How to find all contents with modified date of the directory in Objective C code

Question

This requirement is very specific to read directory contents along with date modified for all sub files and folders. In windows we have some API's but I didn't find similar function in Mac OS development. I searched for this where I found that NSFileManager can be used for this.I found one place where I can get the path contents under Documents directory.

Here is the piece of code code which I have.

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsPath = [paths objectAtIndex:0];

NSFileManager *manager = [[NSFileManager alloc] init];
NSDirectoryEnumerator *fileEnumerator = [manager enumeratorAtPath:documentsPath];

for (NSString *filename in fileEnumerator) {
    // Do something with file
    NSLog(@"file name : %@",filename );
}

But my requirement is to find the contents under any path on machine with the date modified for all sub files and a folders in it.Please guide me on it.

Thanks, Tausif.

Answer 1

Apple has a code sample demonstrating how to do this:

NSDirectoryEnumerator *directoryEnumerator = [[NSFileManager defaultManager] enumeratorAtPath:directoryPath];

NSDate *yesterday = [NSDate dateWithTimeIntervalSinceNow:(-60*60*24)];

for (NSString *path in directoryEnumerator) {

    if ([[path pathExtension] isEqualToString:@"rtfd"]) {
        // Don't enumerate this directory.
        [directoryEnumerator skipDescendents];
    } else {
        NSDictionary *attributes = [directoryEnumerator fileAttributes];
        NSDate *lastModificationDate = [attributes objectForKey:NSFileModificationDate];

        if ([yesterday earlierDate:lastModificationDate] == yesterday) {
            NSLog(@"%@ was modified within the last 24 hours", path);
        }
    }
}

Basically this code enumerates the directoryPath and checks if the file or directory has been modified within the last 24 hours.