Ashton

Converts NSAttributedStrings between AppKit, CoreText, UIKit and HTML.

What crazy name is that?

Not crazy at all: AttributedStringHTMLTransformation.

What does it actually do?

Ashton has two parts

a) It can convert the attributes of a AppKit, CoreText or UIKit NSAttributedString to and from an intermediate cross-platform Ashton-specific representation. This allows us to convert e.g. AppKit -> Ashton intermediate -> CoreText.

b) It can convert between a NSAttributedString with intermediate attributes and HTML. This allows us to transfer a NSAttributedString between Mac and iOS.

AppKit Input	Intermediate	AppKit Output
NSParagraphStyleAttributeName with textAlign	@"paragraph": @{ @"textAlignment":@"left|right|center" }	NSParagraphStyleAttributeName with textAlign
NSFontAttributeName	@"font": @{ @"traitBold":@YES, @"traitItalic":@NO, @"features":@[@[@5, @1], @[@14, @1]], @"pointSize":@12, @"familyName":@"Helvetica" }	NSFontAttributeName
NSSuperscriptAttributeName with values 1 or -1	@"verticalAlign": @"super|sub"	NSSuperscriptAttributeName
NSUnderlineColorAttributeName	@"underlineColor": @[@255, @0, @0, @1.0]	NSUnderlineColorAttributeName
NSStrikethroughStyleAttributeName	@"strikethrough": @"single|thick|double"	NSStrikethroughStyleAttributeName
NSStrikethroughColorAttributeName	@"strikethroughColor": @[@255, @0, @0, @1.0]	NSStrikethroughColorAttributeName
NSForegroundColorAttributeName	@"color": @[@255, @0, @0, @1.0]	NSForegroundColorAttributeName
NSStrokeColorAttributeName	@"color": @[@255, @0, @0, @1.0]	NSForegroundColorAttributeName
NSLinkAttributeName	@"link": @"http://google.com/"	NSLinkAttributeName