How would I write the following rb-appscript in objc-appscript? - objective-c

Question

The documentation in the appscript objc-trunk randomly uses ruby in the section called "Performance Issues".
require "appscript"
include Appscript
desiredEmail = 'sam.brown#foo.com'
p app('Address Book').people[
its.emails.value.contains(desiredEmail)
].name.get
How would this be written in Objective-C? I apologize if this seems like an overly basic question, I have 0 experience with Ruby.
Thanks.

Answer 1

If you run the ruby script and use ASTranslate it should translate the raw appscript commands to Objc-appscript.
Edit01:
I think it will look something like this. I haven't run the tool to make the glue code so I'm guessing about the way the app name shows up.
#import "AddressBookGlue.h" //Dont know the precise name
AddressBookApplication *abApp=[[AddressBookApplication alloc] initWithName: #"Address Book.app"];
NSString *desiredEmail=#"sam.brown#foo.com"
NSString *returnedName= [[[[[[abApp people] emails] value] contains:desiredEmail] name] get];
Basically, it follows the same rules that Objectic-c uses when converting from a dot syntax: anywhere there is a dot in the original syntax, expect a bracket in Objective-C.
I might add that if you're going to be doing a lot of this type scripting, it would be best to spend a day or two learning the basics of ruby or python. It's a lot easier to work with OSA in a dot syntax than a nested syntax. Just looking at all those brackets in the documentation for Objc-appscript makes my eyes water.

Answer 2

Apologies for the incompleteness of the objc-appscript manual, which was originally ported from rb-appscript as you can tell. (FWIW, I should have some time to work on appscript this spring.)
Translating the Ruby code back to AppleScript first is probably the easiest approach:
tell application "Address Book"
get name of every person where value of its email contains "hengist.podd#virgin.net"
end tell
Running it through ASTranslate gives this:
#import "ABGlue/ABGlue.h"
ABApplication *addressBook = [ABApplication applicationWithName: #"Address Book"];
ABReference *ref = [[[addressBook people] byTest: [[[ABIts emails] value] contains: #"hengist.podd#virgin.net"]] name];
id result = [ref getItem];

Answer 3

From what I understand, that's printing the name of every person who has an email of "sam.brown#foo.com".
There's no direct correlation for how to do this in Cocoa. Fortunately for you, Address Book is scriptable, which means you can use the Scripting Bridge framework to interact with it from a Cocoa app.
This page has a really great explanation on how to simply interact with Mail.app via ScriptingBridge: http://robnapier.net/blog/scripting-bridge-265
Hopefully that should give you enough information to get going in the right direction.