IODProfanityFilter provides a basic profanity filter for iOS and Mac OS X apps. It has the following goals:
- Simplicity of use
- Performance
- Minimizing false positives
It is not intended to be the "be-all end-all" profanity filter; just something basic that doesn't have to worry about dealing with the Scunthorpe Problem. I created this library because I needed a simple filter for an app that has user-generated content and is used by a lot of kids. Nothing turned up for iOS, so here it is!
IODProfanityFilter only matches whole words and does not attempt to check for l33t-speak or anything like that.
The filter works on the user's locale and supports the following languages so far: German, English, Spanish, French, Italian, Japanese, Dutch, Polish, Portuguese, Russian, and Chinese.
The best way to include it in your project is with CocoaPods. If you're not using CocoaPods, you should probably start using CocoaPods.
To filter a string, use either the provided NSString category methods or the methods on IODProfanityFilter, whichever you prefer.
NSString *filtered = [@"a great fucking example string" iod_filteredString]; // @"a great ∗∗∗∗∗∗∗ example string"
or
NSString *filtered = [IODProfanityFilter stringByFilteringString:@"a great fucking example string"]; // @"a great ∗∗∗∗∗∗∗ example string"
You can have greater control over the output by using stringByFilteringString:withReplacementString:
or by using rangesOfFilteredWordsInString:. The latter will give you the ranges so you can do whatever you want;
perhaps give the user bonus points for using dirty words!
The lovely word lists were initially created by Shutterstock.