Re: unicode fraction symbol in a NSTextView

[tridiak]

> On 23/06/2016, at 5:29 AM, Steve Christensen  wrote:
> 
> Where are you specifying the text encoding of the HTML "document" passed to 
> NSMutableAttributedString(HTML:, documentAttributes:)? The default encoding 
> for HTML used to be ISO-8859-1, not UTF-8, for HTML 4 and earlier (and could 
> continue to be interpreted that way by NSAttributedString for compatibility). 
> That could explain the extra character being displayed since the string 
> you're passing as the HTML parameter to NSMutableAttributedString doesn't 
> include, for example, a charset="utf8" meta tag in its  that would 
> specify the desired encoding.
> 
> And, unless you're doing some extra formatting not shown in your code 
> snippet, is there any reason you wouldn't be initializing ats with 
> NSAttributedString(string:s)?
> 

Copied from another project which uses an html document to be inserted into the 
NSTextView.
This project did have a database which did not have an HTML layout field and I 
forgot to change to NSAttributedString(string:s).
Found another DB which has an HTML data field (after I posted the original 
email), so I will drop my hand created version and use that.

I don’t deal with HTML much (besides basic websites) and completely forgot 
about the encoding.

Thanks for all the help. 

> 
>> On Jun 22, 2016, at 9:32 AM, tridiak  wrote:
>> 
>> I am setting some text to a NSTextView which includes the ‘½’ character. 
>> 
>> s = name + “ CR "
>> switch (CR) {
>>  case 0.5:
>>  s=s+”½” // \u{00bd}
>>  case 0.33:
>>  s=s+"⅓"
>>  case 0.25:
>>  s=s+"¼"
>>  case 0.2:
>>  s=s+"⅕"
>>  case 0.17:
>>  s=s+"⅙"
>>  case 0.14:
>>  s=s+"⅐"
>>  case 0.13:
>>  s=s+"⅛"
>>  default:
>>  if CR<1 {s=s+String(format:"%.1f", CR)}
>>  else {s=s+String(format:"%.0f", CR)}
>>  }
>> s=s+"\n”
>> 
>> let d : NSData = s.dataUsingEncoding(NSUTF8StringEncoding)!
>> let ats : NSMutableAttributedString = NSMutableAttributedString(HTML: d, 
>> documentAttributes: nil)!
>> self.blab.textStorage?.setAttributedString(ats)
>> 
>> 
>> What I see is 'Aasimar CR ½’ instead of 'Aasimar CR ½’.
>> Where is the ‘Â' coming from?
>> Is it the font or some swift-obj-C confusion?
> 


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unicode fraction symbol in a NSTextView

[Aandi Inston]

Almost certainly not the font itself. Looks like classic mojibake. The
sequence which you seem to report, capital A circumflex, one-half might be
in the encoding ISO-8859-1 (aka Windows-1252 aka informally Latin1).

If so we have
c2 - capital A circumflex
bd - one half

But what is the UTF-8 form of one-half? It is c2bd.  So this seems the
classic case of interpreting UTF-8 as ISO-8859-1. Where that is happening
is for you to find, but my bet is that it is later than you think.

On 22 June 2016 at 17:32, tridiak > wrote:

> I am setting some text to a NSTextView which includes the ‘½’ character.
>
> s = name + “ CR "
> switch (CR) {
> case 0.5:
> s=s+”½” // \u{00bd}
> ...
> let d : NSData = s.dataUsingEncoding(NSUTF8StringEncoding)!
> let ats : NSMutableAttributedString = NSMutableAttributedString(HTML: d,
> documentAttributes: nil)!
> self.blab.textStorage?.setAttributedString(ats)
>
> What I see is 'Aasimar CR ½’ instead of 'Aasimar CR ½’.
> Where is the ‘Â' coming from?
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Re: unicode fraction symbol in a NSTextView

[Steve Christensen]

Where are you specifying the text encoding of the HTML "document" passed to 
NSMutableAttributedString(HTML:, documentAttributes:)? The default encoding for 
HTML used to be ISO-8859-1, not UTF-8, for HTML 4 and earlier (and could 
continue to be interpreted that way by NSAttributedString for compatibility). 
That could explain the extra character being displayed since the string you're 
passing as the HTML parameter to NSMutableAttributedString doesn't include, for 
example, a charset="utf8" meta tag in its  that would specify the desired 
encoding.

And, unless you're doing some extra formatting not shown in your code snippet, 
is there any reason you wouldn't be initializing ats with 
NSAttributedString(string:s)?


> On Jun 22, 2016, at 9:32 AM, tridiak  wrote:
> 
> I am setting some text to a NSTextView which includes the ‘½’ character. 
> 
> s = name + “ CR "
> switch (CR) {
>   case 0.5:
>   s=s+”½” // \u{00bd}
>   case 0.33:
>   s=s+"⅓"
>   case 0.25:
>   s=s+"¼"
>   case 0.2:
>   s=s+"⅕"
>   case 0.17:
>   s=s+"⅙"
>   case 0.14:
>   s=s+"⅐"
>   case 0.13:
>   s=s+"⅛"
>   default:
>   if CR<1 {s=s+String(format:"%.1f", CR)}
>   else {s=s+String(format:"%.0f", CR)}
>   }
> s=s+"\n”
> 
> let d : NSData = s.dataUsingEncoding(NSUTF8StringEncoding)!
> let ats : NSMutableAttributedString = NSMutableAttributedString(HTML: d, 
> documentAttributes: nil)!
> self.blab.textStorage?.setAttributedString(ats)
> 
> 
> What I see is 'Aasimar CR ½’ instead of 'Aasimar CR ½’.
> Where is the ‘Â' coming from?
> Is it the font or some swift-obj-C confusion?


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Re: unicode fraction symbol in a NSTextView

[Paul Scott]

Since the symbol is outside the ASCII range and your output encoding is UTF-8, 
that character requires 2 octets. Clearly, whatever application is reading the 
file isn't using UTF-8 encoding. Switch that application to UTF-8 and the 
character will display correctly.

Sent from my iPhone

> On Jun 22, 2016, at 9:32 AM, tridiak  wrote:
> 
> I am setting some text to a NSTextView which includes the ‘½’ character. 
> 
> s = name + “ CR "
> switch (CR) {
>case 0.5:
>s=s+”½” // \u{00bd}
>case 0.33:
>s=s+"⅓"
>case 0.25:
>s=s+"¼"
>case 0.2:
>s=s+"⅕"
>case 0.17:
>s=s+"⅙"
>case 0.14:
>s=s+"⅐"
>case 0.13:
>s=s+"⅛"
>default:
>if CR<1 {s=s+String(format:"%.1f", CR)}
>else {s=s+String(format:"%.0f", CR)}
>}
> s=s+"\n”
> 
> let d : NSData = s.dataUsingEncoding(NSUTF8StringEncoding)!
> let ats : NSMutableAttributedString = NSMutableAttributedString(HTML: d, 
> documentAttributes: nil)!
> self.blab.textStorage?.setAttributedString(ats)
> 
> 
> What I see is 'Aasimar CR ½’ instead of 'Aasimar CR ½’.
> Where is the ‘Â' coming from?
> Is it the font or some swift-obj-C confusion?
> 
> TIA
> 
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Re: unicode fraction symbol in a NSTextView

[Quincey Morris]

On Jun 22, 2016, at 09:32 , tridiak  wrote:
> 
> What I see is 'Aasimar CR ½’ instead of 'Aasimar CR ½’.
> Where is the ‘Â' coming from?

Well, the first thing you need to determine is whether this is the value of ’s’ 
itself, or the result of interpreting ’s’ as HTML.

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unicode fraction symbol in a NSTextView

[tridiak]

I am setting some text to a NSTextView which includes the ‘½’ character. 

s = name + “ CR "
switch (CR) {
case 0.5:
s=s+”½” // \u{00bd}
case 0.33:
s=s+"⅓"
case 0.25:
s=s+"¼"
case 0.2:
s=s+"⅕"
case 0.17:
s=s+"⅙"
case 0.14:
s=s+"⅐"
case 0.13:
s=s+"⅛"
default:
if CR<1 {s=s+String(format:"%.1f", CR)}
else {s=s+String(format:"%.0f", CR)}
}
s=s+"\n”

let d : NSData = s.dataUsingEncoding(NSUTF8StringEncoding)!
let ats : NSMutableAttributedString = NSMutableAttributedString(HTML: d, 
documentAttributes: nil)!
self.blab.textStorage?.setAttributedString(ats)


What I see is 'Aasimar CR ½’ instead of 'Aasimar CR ½’.
Where is the ‘Â' coming from?
Is it the font or some swift-obj-C confusion?

TIA

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