NSString(FWApplication)

@interface NSString (FWApplication)

#pragma mark - Pinyin

/**
 *  中文转拼音并进行比较
 *
 *  @param string 中文字符串
 */
- (NSComparisonResult)fw_pinyinCompare:(NSString *)string NS_REFINED_FOR_SWIFT;

#pragma mark - Regex

/**
 *  安全截取字符串。解决末尾半个Emoji问题(半个Emoji调UTF8String为NULL，导致MD5签名等失败)
 *
 *  @param index 目标索引
 */
- (NSString *)fw_emojiSubstring:(NSUInteger)index NS_REFINED_FOR_SWIFT;

/**
 *  正则搜索子串
 *
 *  @param regex 正则表达式
 */
- (nullable NSString *)fw_regexSubstring:(NSString *)regex NS_REFINED_FOR_SWIFT;

/**
 *  正则替换字符串
 *
 *  @param regex  正则表达式
 *  @param string 替换模板，如"头部$1中部$2尾部"
 *
 *  @return 替换后的字符串
 */
- (NSString *)fw_regexReplace:(NSString *)regex withString:(NSString *)string NS_REFINED_FOR_SWIFT;

/**
 *  正则匹配回调
 *
 *  @param regex 正则表达式
 *  @param block 回调句柄。range从大至小，方便replace
 */
- (void)fw_regexMatches:(NSString *)regex withBlock:(void (^)(NSRange range))block NS_REFINED_FOR_SWIFT;

#pragma mark - Html

/**
 转义Html，如"a<"转义为"a&lt;"
 
 @return 转义后的字符串
 */
@property (nonatomic, copy, readonly) NSString *fw_escapeHtml NS_REFINED_FOR_SWIFT;

// 创建一个UUID字符串，示例："D1178E50-2A4D-4F1F-9BD3-F6AAB00E06B1"。也可调用NSUUID.UUID.UUIDString
@property (class, nonatomic, copy, readonly) NSString *fw_UUIDString NS_REFINED_FOR_SWIFT;

@end