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How to get Unicode's "General Category" of a character?
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How to get Unicode's "General Category" of a character?


  • Subject: How to get Unicode's "General Category" of a character?
  • From: "Gerriet M. Denkmann" <email@hidden>
  • Date: Tue, 07 Jul 2015 19:03:46 +0700

Given a character (a Unicode code point, to be exact) like U+FF0B (FULLWIDTH PLUS SIGN), I want to know the General Category of this.
For this example it would be “Sm" (aka. Math_Symbol or Symbol, Math).

I could download the current version of UnicodeData.txt and parse it.
But this looks not very efficient.

For punctuation one could use NSCharacterSet punctuationCharacterSet.

But for Math Symbols?

I did look at CFStringTransform, which can give the Character name via kCFStringTransformToUnicodeName.

But I cannot find anything for “General Category"

NSRegularExpression can match for [\p{General_Category = Math_Symbol}]; not quite what I want, but better than nothing.


Any ideas?

Gerriet.


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