iOS Keychain status to string

gistfile1.txt

+ (NSString *)keychainStatusToString:(OSStatus)status {
    
    switch (status) {
        case 0:
            return @"Success";
        case -4:
            return @"Function or operation not implemented.";
        case -50:
            return @"One or more parameters passed to the function were not valid.";
        case -108:
            return @"Failed to allocate memory.";
        case -2000:
            return @"Username or servicename nil";
        case -25291:
            return @"No trust results are available.";
        case -25293:
            return @"Authorization/Authentication failed.";
        case -25299:
            return @"The item already exists.";
        case -25300:
            return @"The item cannot be found.";
        case -25308:
            return @"Interaction with the Security Server is not allowed.";
        case -26275:
            return @"Unable to decode the provided data.";
        default:
            return [NSString stringWithFormat:@"Unknown error: %d", (int)status];
    }
}