Question

Google Docs returns a long 3 line string when supplied with credentials. This is the format
SID=stuff…
LSID=stuff…
Auth=long authorization token

if I have it stored in NSString, what is the best function to trim all the way up to the “=” behind Auth, and keep the rest?

NSData *returnedData = [NSURLConnection sendSynchronousRequest:request returningResponse:theResponse error:NULL];
NSString *newDataString = [[NSString alloc]initWithData:returnedData encoding:NSUTF8StringEncoding];
NSString *authToken = [newDataString ____________];

Answer 1

I figured out the answer on my own through the documentation for NSString:

there is a method called
-(NSArray *)componentsSeparatedByCharactersInSet:(NSCharacterSet *)separator {

that gives back an array of different strings, separated by an NSCharacterSet.

There is a class method of NSCharacterSet called

+(NSCharacterSet *)newLineCharacterSet {

that will split up a string with the newline symbol into pieces, so each line becomes its own object. Here is how it works:

NSData *returnedData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:NULL];
NSString *newDataString = [[NSString alloc]initWithData:returnedData encoding:NSUTF8StringEncoding];
NSCharacterSet *theCharacterSet = [NSCharacterSet newlineCharacterSet];
NSArray *lineArray = [newDataString componentsSeparatedByCharactersInSet:theCharacterSet];

Now, the object lineArray contains different strings, each one is the start of a new line.

You’re welcome!