NSString <-> CBUUID 변환

NSString -> CBUUID

NSString *string = [@"233R194013780790" toUUID];
CBUUID *harexUUID = [CBUUID UUIDWithString:string];
// 결과 :
// 32333352-3139-3430-3133-373830373930

 

CBUUID -> NSString

// 32333352-3139-3430-3133-373830373930
NSString *uuidString = [harexUUID representativeString];
NSString *tid = [harexUUID toString];
// 결과 :
// 233R194013780790

 

관련 함수 :

// String to Hexadecimal String
-(NSString *)toHex {
    char *utf8 = (char *)[self UTF8String];
    NSMutableString *hex = [NSMutableString string];
    while ( *utf8 ) {
        [hex appendFormat:@"%02X" , *utf8++ & 0x00FF];
    }
    return [NSString stringWithFormat:@"%@", hex];
}

// Hexadecimal String to NSData
-(NSData *)hex2Data {
    NSMutableData *stringData = [[NSMutableData alloc] init];
    unsigned char whole_byte;
    char byte_chars[3] = {'\0','\0','\0'};
    int i;
    for (i=0; i < [self length] / 2; i++) {
        byte_chars[0] = [self characterAtIndex:i*2];
        byte_chars[1] = [self characterAtIndex:i*2+1];
        whole_byte = strtol(byte_chars, NULL, 16);
        [stringData appendBytes:&whole_byte length:1];
    }
    return stringData;
}

-(CBUUID *)toCBUUID {
    if (NO == [self isValidUUID]) {
        NSLog(@"포멧 비정상.");
        return nil;
    }
    return [CBUUID UUIDWithString:self];
}

-(BOOL)isValidUUID {
    return (BOOL)[[NSUUID alloc] initWithUUIDString:self];
}

// 문자열을 hex로 변경한뒤 UUID포멧으로 변경
-(NSString *)toUUID {
    NSString *string = self;
    if (string.length < 16) {
        NSString *spaceString = @"";
        for (NSInteger i=0; i<(16 - string.length); ++i) {
            spaceString = [spaceString stringByAppendingString:@" "];
        }
        // 길이가 작을 경우 앞쪽에 공백추가
        //string = [NSString stringWithFormat:@"%@%@", spaceString, self];

        // 길이가 작을 경우 뒤쪽에 공백추가
        string = [NSString stringWithFormat:@"%@%@", self, spaceString];
    }
    
    NSData *data = [string toData];
    NSUInteger bytesToConvert = [data length];
    const unsigned char *uuidBytes = [data bytes];
    NSMutableString *outputString = [NSMutableString stringWithCapacity:16];
    
    for (NSUInteger currentByteIndex = 0; currentByteIndex < bytesToConvert; currentByteIndex++) {
        switch (currentByteIndex) {
            case 3:
            case 5:
            case 7:
            case 9:[outputString appendFormat:@"%02X-", uuidBytes[currentByteIndex]]; break;
            default:[outputString appendFormat:@"%02X", uuidBytes[currentByteIndex]];
        }
        //SLog(@"%@", outputString);
    }

 

 

 

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