Objective-C. Basic Directory Operations

NSFileManager allows to perform the basic operations with directories:
1. Detect current directory
2. Change current directory
3. Create new directory
4. Move directory
5. Delete directory.
6. Enumerate the content.
Here is a simple program demonstrating these basic directory operations:

#import <Foundation/NSObject.h>
#import <Foundation/NSString.h>
#import <Foundation/NSFileManager.h>
#import <Foundation/NSAutoreleasePool.h>

int main (int argc, const char * argv[]) 
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    NSString        *dirName = @"testDir";
    NSString        *path;
    NSFileManager    *fm;
    BOOL            success;
    
    fm = [NSFileManager defaultManager];
    
    path = [fm currentDirectoryPath];
    NSLog(@"Current directory path is %@", path);
    
    success = [fm createDirectoryAtPath: dirName attributes: nil];
    if (success == YES)
    {
        success = [fm movePath: dirName toPath: @"newDir" handler: nil];
        
        if (success == YES)
        {
            success = [fm changeCurrentDirectoryPath: @"newDir"];
            
            if (success == YES)
            {
                path = [fm currentDirectoryPath];
                NSLog(@"Current directory path is %@", path);
            }
            else
            {
                NSLog(@"Couldn't change the current directory");
            }
        }
        else
        {
            NSLog(@"Couldn't rename the directory");
        }
    }
    else
    {
        NSLog(@"Couldn't create directory");
    }
    
    [pool drain];
    return 0;
}

The following program enumerates the directory content:

#import <Foundation/NSString.h>
#import <Foundation/NSFileManager.h>
#import <Foundation/NSAutoreleasePool.h>
#import <Foundation/NSArray.h>

int main (int argc, const char * argv[]) 
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    NSString                *path;
    NSFileManager            *fm;
    NSDirectoryEnumerator    *dirEnum;
    
    fm = [NSFileManager defaultManager];
    [fm changeCurrentDirectoryPath: @"/Users/pavelgnatyuk/Documents/Hello"];
    path = [fm currentDirectoryPath];
    dirEnum = [fm enumeratorAtPath: path];
    
    NSLog(@"Content of %@:", path);

    do
    {
        path = [dirEnum nextObject];
        if (path == nil)
            break;
        NSLog(@"%@", path);
    }    while(YES);

    [pool drain];
    return 0;
}

Let's prevent the enumerating of the subfolders:

#import <Foundation/NSString.h>
#import <Foundation/NSFileManager.h>
#import <Foundation/NSAutoreleasePool.h>
#import <Foundation/NSArray.h>

int main (int argc, const char * argv[]) 
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    NSString                *path;
    NSFileManager            *fm;
    NSDirectoryEnumerator    *dirEnum;
    BOOL                    flag;
    
    fm = [NSFileManager defaultManager];
    [fm changeCurrentDirectoryPath: @"/Users/pavelgnatyuk"];
    path = [fm currentDirectoryPath];
    dirEnum = [fm enumeratorAtPath: path];
    
    NSLog(@"Content of %@:", path);

    do
    {
        path = [dirEnum nextObject];
        if (path == nil)
            break;
        
        NSLog(@"%@", path);
        
        [fm fileExistsAtPath: path isDirectory: &flag];
        if (flag == YES)
            [dirEnum skipDescendents];
        
    }    while(YES);

    [pool drain];
    return 0;
}

Or just:

#import <Foundation/NSString.h>
#import <Foundation/NSFileManager.h>
#import <Foundation/NSAutoreleasePool.h>
#import <Foundation/NSArray.h>

int main (int argc, const char * argv[]) 
{
    NSAutoreleasePool        *pool = [[NSAutoreleasePool alloc] init];
    NSString                *path= @"/Users/pavelgnatyuk";
    NSFileManager            *fm;
    NSArray                    *dirArray;
    
    fm = [NSFileManager defaultManager];
    NSLog(@"Content of %@:", path);
    dirArray = [fm directoryContentsAtPath: path];
    for (path in dirArray)
        NSLog(@"%@", path);
    
    [pool drain];
    return 0;
}