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XojoでUnicode正規化

Xojo

Last updated at 2014-12-28Posted at 2014-12-28

XojoでUnicode正規化をするメソッドです。
XojoにはNSStringクラスがないのですけど、CFStringRefで代用できるんですね。
String型からとくに変換する必要もないので、かなり便利。


Function toNFC (s as String) As String
  // NFCの場合
  
  If s.LenB=0 then Return ""
  
  Declare function precomposedStringWithCanonicalMapping lib "Cocoa" selector "precomposedStringWithCanonicalMapping" (targetStr as CFStringRef) as CFStringRef
  
  Return precomposedStringWithCanonicalMapping(s)
End Function

4種類の正規化形式は以下の通り。

NFC -> precomposedStringWithCanonicalMapping
NFD -> decomposedStringWithCanonicalMapping
NFKC -> precomposedStringWithCompatibilityMapping
NFKD -> decomposedStringWithCompatibilityMapping

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