TheWorld のテーマ設定で用いられているカラー暗号化の仕組みのコードです。 いつか、JSか何かでWebで綺麗に再現できるような支援機構を作ります。

gistfile1.m

// We Cannot Use "{" & "}" & ","
static NSString *_IndList[300] = {
  
  @"⠀", @"⠁",  @"⠂",  @"⠃",	@"⠄",	@"⠅",	@"⠆",	@"⠇",	@"⠈",	@"⠉",
	@"⠊", @"⠋",	@"⠌",	@"⠍",	@"⠎",	@"⠏",	@"⠐",	@"⠑",	@"⠒",	@"⠓",
  @"⠔", @"⠕",	@"⠖",	@"⠗",	@"⠘",	@"⠙",	@"⠚",	@"⠛",	@"⠜",	@"⠝",
  @"⠞", @"⠟",
  
  @"⠠",	@"⠡",	@"⠢",	@"⠣",	@"⠤",	@"⠥",	@"⠦",	@"⠧",	@"⠨",	@"⠩",
	@"⠪", @"⠫",	@"⠬",	@"⠭",	@"⠮",	@"⠯",	@"⠰",	@"⠱",	@"⠲",	@"⠳",
	@"⠴",	@"⠵", @"⠶",	@"⠷",	@"⠸",	@"⠹",	@"⠺",	@"⠻",	@"⠼",	@"⠽",
	@"⠾",	@"⠿",
  
  @"⡀",	@"⡁",	@"⡂",	@"⡃",	@"⡄",	@"⡅",	@"⡆",	@"⡇",	@"⡈",	@"⡉",
	@"⡊", @"⡋",	@"⡌",	@"⡍",	@"⡎",	@"⡏",	@"⡐",	@"⡑",	@"⡒",	@"⡓",
	@"⡔",	@"⡕",	@"⡖",	@"⡗",	@"⡘",	@"⡙",	@"⡚",	@"⡛",	@"⡜",	@"⡝",
	@"⡞",	@"⡟",
  
  @"⡠",	@"⡡",	@"⡢",	@"⡣",	@"⡤",	@"⡥",	@"⡦",	@"⡧",	@"⡨",	@"⡩",
	@"⡪",	@"⡫",	@"⡬",	@"⡭",	@"⡮",	@"⡯",	@"⡰",	@"⡱",	@"⡲",	@"⡳",
	@"⡴",	@"⡵",	@"⡶",	@"⡷",	@"⡸",	@"⡹",	@"⡺",	@"⡻",	@"⡼",	@"⡽",
	@"⡾",	@"⡿",
  
  @"⢀",	@"⢁",	@"⢂",	@"⢃",	@"⢄",	@"⢅",	@"⢆",	@"⢇",	@"⢈",	@"⢉",
	@"⢊",	@"⢋",	@"⢌",	@"⢍",	@"⢎",	@"⢏",	@"⢐",	@"⢑",	@"⢒",	@"⢓",
	@"⢔",	@"⢕",	@"⢖",	@"⢗",	@"⢘",	@"⢙",	@"⢚",	@"⢛",	@"⢜",	@"⢝",
	@"⢞",	@"⢟",
  
  @"⢠",	@"⢡",	@"⢢",	@"⢣",	@"⢤",	@"⢥",	@"⢦",	@"⢧",	@"⢨",	@"⢩",
	@"⢪",	@"⢫",	@"⢬",	@"⢭",	@"⢮",	@"⢯",	@"⢰",	@"⢱",	@"⢲",	@"⢳",
	@"⢴",	@"⢵",	@"⢶",	@"⢷",	@"⢸",	@"⢹",	@"⢺",	@"⢻",	@"⢼",	@"⢽",
	@"⢾",	@"⢿",
  
  @"⣀",	@"⣁",	@"⣂", @"⣃", @"⣄",	@"⣅",	@"⣆",	@"⣇",	@"⣈",	@"⣉",
	@"⣊",	@"⣋",	@"⣌",	@"⣍",	@"⣎",	@"⣏",	@"⣐",	@"⣑",	@"⣒",	@"⣓",
	@"⣔",	@"⣕",	@"⣖",	@"⣗",	@"⣘",	@"⣙",	@"⣚",	@"⣛",	@"⣜",	@"⣝",
	@"⣞",	@"⣟",
  
  @"⣠",	@"⣡",	@"⣢",	@"⣣",	@"⣤",	@"⣥",	@"⣦",	@"⣧",	@"⣨",	@"⣩",
	@"⣪",	@"⣫",	@"⣬",	@"⣭",	@"⣮",	@"⣯",	@"⣰",	@"⣱",	@"⣲",	@"⣳",
	@"⣴",	@"⣵",	@"⣶",	@"⣷",	@"⣸",	@"⣹",	@"⣺",	@"⣻",	@"⣼",	@"⣽",
	@"⣾",	@"⣿",
  
};

// ####################################################################################
+ (int)getIndexFromChar:(NSString *)str{
  for(int i=0; i<256; i++){
    if([_IndList[i] isEqualToString:str]) return i; }
  return 0; }


// ####################################################################################
+ (NSString *)colorToString:(UIColor *)color{
  const CGFloat *_com = CGColorGetComponents(color.CGColor);
  UInt8 _r = (UInt8)(_com[0] * 255.f);
  UInt8 _g = (UInt8)(_com[1] * 255.f);
  UInt8 _b = (UInt8)(_com[2] * 255.f);  
  return [NSString stringWithFormat:@"%@%@%@",
          _IndList[_r],_IndList[_g],_IndList[_b]];
}

// ####################################################################################
+ (UIColor *)stringToColor:(NSString *)str{
  NSString *_rs = [str substringWithRange:NSMakeRange(0, 1)];
  NSString *_gs = [str substringWithRange:NSMakeRange(1, 1)];
  NSString *_bs = [str substringWithRange:NSMakeRange(2, 1)];
  float _r = ((float)[ThemeData getIndexFromChar:_rs]) / 255.f;
  float _g = ((float)[ThemeData getIndexFromChar:_gs]) / 255.f;
  float _b = ((float)[ThemeData getIndexFromChar:_bs]) / 255.f;
  return [UIColor colorWithRed:_r green:_g blue:_b alpha:1.f]; }


// ####################################################################################
- (NSString *)makeStringFtomTheme{
  NSMutableArray *_ary = [NSMutableArray array];
  
  [_ary addObject:[ThemeData colorToString:mainColor]];
  [_ary addObject:[ThemeData colorToString:subColor]];
  [_ary addObject:[ThemeData colorToString:impColor]];
  [_ary addObject:[ThemeData colorToString:btnColor1]];
  [_ary addObject:[ThemeData colorToString:btnColor2]];
  [_ary addObject:[ThemeData colorToString:btnColor3]];
  
  [_ary addObject:[ThemeData colorToString:exBackGround]];
  [_ary addObject:[ThemeData colorToString:exBtnTextColor]];
  [_ary addObject:[ThemeData colorToString:exImageColor]];
  [_ary addObject:[ThemeData colorToString:exTintColor]];
  [_ary addObject:[ThemeData colorToString:exLineColor]];
  [_ary addObject:[ThemeData colorToString:exBarColor]];
  
  [_ary addObject:[ThemeData colorToString:exPopBackGround]];
  [_ary addObject:[ThemeData colorToString:exPopTextColor]];
  
  NSString *_str = [_ary componentsJoinedByString:@""];
  return [NSString stringWithFormat:@"#TWTheme {%@,%@}",name,_str];
}

// ####################################################################################
+ (ThemeData *)makeThemeFromString:(NSString *)str{
  ThemeData *_theme = [[ThemeData alloc] init];
  
  NSString *reg = nil;
  NSError *error = nil;
  NSRegularExpression *regexp = nil;
  NSTextCheckingResult *match = nil;
  
  // Reg Exp
  reg = @"#TWTheme \\{(.+?),(.+)\\}";
  regexp = [NSRegularExpression regularExpressionWithPattern:reg options:0 error:&error];
  match = [regexp firstMatchInString:str options:0 range:NSMakeRange(0, str.length)];
  if(match.numberOfRanges > 1){
    _theme.name = [str substringWithRange:[match rangeAtIndex:1]];
    str = [str substringWithRange:[match rangeAtIndex:2]]; }

  NSMutableArray *_ary = [NSMutableArray array];
  if((str.length % 3) != 0) return nil;
  while(str.length != 3){
    [_ary addObject:[str substringToIndex:3]];
    str = [str substringFromIndex:3]; }
  [_ary addObject:str];
  
  if([_ary count] != CL_COLOR_NUMBER) return nil;
  _theme.mainColor = [ThemeData stringToColor:[_ary objectAtIndex:0]];
  _theme.subColor = [ThemeData stringToColor:[_ary objectAtIndex:1]];
  _theme.impColor = [ThemeData stringToColor:[_ary objectAtIndex:2]];
  _theme.btnColor1 = [ThemeData stringToColor:[_ary objectAtIndex:3]];
  _theme.btnColor2 = [ThemeData stringToColor:[_ary objectAtIndex:4]];
  _theme.btnColor3 = [ThemeData stringToColor:[_ary objectAtIndex:5]];

  _theme.exBackGround = [ThemeData stringToColor:[_ary objectAtIndex:6]];
  _theme.exBtnTextColor = [ThemeData stringToColor:[_ary objectAtIndex:7]];
  _theme.exImageColor = [ThemeData stringToColor:[_ary objectAtIndex:8]];
  _theme.exTintColor = [ThemeData stringToColor:[_ary objectAtIndex:9]];
  _theme.exLineColor = [ThemeData stringToColor:[_ary objectAtIndex:10]];
  _theme.exBarColor = [ThemeData stringToColor:[_ary objectAtIndex:11]];

  _theme.exPopBackGround = [ThemeData stringToColor:[_ary objectAtIndex:12]];
  _theme.exPopTextColor = [ThemeData stringToColor:[_ary objectAtIndex:13]];

  return _theme;
}