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Reverse mapping method unemojizedString #9

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Reverse mapping method unemojizedString #9

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3 changes: 3 additions & 0 deletions NSStringEmojize/NSString+Emojize.h
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,9 @@

- (NSString *)emojizedString;
+ (NSString *)emojizedStringWithString:(NSString *)text;
- (NSString *)unemojizedString;
+ (NSString *)unemojizedStringWithString:(NSString *)text;
+ (NSDictionary *)emojiAliases;
+ (NSDictionary *)reverseEmojiAliases;

@end
30 changes: 30 additions & 0 deletions NSStringEmojize/NSString+Emojize.m
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,36 @@ + (NSString *)emojizedStringWithString:(NSString *)text
return resultText;
}

- (NSString *)unemojizedString
{
return [NSString unemojizedStringWithString:self];
}

+ (NSString *)unemojizedStringWithString:(NSString *)text
{
NSMutableString *ret = [NSMutableString stringWithString:text];
[[self reverseEmojiAliases] enumerateKeysAndObjectsUsingBlock:^(id _Nonnull key, id _Nonnull obj, BOOL * _Nonnull stop) {
[ret replaceOccurrencesOfString:key withString:obj options:nil range:NSMakeRange(0, ret.length)];
}];
return ret;
}

+ (NSDictionary *)reverseEmojiAliases
{
static NSDictionary *_reverseEmojiAliases;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
NSMutableDictionary *reverseAliases = [NSMutableDictionary new];
[[self emojiAliases] enumerateKeysAndObjectsUsingBlock:^(id _Nonnull key, id _Nonnull obj, BOOL * _Nonnull stop) {
[reverseAliases setObject:key forKey:obj];
}];

_reverseEmojiAliases = reverseAliases;
});
return _reverseEmojiAliases;
}


+ (NSDictionary *)emojiAliases {
static NSDictionary *_emojiAliases;
static dispatch_once_t onceToken;
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