Re: [Pyobjc-dev] problem saving as rtfd

[chris <por...@ya...>]

Now I am getting this on the console and a complete
app crash:

 *** -[NSFileWrapper writeToFile:atomically:]:
selector not recognized
Traceback (most recent call last):
  File
"/Users/c/SecretText/build/SecretText.app/Contents/Resources/__main__.py",
line 20, in ?
    sys.exit(AppKit.NSApplicationMain(sys.argv))
ValueError: NSInvalidArgumentException - ***
-[NSFileWrapper writeToFile:atomically:]: selector not
recognized

Stepping through the code in the terminal the
NSFileWrapper comes back fine but it looks like it has

"writeToFile_atomically_updateFilenames_"
rather than 
"writeToFile_atomically_"

hence the collapse. This is the current code:

else:
            length = len(self.text.string())
            store = self.text.textStorage()
            cyphertext =
store.RTFDFileWrapperFromRange_documentAttributes_((0,length),None)
        
        #output the cyphertext to a file
        return cyphertext

Chris

--- Marcel Weiher <ma...@me...> wrote:
> 
> >         plaintext = ""
> >         cyphertext = NSData.alloc()
> 
> Minor nit:  you shouldn't really have a partly
> initialized instance  
> flying around.
> 
> >         #if the plaintext was manually encrypted
> then
> > it needs no further encryption
> >         #in fact further encryption could be
> harmful
> >         if self.encrypted == NO and
> > self.saveSwitch.state() == 1:
> >             #edited out as this code isn't running
> > 	        #at this time.
> >         else:
> >             length = len(self.text.string())
> >
> >
>
cyphertext.initWithBytes_length(self.text.RTFDFromRange_((0,length)),le
> 
> > ngth)
> 
> That's the problem right here:
> 
> 
> 1. RTFDFromRange already returns an NSData, and what
> you are doing is  
> initializing a second NSData object with the pointer
> of the NSData  
> *object*.
> 
> 2. RTFDFromRange is "an RTFD stream corresponding to
> the characters and  
> attributes within aRange".  This is a pasteboard
> representation an not  
> something you can directly/usefully save as a file.
> 
> 
> So, what you need is
> -RTFDFileWrapperFromRange:documentAttributes: ,  
> which returns a file-wrapper object that you can
> save.
> 
> More can be found in the fine documentation:   
> NSAttributedString  
> class reference + some concept docs "RTF Files and
> Attributed Strings",  
> referenced from the NSAttributedString class
> reference.
> 
> Marcel
> 
> -- 
> Marcel Weiher				Metaobject Software Technologies
> ma...@me...		www.metaobject.com
> Metaprogramming for the Graphic Arts.   HOM, IDEAs,
> MetaAd etc.
> 

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