How do I get each line from an NSString?

Question

If I have an NSString with a text file in it, how do I get an NSArray of NSString with each NSString containing a line of the file.

In 10.5 I did this:

NSArray* lines = [str componentsSeparatedByCharactersInSet: [NSCharacterSet newlineCharacterSet]];

But that doesn't work in 10.4, and my program needs to work in 10.4.

As well, it needs to work with \r, \n and \r\n line endings.

Answer 1

The following code is straight from Apple's documentation regarding paragraphs and line breaks:

unsigned length = [string length];
unsigned paraStart = 0, paraEnd = 0, contentsEnd = 0;
NSMutableArray *array = [NSMutableArray array];
NSRange currentRange;
while (paraEnd < length)
{
    [string getParagraphStart:&paraStart end:&paraEnd
    contentsEnd:&contentsEnd forRange:NSMakeRange(paraEnd, 0)];
    currentRange = NSMakeRange(paraStart, contentsEnd - paraStart);
    [array addObject:[string substringWithRange:currentRange]];
}

I'm not 100% sure if it will work with 10.4