Write/Read NSMutableAttributedString to Plist

Question

OK, here we are :

I've got an NSTextView
I'm getting it's NSMutableAttributedString content
I'm unable to read/write it to plist

By using Rob's code ( Saving custom attributes in NSAttributedString ), I've made some progress (I'm managing to write the data to disk), but I cannot recover it (= NSKeyedUnarchiver returns nil).

Encoding :

// where MAS --> NSMutableAttributedString

NSData* stringData = [NSKeyedArchiver archivedDataWithRootObject:MAS];

Decoding :

NSMutableAttributedString* mas = (NSMutableAttributedString*)[NSKeyedUnarchiver unarchiveObjectWithData:dat];

Any ideas? Any possible workaround (even if not with NSCoder, which I doubt it works with RTFs...) would be welcome!

As a note unarchiving/deserializing objects generally results in an immutable copy. — Joe, Sep 10 '12 at 16:59
Can you not just use NSData's writeToFile:atomically: to write it and then dataWithContentsOfFile to read it back in? — Mark, Sep 10 '12 at 17:09
@mark OK, I will; and *how* do I convert my `NSData` back to `NSAttributedString`? — Dr.Kameleon, Sep 10 '12 at 17:10
@mark Unfortunately, it's not an issue with saving per se; but with archiving/unarchiving and deserialization :/ — Dr.Kameleon, Sep 10 '12 at 17:19
I think @Joe may have a point. Try using NSMutableAttributedString's initWithAttributedString: method instead of typecasting. — Mark, Sep 10 '12 at 17:21
@mark He's right; I've already corrected that. But it's still far from the solution... — Dr.Kameleon, Sep 10 '12 at 17:25
Question, does this solution http://stackoverflow.com/questions/2626667/saving-custom-attributes-in-nsattributedstring work as long as you are using NSAttributedString instead of NSMutableAttributedString? — Mark, Sep 10 '12 at 17:28
@mark Well, not actually; this is exactly the one I've studied most... (and partially copied)... but nope. — Dr.Kameleon, Sep 10 '12 at 17:30

score 5 · Accepted Answer · answered Sep 10 '12 at 17:56

And here's how it was solved.

NSAttributedString -> NSData :

NSData* j = [(NSMutableAttributedString*)MAS RTFDFromRange:NSMakeRange(0,[[MAS string] length]) 
                                        documentAttributes:nil];

NSData -> NSAttributedString

NSMutableAttributedString* mas = [[NSMutableAttributedString alloc] initWithRTFD:dat 
                                                              documentAttributes:nil];

Simple as that.

Write/Read NSMutableAttributedString to Plist

1 Answers1