DirectoryUtils.h

//
//  DirectoryUtils.h
//  PhotoCloud
//
//  Created by liupeng on 14/11/2016.
//  Copyright © 2016 liupeng. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface DirectoryUtils : NSObject
+(NSString* )RealHomeDirectory;
+(NSURL* )picturesDirectory;
+(NSURL* )downloadsDirectory;
+(NSURL* )moviesDirectory;
+(NSURL* )musicDirectory;
@end

DirectoryUtils.m

//
//  DirectoryUtils.m
//  PhotoCloud
//
//  Created by liupeng on 14/11/2016.
//  Copyright © 2016 liupeng. All rights reserved.
//

#import "DirectoryUtils.h"
#include <unistd.h>
#include <sys/types.h>
#include <pwd.h>
@implementation DirectoryUtils
+(NSString* ) RealHomeDirectory
{
    struct passwd *pw = getpwuid(getuid());
    return [NSString stringWithUTF8String:pw->pw_dir];
}

+(NSURL* )picturesDirectory {
    return [[NSURL fileURLWithPath:[self RealHomeDirectory]] URLByAppendingPathComponent:@"Pictures"];
}
+(NSURL* )downloadsDirectory {
    return [[NSURL fileURLWithPath:[self RealHomeDirectory]] URLByAppendingPathComponent:@"Downloads"];
}
+(NSURL* )moviesDirectory {
    return [[NSURL fileURLWithPath:[self RealHomeDirectory]] URLByAppendingPathComponent:@"Movies"];
}
+(NSURL* )musicDirectory {
    return [[NSURL fileURLWithPath:[self RealHomeDirectory]] URLByAppendingPathComponent:@"Music"];
}
@end