Re: How would you convert a \r to its UTF-8 counterpart ?

FROM : Ricky Sharp
DATE : Tue Jul 25 23:39:46 2006

On Jul 25, 2006, at 4:20 PM, Stéphane Sudre wrote:

> Let's say I want to save the following string in a .plist file:
>
> "this is a stupid line of text, isn't it?\r"
>
> and the resulting .plist shall be something like this:
>
> <I don't remember the plist header so this is a replacement>
> <dict>
>     <key>A string</key>
>     <string> this is a stupid line of text, isn't it?&#x0D;</string>
> </dict>
> </I should remember them though>
>
> The idea being to have the \r character be replaced by its hexa value.
>
> If I save a NSDictionary using the writeToFile:atomically: API, I 
> will get a '\r'.
>
> If I replace the \r with &#x0D;, I will get &amp;#x0D; of course.
>
> Any idea on how to do this?


I think this is a bit tricky since in the XML spec, any whitespace at 
the beginning or end of a tag's value can be automatically stripped 
out.  Whether or not these rules apply to a .plist is beyond me.

Also because writeToFile:atomically: actually writes out the bytes to 
the file, you have no control over the contents of a tag.  Thus, I 
think you'll need to use the character entity encoding like you're 
doing (i.e. &#x0D).  When reading things back in, replace any 
character entities with appropriate values.

If you had control over the contents of a tag, you could potentially 
wrap it in a CDATA clause.  I believe leading/trailing whitespace 
would not get removed.

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Ricky A. Sharp        mailto:<email_removed>
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