryKey error:NULL];
            NSLog(@"name: %@ is %@ directory", name.absoluteString, [isDirectory boolValue] ? @"" : @" not ");
        }
    }
    return 0;
}

Open in new window

0
 

Author Comment

by:Mr_Fulano
ID: 40233452
Excellent pgnatyuk, this part of your answer was exactly what I needed. The rest of my code worked fine with your suggestion.

BOOL isDirectory = NO;
[fileManager fileExistsAtPath:path isDirectory:&isDirectory];
NSLog(@"name: %@ is %@ directory", path, isDirectory ? @"" : @" not ");
0
 

Author Closing Comment

by:Mr_Fulano
ID: 40233453
Very good thank you!!!
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Preface   In the first 100 days of the Macintosh release in January 1984, Apple sold 72,000 of the computers. Relatively cheap, easy-to-use personal computer with a graphical operating system. I've never seen this model. I did see this one:   …
CocoaPods is the best way to manage library dependencies in iOS and OS X projects. By using cocoa pods there is no need of downloading the code from github and copying to your project. There are plenty of open source libraries now available with C…
This is a video that shows how the OnPage alerts system integrates into ConnectWise, how a trigger is set, how a page is sent via the trigger, and how the SENT, DELIVERED, READ & REPLIED receipts get entered into the internal tab of the ConnectWise …
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

930 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now