String+Emoji

String+Emoji.swift

import Foundation

extension String {
    var containsEmoji: Bool {
        for scalar in unicodeScalars {
            switch scalar.value {
            case 0x1F600...0x1F64F, // Emoticons
            0x1F300...0x1F5FF, // Misc Symbols and Pictographs
            0x1F680...0x1F6FF, // Transport and Map
            0x1F900...0x1F9FF, //idk but here lies clown and others
            0x2600...0x26FF,   // Misc symbols
            0x2700...0x27BF,   // Dingbats
            0xFE00...0xFE0F:   // Variation Selectors
                return true
            default:
                continue
            }
        }
        return false
    }

    var allEmoji: Bool {
        for char in self.characters {
            let s = String(char)
            if !s.containsEmoji {
                return false
            }
        }
        return true
    }

    var composedCount: Int {
        var count = 0
        enumerateSubstrings(in: startIndex..<endIndex, options: .byComposedCharacterSequences) { (_, _, _, _) in
            count += 1
        }
        return count
    }
}