Double-Value Unicode?

Dar Scott dsc at swcp.com
Sun May 18 01:01:35 EDT 2014


Looking over this, this looks correct.  For correct input and output it is equivalent to the logic based formula that I gave.  



On May 17, 2014, at 11:54 AM, Scott Rossi <scott at tactilemedia.com> wrote:

> Maybe unnecessary for LC7, but for my work in LC6 (and anybody that's
> interested), I put together the following functions for converting a
> unicode surrogate pair to a single value and vice versa:
> 
> function unicodePairToNum pNum1,pNum2
>    return (pNum1 - 55296) * 1024 + (pNum2 - 56320) + 65536
> end unicodePairToNum
> 
> function numToUnicodePair pNum
>   put trunc((pNum - 65536)/1024 + 55296) into num1
>   put (pNum - 65536) mod 1024 + 56320 into num2
>   return num1,num2
> end numToUnicodePair
> 
> 
> 
> Thanks to Richmond for the link to unicode character calculations:
> http://www.russellcottrell.com/greek/utilities/SurrogatePairCalculator.htm
> 
> 
> 
> One item that would be helpful to know is at what value does a unicode
> character start being represented as pairs?  Is 65536 the upper limit for
> single value characters?
> 
> 
> Thanks & Regards,
> 
> Scott Rossi
> Creative Director
> Tactile Media, UX/UI Design
> 
> 
> 
> 
> On 5/16/14 4:58 PM, "Scott Rossi" <scott at tactilemedia.com> wrote:
> 
>> Hi All:
>> 
>> I thought I had figured out the display of Unicode glyphs in LC 6.6, and
>> then ran up against a threshold where the value of a character is
>> displayed as two values.  I'm guessing this is related to a "double-byte"
>> something or other.  How does one retrieve the value of a character as a
>> single value?
>> 
>> For example, I can set the htmlText of a field to 📞 and get the
>> correct unicode character to display.  But when retrieving the value for
>> the character, I get: ��
>> 
>> Can I encode/decode/jumpcode/flipcode something here to get a single
>> value 
>> representation of the character?
>> 
>> (Also, I'm unable set the value of the by setting the unicodeText to
>> numToChar(128222) -- only using the htmlText property seems to work).
>> 
>> 
>> Thanks for helping out this uniclueless dude.
>> 
>> Regards,
>> 
>> Scott Rossi
>> Creative Director
>> Tactile Media, UX/UI Design
>> 
> 
> 
> 
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