A NSCharacterSet containing (hopefully) all logographic characters from unicode.

NSCharacterSet+Logographic.m

#define CharacterRange(__from__, __to__) NSMakeRange(__from__, __to__ - __from__ + 1)

@implementation NSCharacterSet (HRSCharacterSet)

+ (instancetype)logographicCharacterSet
{
    NSRange ranges[] = {
        CharacterRange(0x2E80,  0x2EFF), // CJK Radicals Supplement
        CharacterRange(0x2F00,  0x2FDF), // Kangxi Radicals
        CharacterRange(0x3300,  0x33FF), // CJK Compatibility
        CharacterRange(0x3400,  0x4DBF), // CJK Unified Ideographs Extension A
        CharacterRange(0x4E00,  0x9FFF), // CJK Unified Ideographs
        CharacterRange(0xA000,  0xA48F), // Yi Syllables
        CharacterRange(0xA490,  0xA4CF), // Yi Radicals
        CharacterRange(0xAC00,  0xD7AF), // Hangul Syllables
        CharacterRange(0xF900,  0xFAFF), // CJK Compatibility Ideographs
        CharacterRange(0x20000, 0x2A6DF), // CJK Unified Ideographs Extension B
        CharacterRange(0x2F800, 0x2FA1F), // CJK Compatibility Ideographs Supplement
    };
    NSUInteger rangeCount = 10;

    NSMutableCharacterSet *characterSet = [NSMutableCharacterSet new];
    for (int i = 0; i < rangeCount; i++) {
        [characterSet addCharactersInRange:ranges[i]];
    }
    return [characterSet copy];
}

@end