Reverse Engineering of CoreEmoji.framework

core_emoji.swift

import Foundation

guard let bundle = Bundle(identifier: "com.apple.CoreEmoji"), bundle.load() else {
    fatalError()
}

let handle = dlopen(nil, RTLD_NOW)

typealias CEMCreateEmojiLocaleData_t = @convention(c) (CFLocaleIdentifier) -> CFTypeRef
let CEMCreateEmojiLocaleData = unsafeBitCast(dlsym(handle, "CEMCreateEmojiLocaleData"),
                                             to: CEMCreateEmojiLocaleData_t.self)

typealias CEMEmojiLocaleDataCreateEmojiTokensForString_t = @convention(c) (CFTypeRef, CFString, UnsafeRawPointer?, UnsafeRawPointer?, Bool, Bool) -> CFArray
let CEMEmojiLocaleDataCreateEmojiTokensForString = unsafeBitCast(dlsym(handle, "CEMEmojiLocaleDataCreateEmojiTokensForString"),
                                                                 to: CEMEmojiLocaleDataCreateEmojiTokensForString_t.self)

typealias CEMEmojiTokenGetString_t = @convention(c) (CFTypeRef) -> CFString
let CEMEmojiTokenGetString = unsafeBitCast(dlsym(handle, "CEMEmojiTokenGetString"),
                                           to: CEMEmojiTokenGetString_t.self)

let localeId = CFLocaleGetIdentifier(CFLocaleCopyCurrent())!
let data = CEMCreateEmojiLocaleData(localeId)
let tokens = CEMEmojiLocaleDataCreateEmojiTokensForString(data, "facepalm" as CFString, nil, nil, false, true) as [CFTypeRef]
let emojis = NSOrderedSet(array: tokens.map(CEMEmojiTokenGetString)).array
print(emojis)

// [🤦‍♀️, 🤦‍♂️]