Unicode.Char.Normalization
Low level Unicode database functions to facilitate Unicode normalization.
For more information on Unicode normalization please refer to the following sections of the Unicode standard:
2 General Structure
- 2.3 Compatibility Characters
- 2.12 Equivalent Sequences
3 Conformance
- 3.6 Combination
- 3.7 Decomposition
- 3.11 Normalization Forms
- 3.12 Conjoining Jamo Behavior
4 Character Properties
- 4.3 Combining Classes
- Unicode® Standard Annex #15 - Unicode Normalization Forms
- Unicode® Standard Annex #44 - Unicode Character Database
Combining class
isCombining :: Char -> Bool Source #
Returns True if a character is a combining character.
Since: 0.1.0
combiningClass :: Char -> Int Source #
Returns the combining class of a character.
Since: 0.1.0
isCombiningStarter :: Char -> Bool Source #
Return True if a starter character may combine with some preceding
starter character.
Since: 0.1.0
Composition
compose :: Char -> Char -> Maybe Char Source #
Compose a starter character (combining class 0) with a combining character
(non-zero combining class). Returns the composed character if the starter
combines with the combining character, returns Nothing otherwise.
Since: 0.1.0
composeStarters :: Char -> Char -> Maybe Char Source #
Compose a starter character with another starter character. Returns the
composed character if the two starters combine, returns Nothing otherwise.
Since: 0.1.0
Decomposition
Non-Hangul
data DecomposeMode Source #
Whether we are decomposing in canonical or compatibility mode.
Since: 0.1.0
isDecomposable :: DecomposeMode -> Char -> Bool Source #
Given a non-Hangul character determine if the character is decomposable. Note that in case compatibility decompositions a character may decompose into a single compatibility character.
Since: 0.1.0
decompose :: DecomposeMode -> Char -> [Char] Source #
Decompose a non-Hangul character into its canonical or compatibility decompositions. Note that the resulting characters may further decompose.
Since: 0.1.0