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|
{-# OPTIONS -cpp #-}
module Compat.Unicode (
GeneralCategory(..), generalCategory, isPrint, isUpper
) where
#if __GLASGOW_HASKELL__ > 604
import Data.Char (GeneralCategory(..), generalCategory,isPrint,isUpper)
#else
import Foreign.C ( CInt )
import Data.Char ( ord )
-- | Unicode General Categories (column 2 of the UnicodeData table)
-- in the order they are listed in the Unicode standard.
data GeneralCategory
= UppercaseLetter -- Lu Letter, Uppercase
| LowercaseLetter -- Ll Letter, Lowercase
| TitlecaseLetter -- Lt Letter, Titlecase
| ModifierLetter -- Lm Letter, Modifier
| OtherLetter -- Lo Letter, Other
| NonSpacingMark -- Mn Mark, Non-Spacing
| SpacingCombiningMark -- Mc Mark, Spacing Combining
| EnclosingMark -- Me Mark, Enclosing
| DecimalNumber -- Nd Number, Decimal
| LetterNumber -- Nl Number, Letter
| OtherNumber -- No Number, Other
| ConnectorPunctuation -- Pc Punctuation, Connector
| DashPunctuation -- Pd Punctuation, Dash
| OpenPunctuation -- Ps Punctuation, Open
| ClosePunctuation -- Pe Punctuation, Close
| InitialQuote -- Pi Punctuation, Initial quote
| FinalQuote -- Pf Punctuation, Final quote
| OtherPunctuation -- Po Punctuation, Other
| MathSymbol -- Sm Symbol, Math
| CurrencySymbol -- Sc Symbol, Currency
| ModifierSymbol -- Sk Symbol, Modifier
| OtherSymbol -- So Symbol, Other
| Space -- Zs Separator, Space
| LineSeparator -- Zl Separator, Line
| ParagraphSeparator -- Zp Separator, Paragraph
| Control -- Cc Other, Control
| Format -- Cf Other, Format
| Surrogate -- Cs Other, Surrogate
| PrivateUse -- Co Other, Private Use
| NotAssigned -- Cn Other, Not Assigned
deriving (Eq, Ord, Enum, Read, Show, Bounded)
-- | Retrieves the general Unicode category of the character.
generalCategory :: Char -> GeneralCategory
generalCategory c = toEnum (wgencat (fromIntegral (ord c)))
foreign import ccall unsafe "u_gencat"
wgencat :: CInt -> Int
isPrint c = iswprint (fromIntegral (ord c)) /= 0
isUpper c = iswupper (fromIntegral (ord c)) /= 0
foreign import ccall unsafe "u_iswprint"
iswprint :: CInt -> CInt
foreign import ccall unsafe "u_iswupper"
iswupper :: CInt -> CInt
#endif
|
