Forked from sketchytech/Swift extension to NSMutableAttributedString (highlight and replace)
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February 23, 2016 08:24
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Swift extension to NSMutableAttributedString adding methods for highlighting and replacing substrings (swift 2.0 supportted)
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| extension NSMutableAttributedString { | |
| func highlightStrings(stringToHighlight:String, usingRegex:Bool = false) { | |
| var useRegex:NSRegularExpressionOptions? | |
| if !usingRegex { | |
| useRegex = NSRegularExpressionOptions.IgnoreMetacharacters | |
| } | |
| let exp = try! NSRegularExpression(pattern: stringToHighlight, options: useRegex!) | |
| let arr = exp.matchesInString(self.string, options: [], range:NSRange(location: 0, length: self.length)) | |
| for s in arr { | |
| self.addAttribute(NSBackgroundColorAttributeName, value: UIColor.greenColor(), range: s.range) | |
| } | |
| } | |
| func replaceStrings(find:String, replace:String, usingRegex:Bool = false) { | |
| // var useRegex:NSRegularExpressionOptions? | |
| // if !usingRegex { | |
| // useRegex = NSRegularExpressionOptions.IgnoreMetacharacters | |
| // } | |
| // | |
| // let exp = try! NSRegularExpression(pattern: find, options: useRegex!) | |
| // let arr = exp.matchesInString(self.string, options: [], range:NSRange(location: 0, length: self.length)) | |
| self.mutableString.replaceOccurrencesOfString(find, withString:replace, options:NSStringCompareOptions.RegularExpressionSearch, range:NSRange(location: 0, length: self.length)) | |
| } | |
| } |
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