get path from known url

NSArray *pathstr1 = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentDirectory = [pathstr1 objectAtIndex:0];

NSString *pathString=[documentDirectory stringByAppendindString:@"/tamil.txt"];

NSUrl *url=[NSURL fileURLWithPath:pathString];
NSString *path=[url path];
NSLog(@"path==%@",path);