Reading files with windows and unix line endings on iOS/OSX

Question

I have these lines to read a file and split its lines into items of an array:

- (NSArray *)lerLinhasArquivoBundle:(NSString *)nomeArquivo {

    NSString *arquivo = nil;
    NSError *error = nil;

    NSString *bd = [[NSBundle mainBundle] pathForResource:nomeArquivo ofType:@"csv"];

    if (bd) {
        arquivo = [NSString stringWithContentsOfFile:bd
                                            encoding:NSUTF8StringEncoding
                                               error:&error];
    }

    if (error || !bd) {
        return nil;
    }

    return [arquivo componentsSeparatedByString: @"\r\n"];
}

the problem is that this will only work with files that have "windows" CR/LF endings and will fail for files with UNIX line endings. When the file is a UNIX one, I get just one big item on the array.

OK, I can hack the method to test for \r\n and just \n and use the one that gives me more items on the array, but that appears to be a lame solution.

Is there a way to know what line endings is being used and use that information on the return line to split the elements into the array?

Answer 1

Use the [NSCharacterSet newlineCharacterSet] rather than an explicit string:

return  [arquivo componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]];