// HTMLString.h // // Public domain. https://github.com/nolanw/HTMLReader #import // These are internal methods, so they should not add anything to any Foundation classes (e.g. by defining categories). /** Append a single Unicode code point to an NSMutableString. This takes care of code points that require the use of surrogate pairs. @param self The NSMutableString that will get a character. @param character The character to append. */ extern void AppendLongCharacter(NSMutableString *self, UTF32Char character); /** Execute a block on every Unicode code point in a string. This takes care of code points that require the use of surrogate pairs. @param self The string whose code points are enumerated. @param block The block to execute, which has no return value and takes a code point as its sole parameter. */ extern void EnumerateLongCharacters(NSString *self, void (^block)(UTF32Char character)); /// Returns a string consisting solely of the character. extern NSString * StringWithLongCharacter(UTF32Char character); /** Whether or not the character is a whitespace character. For more information, see http://www.whatwg.org/specs/web-apps/current-work/multipage/common-microsyntaxes.html#space-character */ extern BOOL is_whitespace(UTF32Char c); /** Whether or not the character is allowed to be in an HTML document. For more information, see http://www.whatwg.org/specs/web-apps/current-work/multipage/parsing.html#preprocessing-the-input-stream */ extern BOOL is_undefined_or_disallowed(UTF32Char c); /// @return YES if the first parameter is equal to any subsequent parameter, otherwise NO. #define StringIsEqualToAnyOf(search, ...) ({ \ NSString *s = (search); \ __unsafe_unretained NSString *potentials[] = { __VA_ARGS__ }; \ BOOL found = NO; \ size_t count = sizeof(potentials) / sizeof(potentials[0]); \ for (NSUInteger i = 0; i < count; i++) { \ if ([s isEqualToString:potentials[i]]) { \ found = YES; \ break; \ } \ } \ found; \ })